Rinnai IP090S User Manual

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Contents

If the informaon in these instrucons are not followed exactly, a re or explosion may

result causing property damage, personal injury, or loss of life.

• Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other appliance.

• WHAT TO DO IF YOU SMELL GAS

− Do not try to light any appliance.

− Do not touch any electrical switch; do not use any phone in your building.

− Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instrucons.

− If you cannot reach your gas supplier, call the re department.

• Installaon and service must be performed by a qualied installer, service agency or the gas supplier.

1 Welcome .................................................................................................................................................. 4

1.1 To the Installer ...............................................................................................................................................4

1.2 To the Consumer ............................................................................................................................................4

1.3 Acronyms and Abbreviaons .........................................................................................................................4

2. Safety ........................................................................................................................................................ 5

2.1 Safety Symbols ...............................................................................................................................................5

2.2 Safety Precauons ..........................................................................................................................................5

3. About the Boiler ........................................................................................................................................ 7

3.1 Front View ......................................................................................................................................................7

3.2 Boom View...................................................................................................................................................7

3.3 Components ...................................................................................................................................................9

3.4 Specicaons ...............................................................................................................................................10

3.5 Dimensions ...................................................................................................................................................11

3.6 Accessories ...................................................................................................................................................13

4. Installaon .............................................................................................................................................. 14

4.1 Installaon Guidelines ..................................................................................................................................14

4.2 What You’ll Need .........................................................................................................................................15

4.3 Items Included ..............................................................................................................................................16

4.4 Choose an Installaon Locaon ...................................................................................................................17

4.5 Mount the Boiler to the Wall .......................................................................................................................20

4.6 Fill the Condensate Collector .......................................................................................................................21

5. Venng ................................................................................................................................................... 22

5.1 Guidelines ....................................................................................................................................................22

5.2 Venng Installaon Sequence ......................................................................................................................23

5.3 Terminaon Consideraons .........................................................................................................................23

5.4 PVC Venng Safety Switch ...........................................................................................................................24

5.5 Venng Opons ...........................................................................................................................................25

6. Gas Supply............................................................................................................................................... 47

6.1 Connect the Gas Supply ...............................................................................................................................47

6.2 Gas Operang Instrucons ...........................................................................................................................48

6.3 Gas Pipe Sizing Reference Tables .................................................................................................................49

7. CH System Piping ..................................................................................................................................... 51

7.1 Guidelines ....................................................................................................................................................51

7.2 Instrucons ..................................................................................................................................................51

7.3 Common CH Components ............................................................................................................................52

7.4 Piping Diagram for a Basic CH System (With Hydraulic Separaon) .............................................................54

7.5 Hydraulic Separaon ....................................................................................................................................55

7.6 Connect the Pressure Relief Valves ..............................................................................................................58

7.7 Connect the Condensate Drain Line .............................................................................................................59

7.8 Condensate Pump Safety Switch Wiring ......................................................................................................60

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

8. DHW System Piping with Indirect Tank ..................................................................................................... 62

8.1 Guidelines .................................................................................................................................................... 62

8.2 Indirect Tank Control Opons ...................................................................................................................... 62

8.3 Indirect Tank Electrical Connecons ............................................................................................................ 63

8.4 Simultaneous CH and DHW Operaon ......................................................................................................... 65

8.5 Indirect Tank Parameter Sengs ................................................................................................................. 66

8.6 Piping Diagram for a Basic DHW Installaon ................................................................................................ 67

9. Power Supply .......................................................................................................................................... 68

9.1 Guidelines .................................................................................................................................................... 68

9.2 Electrical Connecons .................................................................................................................................. 69

9.3 Post-Power Supply Connecon Checklist ..................................................................................................... 70

9.4 Inial Sengs ............................................................................................................................................... 71

10. Commissioning ...................................................................................................................................... 74

10.1 Safety Precauons...................................................................................................................................... 74

10.2 Filling Process ............................................................................................................................................. 74

10.3 Deaeraon Process .................................................................................................................................... 75

11. Post-Installaon Checklist ..................................................................................................................... 77

12. Operaon .............................................................................................................................................. 79

12.1 Start-Up Informaon .................................................................................................................................. 79

12.2 Control Panel.............................................................................................................................................. 80

12.3 Basic Operaon Sengs............................................................................................................................. 82

12.4 Parameter Sengs ..................................................................................................................................... 91

12.5 Outdoor Reset Control ............................................................................................................................... 99

12.6 Air Handler Control .................................................................................................................................. 105

12.7 Bluetooth Low Energy (BLE) and App Instrucons ................................................................................... 106

12.8 Diagnosc Codes ...................................................................................................................................... 107

12.9 Forced Hi/Low Fire Modes ....................................................................................................................... 112

13. Maintenance ........................................................................................................................................ 113

13.1 Owner Maintenance ................................................................................................................................ 113

13.2 Licensed Professional Maintenance ......................................................................................................... 114

13.3 Test the Ignion Safety Shuto Device .................................................................................................... 117

14. Appendices ........................................................................................................................................... 118

14.1 Approved Cleaners, Inhibitors and Anfreezes ....................................................................................... 118

14.2 Flush the CH Plumbing System ................................................................................................................ 119

14.3 System Applicaon Examples .................................................................................................................. 122

14.4 Gas Conversion ........................................................................................................................................ 126

14.5 Wiring Diagram ....................................................................................................................................... 129

14.6 Ladder Diagram ....................................................................................................................................... 130

14.7 CH Pressure Drop and Flow Curve ........................................................................................................... 131

14.8 Remove a Boiler from a Common Vent System....................................................................................... 132

14.9 Massachuses State Gas Regulaons ..................................................................................................... 133

14.10 Federal Communicaon Commission (FCC) Interference Statement .................................................... 134

14.11 Industry Canada Statement ................................................................................................................... 135

14.12 Warranty ............................................................................................................................................... 136

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Thank you for purchasing a Rinnai I-Series

Plus Condensing Boiler. Before installing and

operang this boiler, be sure to read these

instrucons completely and carefully to

familiarize yourself with the boiler’s features

and funconality.

ANSI

American Naonal Standards

Instute

Btu Brish Thermal Unit

CH Central Heang

DHW Domesc Hot Water

GPM Gallons per minute

LP Liquid Propane

LWCO Low Water Cut O

NG Natural Gas

PP Polypropylene

PRV Pressure Relief Valve

PSI Pounds per square inch

W.C. Inches water column

• A trained and qualied professional

must install the boiler, inspect it, and

leak test it before use. The warranty

will be voided due to any improper

installaon.

• The trained and qualied professional

should have skills such as:

− Gas line sizing

− Connecng gas lines, water lines,

valves, and electricity

− Knowledge of applicable naonal,

state, and local codes

− Installing venng through a wall or

roof

− Training in installaon of

condensing boilers. Training on

Rinnai I-Series Plus Condensing

Boilers is accessible at

rinnaipro.myabsorb.com.

• Read all instrucons in this manual

before installing the boiler. The boiler

must be installed according to the

exact instrucons in this manual.

• Proper installaon is the responsibility

of the installer.

• When installaon is complete, leave

this manual with the boiler or give the

manual directly to the consumer.

Following is a list of common acronyms and

abbreviaons used in this manual:

• You must read the enre manual to

properly operate the boiler.

• Keep this manual for future reference.

• As when using any appliance generang

heat, there are certain safety precauons

you should follow. See secon “2.2 Safety

Precauons” for detailed safety

precauons.

• Be sure your boiler is installed by a

licensed installer.

• If installing in the state of Massachuses,

read secon “14.9 Massachuses State

Gas Regulaons” in this manual.

Table 1

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Safety alert symbol. Alerts you to

potenal hazards that can kill or

hurt you and others.

Indicates an imminently hazardous

situaon which, if not avoided, will result

in personal injury or death.

Indicates a potenally hazardous situaon

which, if not avoided, could result in

personal injury or death.

Indicates a potenally hazardous situaon

which, if not avoided, could result in minor

or moderate injury. It may also be used to

alert against unsafe pracces.

This manual contains the following important

safety symbols. Always read and obey all

safety messages.

The following precauons apply to the installer

and consumer. Read and follow all instrucons

in this secon.

• Before operang, smell all around the

appliance area for gas. Be sure to smell next

to the oor because some gas is heavier

than air and will sele on the oor.

• Keep the area around the appliance clear

and free from combusble materials,

gasoline, and other ammable vapors and

liquids.

• Do not store or use gasoline or other

ammable vapors and liquids in the vicinity

of this or any other appliance.

• Combusble construcon refers to adjacent

walls and ceiling and should not be

confused with combusble or ammable

products and materials. Combusble and/or

ammable products and materials should

never be stored in the vicinity of this or any

gas appliance.

• Always check the water temperature before

entering a shower or bath.

• If the informaon in these instrucons

is not followed exactly, a re or

explosion may result causing property

damage, personal injury, or death.

• Do not store or use gasoline or other

ammable vapors and liquids in the

vicinity of this or any other appliance.

• WHAT TO DO IF YOU SMELL GAS:

− Do not try to light any appliance.

− Do not touch any electrical switch;

do not use any phone in your

building.

− Immediately call your gas supplier

from a neighbor’s phone. Follow

the gas supplier’s instrucons.

− If you cannot reach your gas

supplier, call the re department.

• Installaon and service must be

performed by a qualied installer,

service agency or the gas supplier.

• The warning signs in this manual are

here to prevent injury to you and

others. Please follow them explicitly.

WARNING

CAUTION

DANGER

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• Flammable liquids such as cleaning

solvents, aerosols, paint thinners,

adhesives, gasoline and propane must be

handled and stored with extreme care.

These ammable liquids emit ammable

vapors and when exposed to an ignion

source can result in a re hazard or

explosion. Flammable liquids should not

be used or stored in the vicinity of this or

any other gas appliance.

• DO NOT operate the boiler without the

front panel installed. The front panel

should only be removed for service/

maintenance or replacing internal

components.

• BURN HAZARD. Hot exhaust and vent may

cause serious burns. Keep away from the

boiler. Keep small children and animals

away from the boiler.

• Heang supply, return and domesc hot

water outlet pipes leaving the boiler can

be hot to touch.

• Install the vent system per local and

naonal codes.

• Do not install this boiler above 10,200 

(3,109 m).

• Do not obstruct combuson air to the

boiler.

• The installer must verify that at least one

carbon monoxide alarm has been installed

within a residenal living space or home

following the alarm manufacturer’s

instrucons and applicable local codes

before pung the appliance into

operaon. Rinnai recommends that every

home have a carbon monoxide (CO) alarm

in the hallway near bedrooms in each

sleeping area. Check baeries monthly and

replace them annually.

• Failure to properly vent this appliance can

result in death, personal injury and/or

property damage.

• Do not use this appliance if any part has

been under water. Immediately call a

licensed professional to inspect the

appliance and replace any part of the

control system and any manual gas control

valve which has been under water.

• Do not use substute materials. Use only

parts cered for the appliance.

• Should overheang occur or the gas supply

fail to shut o, turn o the manual gas

control valve to the appliance.

• It is strongly recommended that you use a

trained and qualied professional who has

aended a Rinnai installaon training class

to adjust parameter sengs.

• Do not use an extension cord or adapter

plug with this appliance.

• Any alteraon to the appliance or its

controls can be dangerous and will void the

warranty.

• To protect yourself from harm, before

performing maintenance:

− Turn o the electrical power supply by

unplugging the power cord or by

turning o the electricity at the circuit

breaker. (The boiler controller does not

control the electrical power.)

− Turn o the gas at the gas control,

usually located immediately below the

boiler.

− Turn o the incoming water supply.

This can be done at the isolaon valve

immediately below the boiler for the

domesc hot water. Turning o the

water for the central heang system is

done at the boiler system lling staon

shut-o valve or the main water supply

to the building.

− Use only your hand to turn the manual

gas control valve. Never use tools. If the

manual gas control valve will not turn

by hand, do not try to repair it; call a

trained and qualied professional.

Force or aempted repair may result in

a re or explosion.

• Proper venng is required for the safe

operaon of this appliance. Failure to

properly vent this appliance can result in

death, personal injury and/or property

damage.

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Topics in this secon

• Front View

• Boom View

• Components

• Specicaons

• Dimensions

• Accessories

Figure 2: Boom View

Central

Heang

Supply

Gas

Central

Heang

Return

Controller

Vent

Connecons

Piping

Connecons

Figure 1: Front View

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 3: Bottom View Piping

All items are field-supplied unless otherwise noted.

Supply to CH System

Condensate Drain

Return from CH System

Gas Supply

Primary-Secondary Heating Kit

CH Return

CH Pressure Relief Valve (supplied with boiler)

CH Pressure Gauge

CH Supply

Gas Shut Off Valve

Boiler Pump

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 4: Components

Air Inlet Filter

Air Intake

Flue Gas Exhaust

Intake

Exhaust

Heat Exchanger

Fan with Integrated Venturi

Gas Valve

Silencer

Pressure Sensor

Ignion Unit

Air Vent

Burner Assembly

PC Board Cover

Control Panel

Condensate Trap

PC Board Removed

Combuson

Test Port

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Table 2

Maximum gas supply pressure must not exceed the value specied by the manufacturer.

Rinnai products are connually being updated and improved; therefore, specicaons are subject

to change without prior noce.

Model IP060S IP090S IP120S IP150S

Weight 62.6 lb (28.4 kg) 64.8 lb (29.4 kg)

Appliance Type Wall-Mounted, Gas-Fired Heat-Only (Solo) boiler

Installaon Type Indoor

Ignion System Direct Electronic Ignion

Heat Exchanger Surface Area

9.3 sq  10.9 sq 

Gas Consumpon

(Btu/h)

Minimum 15,000

Maximum 60,000 90,000 120,000 150,000

Temperature

Seng

CH (Minimum - Maximum) 86°F - 180°F (30°C - 82°C)

Indirect

Tank (DHW)

120°F - 150°F (50°C - 65°C)

Water Content

0.75 gal 0.88 gal

Water Pressure

Minimum: 13 PSI (90 kPa) Maximum: 45 PSI (310 kPa)

Recommended: 17-26 PSI (117-180 kPa)

Pressure Relief

Valve (included

with system)

30 PSI (207 kPa)

Sound Level 42 dB(A) 40 dB(A)

Electrical Data

Normal 36 W 53 W 50 W 50 W

Standby 8 W

Max Current

14 Amps

Fuse

10 Amps × 1, 4 Amps × 5

Gas

Supply Pressure

Natural Gas

3.5 in. - 10.5 in. W.C. (0.87 - 2.61 kPa)

Propane

8.0 in. - 13.5 in. W.C. (1.99 - 3.36 kPa)

Electric Connecons

AC 120 Volts, 60 Hz

Cercaons

ANSI Z21.13, CSA 4.9, ASME

Canada CRN 2089.9CL

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Measurements: in. (mm)

Vent Connecon: 2 in. (51 mm) nominal PVC/Polypropylene or 3 in./5 in. Concentric

Front

Side

Figure 5: Dimensions

11.50”

(291mm)

6.10”

(154.4mm)

1.3”

(34mm)

28.74”

(730mm)

30.02”

(762mm)

1.5”

(37mm)

18.5”

(470mm)

5.9”

(150mm)

2.5”

(63mm)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 6: Supply Connections

Table 3

Connecon Connecon Size

Gas 3/4 in. NPT

CH In (CH Return) 1 in. NPT

CH Out (CH Supply) 1 in. NPT

Condensate Outlet 1/2 in. NPT

Central Heang Return

Gas

Central Heang Supply

Condensate Drain

2.3”

(59mm)

4.5”

(113mm)

9.2”

(233mm)

13.9”

(353mm)

3.8”

(96mm)

7.2”

(184mm)

1.5”

(39mm)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

The following oponal accessories are available for the Rinnai I-Series Plus Condensing Boiler.

Neutralizes the condensate

generated by the boiler.

SCALECUTTER

Part #: 103000038

Filters and reduces the amount of

scale entering the boiler allowing

for greater boiler longevity.

SCALECUTTER REFILL CARTRIDGE

Part #: 103000039

Rell cartridge for the Scale Cuer

lter assembly.

Figure 7

CONDENSATE NEUTRALIZER

Part #: 804000074

PRIMARY-SECONDARY HEATING KIT

Part #: 807000212

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

THIS SECTION IS INTENDED

FOR THE INSTALLER

• This boiler is cered for installaon in

residenal and commercial applicaons.

• This boiler is suitable for combinaon

water heang through an indirect tank and

central heang.

• The installaon must conform with local

codes or, in the absence of local codes,

with the Naonal Fuel Gas Code, ANSI

Z223.1/NFPA 54, or the Natural Gas and

Propane Installaon Code, CSA B149.1. If

installed in a manufactured home, the

installaon must conform with the

Manufactured Home Construcon and

Safety Standard, Title 24 CFR, Part 3280

and/or CAN/SCA Z240 MH Series, Mobile

Homes.

• The appliance, when installed, must be

electrically grounded in accordance with

local codes or, in the absence of local

codes, with the Naonal Electrical Code,

ANSI/NFPA 70, or the Canadian Electrical

Code, CSA C22.1.

• The appliance and its main gas valve must

be disconnected from the gas supply

piping system during any pressure tesng

of that system at test pressures in excess

of 1/2 PSI (3.5 kPa) (13.84 in W.C.). For

system tesng at pressures less than or

equal to 1/2 PSI (3.5 kPa) (13.84 in W.C.)

the appliance must be isolated from the

gas supply piping by closing its individual

manual shuto valve.

• You must follow the installaon

instrucons and those in secon

“5. Venng” for adequate combuson air

and exhaust.

• If this boiler’s DHW system is connected to

a closed water supply system, such as one

having a backow preventer in the cold

water supply line, means shall be provided

to control thermal expansion. Contact the

water supplier or local plumbing inspector

on how to control thermal expansion.

• Should overheang occur or the gas

supply fail to shut o, turn o the manual

gas control valve to the appliance.

• Combuson air must be free of chemicals,

such as chlorine or bleach, that produce

fumes. These fumes can damage

components and reduce the life of your

appliance.

• Where required by the authority having

jurisdicon, the installaon must comply

with the Standard for Controls and Safety

Devices for Automacally Fired Boilers,

ANSI/ASME CSD-1.

Topics in this secon

• Installaon Guidelines

• What You’ll Need

• Items Included

• Choose an Installaon Locaon

• Mount the Boiler to the Wall

• Fill the Condensate Collector

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

DO NOT install the boiler in an area

where water leakage of the unit or

connecons will result in damage to

the area adjacent to the appliance or

to lower oors of the structure. When

such locaons cannot be avoided, it is

required that a suitable drain pan,

adequately drained, be installed under

the boiler. The pan must not restrict

combuson air ow.

DO NOT install the boiler in an area

with negave air pressure.

DO NOT obstruct the ow of

combuson and venlaon air.

DO NOT use substute parts that are

not authorized for this boiler.

DO NOT install the boiler on

carpeng.

DO NOT install the boiler outdoor.

DO NOT

• Ensure the wall is of sucient strength to

support the weight of the boiler, piping

and any other components needed for

installaon; if it is not, please reinforce

the wall as appropriate.

• Operang limits of the boiler:

Maximum boiler set

point temperature:

180°F (82 °C)

Maximum operang

pressure:

45 PSI (3.1 bar)

Maximum allowable

working

temperature ASME:

210°F (99°C)

Maximum allowable

working pressure

ASME:

45 PSI (3.1 bar)

• Pressure/Temperature Gauge

Note: When aaching the pressure/

temperature gauge, please comply with

applicable codes and the ASME standard.

• Low loss header or closely spaced tee

• Expansion tank for a closed heang system

• Air separator

• Standard tools for central heang, gas

ng, plumbing and electrical wiring.

• Digital manometer

• Digital mulmeter capable of reading

microamps

• pH digital meter or test strips

• For wall mounng bracket installaon:

− Level

− Screws (use appropriate screws for

type of wall construcon)

Gather the recommended tools and parts

before starng installaon.

• Combuson analyzer (intended for use

with condensing boilers)

• Hand truck with fastening belt

Table 4

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Carefully unpack your boiler system and verify the following contents are included. If any items are

damaged or missing, contact your local dealer/distributor. Do not aempt to use any item that

appears damaged.

• Installaon and Operaon Manual (this manual)

• User Manual

• Technical Data Sheet (located on inside of boiler front panel)

• “Key Points for a Successful Installaon” Sheet (adhered to boiler

front panel)

WALL MOUNTING BRACKET

PRESSURE RELIEF VALVE

For Central Heang Systems

OUTDOOR TEMPERATURE

SENSOR

VENT SCREENS

Vent screens (x2) and vent

screen screws (x2). The vent

screen prevents debris and

other objects from entering the

terminal. One vent screen is for

the intake; the other is for the

exhaust.

GAS CONVERSION LABEL

This boiler is congured for Natural Gas only. Use this kit to convert

to Propane Gas if needed. Contents include:

DOCUMENTATION

PART #:

807000211

PART #:

109000628

Figure 8

INTEGRATED ITEMS

Air Supply Filter

Refer to secon

“3.3 Components” for a complete

list of integrated parts.

Vent top with integrated

2 in. PVC and

3 in. X 5 in. Concentric

Vent Adapter

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Contaminant Maximum Level

Total Hardness Up to 200 mg/L

Aluminum * Up to 0.2 mg/L

Chlorides * Up to 250 mg/L

Copper * Up to 1.0 mg/L

Dissolved Carbon Dioxide

(CO2)

Up to 15.0 mg/L

Iron * Up to 0.3 mg/L

Manganese * Up to 0.05 mg/L

pH * 6.5 to 8.5

TDS (Total Dissolved

Solids) *

Up to 500 mg/L

Zinc * Up to 5 mg/L

Consideraon of care for your boiler should

include evaluaon of water quality.

• The water must be potable, free of

corrosive chemicals, sand, dirt, or other

contaminants.

• It is up to the installer to ensure the water

does not contain corrosive chemicals or

elements that can aect or damage the

boiler.

• Water that contains chemicals exceeding

the levels below can damage the boiler.

* Source: Part 143 Naonal Secondary Drinking Water Regulaons

When choosing an installaon locaon, you

must ensure that clearances will be met and

that the vent length will be within required

limits. Consider the installaon environment,

water quality, and need for freeze protecon.

Requirements for the gas line, water lines,

electrical connecon, and condensate disposal

can be found in their respecve installaon

secons in this manual.

This secon provides informaon on the

importance of water quality to the Rinnai

Condensing Boiler. The informaon is

intended to serve as general guidelines only

and is not a complete list of water quality

guidelines.

• Unsuitable heang system water can

cause the formaon of scale or sludge,

which aects system eciency. It can also

cause corrosion and reduce life of the heat

exchanger.

• Never use water that has been treated by

a reverse osmosis, deionized, or dislled

water to soen the water to ll the

heang system.

• For Domesc Hot Water systems, if you

install the boiler in an area that is known

to have hard water or that causes scale

build-up, the water must be treated and

may require a more frequent ushing

schedule. Scale build-up is caused by hard

water and can be accelerated if the boiler

is set at a high temperature. Rinnai oers

Southeastern Filtraon’s “Scale Cuer

Water Condioning System” that oers

superior lime scale prevenon and

corrosion control by feeding a blend of

control compounds into the cold water

supply.

• Oxygen permeable or rubber tubing is not

permied in the heang system unless it is

separated from the boiler by a plate heat

exchanger.

• Thoroughly ush the system prior to

lling. While ushing, isolate the boiler.

• Do not introduce any system cleaner into

the boiler. Flush the system thoroughly to

remove all system cleaner before lling

the boiler with water.

• When freeze protecon of the heang

system is desired, only use Rinnai-

approved anfreezes. The allowed

maximum concentraon is 40%.

• Reference secon “14.1 Approved

Cleaners, Inhibitors and Anfreezes” in the

Appendix for an approved list of system

cleaners, inhibitors, and anfreezes.

IMPORTANT

Replacement of components due to

water quality damage is not covered by

the warranty.

Table 5

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• Air surrounding the boiler, venng, and vent terminaon(s) is used for combuson and must be

free of any compounds that cause corrosion of internal components.

• These include corrosive compounds that are found in aerosol sprays, detergents, bleaches,

cleaning solvents, oil-based paints/varnishes, and refrigerants. The air in hair/nail salons, spas,

dry cleaning stores, photo processing labs, and storage areas for pool supplies oen contains

these compounds. Therefore, it is recommended that external (outdoor) installaons be used for

these locaons where possible. In applicaons ulizing room air where there are high levels of

parculates, Rinnai oers a room air screen.

• The boiler, venng, and vent terminaon(s) should not be installed in any areas where the air

may contain these corrosive compounds.

• Install the boiler as far away as possible from any air inlet vents. Corrosive fumes, somemes

found in hair/nail salons, spas, or other industries exposed to toxic fumes, may be released

through these vents when not in operaon. Chemicals that are corrosive in nature should not be

stored or used near the boiler or vent terminaon. This requirement applies to indoor and

outdoor installaons.

• In coastal regions, the boiler should be installed so that it is sheltered/protected from exposure

to sea breeze. Exposure to salty spray or breeze can cause corrosion of the boiler.

• DO NOT install the boiler in areas where intake air might be contaminated with chemicals.

• DO NOT use room air in applicaons where the indoor air is corrosive. Install the boiler as direct

vent in a sealed closet so that it is protected from the potenal of contaminated indoor air.

• Install the boiler and/or vent terminaon as far away as possible from exhaust vent hoods and

dryer vents.

• Damage and repair due to corrosive compounds in the air is not covered by warranty.

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Use this checklist to ensure you have selected the correct locaon for the boiler.

□

The boiler is not exposed to corrosive compounds in the air.

□

The boiler locaon complies with the required clearances.

□

The planned combuson air and exhaust terminaon locaons meet the required clearances.

□

The water supply does not contain chemicals or exceed total hardness that will damage the

heat exchanger.

□

A standard 3 prong 120 VAC, 60 Hz properly grounded wall outlet or other 120 VAC, 60 Hz

source is available.

□

The installaon must conform with local codes or, in the absence of local codes, with the

Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installaon

Code, CSA B149.1.

Locaon Clearance to Combusbles and Non-Combusbles

Top 2 in. (51 mm) (0 in. from vent components)

Boom/Ground 12 in. (305 mm)

Front 0 in. (Clearance for servicing is 24 in. / 610 mm in front of boiler)

Back 0 in.

Sides (Le and Right) 2 in. (51 mm)

Vent 0 in.

If clearances are not met, damage

to the property and boiler may

occur.

Table 6

TOP

Figure 9

BOTTOM

FRONT

SIDE

CAUTION

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Supplied by Installer:

• Level

• Four screws for mounng bracket

installaon

• Screws for top and boom bracket

installaon

Use appropriate screws for type of

wall construcon.

1 Hold the wall mounng bracket up against

the wall and use a level to make sure the

bracket is even. Proper operaon requires

the boiler to be level.

2 Use four screws to secure the wall

mounng bracket to the wall (two screws

on far le side and two screws on far right

side).

Use the appropriate screws for the wall

construcon to secure the mounng

bracket to the wall between two studs.

You Will Need:

• Rinnai Condensing Boiler

• Wall Mounng Bracket

Level

Wall Mounng Bracket

3 Insert the top bracket into the wall

mounng bracket. Make sure the wall

mounng bracket is aached to the wall

and can hold the weight of the boiler

before you fully let go.

Steps connued on next page.

Instrucons:

Figure 12

Figure 11

Figure 10

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Before operaon of the boiler, the

condensate collector must be lled with

water. This is to prevent the potenal of

exhaust gasses from entering the building.

Failure to ll the condensate collector could

result in severe personal injury or death.

4 Securely screw the top and boom

brackets into the wall, making sure the

screws are ush with the wall.

• Use any of the holes in the top and

boom brackets.

• Make sure the securing method is

sucient to support the weight of the

boiler. Refer to the boiler weight in

secon “3.4 Specicaons” of this

manual.

The boiler must be installed in an

upright and level posion. Do not

install the boiler upside down or on

its side.

IMPORTANT

The condensate collector must be lled with

water prior to installing the vent system.

Pour approximately 10 ounces (1.25 cups) of

water directly into the boiler’s exhaust port

(do not remove the 2 in. PVC adapter prior to

this).

Figure 13

Top Bracket

Boom Bracket

Exhaust

Port

Figure 14

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• I-Series Plus boilers can be installed in

direct vent or non-direct vent applicaons.

• When installed as Direct Vent, refer to the

following secon for a complete list of

approved vent manufacturers and

products: “5.5.1 Direct Vent: Approved

Vent Manufacturers and Products.”

• When installed as Non-Direct Vent (Room

Air), the vent must be Category IV and of a

type listed by a naonal recognized tesng

agency.

• Exhaust must be directly vented to the

outside. Combuson air can be provided

from outside (Direct Vent) or from room

air (Non-Direct Vent).

• If using room air (Non-Direct Vent) for

combuson, ensure the required volume

of indoor air is available in accordance

with one of the following:

A The Naonal Fuel Gas Code, ANSI

Z223.1/NFPA 54;

B CSA B149.1, Natural Gas and Propane

Installaon Code; or

C Applicable provisions of the local

building code.

• Avoid dips or sags in horizontal vent runs

by installing supports per the vent

manufacturer’s instrucons.

• Support horizontal vent runs every 4 

(1.2 m) and all vercal vent runs every 6 

(1.83 m) or as per vent manufacturer’s

instrucons or local code requirements.

• Venng should be as direct as possible with a

minimum number of pipe ngs.

• For manufactured vent systems, vent

connecons must be rmly pressed together

so that the connecons form an air ght seal.

Follow the venng manufacturer’s

instrucons.

• Refer to the schedule 40 PVC/CPVC

manufacturer for appropriate ngs, solvents

or joining methods.

• If venng reassembly is needed, follow the

steps for installing the venng in the following

secons. Make certain that the vent piping

and seals are not damaged. Only use sealants,

primers, or glues that are approved for the

vent material in use.

• Refer to the instrucons of the vent system

manufacturer for component assembly

instrucons.

• If the vent system is to be enclosed, it is

suggested that the design of the enclosure

shall permit inspecon of the vent system.

The design of such enclosure shall be deemed

acceptable by the installer or the local

inspector.

• Any issues resulng from improper vent

installaon will not be covered by warranty.

• DO NOT use cellular core PVC/CPVC.

• DO NOT use Radel, ABS, or galvanized

material to vent this appliance.

• DO NOT cover non-metallic vent pipe and

ngs with thermal insulaon.

• DO NOT combine vent components from

dierent manufacturers.

• DO NOT reduce the vent diameter. Vent

diameter cannot be less than 2 in.

• DO NOT connect the venng system with an

exisng vent or chimney.

• DO NOT common vent with the vent pipe of

any other manufacturer’s boiler or

appliance.

IMPORTANT

If reusing exisng venng, the venng should be

inspected for damage and to ensure it is

appropriate (approved) for this boiler. To ensure

safe and proper operaon, damaged vent

components MUST be replaced before operang

the boiler.

WARNING

Topics in this secon

• Guidelines

• Venng Installaon Sequence

• Terminaon Consideraons

• PVC Venng Safety Switch

• Venng Opons

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

1. Determine the terminaon method—

horizontal or vercal, concentric, or twin

pipes, etc.

2. Determine proper locaon for wall or roof

penetraon for each terminaon.

3. Install terminaon assembly as described in

this manual or in the vent manufacturer’s

installaon instrucons.

4. Install air and vent piping from boiler to

terminaon.

5. Slope horizontal exhaust run towards the

boiler 1/4 in per foot. DO NOT slope

combuson air pipe towards boiler.

6. Install vent supports and brackets allowing for

movement from expansion, or as per vent

manufacturer’s instrucons or local code

requirements.

7. (Oponal step) Install vent screen or room air

lter (not included with purchase) on schedule

40 PVC combuson air and exhaust

terminaon elbows as illustrated below.

Check to determine whether local codes

supersede the following clearances:

• Avoid terminaon locaons near a dryer

vent.

• Avoid terminaon locaons near

commercial cooking exhaust.

• Avoid terminaon locaons near any air

inlets.

• You must install a vent terminaon at least

12 in above the ground or ancipated snow

level.

• Press vent screen inside

of terminaon piece/

elbow.

• Secure vent screen to

the elbow with screw.

The vent for this appliance shall not

terminate:

• Over public walkways.

• Near sot vents or crawl space vents or

other area where condensate or vapor

could create a nuisance or hazard or

cause property damage.

• Where condensate or vapor could cause

damage or could be detrimental to the

operaon of regulators pressure relief

valves, or other equipment.

Listed below are important consideraons for

locang vent terminaon under a sot

(venlated or unvenlated or eave vent; or to

a deck or porch):

• Do not install vent terminaon under a

sot vent such that exhaust can enter

the sot vent.

• Install vent terminaon such that

exhaust and rising moisture will not

collect under eaves. Discoloraon to the

exterior of the building could occur if

installed too close.

• Do not install the vent terminaon too

close under the sot where it could

present recirculaon of exhaust gases

back into the combuson air intake of

the terminaon.

Horizontal porons of the venng system shall

be supported to prevent sagging:

• For category IV boilers, have horizontal

runs sloping upwards not less than 1/4

in. per foot (21 mm/m) from the boiler

to the vent terminal;

• For category IV boilers, be installed so as

to prevent accumulaon of condensate;

and

• For category IV boilers, where

necessary, have means provided for

drainage of condensate.

Vent Screen

Figure 15

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

4. Scroll to Parameter A2. Adjust Parameter A2 to “b” to conrm higher temperature vent

materials are in use.

5 The boiler is now set to allow higher exhaust temperatures. To exit parameter sengs and

enter normal operaon mode, press the SW1 le buon on the PC Board.

6 Replace the boiler’s front panel by reinserng the two screws that secure the panel.

See secon “9.4 Inial Sengs” for inial installaon. To set up later, follow the below steps.

1. Remove the boiler’s front panel by removing the two screws that secure the panel.

2. Locate the PC Board (lower le side of unit).

3. Press the SW1 le buon on the PC Board.

The instrucons in this secon explain how to adjust boiler sengs to

allow for higher exhaust temperatures. These instrucons apply only for

installaons using CPVC, listed Polypropylene, or stainless steel venng. If these instrucons are

not followed exactly, a re or carbon monoxide leak may result causing property damage,

personal injury, or death.

DO NOT adjust boiler sengs to allow higher exhaust temperatures when venng with PVC.

This product is equipped with safety devices to control the exhaust temperature which allows for a

variety of venng materials to be used in its nal installaon. The boiler is set up from the factory

to be installed with a PVC venng system and a built-in control to limit the exhaust temperature to

be below 149°F (65°C). In high temperature applicaons where the exhaust temperature can

exceed 149°F (65°C), CPVC, listed Polypropylene (PP), or stainless steel venng must be used. The

choice of venng materials may have an impact on overall performance. Also, If the vent material is

other than PVC (CPVC, listed PP or stainless steel) follow the procedure below to adjust the internal

sengs.

Figure 16

PC Board

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Two venng opons are available: Direct Vent and Non-Direct Vent (Room Air).

Concentric Pipe

Combuson air and exhaust vent directly

through a single concentric connecon. Hot

exhaust exits through the interior pipe, while

combuson air enters through the outer pipe.

Twin Pipe

Combuson air and exhaust vent

directly through separate penetraons.

See the Direct Vent secon for complete details.

Direct Vent (Concentric and Twin Pipe)

Opon 1

Opon 2

Non-Direct Vent (Room Air)

See the Non-Direct Vent secon for complete details.

Room air is used for combuson

while exhaust vents to the outside.

Exhaust

Combuson

Air

Exhaust

Combuson

Air

Exhaust

Combuson

Air

Combuson

Air

Figure 19

Figure 17

Figure 18

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Following is a list of vent components and terminaons for Direct Vent installaons (concentric and twin pipe).

Install the correct venng for your model according to the venng manufacturer’s instrucons and the guidelines

below. The informaon below is correct at me of publicaon and is subject to change without noce. Contact the

vent manufacturer for quesons related to the vent system, products, part numbers and instrucons.

Manufacturer Phone Web Site

Ubbink 800-621-9419 www.rinnai.us

Centrotherm 877-434-3432 www.centrotherm.us.com

Heat-Fab 800-772-0739 www.heaab.com

Metal Fab 800-835-2830 www.metal-fabinc.com

IPEX U.S.: 800-463-9572 Canada: 866-473-9462 www.ipexamerica.com, www.ipexinc.com

DuraVent 800-835-4429 www.duravent.com

Royal 800-232-5690 www.royalbuildingproducts.com

ECCO Manufacturing 877-955-4805 www.eccomfg.com

DiversiTech 800-995-2222 www.diversitech.com

Z-FLEX 603-669-5136 www.z-ex.com

2 in./4 in. CONCENTRIC VENT TERMINATIONS

229011NPP

229012NPP, 229031

229013NPP, 229032

2/4 Condensing Horizontal Term Kit 8.7 in.

2/4 Condensing Horizontal Term Kit 12 in.

2/4 Condensing Horizontal Term Kit 21 in.

224356NPP, 224359

2/4 Condensing Roof Discharge

Terminaon 20 in. above roof

710202NPP

2/4 Condensing 90 Degree Diverter Nose

(Use with Wall Terminal)

710215NPP

2/4 Condensing 45 Degree Diverter Nose

(Use with Wall Terminal)

196005, 197040

FGV Concentric Vent Kit (16 in. length)

196005PVC (Order from Rinnai)

196105, 197033

FGV Concentric Vent Kit (28 in. length)

196105PVC (Order from Rinnai)

196125

FGV Concentric Vent Kit (40 in. length)

196125PVC (Order from Rinnai)

UBBINK IPEX

Diagram

Horizontal

Vercal

Equivalent

Length ()

2 in./4 in. CONCENTRIC VENT TERMINATIONS

Product

Descripon

Manufacturer

Part Number

Manufacturer

Table 8

Table 7

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

2 in./4 in. CONCENTRIC VENT TERMINATIONS (Connued)

52CVKGVS6502

PVC Concentric Vent Kit

2 in. x 16 in.

52CVKGVS6502-28

PVC Concentric Vent Kit

2 in. x 28 in.

52CVKGVS6502-40

PVC Concentric Vent Kit

2 in. x 40 in.

ICRT2439

2 in. x 4 in. Concentric Roof

Terminaon

2PPS-VKL/VK-TCL

2 in. x 4 in. Vercal Terminaon

Cap Kit-Concentric

2PPS-HKL

2 in. x 4 in. Horizontal Terminaon

Kit-Concentric

190288

2 in. x 4 in. Concentric Horizontal

Terminaon

190295

2 in. x 4 in. Concentric Vercal

Terminaon

CVENT-2

2 in. x 4 in. Concentric Horizontal

Terminaon

2ZDCTH24

2 in. x 4 in. Concentric Horizontal

Terminaon

2ZDCTV24

2 in. x 4 in. Concentric Roof

Terminaon

ROYAL

CENTROTHERM

DURAVENT

ECCO

DIVERSITECH

Z-FLEX

Diagram

Horizontal

Vercal

Equivalent

Length ()

Product

Descripon

Manufacturer

Part Number

Manufacturer

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

3 in./5 in. CONCENTRIC VENT TERMINATIONS

223174PP

223176PP

223177PP

3/5 Condensing Horizontal Term Kit 8.7 in.

3/5 Condensing Horizontal Term Kit 12 in.

3/5 Condensing Horizontal Term Kit 21 in.

223186PP

3/5 Condensing Horizontal Diverter

Terminaon Kit 19 in.

224047PP

3/5 Condensing Raised Horizontal

Terminaon Kit

184162PP

3/5 Condensing Roof Discharge

Terminaon 20 in. above roof

196006, 197009

FGV Concentric Vent Kit 3 in. x 20 in.

196006PVC (Order from Rinnai)

196106, 197107

FGV Concentric Vent Kit 3 in. x 32 in.

196106PVC (Order from Rinnai)

196116, 197117

FGV Concentric Vent Kit 3 in. x 44 in.

196116PVC (Order from Rinnai)

52CVKGVS6503 (PVC)/

52CVKGVSF9003 (CPVC)

PVC/CPVC Concentric Vent Kit 3 in. x 20 in.

52CVKGVS6503-32 (PVC)/

52CVKGVSF9003-32 (CPVC)

PVC/CPVC Concentric Vent Kit 3 in. x 32 in.

52CVKGVS6503-44 (PVC)/

52CVKGVSF9003-44 (CPVC)

PVC/CPVC Concentric Vent Kit 3 in. x 44 in.

SC03HT Horizontal Terminaon Adapter

SC03VT Vercal Terminaon Adapter

ICRT3539

3''/5'' Concentric Roof Terminaon PPs-UV

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

UBBINK

ROYAL

IPEX

CENTRO-

THERM

HEAT-FAB

3 in./5 in. CONCENTRIC VENT TERMINATIONS

Table 9

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

3 in./5 in. CONCENTRIC VENT TERMINATIONS (Connued)

3CGRLSV Vercal Adapter

3CGRLSH Horizontal Adapter

3CGRVT Vercal Terminaon

3CGRHT Horizontal Terminaon

3PPS-VKL/VK-TCL

3 in. x 5 in. Vercal

Terminaon Cap

Kit-Concentric

3PPS-HKL

3 in. x 5 in. Horizontal

Terminaon Kit-Concentric

190388

3 in. x 5 in. Concentric

Horizontal Terminaon

190395

3 in. x 5 in. Concentric

Vercal Terminaon

CVENT-3

3 in. x 5 in. Concentric

Horizontal Terminaon

2ZDCTH35

3 in. x 5 in. Concentric

Horizontal Terminaon

2ZDCTV35

3 in. x 5 in. Concentric Roof

Terminaon

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

METAL-FAB

DURAVENT

ECCO

DIVERSITECH

Z-FLEX

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

2 in. TWIN PIPE TERMINATIONS

ISELL0287UV 2 in. 87° Long PPS-UV

ISTT0220 2 in. Terminaon Tee

ISLPT0202 2 in. Low Prole Wall

2PPS-HTPL

2 in. Twin Pipe

Terminaon

2PPS-HSTL 2 in. Single Horizontal

2PPS-TBL 2 in. Black UV Resistant

196984

FGV PVC Low Prole

Terminaon Kit

196984PVC (Order from Rinnai)

081216

FGV PVC Wall

Terminaon Kit

52SWVKGVS6502 PVC Side Wall Vent Kits

52WTVKGVS6502 PVC Wall Vent Kits

HVENT-2

2 in. Low Prole

Horizontal Vent Kit

CENTROTHERM DURAVENT

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent

Length ()

IPEX

ROYAL DIVERSITECH

Table 10

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

3 in. TWIN PIPE TERMINATIONS

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent

Length ()

3 in. TWIN PIPE TERMINATIONS

ISELL0387UV 3 in. 87° Long PPS-UV

ISTT0320 3 in. Terminaon Tee

ISLPT0303

3 in. Low Prole Wall

Terminaon

3PPS-HTPL

3 in. Twin Pipe

Terminaon

3PPS-HSTL

3 in. Single Horizontal

Terminaon

3PPS-TBL

3 in. Black UV

Resistant Tee

196985

FGV PVC Low Prole

Terminaon Kit

196985PVC (Order from Rinnai)

081219

FGV PVC Wall

Terminaon Kit

52SWVKGVS6503

PVC Side Wall Vent

Kits

52WTVKGVS6503 PVC Wall Vent Kits

HVENT-3

3 in. Low Prole

Horizontal Vent Kit

CENTROTHERM

DURAVENT

IPEX

ROYAL

DIVERSITECH

Table 11

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

VARIOUS 2 in. OR 3 in. SCHEDULE 40 PVC/CPVC TERMINATIONS

Approved PVC/CPVC Vent and Air Piping Material

Item Material

Standard for Installaon in North America

United States Canada

Thermoplasc Piping Materials

Vent or

Combuson Air

Intake Pipe and

Fings

PVC Schedule 40 ANSI/ASTM D1785

Thermoplasc vent pipe must be

cered to ULC S636. Intake

pipe may be of the materials

listed in this table.

PVC-DWV ANSI/ASTM D2665

CPVC Schedule 40 ANSI/ASTM F441

PVC Pipe Cement

and Primer

PVC ANSI/ASTM D2564

CPVC Schedule 40 ANSI/ASTM F493

PVC Vent Screens

Terminaon Vent

Screens

Polyethylene

• 2 in. Vent Screens (included in carton box) (IPEX Part

Number: 196050)

• 3 in. Vent Screens (IPEX Part Number: 196051)

Exhaust piping must be of solid core material. Refer to the PVC/CPVC manufacturer for

appropriate ngs, solvents or joining methods.

Manufacturer Vent Material

Ubbink PVC (Outer Vent), Polypropylene (Inner Vent)

Centrotherm Polypropylene

Heat-Fab Metal

Metal Fab Metal

IPEX PVC/CPVC

DuraVent Polypropylene

Royal PVC

ECCO Manufacturing Polypropylene

DiversiTech PVC/CPVC

Z-FLEX Polypropylene

APPROVED VENTING MATERIALS BY MANUFACTURER

Product Descripon Image Horizontal Vercal

Equivalent

Length ()

Air Filter Screen

N/A

Tee

90° Elbow

2.5 45° Elbow

Table 14

Table 13

Table 12

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Canadian Installaons

(CSA B149.1)

U.S. Installaons

(ANSI Z223.1 /NFPA 54)

Ref Descripon Direct Vent (Indoor Unit) Direct Vent (Indoor Unit)

A Clearance above grade, veranda, porch, deck, or balcony 12 in. (30 cm) 12 in. (30 cm)

B Clearance to window or door that may be opened 36 in. (91 cm) 12 in. (30 cm)

C Clearance to permanently closed window * *

Vercal clearance to venlated sot, located above the terminal within a

horizontal distance of 2  (61 cm) from the center line of the terminal

* *

E Clearance to unvenlated sot * *

F Clearance to outside corner * *

G Clearance to inside corner * *

Clearance to each side of center line extended above meter/regulator

assembly

* *

I Clearance to service regulator vent outlet

Above a regulator within 3 

(91 cm) horizontally of the vercal

center line of the regulator vent

outlet to a maximum vercal

distance of 15  (4 m)

Clearance to non-mechanical air supply inlet to building or the combuson

air inlet to any other appliance

36 in. (91 cm) 12 in. (30 cm)

K Clearance to a mechanical air supply inlet 6  (1.83 m)

3  (91 cm) above if within

10  (3 m) horizontally

Clearance above paved sidewalk or paved driveway located on public

property

7  (2.13 m) [1] *

M Clearance under veranda, porch, deck, or balcony 12 in. (30 cm) [2] *

AIR SUPPLY INLET

VENT TERMINAL

AREA WHERE TERMINAL

IS NOT PERMITTTED

SNOW

TERMINATION

Clearance in

Ref. A also

applies to

anticipated

snow line

Clearance to opposite wall is 24 in. (60 cm).

[1] A vent shall not terminate directly above a sidewalk or paved driveway that is

located between two single family dwellings and serves both dwellings.

[2] Permied only if veranda, porch, deck, or balcony is fully open on a minimum of

 Clearances are in accordance with local installaon codes and the

requirements of the gas supplier.

The informaon below applies to Concentric and Twin Pipe.

Table 15

Table 16

Figure 20

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Vent Sizes: 2 in. X 4 in. 3 in. X 5 in.

Vent Lengths: 75  (23 m) 160  (49 m)

• 45° elbow is equivalent to 3  (1 m)

• 90° elbow is equivalent to 6  (2 m)

All terminaons (horizontal and/or vercal)

must terminate 12 in. (0.30 m) above grade or

ancipated snow level.

Between terminals at same level

60 in. (1.52 m)

Between terminals at dierent levels

Note: 24 in. (0.61 m)

to wall or parapet

Inside

Corner

12 in.

(0.30 m)

60 in. (1.52 m)

vercally

between

terminals

Concentric Pipe: Terminaon Clearances

Concentric Pipe: Maximum Equivalent Vent Length

Figure 21

12 in.

(0.30 m)

12 in. (0.30 m)

Table 17

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Horizontal Wall

Terminaons

Vercal Roof

Terminaons

2 in. x 4 in. 2 in. x 4 in. and

3 in. x 5 in.

Concentric Pipe: Installaon Instrucons

1. Remove and discard screw from

concentric ue connecon.

2. Remove exhaust adapter ring (discard

for concentric venng conguraons.)

3. Install the concentric vent. Ensure it is

properly seated.

4. Secure the vent pipe to the concentric

ue connecon with the supplied screws.

IMPORTANT

Install the venng terminaon according to

the diagrams and instrucons in this manual.

Slope the venng 1/4 in. per foot (21 mm

per meter) toward the appliance according

to the vent manufacturer’s installaon

instrucons. Dispose of condensate per local

codes.

Vent Sizes

2 in / 4 in

(51 mm/100 mm)

3 in / 5 in

(76 mm/125 mm)

45° Elbow 3  (1 m) 2.5  (0.7 m)

90° Elbow 6  (2 m) 5  (1.5 m)

Concentric

Vent

Figure 25

Table 19

Table 18

Figure 24

Figure 23

Figure 22

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Vent Sizes:

• 2 in. PVC

• 2 in. (60 mm)

• 3 in. PVC

• 3 in. (80 mm)

Vent Lengths: 75  (23 m) 160  (49 m)

• 45° elbow is equivalent to 3  (1 m)

• 90° elbow is equivalent to 6  (2 m)

ACCEPTABLE ACCEPTABLE NOT ACCEPTABLE

90° Elbows,

Long Sweep

90° Elbows,

Short Sweep

90° Elbows,

Close Turn

Twin Pipe: Maximum Equivalent Vent Length

Vent length includes the addional venng, ngs and terminaons.

Table 21

Table 20

Combuson

Air

12 in. (0.30 m)

minimum

12 in. (0.30 m)

minimum

above

combuson

air opening

Roof

12 in. (0.30 m)

above grade or

ancipated snow

level

12 in. (0.30 m)

minimum

Exhaust

Twin Pipe: Terminaon Clearances

Twin Pipe Vercal Terminaon of Mulple Boilers

Sidewall Clearances

12 in. (30 cm)

4 in. (10 cm)

Combuson Air

Intake

Exhaust

8 in.

(20 cm)

Figure 26

Figure 28

Figure 27

Horizontal Vent and

Combuson Air Piping

Intake

Ground/Grade/Snow Level

Indicates area in which

intake cannot be located.

12 in.

(30 cm)

Min.

12 in.

(30 cm)

Min.

Intake

60 in.

(152 cm)

Min.

Exhaust

12 in.

(30 cm)

Min.

12 in.

(30 cm)

Min.

12 in.

(30 cm)

Min.

Intake

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

DO NOT apply PVC glues, solvents, or cleaners to the boiler’s combuson air or exhaust gasket

connecons. Failure to correctly assemble the components according to these instrucons may

result in property damage, personal injury, or death.

WARNING

This boiler is equipped with a 2 in. PVC pipe connecon. With the use of a pipe reducer, installers

can use a 3 in. pipe for the combuson air and exhaust.

Twin Pipe: Installaon Instrucons

Supplied Screw

Combuson Air

Vent Pipe

Exhaust

Vent Pipe

Supplied Screw

Figure 32

1. Remove and discard the screw from

the combuson air vent connecon.

2. Remove and discard the combuson

air vent cap.

3. Install the combuson air vent pipe.

Ensure it is properly seated.

Secure the combuson air vent pipe

to the combuson air vent connecon

with the supplied screw.

4. Install the exhaust vent pipe. Ensure it

is properly seated.

Secure the exhaust vent pipe to the

exhaust adapter ring with the supplied

screw.

Figure 30

Figure 29

Figure 31

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Rinnai cauons against installing the boiler in applicaons with venng in dierent pressure planes.

It is possible to have poor performance with this installaon.

Slope horizontal exhaust 1/4 in. per foot towards the boiler. DO NOT slope combuson air pipe

towards the boiler.

Twin Pipe: Example Vent Applicaons

This configuration requires the use of

a Concentric Vent

Termination

This configuration requires the use of a

Concentric Vent Termination

2 in. or 3 in. PVC/ CPVC

IPEX/ Royal Concentric

Side Wall Terminaon

Conguraon

2 in. or 3 in. PVC/CPVC

IPEX/ Royal Concentric

Vercal Terminaon

Conguraon

2 in. or 3 in. Schedule

40 PVC/CPVC or ABS

Snorkel Terminaon

Conguraon

2 in. or 3 in. Schedule 40

PVC/CPVC

or ABS Standard

upside down “U” Vercal

Terminaon Conguraon

2 in. or 3 in. Schedule

40 PVC/CPVC or ABS

Elbow or Tee Side Wall

Terminaon Conguraon

2 in. or 3 in. Schedule

40 PVC/CPVC or ABS Tee

Vercal Terminaon

Conguraon

2 in. or 3 in. PVC

Low Prole

Terminaon

Conguraon

Single

Pipe

Exhaust

Table 22

CAUTION

WARNING

Combuson

Air

Exhaust and

combuson air

MUST NOT be

brought

together into a

single PVC pipe

using

a pipe

ng.

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Canadian Installaons

(CSA B149.1)

U.S. Installaons

(ANSI Z223.1 /NFPA 54)

Ref Descripon Other than Direct Vent (Room Air) Other than Direct Vent (Room Air)

A Clearance above grade, veranda, porch, deck, or balcony 12 in. (30 cm) 12 in. (30 cm)

B Clearance to window or door that may be opened 36 in. (91 cm)

4  (1.2 m) below or to side of opening;

1  (300 mm) above opening

C Clearance to permanently closed window * *

Vercal clearance to venlated sot, located above the

terminal within a horizontal distance of 2  (61 cm) from

the center line of the terminal

* *

E Clearance to unvenlated sot * *

F Clearance to outside corner * *

G Clearance to inside corner * *

Clearance to each side of center line extended above

meter/regulator assembly

* *

I Clearance to service regulator vent outlet

Above a regulator within 3  (91 cm)

horizontally of the vercal center line of

the regulator vent outlet to a maximum

vercal distance of 15  (4 m)

Clearance to non-mechanical air supply inlet to building or

the combuson air inlet to any other appliance

36 in. (91 cm)

4  (1.2 m) below or to side of opening;

1  (300 mm) above opening

K Clearance to a mechanical air supply inlet 6  (1.83 m)

3  (91 cm) above if within 10 

(3 m) horizontally

Clearance above paved sidewalk or paved driveway located

on public property

7  (2.13 m) [1] 7  (2.13 m)

M Clearance under veranda, porch, deck, or balcony 12 in. (30 cm) [2] *

SNOW

TERMINATION

Clearance in

Ref. A also

applies to

anticipated

snow line

Clearance to opposite wall is 24 in. (60 cm).

[1] A vent shall not terminate directly above a sidewalk or paved driveway that is

located between two single family dwellings and serves both dwellings.

[2] Permied only if veranda, porch, deck, or balcony is fully open on a minimum

of two sides beneath the oor.

 Clearances are in accordance with local installaon codes and the

requirements of the gas supplier.

Room Air: Terminaon Clearances

Table 24

Table 23

Figure 33

Regulator

vent outlet

AIR SUPPLY INLET

VENT TERMINAL

AREA WHERE TERMINAL IS

NOT PERMITTTED

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Room Air Vercal Terminaon of Mulple Boilers

Exhaust Terminaon Clearances for Internal (Indoor) Room Air Applicaons

Exhaust

Roof

12 in. (0.30 m)

minimum

12 in. (0.30 m) above

grade or ancipated

snow level

IMPORTANT

• Installaon of Room Air must use listed Category IV venng.

• All terminaons (horizontal and/or vercal) must terminate 12 in. above grade or

ancipated snow level.

Figure 35

12 in.

(0.30 m)

Inside

Corner

60 in. (1.52 m)

Vercally

Between

terminals

12 in.

(0.30 m)

Figure 34

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• This boiler requires adequate combuson air for venlaon and diluon of ue gases.

Failure to provide adequate combuson air can result in unit failure, re, explosion, serious

bodily injury or death. Use the following methods to ensure adequate combuson air is

available for correct and safe operaon of this boiler.

• Direct Venng is recommended in unusually ght buildings or in installaon locaons

subject to signicant negave air pressure.

Combuson air must be free of corrosive chemicals. Do not provide combuson air from

corrosive environments. Appliance failure due to corrosive air is not covered by warranty.

IMPORTANT

Vent Sizes

• 2 in. PVC

• 2 in. (60 mm) PP

• 3 in. PVC

• 3 in. (80 mm) PP

Ubbink Rolux® Flexible Vent System:

• 2 in. (60 mm) PP

Vent Lengths 75  (23 m) 160  (49 m) 50  (15 m)

• 45° elbow is equivalent to 3  (1 m)

ACCEPTABLE ACCEPTABLE NOT ACCEPTABLE

90° Elbows,

Long Sweep

90° Elbows,

Short Sweep

90° Elbows,

Close Turn

Vent length includes the addional venng, ngs and terminaons.

Room Air: Maximum Equivalent Vent Length

Room Air: Combuson Air

For applicaons containing corrosive indoor air, this appliance must be installed as direct vent.

DO NOT use room air in applicaons where combuson air contains acid forming chemicals such as

sulfur, uorine and chlorine. These chemicals have been found to cause rapid damage and decay

and can become toxic when used as combuson air in gas appliances. Such chemicals can be found

in, but not limited to bleach, ammonia, cat lier, aerosol sprays, cleaning solvents, varnish, paint

and air fresheners. Do not store these products or similar products in the vicinity of this boiler.

Table 26

Table 25

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Unconned Space

An unconned space is dened in Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54 as “a space whose

volume is not less than 50 cubic feet per 1000 Btu/hr (4.8 m3 per kW per hour) of the aggregate

input rang of all appliances installed in that space. Rooms communicang directly with the space in

which the appliances are installed, through openings not furnished with doors, are considered a part

of the unconned space.” If the “unconned space” containing the appliance(s) is in a building with

ght construcon, addional outside air may be required for proper operaon. Outside air openings

should be sized the same as for a conned space.

Conned Space

A conned space is dened in the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54 as "a space whose

volume is less than 50 cubic feet per 1000 Btu/hr (4.8 m3 per kW per hour) of the aggregate input

rang of all appliances installed in that space." Examples include a small room, closet, alcove, ulity

room, etc. A conned space must have two combuson air openings. Size the combuson air

openings based on the Btu input for all gas ulizaon equipment in the space and the method by

which combuson air is supplied.

Using Indoor Air For Combuson

When using air from other room(s) in the building, the total volume of the room(s) must be of

adequate volume (greater than 50 cubic feet per 1000 Btu/hr). Combuson air openings between

joining rooms must have at least 1 square inch of free area for each 1000 Btu/hr, but not less than

100 square inches each.

Using Outdoor Air For Combuson

Outdoor air can be provided to a conned space through two permanent openings, one

commencing within 12 in. (0.30 m) of the top and one commencing within 12 in. (0.30 m) of the

boom, of the conned space. The openings shall communicate to the outside by one of two ways.

When communicang directly with the outdoors through horizontal ducts, each opening shall have

a minimum free area of 1 in

/2000 Btu/hr (1100 mm

/kW) of total input rang of all appliances in

the conned space.

Note: If ducts are used, the cross seconal area of the duct must be greater than or equal to the

required free area of the openings to which they are connected.

Louvers and Grills

When sizing the permanent opening consideraon must be taken for the design of the louvers or

grills to maintain the required free area required for all gas ulizing equipment in the space. If the

free area of the louver or grill design is not available, assume wood louvers will have 25% free area

and metal louvers or grills will have 75% free area. Under no circumstance should the louver, grill or

screen have openings smaller than 1/4 in.

Examples: Wood: 10 in. x 12 in. x 0.25 = 30 in.

Metal: 10 in. x 12 in. x 0.75 = 90 in.

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Combuson air provided to the appliance should not be taken from any area of the structure

that may produce a negave pressure (i.e. exhaust fans, powered venlaon fans).

Locaon

To maintain proper circulaon of combuson air two permanent openings (one upper, one lower)

must be posioned in conned spaces. The upper shall be within 12 in. (0.30 m) of the top of the

conned space and the lower opening shall be within 12 in. (0.30 m) of the boom of the conned

space. Openings must be posioned as to never be obstructed.

12 in.

(300 mm)

10 in.

(250 mm)

□

Verify all combuson air opening sizes are correct.

□

Ensure that the Combuson Air Requirements are followed that will provide sucient

combuson air for the appliance.

□

DO NOT use room air for combuson in applicaons where the indoor air is corrosive.

□

Verify that adequate combuson air is available for all appliances installed in the space.

□

Installaon complies with Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54 as well as local

and state regulaons therein.

To prevent possible personal injury or death due to asphyxiaon, common venng with other

manufacturer’s induced dra appliances is not allowed.

IMPORTANT

Checklist for Combuson Air and Venng Requirements

Figure 36

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

1. Remove and discard screw from

combuson air vent connecon.

2. Remove and discard the combuson air

vent cap.

3. Install the combuson air vent pipe.

Ensure it is properly seated.

Secure the combuson air vent pipe to

the combuson air vent connecon

with the supplied screw.

Room Air: Installaon Instrucons

Combuson Air

Vent Pipe

Supplied Screw

4. Place the vent screen or room air screen

inside elbow and secure with the supplied

screw. Use the room air screen for

environments where room air is dusty.

Notes:

• 2 in vent screen supplied with

boiler.

• Room air screen is available as

an accessory.

Supplied Screw

Elbow

Vent

Screen

5. Install the exhaust vent pipe. Ensure it

is properly seated.

Secure the exhaust vent pipe to the

exhaust adapter ring with the supplied

screw.

Exhaust Vent

Pipe

Supplied Screw

Figure 41

Figure 40

Figure 39

Figure 38

Figure 37

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Rinnai cauons against installing the boiler in applicaons with venng in

dierent pressure planes. It is possible to have poor performance with this

installaon.

Room Air: Example Vent Applicaons

2 in. or 3 in.

Schedule 40

PVC/CPVC or ABS

Snorkel

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC or

ABS Elbow or

Tee Side Wall

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC or

ABS Standard

Upside Down

“U” Vercal

Terminaon

conguraon

2 in. or 3 in.

Schedule 40 PVC/

CPVC or ABS Tee

Vercal

Terminaon

Conguraon

Slope horizontal exhaust 1/4 in. per foot

towards the boiler.

Ubbink exible

venng approved

for vercal

non-direct vent

(Room Air)

applicaons only.

Refer to the ex

vent manual for

further details.

PP Flex

Venng

B-Vent Pipe

4 in. (102 mm)

Table 27

CAUTION

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

The Rinnai RX Series Tankless Water Heater oers an outdoor vent cap as an accessory to enable

outdoor installaons. This is not an acceptable accessory for the I-Series Plus Condensing Boiler.

The boiler is only approved to be installed indoors with appropriate venng to the outdoors.

Outdoor Vent Cap Applicaon

Figure 42

Outdoor Vent Cap

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• The boiler shall be installed such that

the gas ignion system components are

protected from water (dripping,

spraying, rain, etc.) during appliance

operaon and service (circulator

replacement, condensate trap, control

replacement, etc.).

• A sediment trap must be provided

upstream of the gas controls.

• A manual gas shuto valve between the

gas supply and the boiler must be

installed.

• A licensed professional must install the

gas supply.

• Turn o 120V power supply.

• Turn o the gas.

• Gas is ammable. Do not smoke or

provide other ignion sources while

working with gas.

• Do not turn on the boiler or gas unl all

fumes are gone.

• Conrm the gas type before connecng.

Failure to install correct gas type may

result in injury or damage to the unit.

1. Check the type of gas and gas supply

pressure before connecng the boiler. If

the boiler is not of the gas type that the

building is supplied with, converng the gas

type of the boiler is necessary. A gas

conversion kit is included with the boiler.

Refer to secon “14.4 Gas Conversion” in

the Appendix for gas conversion

instrucons.

2. Check the gas supply pressure immediately

upstream at a locaon provided by the gas

company. Supplied gas pressure must be

within the limits shown in secon “3.4

Specicaons” with all gas appliances

operang.

3. Before placing the appliance in operaon,

all joints including the heater must be

checked for gas ghtness by means of

soap, gas leak detector soluon, or an

equivalent nonammable soluon, as

applicable. Since some leak test soluons,

including soap and water, may cause

corrosion or stress cracking, the piping shall

be rinsed with water aer tesng, unless it

has been determined that the leak test

soluon is non-corrosive.

4. Use approved and appropriately sized

connectors to connect the boiler to the gas

line. Purge the gas line of any debris before

connecon to the boiler.

5. Any compound used on the threaded joint

of the gas piping shall be a type that resists

the acon of liqueed petroleum gas

(Propane/LPG).

6. The gas supply line shall be gas ght, sized,

and so installed as to provide a supply of

gas sucient to meet the maximum

demand of the heater and all other gas

consuming appliances at the locaon

without loss of pressure. If in doubt about

the size of the gas line, refer to secon “6.3

Gas Pipe Sizing Reference Tables.”

7. Perform a leak and pressure test prior to

operang the boiler. If a leak is detected,

do not operate the boiler unl the leak is

repaired.

Topics in this secon

• Connect the Gas Supply

• Gas Operang Instrucons

• Gas Pipe Sizing Reference Tables

Gas Shuto Valve

Figure 43

IMPORTANT

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

WARNING: If you do not follow these instrucons EXACTLY, a re or explosion may

result causing property damage, personal injury or loss of life.

A. This appliance does not have a pilot. It is equipped with an ignion device which

automacally lights the burner. Do not try to light the burner by hand.

B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next

to the oor because some gas is heavier than air and will sele on the oor.

WHAT TO DO IF YOU SMELL GAS:

• DO NOT try to light any appliance.

• DO NOT touch any electric switch; DO NOT use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas

supplier’s instrucons.

• If you cannot reach your gas supplier, call the re department.

C. Use only your hand to turn the gas control valve. Never use tools. If the gas control

valve will not turn by hand, don’t try to repair it, call a qualied service technician.

Force or aempted repair may result in a re or explosion.

D. Do not use this appliance if any part has been under water. Immediately call a

qualied service technician to inspect the appliance and to replace any part of the

control system and any gas control which has been under water.

1. Set the temperature controller to the lowest seng.

2. Turn o all electric power to the appliance if service is to be performed.

3. Turn the manual gas control valve located at gas inlet of appliance clockwise

to the OFF posion.

TO TURN OFF GAS TO APPLIANCE

1. STOP! Read the safety informaon above on this label.

2. Set the temperature controller to lowest seng.

3. Turn o all electric power to the appliance.

4. This appliance does not have a pilot. It is equipped with a direct ignion device which

automacally lights the burner. DO NOT try to light the burner by hand.

5. Turn the manual gas control valve located at gas inlet of appliance clockwise to

the OFF posion.

6. Wait ve (5) minutes to clear out any gas. Then smell for gas, including near the oor.

If you smell gas, STOP! Follow “B” in the safety informaon above on this label. If you

don’t smell gas, go to the next step.

7. Turn the manual gas control valve located at gas inlet of appliance counter

clockwise to the ON posion.

8. Turn on all electric power to the appliance.

9. Set the temperature controller to desired seng.

10. If the appliance will not operate, follow the instrucons “To Turn O Gas To

Appliance” and call your service technician or gas supplier.

OPERATING INSTRUCTIONS

FOR YOUR SAFETY READ BEFORE OPERATING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

The gas supply must be capable of handling the enre gas load

required at the locaon. Gas line sizing is based on gas type,

the pressure drop in the system, the gas pressure supplied,

and gas line type. For gas pipe sizing, refer to the Naonal Fuel

Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and

Propane Installaon Code, CSA B149.1

For some tables, you will need to determine the cubic feet per

hour of gas required by dividing the gas input by the heang

value of the gas (available from the local gas company). The

gas input needs to include all gas products at the locaon and

the maximum Btu usage at full load when all gas products are

in use.

Use the table for your gas type and pipe type to nd the pipe

size required. The pipe size must be able to provide the

required cubic feet per hour of gas or the required Btu/hr.

The informaon below is provided as an example. The

appropriate table from the applicable code must be used.

Schedule 40 Metallic Pipe

Inlet Pressure: Less than 2 PSI

Specic Gravity: 0.60

Informaon in table obtained from

NFPA 54, ANSI Z223.1.

Pressure Drop 0.5 in. w.c.

Nominal Pipe Size (in.)

1/2 3/4 1 1 1/4

Length in  (meters) Capacity in Cubic Feet of Gas per Hour

10 (3)

172 360 678 1,390

20 (6)

118 247 466 957

30 (9)

95 199 374 768

40 (12)

81 170 320 657

50 (15)

72 151 284 583

60 (18)

65 137 257 528

70 (21)

60 126 237 486

80 (24)

56 117 220 452

90 (27)

52 110 207 424

100 (30)

50 104 195 400

EXAMPLE

Rinnai Model Gas Input:

Addional Appliance Total Gas

Input:

Heang Value of Gas:

Cubic Feet Per Hour (CFH):

ANSWER:

65,000

Btu/hr

1,000

Btu/

199,000

Btu/hr

199,000+65,000

(CFH) =

1000

264

/HR

CFH =

For this example, the pipe

diameter must be at least 3/4 in.

pipe size and 10  (3 m) in

length.

A + B

(CFH) =

Instrucons: Enter values in empty boxes.

Rinnai Model Gas Input:

Addional Appliance Total Gas Input:

Heang Value of Gas:

Cubic Feet Per Hour (CFH):

ANSWER:

Btu/hr

Btu/

Btu/hr

(CFH) =

/HR

CFH =

A + B

(CFH) =

GAS PIPE SIZING CALCULATION WORKSHEET

Natural Gas

Table 28

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Pressure Drop 0.5 in. w.c.

Nominal Inside Pipe Size (in.)

1/2 3/4 1 1 1/4

Length in  (meters) Capacity in Thousands of Btu/hr

10 (3) 291 608 1,150 2,350

20 (6) 200 418 787 1,620

30 (9) 160 336 632 1,300

40 (12) 137 287 541 1,110

50 (15) 122 255 480 985

60 (18) 110 231 434 892

80 (24) 101 212 400 821

100 (30) 94 197 372 763

Pressure Drop 3.0 in. w.c.

Schedule 40 Metallic Pipe

Inlet Pressure: Less than 2 PSI

Specic Gravity: 0.6

Nominal Pipe Size (in.)

1/2 3/4 1 1 1/4

Length in  (meters) Capacity in Cubic Feet of Gas per Hour

10 (3) 454 949 1,790 3,670

20 (6) 312 652 1,230 2,520

30 (9) 250 524 986 2,030

40 (12) 214 448 844 1,730

50 (15) 190 397 748 1,540

60 (18) 172 360 678 1,390

70 (21) 158 331 624 1,280

80 (24) 147 308 580 1,190

90 (27) 138 289 544 1,120

100 (30) 131 273 514 1,060

Informaon in table obtained from

NFPA 54, ANSI Z223.1.

Informaon in table obtained from

NFPA 54, ANSI Z223.1.

Intended use: Inial supply pressure

of 8.0 in. w.c. or greater.

Schedule 40 Metallic Pipe

Inlet Pressure: 11 in. w.c.

Specic Gravity: 1.50

EXAMPLE

Rinnai Model Gas Input:

Addional Appliance total Gas Input:

Heang Value of Gas:

Cubic Feet Per Hour (CFH):

ANSWER:

65,000

Btu/hr

1,000

Btu/

199,000

Btu/hr

199,000+65,000

(CFH) =

1000

264



/HR

CFH =

For this example, the pipe diameter

must be at least 1/2 in. nominal

pipe size and 20  (6 m) in length.

A + B

(CFH) =

EXAMPLE

Rinnai Model Gas Input:

Addional Appliance Total Gas Input:

Total Gas Input:

ANSWER:

65,000

Btu/hr

199,000

Btu/hr

= Btu/hr

Total Gas

Input

264,000

For this example, the pipe diameter

must be at least 1/2 in. nominal

pipe size and 10  (3 m) in length.

Total

Gas

Input

= A + B

Total

Gas

Input

199,000+65,000

Natural Gas

Propane (Undiluted)

Table 30

Table 29

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• When removing the plasc sealing caps

from the boiler connecons, water may

come out of the boiler due to live re

tesng during manufacturing.

• The boiler, when used in connecon with

a refrigeraon system, must be installed

so the chilled medium is piped in parallel

with the boiler with appropriate valves to

prevent the chilled medium from

entering the boiler.

• The boiler piping system of a hot water

boiler connected to heang coils located

in air handling units where they may be

exposed to refrigerated air circulaon

must be equipped with ow control

valves or other automac means to

prevent gravity circulaon of the boiler

water during the cooling cycle.

• Some installaons with mulple zone

valves may require a dierenal bypass,

which will prevent excessively high ow

rates through a single zone when the

other zone valves are closed.

To connect the water supply, follow the

instrucons below.

For standard installaons, refer to the “Piping

Diagram for Basic Central Heang Installaon”

in this chapter.

1. Plumb the heang return line to the

heang return connecon on the boom

of the boiler.

Topics in this secon

• Guidelines

• Instrucons

• Common CH Components

• Piping Diagram for a Basic CH System

(With Hydraulic Separaon)

• Hydraulic Separaon

• Connect the Pressure Relief Valves

• Connect the Condensate Drain Line

The boiler may not be installed directly to a

heang system where polybutylene or other

oxygen permeable piping is used.

Water connecons to the boiler should follow

all state and local plumbing codes.

IMPORTANT

• It is required to include an air separator on

the central heang supply of the system.

• Hydraulic separaon with primary/

secondary piping is required when

connecng the water supply (see secon

“7.5 Hydraulic Separaon” for more

informaon).

• System piping should be insulated when

freezing is a potenal concern.

• All piping must comply with local, state,

naonal or ASME code as appropriate.

IMPORTANT

Purge the heang system to remove all

debris and air. Debris and air in the lines

will damage the boiler.

Figure 44

Heang Return Connecon

CAUTION

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

2. Plumb the heang supply line to the

heang supply connecon on the boom

of the boiler.

Listed below are common components in a

Central Heang system. Refer to the diagram

on the next page.

• Expansion Tank - A properly sized

expansion tank charged to 2 PSI (14 kPa)

below the cold system pressure is required

to limit pressure changes in the heang

system. When replacing an expansion tank,

consult the expansion tank manufacturer

for sizing.

• Air Separator - An air separator is needed

on the central heang supply side of the

system to remove any air that may be

present in the piping.

• Pressure/Temperature Gauge - The

current pressure and temperature will

alternately be displayed on the boiler

control panel. A port for an external gauge

is present in the Primary-Secondary

Heang Kit accessory oered by Rinnai.

• Pressure Relief Valve (PRV) - A PRV

located directly on the supply side of the

boiler is required. The PRV must be 3/4

in. with at least 30 PSI (207 kPa) and a

maximum of 45 PSI (310 kPa). A 30 PSI

(207 kPa) PRV is supplied with the boiler.

A port for the central heang PRV is

present in the Primary-Secondary Heang

Kit accessory oered by Rinnai.

• Oxygen Eliminaon - The boiler may only

be installed in a pressurized closed-loop

heang system, free of air and other

impuries. If using oxygen permeable

tubing in the central heang system, a

plate heat exchanger is necessary to

isolate the tubing and boiler.

• Water Fill Valve - Maintains proper water

pressure in the central heang circuit.

• Back Flow Preventer - Use a back ow

preventer in the lling circuit to the

appliance as required by local code.

• Low Water Cut O (LWCO) - This boiler

has a factory-installed pressure sensor

type LWCO. The boiler's internal LWCO is

not serviceable or adjustable. Check your

local codes to determine if a LWCO is

required and if this device conforms to

the local code. If a LWCO is required to

be installed, the probe must be located

higher than the minimum safe water

level. When a LWCO is installed, it must

be wired back to the appropriate

terminal on the boiler PC Board.

• Dirt Trap - Protects the boiler from debris

in the plumbing system.

Heang Supply Connecon

Figure 45

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 46

Air Vent

CH System Common Components Diagram

SYSTEM

RETURN

Expansion

tank

Pressure Gauge

Fill valve with

pressure gauge

Ball Valve

Backow

Preventer

SYSTEM

SUPPLY

Air Separator

Pressure Relief Valve

(supplied with boiler)

Low Water

Cut O

(if required by

local code)

Boiler Pump

Dirt

Trap

Primary-

Secondary

Heang Kit

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

This picture illustrates a suggested

arrangement. Some of the ngs

are oponal.

LEGEND

Figure 47

This schemac shows an

example of a simple single zone

system with primary/secondary

piping by hydraulic separaon.

IMPORTANT

Outdoor

Sensor

Thermostat

Heat Emier

Oponal Low Water Cut-O (LWCO)

This is not an engineering drawing; it is intended only as a guide and not as a replacement for professional engineering project

drawings. This drawing is not intended to describe a complete system. It is up to the contractor or engineer to determine the

necessary components and conguraon of the parcular system to be installed. The drawing does not imply compliance with local

building code requirements. It is the responsibility of the contractor or engineer to ensure the installaon is in accordance with all

local building codes. Confer with local building ocials before installaon.

Purge Staon

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Rinnai requires the use of hydraulic separaon between the boiler and central heang system.

Hydraulic separaon and primary/secondary piping allow two or more circulators in a hydronic

system to operate independently, without interfering with ow in connecng piping circuits.

Closely Spaced Tees

NOTE

When Rinnai I-Series Plus Boilers are in use with Rinnai air handlers, please reference the air

handler Installaon and Operaon Manual for installaon and performance details.

Examples of Hydraulic Separaon

Closely spaced tees and low loss headers are common examples of hydraulic separators and are

used to separate the boiler loop from the central heang loop.

Figure 48

Distance no

more than four

pipe diameters

IMPORTANT

For closely spaced tee installaons, the separaon at the

header is to be no more than four pipe diameters.

Boiler Supply

Boiler Return

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 49

Low Loss Header

To Heang Supply

From Heang Return

Shut O Valves

Pressure Relief Valve

Low Loss

Header

IMPORTANT

If using a low loss header, install the PRV and shut o valves between the boiler

and low loss header (as illustrated in the above image).

Boiler Pump

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

The I-Series Heat-Only Boiler does not have an included a boiler pump. An external boiler pump

must be installed and sized to the ow rate and pressure drop through the boiler, system piping,

and system components. Larger systems, or systems with large pressure drops, should incorporate

a form of hydraulic separaon, such as closely spaced tees or a low loss header.

Below are opons for the primary pump circulang across the boiler. No addional pressure drop is

accounted for through the system piping or system components. Recommended circulaon pumps

are listed below. The maximum amperage permied is 2 Amps.

Manufacturer part numbers are correct at me of publicaon and are subject to change without noce. Contact

manufacturer to conrm performance and part number prior to placing an order.

Model

Pump Model

Grundfos Taco Bell & Gosse Armstrong

IP060S UPS 15-42 007-IFC NRF-25 ASTRO 230CI

IP090S UPS 15-42 007-IFC NRF-25 ASTRO 230CI

IP120S UPS 15-58 008-IFC NRF-25 ASTRO 230CI

IP150S UPS 26-99 0011-IFC N/A ASTRO 280CI

IP060S and IP090S

IP120S and IP150S

Water Flow (GPM)

Pressure Loss (Feet of Head)

Figure 50

Table 31

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

WARNING

An approved pressure relief valve is required

by the American Naonal Standard (ANSI

Z21.13) and ASME Boiler and Pressure Vessel

Code, Secon IV (Heang Boilers) for all water

heang systems and shall be accessible for

servicing (an approved pressure relief valve is

supplied with the boiler). When connecng a

pressure relief valve, follow the guidelines

below:

• The pressure relief valve must comply with

the standard for Relief Valves and

Automac Gas Shuto Devices for Hot

Water Supply Systems ANSI Z21.22, the

standard Temperature, Pressure,

Temperature and Pressure Relief Valves and

Vacuum Relief Valves, CAN1-4.4, and/or the

ANSI/ASME Boiler and Pressure Vessel Code,

Secon IV (Heang Boilers).

• The pressure relief valve must be rated up

to 30 psi for central heang systems, and to

at least the maximum Btu/hr of the

appliance.

• The discharge from the pressure relief valve

should be piped to the ground or into a

drain system per local codes.

• The pressure relief valve must be manually

operated once a year to check for correct

operaon.

• The discharge line from the pressure relief

valve should pitch downward and terminate

6 in. (152 mm) above drains where

discharge will be clearly visible.

An ASME 30 psi safety pressure relief

valve is included with the boiler and

must be ed before any shut o valve

in the system.

• DO NOT plumb the pressure relief

valve with the condensate drain;

both must be plumbed

independently to drain.

• DO NOT plug the pressure relief

valve and do not install any reducing

ngs or other restricons in the

relief line. The pressure relief line

should allow for complete drainage

of the valve and the line.

• DO NOT place any other valve or

shuto device between the pressure

relief valve and the boiler.

Water discharged from the pressure relief

valve could cause severe burns instantly or

death from scalds.

• The discharge end of the line shall be plain

(unthreaded) and a minimum of 3/4 in.

nominal pipe diameter. The discharge line

material must be suitable for water at least

180°Fahrenheit (82°Celsius).

• If a pressure relief valve discharges

periodically, this may be due to thermal

expansion in a closed water supply system.

Contact the water supplier or local

plumbing inspector on how to correct this

situaon. Do not plug the pressure relief

valve.

• The American Naonal Standard (ANSI

Z21.13) does not require a combinaon

temperature and pressure relief valve for

this appliance. However, local codes may

require a combinaon temperature and

pressure relief valve.

• Protect pressure relief valve and pressure

relief valve discharge line from freezing. Do

not plug or restrict ow of the pressure

relief valve.

IMPORTANT

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

To prevent condensate damage, follow these

guidelines

• Do not plumb the condensate drain with

the pressure relief valve; both must be

plumbed independently to drain.

• All condensate must drain and be

disposed of according to local codes.

• Use only corrosion resistant materials

for the condensate drain lines such as

PVC pipe or plasc hose.

• The condensate drain pipe (along its

enre length) must be at least the same

diameter as the drain line (1/2 in.

MNPT).

• Condensaon drain lines installed in

areas that are subject to freezing

temperatures should be wrapped with

an approved supplemental heat source.

Install per manufacturer’s instrucons.

• Slope the condensate drain lines toward

the inside oor drain or condensate

pump.

• The end of the condensate drain pipe

should be open to the atmosphere. The

end should not be under water or other

substances.

• For external (outdoor) installaons, to

minimize freezing of the condensate, run

the condensate drain line through an

interior wall or between insulaon and

an interior wall.

• If a oor drain is not available or the

drain is above the level of the

condensate drain, a condensate pump

should be installed.

• A condensate neutralizer kit (part number

804000074) is available from Rinnai. The kit

allows condensate to ow through

neutralizing media that raises the pH of the

condensate to a level that will help prevent

corrosion of the drain and public sewer

system. Refer to secon “3.6 Accessories” for

more informaon.

• The condensate drain pipe should be as short

as possible and have a downward pitch.

• Pour approximately 10 ounces (1.25 cups) of

water directly into the boiler’s exhaust port.

• DO NOT connect the condensate drain line

with an air condioning evaporator coil

drain.

• Boilers have an integrated condensate trap.

DO NOT install an external condensate trap.

CORRECT NOT CORRECT

Pipe submerged in

water

Pipe open to

atmosphere

Water

Level

Water

Level

Figure 52

Figure 51

Refer to neutralizer Installaon Manual and local

codes for neutralizer installaon guidelines.

Image is for reference purposes only.

Pipe open to

atmosphere

Condensate Pump

*Overow bypass

* Safety overow if condensate drain

becomes clogged.

Air Gap

Figure 53

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

To connect the condensate drain pipe:

1. Apply thread sealant to 1/2 in. NPT

condensate drain port.

2. By hand, thread 1/2 in. NPT ng onto

condensate drain port.

3. Follow the steps in the next secon:

“7.8 Condensate Pump Safety Switch

Wiring.”

4. Select an appropriate length of wire

(18 AWG or greater) and strip the

insulaon o the ends. Follow the

wiring guidelines established by the

Naonal Electrical Code (NEC).

5. With wire nuts or other approved wire

connectors, connect the “To

Condensate Pump” wires to the

normally open contacts on the

condensate pump (see image below).

6. Reconnect power to the boiler and

press the “On/O” buon on the

controller.

Test Operaon

1. Test the operaon of the shut o

switch by unplugging the condensate

pump and lling the condensate

reservoir with water unl the oat

switch closes the circuit.

2. Turn on the boiler.

3. The boiler displays diagnosc code

“250.”

4. Plug in the condensate pump and

conrm condensate is owing out of

the reservoir.

5. Turn o the boiler by pressing the

“On/O” buon on the controller.

Wait ve seconds, then turn the

power back on. This will clear the

diagnosc code.

IMPORTANT

DO NOT use a wrench to ghten the

condensate drain pipe connecon as this

could cause the connecon to break.

IMPORTANT

The steps in this secon must conform with

local codes and the guidelines established

by the Naonal Electrical Code (NEC).

The condensate pump (if installed) should

be wired to deacvate the boiler in the

event the condensate pump fails.

1. Disconnect power from the boiler.

2. Open the boiler cover and locate two

white wires labeled “To Condensate

Pump” (the wires may be located

behind the PC Board).

3. Cut crimp connectors o white wires

and strip the insulaon o of the two

ends.

Boiler condensate pump safety switch is

NO (normally open) and faults when the

circuit closes.

See visual illustraon on next page.

IMPORTANT

Cut o

crimp connectors

To Condensate Pump Safety Switch

Strip insulaon

o both ends

of wire

1/2 in.

NPT

Figure 54

Figure 55

Condensate Drain

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 56

Condensate Pump Safety Switch Installaon

Wire Nut Connecng

Two Wires

To Condensate Pump

Safety Switch Wires

Installer-Supplied Wires

Safety Switch Wires*

Condensate Pump (installer-supplied)

Includes internal safety switch and power cord.

Power cord must be plugged into power source.

COM

Safety switch wires connect to the NO and

COM contacts on the safety switch.

• NO - Normally Open

• NC - Normally Closed

• COM - Common (Neutral)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Topics in this secon

• Guidelines

• Indirect Tank Control Opons

• Indirect Tank Electrical Connecons

• Simultaneous CH and DHW Operaon

• Indirect Tank Parameter Sengs

• Piping Diagram for a Basic DHW Installaon

• The piping (including soldering materials)

and components connected to this

appliance must be approved for use in

potable water systems.

• Purge the water line to remove all debris

and air. Debris will damage the boiler.

• DHW must not be connected to a system

that was previously used with a non-potable

water heang appliance.

• DO NOT introduce toxic chemicals such as

those used for boiler water treatment to the

potable water used for central heang into

the DHW system.

Hot water can cause rst degree burns with

exposure for as lile as:

• 3 seconds at 140°F (60°C)

• 20 seconds at 130°F (54°C)

• 8 minutes at 120°F (49°C)

Children, disabled, or elderly are at highest

risk of being scalded. Feel water before

bathing or showering.

Water temperatures over

125° F (52° C) can cause

severe burns or scalding

resulng in death.

DANGER

This boiler provides DHW through an indirect

tank. The boiler incorporates temperature

control features for the boiler and indirect

tank controls, including indirect tank heang

priority.

The indirect tank temperature is controlled

through either a thermistor (default) or

thermostat.

• Thermistor (Default): In thermistor control

of the tank, 180°F (82°C) is the maximum

supply temperature. The higher the supply

temperature to the tank, the quicker the

tank will heat up. If 180°F (82°C) is too high,

select other temperature sengs as

appropriate. When thermistor control is

selected, Parameter 31 becomes available;

this parameter selects the dierenal

temperature between the indirect tank

setpoint temperature and the recognized

temperature of the thermistor. The smaller

the value, the more frequently the indirect

tank will call for heat.

• Thermostat: If thermostat control of the

tank is desired, the thermostat connects to

the T/T2 connecon on the boiler PC

board. In thermostat control of the tank,

180°F (default) (82°C) is the maximum

supply temperature. The higher the supply

temperature to the tank, the quicker the

tank will heat up. If 180°F (82°C) is too high,

select other temperature sengs as

appropriate. Ensure the indirect tank

supply temperature is 18°F (10°C) higher

than the set point temperature of the tank

thermostat.

HOT

BURN

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

When parameter 28 is set to “A”, the default posion, Parameter 32 becomes available. The opon

to select an indirect tank pump (default) or a 3-Way Valve with the boiler pump for recovering the

indirect tank becomes available. If the 3-Way Valve opon is desired, only 120VAC 3-Way Valves

may be used. Do not use a 3-Way Valve if simultaneous CH and DHW via an indirect tank is desired.

1. Remove the boiler’s front panel by removing the two screws that secure the panel.

2. Locate the PC Board (lower le side of unit).

3. Connect the indirect tank thermistor to the terminals shown below using minimum 18 AWG

wiring to the two terminals provided in the enclosure.

4. Ensure Parameter 29 is set to “A” for thermostat control or “b” for thermistor control of the

indirect tank.

5. Set parameters 30-35 as appropriate for your applicaon (see the Parameter Sengs Table for

more informaon).

Figure 57

Indirect Tank

Thermistor Connecon

Indirect Tank Pump

Connecon

Indirect tank pump

to be wired to boiler.

Indirect Tank Thermistor Connecon

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 58

Indirect Tank Pump

Connecon

Indirect tank pump

to be wired to boiler.

Indirect Tank Thermostat Connecon

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

The boiler has the ability to operate

simultaneously between central heang and

domesc indirect tank heang. The boiler

can control dividing the ow between

domesc hot water producon to the

indirect tank and the central heang circuit.

The boiler is set to domesc indirect tank

recovery as the priority. If it is desired to

have simultaneous operaon of central

heang and domesc hot water, access the

parameters (as shown in the “Parameter

Sengs” secon of this manual) and adjust

parameter 33 to “b.”

When Parameter 28 is set to "A”, the opon

to select the duraon of the indirect tank

priority will become available in Parameter

34. Aer this period of me passes, the

indirect tank will cease to be heated and

central heang will have priority. If there is

sll an indirect tank demand aer 60

minutes passes of CH priority, indirect tank

priority will begin again.

When Parameter 28 is set to "A”, Parameter

32 is selected to be “Use Pump,” and when

Parameter 33 is selected to be

"Simultaneous Heang with Indirect Tank

and CH" Parameter 35 becomes available.

This enables CH seng limitaon during

simultaneous heang. This can prevent

unintenonally supplying high temperature

supply water to low water heang

temperature applicaons such as oor

heang. During simultaneous operaon, the

heang supply temperature is based on the

indirect tank supply temperature. When

"NO" is selected, make sure that the CH

system and heang applicaon is designed

to allow for the high supply temperature.

IMPORTANT:

The central heang supply temperature may

be up to 180°F (82°C) or higher during

simultaneous operaon. If the central

heang temperature is lower than 140°F (60°

C), the default seng is not to permit the

simultaneous operaon. The boiler would

then default to a DHW system with Indirect

Tank priority seng. In this scenario, it

prevents unintenonally supplying high

temperature supply water to low water

heang applicaon.

If the indirect tank seng is above 140°F (60°

C) and it is desired to have simultaneous

operaon with the indirect tank setpoint

higher than the CH setpoint, access the

parameters (as shown in the “Parameter

Sengs” secon of this manual) and adjust

parameter 35 to “b.” In this scenario, there is

the potenal to have higher temperature

water being supplied to the central heang

system. Ensure that the central heang

system is designed for this high supply water

temperature.

• When set for simultaneous operaon,

the me to recover the indirect tank may

be increased. If high domesc hot water

usage is desired without greater

potenal of temperature loss, it is not

recommended to use the simultaneous

operaon feature.

• When the boiler is unable to perform

simultaneous operaon between CH and

recovering an indirect tank, the indirect

tank heang will take priority and CH

operaon will occur aer the tank

temperature is sased or indirect tank

priority me has elapsed.

NOTE

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Parameter

Number

Seng Descripon

Selecon

A b C d

Indirect Tank Supply

Temperature with Thermistor

Control

180°F

(82°C)

Seng

Temperature

+18°F

(+10°C)

Seng

Temperature

+27°F

(+15°C)

Indirect Tank Supply

Temperature with

Thermostat Control

180°F

(82°C)

160°F

(71°C)

140°F

(60°C)

Allowed Indirect Tank

Temperature Drop before

Firing (with Thermistor)

5.4°F

(3°C)

10.8°F

(6°C)

16.2°F

(9°C)

21.6°F

(12°C)

Indirect Tank Operaon

Opon

Use Pump Use 3-Way

Valve

Indirect Tank Simultaneous

Heang

Indirect Tank

Priority

Simultaneous

Heang with

Indirect Tank

and CH

Indirect Tank Priority Time 60

minutes

CH Temperature Limitaon to

Allow Simultaneous

Operaon with Indirect Tank

Yes No

NOTE

Refer to secon “12.4.1 Parameter Sengs Table” for more informaon on parameter sengs.

Table 32

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

The image below illustrates a suggested

arrangement. Some of the ngs are

oponal.

LEGEND

Zone Control

Panel

Thermostat 120V Input

Outdoor

Reset

Purge Staon

Indirect Tank

Cold

Hot

Mix

Aquastat

This is not an engineering drawing; it is intended only as a guide and

not as a replacement for professional engineering project drawings.

This drawing is not intended to describe a complete system. It is up

to the contractor or engineer to determine the necessary

components and conguraon of the parcular system to be

installed. The drawing does not imply compliance with local

building code requirements. It is the responsibility of the

contractor or engineer to ensure the installaon is in accordance

with all local building codes. Confer with local building ocials

before installaon.

Oponal Low Water

Cut-O (LWCO)

Figure 59

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• Do not use an extension cord or adapter

plug with this appliance.

• The boiler must be electrically grounded

in accordance with local codes and

ordinances or, in the absence of local

codes, in accordance with the Naonal

Electrical Code, ANSI/ NFPA No. 70.

• Boilers are equipped with a three-prong

(grounding) plug for your protecon

against shock hazard and should be

plugged directly into a properly grounded

three-prong receptacle. Do not cut or

remove the grounding terminal from this

plug.

When connecng the power supply, follow

these guidelines:

• If using the 5  (1.5 m) power cord

(supplied with boiler), plug it into a

standard three-prong 120 VAC, 60 Hz

properly grounded wall outlet.

• The boiler requires 120 VAC, 60 Hz power

from a properly grounded circuit.

• Do not rely on the gas or water piping to

ground the boiler. Ground locaons are

provided inside the boiler.

• The wiring diagram is located on the

inside of the boiler front cover.

IMPORTANT

• This boiler is supplied with 120 volts and

is equipped with a three-prong

(grounding) plug for your protecon

against shock hazard. The plug should be

plugged directly into a properly

grounded three-prong receptacle. Do

not cut or remove the grounding

terminal from this plug.

• Disconnect incoming power to the boiler

by removing the three-prong plug

before:

− Performing repairs or installaon to

internal components or accessories.

− Making wiring connecons and/or

changes to the wiring terminals on

the boiler.

• No changes may be made to the wiring

of the boiler.

• All connecons should be designed in

accordance with the applicable

regulaons.

• Label all wires prior to disconnecon

when servicing controls. Wiring errors

can cause improper and dangerous

operaon.

• Verify proper operaon aer operaon

servicing.

A manually operated remote switch should

be located outside the boiler room door for

shung down the boiler. Consideraon

should be given to protect the switch

against tampering. If there is more than one

door to the boiler room, a switch should be

located at each door.

Topics in this secon

• Guidelines

• Electrical Connecons

• Post-Power Supply Connecon Checklist

• Inial Sengs

WARNING

CAUTION

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Devices such as the room thermostat, outdoor temperature sensor, zones pumps, and relay

controls are connected to the boiler PC Board.

⓫

❿

❾

Item # Connecon Item Note

❶ 0-10V Compable Model Only

❷ Outdoor Temperature Sensor

❸ System Thermistor (Solo Only) Compable Model Only

❹ DHW Thermistor (Solo Only)

❺ Air Handler Connecon

❻ External Boiler Pump Connecon 120 VAC

❼ Power Input

❽ T/T 1 Connecon

C, R, W Thermostat

Connecons

Max 0.2 A

❾

T/T 2 Connecon

❿

T/T 3 Connecon

⓫

T/T 4 Connecon

⓬

LWCO (High Limit or Other Safety

Switch)

Included Jumper from Factory

⓭

External Pump Connecon 4 120 VAC, Max 2.0 A

⓮

External Pump Connecon 3 120 VAC, Max 2.0 A

⓯

External Pump Connecon 2 120 VAC, Max 2.0 A

⓰ External Pump Connecon 1 120 VAC, Max 2.0 A

❶

❻

❼

⓬

⓮

⓭

⓯

⓰

❺

❷

❸

❹

Table 33

Figure 60

❽

C R W

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

□

Conrm that the electricity is supplied from a 120 VAC, 60 Hz power source and is in a

properly grounded circuit.

□

Conrm that an extension cord or adapter plug has NOT been used with the boiler.

□

Conrm connecon terminals are connected correctly.

• Rinnai recommends the use of spade connectors or similar components for wiring to the

screw terminals.

• Ensure that the insulaon of the wire is not exposed to contact any other components

besides the terminal.

• If exposed wiring contacts to any other exposed wiring or metal components, an electrical

short may occur and cause damage to the PCB or other connected components.

• Use proper size of screwdriver for prevenng the screw on the terminal from breaking.

• Do not use an electric or torque screwdriver for wiring on the PC Board.

• Wiring should pass through the grommets provided at the boom of the boiler.

• Use proper diameter and size of wiring.

CAUTION

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

This boiler is set up for natural gas and PVC

indoor installaons as default. When power is

connected for the rst me, you need to

conrm the sengs below or change them

properly.

f proper sengs are

not selected before

you use the boiler, it will cause a hazardous

situaon which results in personal injury or

property damage.

Conrm/change inial sengs of the boiler by

choosing one of the two opons below:

Opon 1 (recommended): Conrm/change

sengs from a smart device using Bluetooth

Low Energy (BLE).

Opon 2: Conrm/change sengs from the

boiler controller.

To conrm/change inial sengs of the boiler

from a smart device using BLE recommended),

follow the steps below:

Note: To ulize BLE, your connecng device

(smartphone, tablet, computer, etc.) needs to

have Bluetooth 4.0 or a newer version. Contact

your connecng device manufacturer if you are

not sure. If your connecng device has

Bluetooth 4.0 or a newer version.

1. Download the Rinnai Central

app by scanning the

following QR code:

2. Supply power to the boiler for the rst

me. The controller displays “SEt” and the

Maintenance Mode icon on the controller

is blinking.

3. Open the Rinnai Central app from your

smart device and log into the Rinnai Central

app with a professional account.

4. Push the Bluetooth buon on the controller.

The Bluetooth LED light turns solid.

5. Tap “Connect to a Rinnai Boiler” on the

Rinnai Central app. You will hear a beeping

sound when pairing between the app and

boiler is established.

6. Follow the steps in the Rinnai Central app to

conrm and/or change your boiler sengs.

7. When sengs are completed, the controller

display will be normal operaon status.

Figure 64

Figure 61

Figure 63

Figure 62

SEt

Connect to a

Rinnai Boiler

SEt

Maintenance

Mode Icon

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

3(A). If using natural gas: Press the Select

buon to conrm natural gas. Then,

proceed to step 4.

If using propane gas, skip this step and

proceed to step 3(B).

1. Supply power to the boiler for the rst

me. The controller displays “SEt” and the

Maintenance Mode icon appears.

2. Press the Sengs menu buon. The

controller displays “nG” (natural gas).

3(B). If using propane gas: Press the up or

down arrow buon. The controller

displays ”LPG” (Liquid Propane Gas).

Press the Select buon to conrm Liquid

Propane Gas. Proceed to step 4.

5.(A). If you install the boiler by PVC venng:

Press the Select buon. Proceed to step 6.

If you install the boiler by PP venng:

Proceed to step 5(B).

4. The controller displays “PVC.”

Figure 69

Figure 68

Figure 67

Figure 66

Figure 65

Figure 70

LPG

PVC

SEt

Maintenance

Mode Icon

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

5(B). If you install the boiler by PP venng:

Press the up or down arrow buons.

The controller displays “PP.” Press the

select buon to conrm PP. When you

re-enter each seng, press the seng

menu buon to go back to step 1.

Proceed to step 6.

6. The controller displays “nG” or “LPG” and

“PVC” or “PP” alternavely while the

select menu buon and ON/OFF buon is

blinking. The controller shows the current

gas seng and indoor/outdoor seng.

For example, the controller displays “NG”

and “PVC” alternavely, indicang the

boiler is set for natural gas and PVC

venng installaon. If you need to change

these sengs, press the Seng menu

buon to go back to step 1. Otherwise,

press the “ON/OFF” buon.

7. The controller briey displays “888”

while a beeping sound is observed. Then,

complete inial sengs and the controller

is o.

8. If you set inial sengs incorrectly, you

can adjust the sengs by conguring the

parameter sengs. Follow the steps in

secon “12.4 Parameter Sengs” and

change parameters A0 (Gas Type) and

A2 Venng correctly.

9. Aer inial sengs are completed, press

the On/ O buon to turn on the unit.

10. If ”LPG” (Liquid Propane Gas) is selected,

apply the supplied gas conversaon label

at an open space above the exisng label

on the le side of the boiler.

Note: See the “Key Points For A Successful

Installaon” document (on boiler front

cover) for illustraon of label locaon.

11. The default altude seng for this boiler

is 0-2,000 . (0-610 m). If this boiler is

installed at a dierent altude, select the

appropriate altude seng. Also, set up

other parameters property. Refer to

secon “12.4 Parameter Seng” for

specic details on seng parameters.

Figure 74

Figure 73

Figure 72

Figure 71

888

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Failure to properly commission the boiler as

described in this secon may result in

unreliable and unsafe burner operaon and

reduced component life.

Boiler commissioning is a procedure used aer

boiler installaon to ensure the system and

boiler were installed correctly and ready for

operaon.

THIS SECTION IS INTENDED

FOR THE INSTALLER

This boiler must be commissioned by a

licensed professional. Installer qualicaons: A

trained and qualied professional must install

the appliance, inspect it, and leak test the

boiler before use. The warranty will be voided

due to any improper installaon. The trained

and qualied professional should have skills

such as: Gas sizing; Connecng gas lines, water

lines, valves, and electricity; Knowledge of

applicable naonal, state, and local codes;

Installing venng through a wall or roof; and

training in installaon of condensing boilers.

Training for Rinnai Condensing I-Series Plus

Boilers is accessible online at

rinnaipro.myabsorb.com.

1. Ensure all boiler components are installed correctly.

2. Open the air vent inside the boiler.

3. Power on the boiler.

4. Open the ll valve on the lling circuit.

5. Check the pressure on the controller and/or

pressure gauge. Fill the boiler to a minimum of

20 PSI (138 kPa) water pressure and a maximum of

30 PSI (207 kPa).

6. An E430 diagnosc code will be present unl the

boiler senses at least 13 PSI (90 kPa).

7. Check the heang system for leaks.

8. Begin the deaeraon process shown in the next

secon (“10.3 Deaeraon Process”).

• Work on the boiler must be carried out by a

licensed professional, using correctly

calibrated instruments with current test

cercaon. The commissioning instrucons

are intended for licensed professionals who

have the necessary knowledge and are

approved for working on heang and gas

systems.

• The fan will operate when power is inially

provided to perform a safety check on the

boiler.

• The boiler and its individual shut o valve

must be disconnected from the gas supply

piping system during any pressure tesng of

that system at test pressures in excess of 1/2

PSI (3.5 kPa).

• Before the boiler is red for the rst me:

− Ensure the boiler and system are fully

de-aerated

− Purge the gas line between the gas meter

and boiler

− Prime the pump (as described in this

secon)

IMPORTANT

Topics in this secon

• Safety Precauons

• Filling Process

• Deaeraon Process

Do not ll the boiler unless permanent power is

available. Freeze protecon is not available if

the boiler is not lled, air purged, and supplied

with power and gas.

WARNING

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

You Will Need:

• Philips head screwdriver

1. Remove the boiler’s front panel by removing the two screws that secure the panel.

3. Conrm whether all heat emiers and pumps are

connected to the piping system.

4. Fill the boiler to a minimum of 20 PSI (138 kPa) water

pressure and a maximum of 30 PSI (207 kPa).

5. The deaeraon process takes approximately 15 minutes for

compleon.

Aer 15 minutes, the display will show “End” (see right

image). The commissioning process is complete.

6. On the PC Board, press the top, le black buon again to

resume normal operaon mode.

7. Operate the central heang to ensure the boiler operates

properly.

8. Close the air vent located inside the boiler. Aer

approximately one week, all air in the system should be

eliminated via the air separator in the piping system.

Note: Alternately, on inial installaon, you may press and hold the

DHW buon then simultaneously press the CH buon on the control

panel instead of removing the boiler’s front panel.

2. On the PC Board, press and hold the SW2 buon shown below. The

Maintenance Mode icon (see right image) on the controller display will

appear and iniate the deaeraon process.

Maintenance

Mode icon

PC Board

Figure 77

Figure 76

Figure 75

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

DO NOT bypass the deaeraon program during commissioning or if any part of the system has

been opened or disconnected. Failure to properly deaerate the boiler and system may result in

damage to the boiler, which is not covered by the boiler warranty.

To iniate or end the deaeraon process, press and hold the SW2 buon (shown below).

Deaeraon is an eecve method of purging air from the boiler aer the system has been lled or

serviced. While the boiler is running the deaeraon process, the Maintenance Mode icon (see

image) appears on the controller display.

PC Board

Maintenance

Mode icon

Figure 78

WARNING

Do not bypass deaeraon during commissioning or if the system pressure has

dropped below 13 PSI (90 kPa). If there is any chance that air has entered the

system, deaeraon is crical to prevent damage to the boiler.

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Complete the following checklist when boiler installaon is complete. You should be able to answer

YES to each queson. If you answer NO, installaon is not complete. Refer to the applicable secon

in this manual for addional informaon.

INSTALLATION LOCATION YES NO

Have you veried the unit, vent and air intakes meet the clearance requirements?

 

VENTING YES NO

Have all corrosive compounds been removed from around the combuson air intake of the boiler?

 

Have you followed the combuson air requirements to provide sucient combuson air for the boiler?

 

Are the correct venng products for the installed model being ulized?

 

Have you installed the vent screen(s) for Schedule 40 PVC/CPVC vent applicaons if applicable?

 

Have you veried the vent system does not exceed maximum length?

 

SYSTEM PIPING YES NO

Have the water lines been purged of all debris and the lter cleaned?

 

Have you veried the hot and cold water lines to the boiler are not interchanged?

 

Does the water supply to the boiler have adequate pressure? Is it free of chemicals? Did you verify it

does not exceed total hardness that will damage the heat exchanger?

 

Have you veried that no toxic chemicals were introduced to the potable water?

 

Did you drain the boiler if not intended to be used immediately?  

Have water quality issues (if any) been addressed?

 

Have you performed the leak and pressure test for the boiler and plumbing system?

 

CONDENSATE DRAIN YES NO

If the condensate pump is installed, is it wired to deacvate the boiler in the event of failure?

 

Did you verify the condensate drain pipe is as short as possible and has a downward pitch toward the

drain or condensate pump?

 

Is all condensate drained and disposed of as per local codes?

 

Did you use ONLY corrosion resistant materials for the condensate drain lines?

 

Did you verify the condensate drain pipe along its enre length is at least the same diameter as the drain

line?

 

Did you check to ensure the condensaon drain lines are protected from freezing?

 

Have you veried the condensate drain line is not plumbed with the pressure relief valve?

 

Have you conrmed the condensate drain line is not connected with an air condioning evaporator coil

drain?

 

This boiler has an integrated condensate trap. Have you veried that an external condensate trap is not

installed?

 

Have you conrmed the end of the condensate drain pipe is open to atmosphere?

 

Has an air gap been installed in the condensate drain line?

 

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

PRESSURE RELIEF VALVE (PRV)

YES NO

Does the PRV comply with the standard for Relief Valves and Automac Gas Shuto Devices for Hot

Water Supply Systems ANSI Z21.22, and/or the standard Temperature, Pressure, Temperature and

Pressure Relief Valves and Vacuum Relief Valves, CAN1-4.4?

 

Is the discharge from the PRV piped to the ground or into a drain system as per local codes?  

Is the discharge line from the PRV pitched downward and does it terminate 6 in. (152 mm) above the

drains?

 

Is the discharge end of the line plain (unthreaded) and a minimum of 3/4 in. diameter?  

Is the discharge line material suitable for at least 180°F/(82°C) water?  

Did you take measures to protect the PRV and PRV discharge line from freezing?

 

Have you veried the PRV is not plumbed with the condensate drain line?  

Have you veried the PRV is not plugged and that reducing ngs, valves, or other restricons are not

installed in the relief line?

 

GAS SUPPLY YES NO

Did you verify the gas system is appropriately sized?  

Did you verify the boiler is rated for the gas type supplied?

 

Have you performed a gas line and connecon leak test?

 

Did you install a manual gas control valve in the gas line to the boiler?

 

Is the inlet gas pressure within limits?

 

Did you purge the gas line of any debris before connecng the boiler?

 

POWER SUPPLY

YES NO

Did you conrm that the electricity is supplied from 120 VAC, 60 Hz power source and is in a properly

 

Did you conrm that an extension cord or an adapter plug has NOT been used with the boiler?

 

COMMISSIONING

YES NO

Did you prime the pump?

 

Was the boiler lled to 17-26 PSI?

 

Was the deaeraon process performed on the boiler?  

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

IMPORTANT

• On inial startup of the system, it is necessary to put the boiler into a deaeraon process to

remove all air from the system piping and boiler. Failure to properly deaerate the boiler

and system may result in damage to the boiler, which is not covered by the boiler warranty.

• It can take up to a week before all the air has disappeared from a newly-lled and

pressurized installaon. During the rst week of operaon, noises can be heard which

indicate the presence of air. The automac air vent in the boiler and air separator in the

heang system will remove the air, which means the water pressure will reduce some

during this period; therefore, addional water is necessary to maintain proper pressure in

the heang system. Water pressure needed for operaon:

− The boiler is in normal operaon between 17 - 26 PSI.

− Below 7.3 PSI, the boiler will have an error code (E430 diagnosc code will be present

on the controller display) and will not operate. Increasing the heang system water

pressure is necessary for operaon.

− Between 7.3 - 13 PSI, operaon will be limited (E430 diagnosc code will be present

on the controller display).

− The maximum pressure permied inside the heat exchanger is 45 PSI.

− The pressure relief valve supplied with the boiler is rated to 30 PSI.

Topics in this secon

• Start-Up Informaon

• Control Panel

• Basic Operaon Sengs

• Parameter Sengs

• Outdoor Reset Control

• Air Handler Control

• Bluetooth Low Energy (BLE) and App

Instrucons

• Diagnosc Codes

• Forced Hi/Low Fire Modes

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

❶

❷

❸

❹

❺

❻

❼

❽

❾

Figure 79

Bluetooth

Connects for BLE

setup.

Up/Down Arrows

Scrolls through

available menu

opons including

adjusng the

temperature.

Sengs Menu

Selects Further Menus

to adjust sengs.

Central Heang (CH)

From the factory, this opon

is turned o by default. The

boiler runs o thermostat

inputs on the control board.

For any adjustments, contact

a trained and qualied

professional for seng

assistance. Adjustments

must be made by a trained

and qualied professional

for this mode to operate

correctly.

Domesc Hot

Water On

Press to run the boiler

in Domesc Hot

Water Indirect Tank

mode.

Select Buon

Press to select the opon in

the display window.

❶

❷

❸

❹

❼

Display Window

Displays boiler status

informaon.

See secon “12.2.2 Display

Window” for more

informaon.

❽

❺

❾

Boost Buon

Engages the Boost

Funcon on the boiler.

Switching Operaon Mode

Press to change the display

between DHW and CH for

temperature seng.

❻

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

When the boiler is turned on, the main screen (also called the home screen) appears in the display.

Central Heang Mode Acve

Priority Icon

This icon will be present on the

controller that has priority.

Outdoor Temperature Sensor

Connected

❶

❷

❸

❹

❺

❻

Freeze Protecon Acve

Maintenance Mode Icon

Appears when the boiler is in

Parameter Sengs Mode, Deaeraon

Mode, Performance Data Mode, Error

History Mode, etc.

Domesc Hot Water Indirect Tank

Mode Acve

Unit of Measurement for Pressure

Note: Pressure and temperature are

alternately displayed on the controller.

Setpoint Temperature, Current

Temperature or Current Pressure, and

Diagnosc Informaon

Note: Pressure and temperature are

alternately displayed on the controller.

❼

❽

❾

❿

Unit of Measurement for Temperature

⓫

“In Use” Light (boiler has red and is

running)

Eco Mode Acve

❽

❾

❿

⓫

Figure 80

❶

❷

❸ ❼

❺

❻ ❹

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

IMPORTANT

• When outdoor reset control acvates, the target supply temperature for the CH system will not follow

the target temperature set on the controller.

• When the boiler is in operaon, pressure and temperature are alternately displayed on the controller.

Press the Switch

Operaon Mode buon

unl the Central Heang

Acve buon appears on

the home screen.

Adjust the temperature

with the Up or Down

arrows unl the

appropriate

temperature is

displayed.

Press the Select buon to

conrm the temperature.

This temperature seng

is displayed for a few

seconds and then returns

to standby mode.

The Central Heang (CH) setpoint temperature is not adjustable in outdoor reset control unless the

custom heang curve (Curve 4) is selected.

If Parameter 01 is set to “d” (Curve 4), follow the steps below to change the CH target temperature.

For more informaon, see secon “12.4.1 Parameter Sengs Table” > Parameter 01 > Selecon

“H” (Curve 7).

Selecon

Parameter Seng Descripon A b C d E F H

0 1

Outdoor Reset Curve

Select the proper curve from below. See secon

“12.5.4 Outdoor Reset Curves” for more informaon.

Curve 1: Standard baseboard, high-eciency air

handler, panel radiators

Curve 2: Staple up radiant.

Curve 3: High temperature air handler or undersized

baseboard.

Curve 4: Cast Iron Baseboard

Curve 5: Radiators

Curve 6: High Mass Radiant

Curve 7: Custom curve based on customer input

Curve

Table 34

Figure 81

Figure 82

Figure 83

PSI

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

When the indirect tank is connected to the boiler PC board, the indirect tank setpoint temperature

can be adjusted via the controller (this is applicable only when using the indirect tank thermistor).

To adjust the indirect tank DHW setpoint temperature, follow the steps below.

If the backlit LED of the DHW buon is not

illuminated, press the DHW buon.

If the backlit LED of the DHW buon is

illuminated, proceed to Step 2.

Adjust the temperature with the

Up and Down arrows unl the

appropriate temperature is

displayed.

Temperature 120°F (50°C) 130°F (55°C) 140°F (60°C) 150°F (65°C)

Press the Switch Operaon Mode

buon unl the DHW Acve icon

appears on the home screen.

Press the Select buon to conrm the

temperature.

This temperature seng is displayed for a few

seconds and then returns to standby mode.

Indirect Tank Temperature Sengs

Figure 84

PSI

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Central Heang Mode is a gas-saving funcon available on the I-Series Heat-Only (Solo) Boilers.

• Eco Mode (Default) (Eco icon illuminates)

If it is desired to reduce the amount of gas used in CH operaon, Eco mode will turn the space

heang o when the return water temperature is close to the target setpoint temperature for

ve minutes every 15 or 30 minutes depending on the seng of Parameter 48.

• Comfort Mode (Eco icon does not illuminate)

The boiler will operate via a call for heat from the thermostat or the heang need for the CH

buon dependent on the selecon made on DIP Switch 2. This mode will use more gas but will

provide a more consistent home heang temperature.

By default, Eco mode is enabled (turned on). To enable (turn on) comfort mode, press the Eco

buon on the controller.

Eco Mode (Default) Comfort Mode

The Eco icon will

not illuminate

when Comfort

Mode is acve.

No Icon

Figure 85

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

To change the units of measurement appearing on the boiler display, follow the steps below.

To turn the control panel click sound on or o, follow the steps below.

Press the Up or Down arrows

to select a unit.

• F = U.S. Measurement

(°F/PSI)

• C = Metric (°C/bar)

Press the Sengs buon.

Press the Select buon.

Figure 86

Figure 87

Figure 88

1 4 0

1 : F 1 : F

Press the Select buon.

Press the Mode buon twice.

2:on should appear on the

display. Press the Up or Down

arrows to select ON or OFF.

Figure 89

Figure 90

2:On

2:OFF

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

To turn the child lock funcon on or o, follow the steps below.

1. 2.

• When Child Lock mode is enabled, the only funcon available is to turn o Central

Heang (by pressing the Central Heang buon on the controller); this occurs only if

Parameter 71 is set to “b”. See secon “12.4 Parameter Sengs” for more informaon.

• If using mulple controllers, Child Lock can be set only on the controller that has priority.

• If a buon is pressed when the Child Lock funcon is engaged, “LOC” will be displayed on

the controller.

IMPORTANT

Press the Select buon.

Press the Mode buon three

mes. 3:off should appear on

the display. Press the Up or Down

arrows to select:

• OFF - Child Lock OFF

• LOC - Child Lock ON

Figure 91

Figure 92

Figure 93

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

To view the boiler’s performance data, follow the steps below.

1. 2.

While connuing to hold the

(Down) buon, press and hold

the Domesc Hot Water buon

(press and hold both buons

down at the same me).

Press and hold the

(Down) buon for

two seconds.

Use the (Up) and

(Down) buons to

scroll to the desired

performance data

number described in

the Performance Data

Table in this secon.

To exit performance data:

While connuing to hold the

(Down) buon, press and hold the

Domesc Hot Water buon

(press and hold both buons

down at the same me).

The data for the

performance number

automacally appears

in the display.

Figure 94

Figure 95

Figure 96

Figure 97

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

* Refer to the Technical Data Sheet located on the inside front cover of the boiler for addional

informaon.

# DATA UNIT

Water Pressure PSI/bar

Supply Temperature °F/°C

Return Temperature °F/°C

Freeze Protecon Temperature °F/°C

Exhaust Temperature °F/°C

Fan Frequency Hz

Venturi Posion 0=Closed, 1=Open

Venturi Cycles x100

Pump Cycles x100

Pump Hours x10 Hours

Pump for Boiler 0=OFF, 1=ON

Pump for System (Pumps 1-3) 0=OFF, 1=ON

Pump for System (Pump 4) 0=OFF, 1=ON

Indirect Tank Thermistor Temperature °F/°C

Outdoor Temperature °F/°C

Energizaon Hours x100 Hours

Combuson Hours x10 Hours

Combuson Cycles x100

Commissioning Cycles x1

Performance Data Table

Unit of measurement (°F/°C, PSI/bar, and GPM/LPM) will vary depending on unit of measure

selecon.

IMPORTANT

Table 35

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Item #

PC Board Switch

Primary Funcon Notes

1 Buon 1

Parameter Seng

Mode

Refer to secon “12.4 Parameter Sengs.”

2 Buon 2 Deaeraon Mode

Refer to secon “10. Commissioning”

3 Buon 3

Data Transfer

Mode/Test

Combuson

Mode/Flushing

Mode

This is for transferring PCB data when replacing the

PCB. Refer to the instrucons included in the

replacement parts. Also, this is used for seng the

boiler into forced combuson mode and ushing

mode.

❶

❷

❸

Table 36

Figure 98

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

To change the altude, follow the steps below.

1. Remove the boiler’s front panel by removing the two screws that secure the panel.

2. Locate the PC Board (lower le side of unit) (see below).

3. Locate the PC Board buons on the PC Board (see below).

4. Press the SW1 le buon on the PC Board (see below).

5. Scroll to Parameter A3. Adjust Parameter A3 based on the altude sengs in the table below.

When a PC Board buon is adjusted, it is not necessary to adjust the gas pressure seng for high

altude.

IMPORTANT

Parameter

Number

Seng

Parameter

Title

A B C D

Altude 0-2,000 

2,001-5,400 

(610-1,646 m)

5,401-7,700 

(1,646-2347 m)

7,701-10,200 

(2,347-3,109 m)

Figure 99

Table 37

SW1 le Buon

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

1 Remove the boiler’s front panel by removing the two screws that secure the panel.

2 Locate the PC Board (lower le side of unit).

3 Locate the le PC Board buon.

4 Press and hold the buon for ve seconds.

6. Press the (Up) or (Down) arrows

to select a parameter seng number.

Then, press the Select buon.

8. To exit parameter sengs and enter normal operaon mode, press the PC Board buon.

7. Press the (Up) or (Down) arrows to

change the selecon for the seng number

(such as 11-A or 11-b ).

Then, press the Select buon.

Figure 100

Figure 101

Figure 102

Figure 103

5. 00-A appears on the display.

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Selecon

Parameter

Number

Funcon/Descripon

(Default)

b C d E F H

Outdoor Temperature Sensor

Enables or disables the outdoor

temperature sensor.

In Use Not In Use

Outdoor Reset Curve

(*) This parameter shows up only when

selecng Outdoor Temperature Sensor

“In Use” as selecng parameter number

00. For selecng outdoor reset curve,

see below:

Curve 1: Standard baseboard, high-

eciency air handler, panel radiators

Curve 2: Staple up radiant.

Curve 3: High temperature air handler

or undersized baseboard.

Curve 4: Cast Iron Baseboard

Curve 5: Radiators

Curve 6: High Mass Radiant

Curve 7: Custom curve based on

Boost

This parameter is available when

parameter number 00 is selected as

“A.” Boost Mode increases the CH set

temperature above the outdoor reset

curve target when the boiler has been

running on an unusually long call for

heat.

Minutes

Maximum Outdoor Temperature

This parameter is available when

parameter number 00 is selected as

“A.” This sets the maximum outdoor

temperature the boiler will re in CH

mode. This can prevent the boiler from

ring in warm outdoor temperatures.

77°F

(25°C)

Maximum

Service Soon

SS is a me based service indicator set

during installaon.

Disabled 0.5 Year 1 Year 2 Years

Pressure Indicaon on Controller Panel

The current pressure will cycle on the

controller display. If an external

pressure gauge is present, it is

permissible to change the seng to

"No."

Yes No

De-Rate

This parameter is to limit maximum

input when it is necessary.

Seng

Indirect Tank

Enables the Indirect Tank Funcon for

Pump 4.

On O

Table 38

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Selecon

Parameter

Number

Funcon/Descripon

(Default)

b C d

Indirect Tank Thermistor/Thermostat

Selecon

Selects the method of controlling the

indirect tank.

Thermostat Thermistor

This parameter is available when parameter

number

28 is selected as “A” and

parameter number 29 is selected as “b.”

Selects the supply temperature for the

indirect tank when using a thermostat. 180°F

(Default) is the maximum supply

temperature. The higher the supply

temperature to the tank, the quicker the

tank will heat up. If this temperature is too

high, select other sengs as appropriate.

Ensure the indirect tank supply temperature

is 18°F (10°C) higher than the set point

temperature of the tank thermostat.

180°F

(82°C)

Tank Seng

Temperature

+18°F (10°C)

Tank Seng

Temperature

+27°F (15°C)

Allowed indirect tank temperature drop

before ring (with thermistor)

This parameter is available when parameter

number 28 is selected as “A” and parameter

number 29 is selected as “b.” This selects

the dierenal temperature between the

indirect tank setpoint temperature and

thermistor reading. The smaller the value,

the more frequently the indirect tank will

call for heat.

5.4°F

(3°C)

10.8°F

(6°C)

16.2°F

(9°C)

21.6°F

(12°C)

Indirect Tank Operaon Opon

This parameter is available when parameter

number 28 is selected as “A.” When a 3-Way

Valve and the boiler pump are to be used for

recovering the indirect tank, select “b”. Only

120 VAC 3-Way Valves may be used in this

applicaon.

Use

Pump

Use

3-Way Valve

Indirect Tank Simultaneous Heang-Up

This parameter is available when parameter

number 28 is selected as “A” and parameter

number 32 is selected as “A.” This selects the

operaon of the indirect tank heang by

priority or simultaneously with CH. When

"Indirect Tank Priority" is selected, other

pumps except for the indirect tank pump will

not operate while the tank is being heated.

When "Simultaneous Heang with Indirect

Tank and CH", all pumps may operate

simultaneously. When in Simultaneous

mode, if the tank does not achieve the

Indirect Tank Setpoint Temperature within

60 minutes, it will transion to Indirect Tank

Priority.

Indirect

Tank

Priority

Simultaneous

Heang with

Indirect Tank and

Table 38 (Connued)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Selecon

Parameter

Number

Funcon/Descripon

(Default)

b C d

Indirect Tank Priority Time

This parameter is available when parameter

number 28 is selected as “A.” This selects

the me that the indirect tank will maintain

priority. Aer this period of me passes, the

indirect tank will cease to be heated and

central heang will have priority. If there is

sll an indirect tank demand aer 60

minutes passes of CH priority, indirect tank

Minutes

CH Temperature Limitaon to Allow

Simultaneous Operaon with Indirect Tank

This parameter is available when parameter

number

28 is selected as “A,” parameter

number

32 is selected as “A” and parameter

number

33 is selected as “b.”

This enables CH seng limitaon during

simultaneous heang. This can prevent

unintenonally supplying high temperature

supply water to low water heang

temperature applicaons such as oor

heang. During simultaneous operaon, the

heang supply temperature is based on the

indirect tank supply temperature. When

"NO" is selected, make sure that the CH

system and heang applicaon is designed

to allow for the high supply temperature.

Yes No

Linked Operaon Among Each CH Pumps

This parameter enables linked operaon

among each CH pumps. For example, when

parameter b is selected and T/T 1 is acve,

both pump 1 and 2 are ON. The T/T wire

must be connected to the T/T1 connecon.

This seng is primarily for an applicaon

that requires two pumps or more for one

zone, such as in use with an injecon loop or

similar system.

Linked Together

CH pump 1 and

pump 2

Linked

Together CH

pump 1,

pump 2 and

pump 3

Linked

Together

pump 1,

pump 2,

pump 3

and

pump 4

Table 38 (Connued)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Selecon

Parameter

Number

Funcon/Descripon

(Default)

b C

Linked Operaon Between Main

Boiler Pump and CH Pump 1

This enables the linked operaon

between the main boiler pump and

CH pump 1. For example, when the

main pump is on, pump 1 is also on.

Yes

(Linked

together)

Main Pump Runs When the Target

Temperature is Reached

This selects the mode of the main

pump running when the target

setpoint is achieved. This seng is

for whether running on intervals to

reduce pump operaon or

connuously running to reduce wait

me to re-re. Intervals are 10

minutes ON and 30 minutes OFF.

Connuously Intervals

External Pump Runs When the

Temperature is Reached

For selecng the mode of external

pump running when the temperature

is reached to seng. This is seng

for whether stopping external pump

running to reduce pump operaon

ming or operang as same as main

pump operaon to enable to deliver

remained heat in heat exchanger

Same as

main Pump

Does Not

Run

External Pump Running at Freeze

Protecon Operaon

For selecng the mode of external

pump running when the freeze

protecon operaon. This is seng

for whether stopping external pump

running to reduce pump operaon

ming or operang as same as main

pump operaon to enable to deliver

remained heat to the system for

keeping the system piping from

freezing. But it could reduce the

temperature of inside of heat

exchanger.

Does

Not Run

Same as

Main Pump

Table 38 (Connued)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Selecon

Parameter

Number

Funcon/Descripon

(Default)

b C d

Freeze Protecon Level

This selects the freeze protecon level.

Selecng “b” will prevent the boiler from

operang in freeze protecon mode more

than believed necessary.

Normal

For warm room

temp

The Dierenal Temperature From

Exnguishing Fire to Fire Again

How much temperature drop is permied

by the supply water thermistor before the

boiler will re again.

When selecng “Quick”, the boiler will re

more frequently and achieve more

temperature control

Normal Quick

CH Seng Temperature

Temperature

Drop

Temperature

Drop

168°F -182°F (75-82°C) 27°F (15°C) 15°F (8°C)

104°F -166°F (40-74°C) 15°F (8°C) 9°F (5°C)

The Time Which Not Allow to Fire Again

for CH

For selecng me which not allow to re

again for CH aer shutdown burner. This is

seng for whether prevenng from

frequently operang unit or allowing

frequent operaon for quick heang up

again.

Normal

(3 Minutes)

Quick

(10 Seconds)

Heang Eco Mode On Time

This seng changes the on me of the

heang Eco mode. This mode enables

greater energy savings by reducing the

length of me the boiler is operang. The

output temperature of the boiler is slower

in this mode.

Minutes

Air Handler Connecon

The seng changes to enable to AH output

with linking pump 3.

Yes No

Air Handler Post Pump Extension Seng

Extending the post Pump ming of pump 3.

15 Seconds 40 Seconds

N/A

Manufacture Use Only

For Manufacturer Use Only

Table 38 (Connued)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Selecon

Parameter

Number

Funcon/Descripon

(Default)

b C d E F

Thermostat Usage

Changes the mode between

Thermostat Usage and Central

Heang Buon

Thermostat

Used

Central

Heang ON

buon used.

Boiler res

based on

return water

temperature

Gas Type

For selecng gas type when

conducng gas conversion

Natural

Gas

Liquid

Propane

Model

Manufacture Use Only

For Manufacture use Only

Vent Material Used

This selects the venng

material used. The boiler is set

from the factory to be

installed in a PVC venng

system. If CPVC, PP, or other

approved venng is used, this

may be adjusted. See the

secon on PVC Safety Switch

for more informaon.

PVC

Material

other than

PVC:

• CPVC

• PP

• Other

Altude Seng

Sets the elevaon of the boiler

installaon.

Level 0

0-2,000 

(0-610m)

Level 1

2,001-5,400

(610-1646m)

Level 2

5,401-7,700 

(1,646-2,347m)

Level 3

7,701-10,200 

(2,347-3,109 m)

Table 38 (Connued)

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

This boiler includes a service indicator (Service

Soon, SS). When selected in the parameter

sengs, an SS code will display on the controller

indicang that it is me to ush and service the

boiler.

• Selecon is installers preference based on water

condions or other factors that may inuence

the suggested interval of service.

• See the “Parameter Sengs” secon of this

manual for selectable service intervals.

• If Service Soon (SS) appears on the controller

display, contact your local service provider to

ush and service the boiler.

• Service Soon will appear again based on the

selected service interval.

Service Soon (SS) will display

on the controller again when

the boiler reaches the

interval selected in the

parameter sengs.

To reset Service Soon (SS)

Press the Central Heating (CH)

button 5 times

5 times

Figure 104

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

North Facing Wall

Outdoor Temperature

Sensor

Outdoor reset is a built-in funcon to help maximize the eciency of the boiler. The design of this

funcon is to adjust the target temperature of the boiler relave to the outdoor ambient

temperature via the seven outdoor reset curve opons included in the boiler parameters. The

outdoor ambient temperature is observed via the provided outdoor temperature sensor.

The outdoor temperature sensor should be mounted on a North facing wall of the house below an

eave to avoid direct sunlight (to prevent obtaining a false reading of the outdoor temperature). The

sensor should also be mounted away from any vent, duct, or other device that may create an

arcial heat source. The sensor should then be wired back to the outdoor temperature sensor

terminal on the boiler. Refer to the following secons for more informaon.

Figure 105

100

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Outdoor

Temperature Sensor

Figure 106

Type of Heat Emier Typical Minimum Supply Temperature Typical Maximum Supply Temperature

Hydronic Air Handler 120°F - 140°F (49°C - 60°C) 140 °F - 180°F (60°C - 82°C)

Unit Heater 130°F - 140°F (55°C - 60°C) 160°F - 180°F (71°C - 82°C)

Base Board Convectors 100°F - 140°F (38°C - 60°C) 140°F - 180°F (60°C - 82°C)

Cast Iron/Panel Radiator 90°F - 120°F (32°C - 49°C) 140°F - 180°F (60°C - 82°C)

Undermount Radiant 100°F -120°F (38°C - 49°C) 120°F - 150°F (49°C - 66°C)

Below are some typical target temperatures for various heat emiers. These are basic guidelines; thus,

check with the emier manufacturer or consult your heang design engineer.

Note: If temperatures lower than 104°F/40°C are necessary, a mixing valve may be needed in the system.

1. Remove the boiler’s front panel by removing the two screws that secure the panel.

2. Locate the PC Board (lower le side of unit).

3. Connect the outdoor sensor to the terminals shown below using minimum 18 AWG wiring to the

two terminals provided in the enclosure.

4. Ensure Parameter 00 is set to “A” (Default). This ensures the boiler will operate based on the

outdoor temperature.

5. Set parameters 01—03 as appropriate for your applicaon (see secon “12.4.1 Parameter

Sengs Table” for more informaon).

IMPORTANT

If Parameter 00 is set to “A” (default) , and the wire harness to the outdoor sensor is

disconnected, then error code E393 will display. While the E393 error is displayed, the boiler will

operate at the CH setpoint temperature.

Table 39

101

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Curve

Number

Maximum Supply

Temperature at

14°F (-10°C) Outdoor

Temperature

Minimum Supply

Temperature at

68°F (20°C) Outdoor

Temperature

Heat Emier

(Default)

180°F (82°C) 122°F (50°C)

Standard baseboard,

high-eciency air

handler, panel radiators

2 140°F (60°C) 104°F (40°C) Staple up radiant

3 180°F (82°C) 140°F (60°C)

High temperature air

handler or undersized

baseboard

4 Cast Iron Baseboard 170°F (77°C) 104°F (40°C)

5 Radiators 170°F (77°C) 120°F (49°C)

6 High Mass Radiant 120°F (49°C) 86°F (30°C)

Seng temperature on

the controller

Seng temperature on the

controller - 36°F (20°C)

Custom curve based on

customer input

The boiler has seven outdoor reset heang curves, which are dierent target temperature lines

dependent on the outdoor temperature. The selected curve should be based o of the type of heat

emier and the target temperature desired. The heang curves are described below.

Table 40

102

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 107

80°F (27°C)

100°F (38°C)

110°F (43°C)

120°F (49°C)

140°F (60°C)

150°F (66°C)

170°F (77°C)

180°F (82°C)

90°F (32°C)

Supply Water Temperature

Outdoor Temperature

120°F

(49°C)

104°F

(40°C)

86°F

(30°C)

122°F

(50°C)

140°F

(60°C)

130°F (54°C)

160°F (71°C)

190°F (88°C)

-20°F -10°F 0°F 10°F 20°F 30°F 40°F 50°F 60°F 70°F

(-29°C) (-23°C) (-18°C) (-12°C) (-7°C) (-1°C) (4°C) (10°C) (16°C) (21°C)

180°F (82°C)

170°F (77°C)

140°F (60°C)

120°F (49°C)

14°F

(-10°C)

68°F

(20°C)

103

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Curve 7 is a custom curve based on the target setpoint temperature of the boiler the customer

selects. The maximum temperature is the target temperature. The minimum temperature is 36°F

(20°C) lower than the target temperature with a minimum of 86°F (30°C). See example curves

below.

Curve 7

To select the desired reset curve, access the parameters (as shown in secon “12.4 Parameter

Sengs”) and select parameter 01. Then, select the desired curve.

Parameter

Number

Seng Descripon

Selecon

A C F H E

Outdoor reset curve 1 2 3 6 7 4 5

Select Reset Curve

Table 41

Figure 108

-20°F -10°F 0°F 10°F 20°F 30°F 40°F 50°F 60°F 70°F

(-29°C) (-23°F) (-18°C) (-12°C) (-7°C) (-1°C) (4°C) (10°C) (16°C) (21°C)

Supply Water Temperature

Outdoor Temperature

94°F

(34°C)

114°F

(46°C)

134°F

(57°C)

110°F

(43°C)

130°F

(54°C)

150°F

(66°C)

170°F

(77°C)

190°F (88°C)

180°F (82°C)

170°F (77°C)

160°F (71°C)

150°F (66°C)

140°F (60°C)

130°F (54°C)

120°F (49°C)

110°F (43°C)

14°F

(-10°C)

86°F

(30°C)

86°F (30°C) Minimum

Temperature

68°F

(20°C)

104

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Boost mode allows the boiler to override the target temperature determined by the outdoor reset

control, and will boost the boiler target temperature to the seng of Parameter 01 aer a

connuous run me or an interval as selected in Parameter 02. The boost funcon is acve unl

the call for heat is sased or the boiler cycles o.

For example: In the case of selecng curve 1 on parameter number 01 and 30 minutes on

parameter number 02, outdoor temperature is 51°F/11°C, and supply temperature is 140°F/60°C.

When the boiler connues operang with ring for 30 minutes, the target supply temperature will

rise toward 180°F/82°C. This control connues unl shut down.

100

120

140

160

180

200

0 10 20 30 40 50 60 70 80

140°F

(60°C)

0°F

(-18°C)

20°F

(-7°C)

40°F

(4°C)

80°F

(27°C)

Supply Temperature

Example

180°F

(82°C)

51°F

(11°C)

Curve 1

The maximum outdoor temperature parameter seng (warm weather shutdown) enables the

boiler CH operaon to shut down when the outdoor temperature is higher than 77°F (25°C). This

mode can prevent the boiler from operang under warm condions unexpectedly.

Maximum outdoor temperature is selected by seng parameter number 03 to “77°F (25°C)” or

“No Maximum” (see secon “12.4 Parameter Sengs” for more informaon).

200°F (93°C)

180°F (82°C)

160°F (71°C)

140°F (60°C)

120°F (49°C)

100°F (38°C)

Outdoor Temperature

Boost Mode can be

achieved by pressing

the Boost Buon on

the controller.

Figure 110

Figure 109

105

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Domesc Priority/Maintenance Indicaon Sengs

Switch Conguraon Required Leads/Wires Funcon Funcon

Air Handler Operaon White/Black

In series with

thermostat “W” wire

Normally Closed

or Normally

Open

The OPU can be set up to operate with the boiler on Zone 3 thermostat connecons.

The post pump mer can be selected in parameter 51 (see table below).

Parameter Descripon Seng A (Default) Seng b

51 Air Handler Post Pump Operaon 15 Seconds 40 Seconds

Normally Open Terminal

Common Terminal

Normally Closed Terminal

OPU Terminal Connecons

Figure 111

Table 43

Table 42

The I-Series Plus Condensing Boiler has the capability to send an output signal to an Air Handler.

The zone pump for the air handler must be connected to Pump 3 and the thermostat must be

connected to T/T 3.

When selecng parameter 50 as "b" ON, the output signal for air handler operaon is available.

T/T 3 Connecon

C R W

External Pump

Connecon 3

106

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Instrucons on this page are correct at the me of publishing; however, these instrucons may be

updated without noce. To make sure you have the most current instrucons, please visit

rinnai.us/wi (for United States installaons) or rinnai.ca/wi (for Canadian installaons).

To download the Rinnai Central app:

1. Scan the QR code shown to the right.

2. Download the Rinnai Central app from the app store.

To congure your boiler using the Rinnai Central app:

Note: To use the Rinnai Central app BLE feature with your boiler, your connecng

device (smartphone, tablet, computer, etc) must support Bluetooth 4.0 or newer.

Contact your connecng device manufacturer if you are not sure if your device

supports Bluetooth 4.0 or newer.

1. Press and release the Bluetooth buon on the controller. The Bluetooth LED

on the controller turns solid blue.

2. Log into the Rinnai Central app with a professional account and choose “Connect to a

Rinnai Boiler.”

3. The boiler will beep once when pairing is successful. If the pairing mode on the boiler

expires without having successfully paired, the boiler will beep twice.

4. Follow the Rinnai Central app through seng up your boiler.

To connect a Rinnai BLE push buon to your boiler:

1. Press and hold the Bluetooth buon on the controller unl the Bluetooth LED on the

controller starts blinking.

2. Press and hold the Rinnai BLE push buon unl the green light ashes. The boiler will beep

once when pairing is successful. If the pairing mode on the boiler expires without having

successfully paired, the boiler will beep twice. Pressing the Rinnai BLE push buon starts

recirculaon of your boiler.

Figure 113

Figure 112

Connect to a

107

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Display Diagnosc Codes

To display diagnosc codes, follow the steps below.

1. Press and hold the Domesc Hot Water buon for

two seconds, and then the (Up) buon (hold

both buons at the same me).

2. The last nine maintenance codes display and ash

one aer the other.

3. To exit diagnosc codes and return the boiler to

normal operaon, press and hold the Domesc Hot

Water buon for two seconds, and then the

(Up) buon (hold both buons at the same me).

Some of the checks

below should be

performed by a licensed professional.

Consumers should never aempt any acon

that they are not qualied to perform.

Reset Diagnosc Codes

To reset diagnosc codes, either the Central Heang or

Domesc Hot Water buon on the control panel will

be blinking. Press the buon to reset the code.

Diagnosc Codes

IMPORTANT

• Diagnosc codes that occur during DHW operaon

may be able to reset by turning o the faucet.

• Some diagnosc codes may not reset by pressing

the CH or DHW buons. If this is the case, contact

your service provider for troubleshoong

assistance.

100

Air Supply or Exhaust Blockage/

Condensate Trap is Full

• Fan current inial check error.

• Ensure condensate line and trap is not

blocked.

• Ensure internal air lter is clean with no

obstrucons.

• Ensure high altude seng is set

properly (See High Altude Seng).

• Ensure combuson air and exhaust

vents are not blocked and the approved

venng materials are being used.

• Ensure either the exhaust ring or intake

cap is removed properly.

• Ensure vent length is within limits.

• Check fan for debris and ensure wheel

turns freely.

• Verify fan check valve is not stuck

between fan casing and burner body.

110

No Ignion (Unit Not Turning On)

• Ignion Error.

• Check that the gas is turned on at the

boiler, gas meter, and/or propane

cylinder.

• If the unit is installed in a propane

system, ensure that gas is in the tank.

• Bleed all air from the gas lines.

• Check the ground wire for the PC Board.

• Ensure the ame rod wire is connected.

• Ensure the igniter is operaonal.*

• Ensure the venng is installed in

accordance to this manual.

• Check that the surface of the electrode

and ame rod are clean.

• Check gas solenoid valves for open or

short circuits.*

• Verify gas orice installed is correct for

the gas system the unit is installed in.

• Check ame rod voltage to ground

during ignion.

Table 44

Figure 114

* See

“Electrical

Diagnoscs” on

Technical Data

Sheet located

on inside front

cover of boiler.

Figure 115

WARNING

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

108

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

120

Flame Failure

• Boiler has ame failure.

• Check that the gas is turned on at the

boiler, gas meter, and/or propane

cylinder.

• If the unit is installed in a propane

system, ensure that gas is in the tank.

• Ensure the venng is installed in

accordance to this manual.

• Ensure the ame rod wire is connected.

• Ensure the gas type and inlet gas

pressure are correct.

• Bleed all air from the gas lines.

• Check the ground wire to the PC Board.

• Check ame rod voltage to ground

during ignion.

140

Heat Exchanger Overheat

• Overheat switch is tripped.

• Measure the resistance of the Overheat

Switch.*

• Check the heat exchanger surface for

hot spots which may indicate blockage

due to scale buildup.

• Ensure the boiler pump is not locked up.

• Ensure that all of the valves in the CH

circuit are open.

• Ensure the boiler and CH circuit does not

have a freezing condion.

• The surface of the heat exchanger may

turn to a black color as stainless steel is

tempered even in normal condions.

This does not indicate an abnormal

condion.

• Check for damage on the exhaust, seal,

and venng.

150

Venturi Control

• Venturi operaon error.

• Ensure the venturi motor is operang

correctly.*

• Replace the gas valve assembly.

161

High Outgoing Temperature

• Safety shutdown because DHW outgoing

temperature is too hot.

• Check sensor wiring for damage of

outgoing thermistor.

• Measure resistance of outgoing

thermistor.*

• Ensure the gas valve has no damage and

the orice is installed correctly.

• Replace the gas valve assembly.

170

Venturi Blockage

• Check the venturi and silencer for blockage.

• Before reseng this error, check if the

condensate drain is block and if the venng

is connected properly.

180

Gas Valve Adjustment Limit

• Ensure gas type is correct.

• Ensure the ground from PCB is correct.

• Ensure gas type parameter is correct.

• Please call Rinnai Technical Support.

190

Electrical Grounding

• Secondary circuit ground fault.

• Check all electrical components for electrical

short.

210

Data Transfer Error

If the PCB has been replaced, ensure the data

transfer process is complete.

220

Gas Valve Adjustment

• Ensure a Reed switch is located properly.

• Ensure the gas valve adjustment is operang

correctly.*

250

Condensate Pump (Accessory)

• Boiler will operate for 60 seconds.

• Conrm wire connecons and harnesses are

good.

• Ensure the condensate reservoir is empty

and condensate pump is operaonal.

310

Freeze Protecon Thermistor

• Check sensor wiring for damage.

• Measure the resistance of the sensor.

• Replace if necessary.

321

Outgoing Thermistor (Combi Only)

• Check sensor wiring for damage.

• Clean sensor of any scale buildup present.

• Measure the resistance of the sensor.

• Replace if necessary.

331

Heat Exchanger Thermistor (Combi Only)

• Check sensor wiring for damage.

• Measure the resistance of the sensor.

• Replace if necessary.

341

Inlet Thermistor (Combi Only)

• Check sensor wiring for damage.

• Measure the resistance of the sensor.

• Replace if necessary.

353

Supply Thermistor

• Check sensor wiring for damage.

• Clean the surface of the sensor.

• Measure the resistance of the sensor.

• Check the return thermistor.

• Replace if necessary.

109

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

363

Return Thermistor

• Check sensor wiring for damage.

• Measure the resistance of the sensor.

• Replace if necessary.

380

Exhaust Thermistor

• Check sensor wiring for damage.

• Clean the surface of the sensor.

• Measure the resistance of the sensor.

• Check the return thermistor.

• Replace if necessary.

393

Outdoor Thermistor

• Ensure that parameter number 00 is set to

the appropriate posion.

• Check sensor wiring for damage.

• Measure the resistance of the sensor.

• Replace if necessary.

400

Pressure Sensor

• Check sensor wiring for damage.

• Measure the voltage of the sensor.

• Replace if necessary.

430

High/Low Water Pressure

• If the water pressure is too low, add water

into the system unl at least 13 PSI is

observed.

• Ensure there are no leaking components in

the CH system.

• If the pressure is too high, adjust the

pressure to a maximum of 30 PSI.

• Ensure the pressure relief valve and water

ll are working correctly.

443

Low Water Cut-O (LWCO)

• Ensure the LWCO device is working

correctly.

• Ensure the LWCO jumper is connected

properly when LWCO is not in use.

• Ensure the output is 24 V AC. If it is not, a

transformer is needed.

520

Solenoid Valve Circuit

• Check the ame rod and wire for

damage.

• Close the gas shut o valve installed

near the boiler.

• Ensure the ame rod and wire are not

wet.

• Check the output from the PC Board to

the solenoid gas valve.

• If the output from the PC Board is

abnormal, replace the PC Board.

• If the output from the PC Board is

normal, replace the gas control.

540

High Exhaust Temperature

• Make sure boiler pump acvates

during operaon.

• Check the exhaust thermistor wiring

for damage.

• Clean the surface of the thermistor.

• Measure the resistance of the exhaust

thermistor.*

• If the sensor has been replaced and the

error sll appears, check the return

thermistor.

• If the boiler is used in a hard water

area, ush the DHW plate heat

exchanger.

• Check the exhaust duct, seal, and

venng for damage.

610

Combuson Fan

• Check the motor wire harness for loose

or damaged connecons.

• Measure resistance and voltage of

motor wire harness.*

• Ensure the combuson fan spins freely.

631

DHW Recirculaon Pump (Combi Only)

• Ensure the DHW recirculaon matches

the Parameter 12 seng.

• Ensure the dedicated return line is

properly installed.

• Ensure the inlet water lter and bypass

lter are clean and free of debris.

• Ensure the DHW recirculaon pump is

connected to the DHW Pump Terminal.

• Ensure the capacity of the recirculaon

pump is sized appropriately for the

piping (DHW recirculaon pump should

be higher than 1.3 GPM).

• Ensure air is removed from the

recirculaon line.

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

110

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

651

Water Flow Control (Combi Only)

• Measure the resistance values and

voltage of the water ow control.*

• Ensure the harness and connector are

not wet.

• If the voltage from the PC Board is

abnormal, replace the PC Board;

otherwise, replace the water ow servo

valve.

661

By-Pass (Combi Only)

• Measure the resistance values and

voltage of the bypass servo valve.*

• Ensure the harness and connector are

not wet.

• If the voltage from the PC Board is

abnormal, replace the PC Board;

otherwise, replace the bypass servo

valve.

670

3-Way Valves (Combi Only)

• Check the CH system water quality.

• Measure the resistance values and

voltage of the 3-way valve control.*

• Replace the 3-way valve control device.

681

Hot Water Supply Temperature

Abnormality

(Combi Only)

• If the DHW water temperature is higher

than the set point temperature because

the boiler bypass servo fails to close.

• Measure resistance values and voltage

of the bypass ow control.*

• Replace the bypass ow control device if

needed; otherwise, check the inlet

thermistor and heat exchanger

thermistor wiring for damage.

• Measure the resistance of the sensor.

Replace if needed.

• Clean the sensor of any scale buildup

present.

700

PC Board

• PC Board circuit error.

• Replace PC Board.

710

Solenoid Valve Circuit

• Ensure Dip switch 5 on the PC Board is in

the OFF posion (default).

• Ensure the gas control wire is not loose

or damaged.

• Ensure the heater circuit is not

grounded.

• Ensure the outgoing thermistor works

without error by using DHW (Combi

Only).

• Replace the PC Board.

720

Flame Rod

• Check the ame rod and wire for damage.

• Ensure the ame rod and wire are not

wet.

• If there is no issue with the ame rod or

wiring, replace the PC Board.

890

Freeze Issue

• The boiler checks the heat exchanger

temperature at the me of operaon. If

the temperature is too low, an error will

occur.

• Check if there is freezing in the boiler or

CH system.

999 PC Board Mismatch

• This code occurs when the PC Board and

the internal logic do not match.

• Check if the soware versions of the

board and operaon board do not match.

Scale Buildup in Heat Exchanger

(Combi Only)

• Flush the DHW plate heat exchanger.

• The LC code will reset automacally when

scaling is removed.

• If the LC code remains, check the DHW

thermistor, ow sensor or boiler pump.

FFF

Maintenance Indicator

• This code is a placeholder in diagnosc

code history indicang a service provider

performed maintenance or service.

• Enter this code aer performing service

by pressing the following buons at the

same me: UP, DOWN, and CH (or DHW).

FFF appears on the monitor.

Service Soon

• Service Soon (SS) is a me-based service

indicator set during installaon. See

parameter 04 in secon “12.4 Parameter

Sengs" for more informaon.

• To reset SS code, press Central Heang

buon 5 mes unl SS disappears.

NO CODE

Nothing Happens When DHW Water Flow is

Acvated (Combi Only)

• Verify the minimum ow rate required to

re the boiler is seen.

• Measure the resistance of the ow

control sensor.*

• Clean the inlet water supply lter.

• On new installaons, ensure the hot and

cold water lines are not reversed.

• Conrm the inlet water temperature is

not too high.

• Ensure the integrated boiler pump

operates properly.

• Ensure the DHW operaon switch is on.

111

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

NO CODE

Decreasing or Fluctuang DHW Water

Flow Volume (Combi Only)

• Ensure the gas pressure is proper.

• Ensure the water pressure is proper.

• Ensure the inlet water lter for DHW is

clean.

• Ensure there is not lime scale buildup

present.

• Ensure the vent and vent sengs are

properly set up.

• If a DHW recirculaon system is used,

the DHW ow volume may vary

slightly.

• Ensure all air has been purged from the

system.

NO CODE

Fluctuang DHW Outgoing Temperature

(Combi Only)

• Ensure the gas pressure is proper.

• Ensure the water pressure is proper.

• Ensure the DHW thermistor, ow

servo, and bypass servo are in good

condion.

• Ensure the inlet lter for DHW is clean.

• If a DHW recirculaon system is used,

the DHW temperature may vary

slightly.

• Ensure all air is removed from the

system.

NO CODE

Boiler Does Not Start Heang With a

Heang Demand Present

• Supply temperature or return

temperature inside the boiler may be

too hot.

• Ensure the pump operates properly.

• If there is a demand immediately aer

using DHW, wait at least three minutes

for operaon.

NO CODE

Cannot Turn o ECO Mode

• During DHW recirculaon, ECO switch

will always be on (Combi only).

NO CODE

Cannot Set Up Lock

• Lock is available only when the

controller has the priority. (When

connecng addional remote

controller) (Combi only).

NO CODE

DHW Recirculaon Does Not Begin

(Combi Only)

• Ensure the DHW recirculaon pump is

connected to the DHW_Pump terminal.

• Ensure parameter number 09 is ON.

• Ensure the DHW recirculaon plumbing

type is set properly per Parameter 12.

• Ensure the DHW recirculaon with mer

relay input is set properly per Parameter

13.

• Ensure the wiring to the external mer is

correct.

• Ensure the external mer is ON, if in use.

• The recirculaon logic has an OFF interval

aer use.

NO CODE

Simultaneous DHW and CH is Not Funconal

(Combi Only)

• Ensure parameter number 08 is ON.

• If CH set point temperature is lower than

140°F/60°C, it is not permied (this

includes outdoor reset temperature

sengs).

• Ensure the DHW inlet temperature is not

too hot.

• Ensure the heang load for DHW and CH

are within limits to handle both

simultaneously.

NO CODE

Cannot Change the DHW Set Point

Temperature (Combi Only)

• When DHW is being produced, the

temperature seng can only be adjusted

between 98°F (37°C) and

110°F (43°C).

NO CODE

Supply Temperature is Dierent From the

Seng Temperature on the Controller

• During outdoor sensor control, the

supply temperature will vary dependent

on the outdoor temperature.

• During simultaneous operaon of DHW

and CH, the supply temperature for CH

is based on DHW control (Combi Only).

NO CODE

CH Capacity is Insucient

• Ensure the parameters are properly set

for the installaon.

• During simultaneous operaon of DHW

and CH, ow volume to heang can be

reduced (Combi Only).

NO CODE

Pump or Fan Even With No Demand

• The boiler may start or operate the

pump for freeze protecon operaon.

• The pump may intermiently operate to

prevent it from becoming stuck.

112

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

5 Press the right-side, black buon again. The

controller now displays FH (the boiler is now

in forced high condion).

6 To enter back into normal operaon, press the right-side, black buon. The controller now

displays normal operaon mode.

This secon should be performed by a licensed professional. Consumers

should never aempt any acon that they are not qualied to perform.

1. Remove the boiler’s front panel by removing the two screws that secure the panel.

2. Locate the PC Board (lower le side of unit).

3. Press and hold the right-side, black buon.

4 The controller displays FL (the boiler is now

in forced low re condion).

Figure 116

Figure 118

Figure 117

WARNING

113

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

• Maintenance is required to maintain

safe operaon of the boiler.

• The boiler must be inspected annually

by a licensed professional. Repairs and

maintenance shall be performed by a

licensed professional. The licensed

professional must verify proper

operaon aer servicing.

• Keep the boiler area clear and free

from combusble materials, gasoline,

and other ammable vapors and

liquids.

• To protect yourself from harm, before

performing maintenance:

− Turn o the electrical power

supply by unplugging the power

cord or by turning o the

electricity at the circuit breaker.

(The boiler controller does not

control the electrical power.)

− Turn o the gas at the manual gas

control valve, usually located

immediately below the boiler.

− Turn o the incoming water

supply. This can be done at the

isolaon valve immediately below

the boiler or by turning o the

water supply to the building.

Topics in this secon

• Owner Maintenance

• Licensed Professional Maintenance

• Test the Ignion Safety Shuto

Device

If you encounter a problem that is dicult to

solve, stop the operaon and immediately

contact a licensed professional.

MONTHLY

Boiler Area

• Verify the area is free of combusble

materials, gasoline and other ammable

vapors and liquids.

• Verify the area is clean from dust and

obstrucons.

• Verify the air intake area is free of any

contaminants listed in the boiler

Installaon and Operaon Manual. Any

contaminants in the boiler intake air

vicinity must be removed. If they cannot be

removed, contact a licensed professional.

Piping

• Inspect all water, gas, and condensaon

piping for leaks. Look for signs of leaking

lines or corrosion.

• Conrm the condensaon line is not

blocked. If a condensaon drain pump is

used, conrm the condensaon drain pump

operates correctly.

Venng

• Verify the boiler vent discharge and air

intake is clean and free of obstrucons.

• Check for leakage, damage, or deformaon

of venng.

Boiler

• Verify the boiler is free from any abnormal

situaons, such as diagnosc error codes,

loud noises, leakage or other potenal

issues.

• Check that the pressure on the controller

display or external pressure gauge indicates

17 to 26 PSI (117 to 180 kPa).

Table 45

WARNING

114

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

ANNUALLY

Vent System • Inspect for blockages or damage.

• Inspect vent screen or room air lter (if using) for debris and blockages.

Clean if needed.

Fan and

Motors

Clean dust and dirt from fan and motor (motors are permanently lubricated and

do not require lubricaon).

Controller Clean by using a so, damp cloth. Do not use solvents.

Pressure Conrm the pressure is within the proper range (between 17-26 PSI). If the

pressure is lower than the specied range, add water unl in the proper range.

Pressure Relief

Valve

Operate the pressure relief valve manually once a year. In doing so, it will be

necessary to take precauons with regard to the discharge of potenally scalding

hot water under pressure. Ensure discharge has a safe place to ow. Contact with

your body or other property may cause damage or harm.

Heang

System

Dirt Trap

Clean annually. Be sure to close the shut o valves under the boiler. Aer cleaning

and installing the lter, purge the air.

Expansion

Tank

Perform annual checks as recommended by the manufacturer to ensure proper

operaon.

Condensaon

Trap

Check if the trap contains sediment. To remove sediment, unplug the boom of

the condensate trap. Remove the sediment, and then return the plug. Do not use

a wrench to ghten the condensate drain as this could cause the connecon to

break.

Condensaon

Drain

• Conrm the condensaon drain line is not blocked or clocked.

• Ensure the condensaon drain pump (if ulized) is working correctly.

Draining

Water

When the system will be shutdown for a long period of me (seasonal shutdown),

close the shuto valves below the boiler and drain the boiler to protect it from

potenal freeze damage.

Tesng the pressure relief valve should only be performed by

a licensed professional. Water discharged from the pressure

relief valve could cause severe burns instantly or death from scalds.

Table 46

WARNING

115

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Pump Lock Conrm the pump operates smoothly. The boiler operates pump lock operaon

at least in 48 hours for all of system pumps. If it is pump locked, rotate the cap in

front of pump by at driver.

Water Quality Conrm the water quality. Refer to secon “4.4.1 Water Quality Guidelines” to

determine if the water needs to be treated or condioned. DHW must be

potable, free of corrosive chemicals, sand, dirt, or other contaminates. It is up to

the installer to ensure the water does not contain corrosive chemicals or

elements that can aect or damage the heat exchanger. Water that contains

chemicals exceeding the levels required aect and damage the heat exchanger.

Replacement of the heat exchanger due to water quality damage is not covered

by the warranty.

Snow

Accumulaon

• Verify the area around the ue terminal is free of snow and ice. The boiler will

not funcon properly if the combuson air or exhaust vent pipes are impeded

(blocked or parally blocked) by obstrucons.

• Verify the condensate drain line is free of snow and ice. Ensure the line is not

blocked or clogged and that condensate is owing freely.

Freeze

Protecon

• Freeze protecon for new or exisng systems must use glycol that is specially

formulated for this purpose. This includes inhibitors, which prevent the glycol

from aacking the metallic components. The glycol should be for mul-

metallic components. Reference secon “14.1 Approved Cleaners, Inhibitors

and Anfreezes” in the Appendix for an approved list of system cleaners,

inhibitors, and anfreezes.

• Check that the system uid is correct for the glycol concentraon and inhibitor

level. The system should be tested at least once a year and as recommended

by the producer of the glycol soluon. The allowed maximum concentraon is

40 percent.

Coast Area

Installaons

Installaons located in or near coastal areas may require addional maintenance

due to corrosive airborne ocean salt. If corrosion is observed on the body of the

boiler, the boiler shall be inspected to ensure proper operaon and repaired or

replaced, if necessary.

Cleaning It is imperave that control compartments, burners, and circulang air

passageways of the boiler be kept clean. Check burner ame for proper color.

Once ignited, the ame must cover the surface of the burner. The ame must

burn with a clear, blue, stable ame. If the ame does not have this appearance,

complete the following steps:

• Turn o and disconnect electrical power. Allow to cool.

• Remove the front panel.

• Use a vacuum to remove dust from the main burner and fan blades. Do not

use a wet cloth or spray cleaners on the burner. Do not use volale

substances such as benzene and thinners; they may ignite or fade the paint.

• Do not open the burner cabinet and touch the burner surface.

Condensate Trap Cleaning:

• Inspect the condensate drain assembly inside the boiler and your external

drain system.

• Remove any debris that may be present in the condensate removal system.

116

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

AFTER SERVICING: VISUAL INSPECTION OF FLAME

Verify proper operaon aer servicing. The burner must ame evenly over the enre surface when

operang correctly. The ame must burn with a clear, blue, stable ame. See the parts breakdown

of the burner for the locaon of the view ports. The ame paern should be as shown in the images

below:

SATISFACTORY

Front View

Blue Flame

Flame Rod

UNSATISFACTORY

Front View

Intake

Filter

Inspecon:

• To maintain opmum performance, periodically inspect the air lter.

• If the air lter appears to have lint and/or dust build up, follow the cleaning

procedure described below.

• If the air lter appears damaged, contact a trained and qualied professional for a

replacement air lter assembly.

Cleaning:

• Clean the Air Filter: With mild dish soap and a so bristle brush, scrub the lter area

of the air lter door. With clean water, rinse the soap o the lter.

• Dry the Air Filter: With a lint free towel, dry the air lter.

Yellow or Green ame

Freeze Protecon Operaon

When the boiler detects low outdoor ambient

temperatures, the boiler will begin its freeze

protecon operaon. The freeze protecon

operaon can protect the boiler from freezing

down to as low as -22°F (-30°C) outdoor

temperature.

When freeze protecon is in operaon, the

pump may circulate water and/or the boiler

may operate to prevent the boiler from

freezing.

Ensure power and gas are supplied to the

boiler for freeze protecon to funcon. The

internal freeze protecon will not necessarily

prevent the system piping from freezing.

During freeze protecon operaon, the

pressure and supply temperature will

alternately display on the controller.

The icon for CH and DHW may alternate

depending on the operaon of the freeze

protecon sequence.

When the system needs to be shutdown for

extended periods of me, the boiler and all system

piping should be drained. The power and gas

supply should then be disconnected from the

boiler. Freezing damage may occur if there is water

remaining in the boiler or system piping. The

plumbing lines should also be blown out via

compressed air.

Figure 119

Figure 122

Figure 121

Figure 120

117

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Do not touch the inside of the wiring connecon while it is disconnected.

1. Ensure the boiler is not currently ring and the ame rod is not hot.

2. Remove the boiler front panel.

3. Disconnect the wiring connecon from the le side ame rod (located on front of the boiler

under the burner).

Remove Wiring

Connecon

4. Place the boiler in operaon by either a call for heat or by turning on a Domesc Hot Water

xture.

5. The boiler iniates one start-up aempt and mulple restart aempts.

Aer the last start-up aempt, the boiler locks out and the gas valve shuts o. Code

110 appears

on the controller display which indicates ignion system safety shuto.

6. Reconnect the wiring connecon to the ame rod. Be careful not to touch the inside of the

wiring connecon. To reset the error, press the Central Heang buon. The boiler starts up.

7. Replace the boiler front panel.

8. The boiler may now go back into normal operaon.

Figure 124

WARNING

Boiler Front Side

Figure 123

118

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Approved System Cleaners:

• Fernox F3 Cleaner

• Noble Noburst Hydronic System Cleaner

• Rhomar Hydro-Solv 9100

• Sennel X400

Approved System Inhibitors:

• Fernox F1

• Noble Noburst AL Inhibitor

• Rhomar Pro-tek 922

• Sennel X100

Approved System Anfreezes:

• Chem Frost 100%

• Cryo-Tek 100

• Fernox Alphi 11

• Hall-Chem Solar II

• NemFrost-PG HTF

• Rechochem Recofreeze AL

• Rhomar RhoGard Mutli-Metal (AL safe)

• Sennel X500

• Univar Vanfrost

Below is a list of approved system cleaners, inhibitors, and anfreezes for use in hydronic plumbing

systems ulizing Rinnai boilers.

IMPORTANT

• If replacing a boiler, add system cleaners while the old boiler is installed and operate the old

boiler for heang for several days to most eecvely clean the system.

• The Rinnai boiler must be closed o (valved o) from the rest of the system, or not

connected, while cleaners are in the system.

• When cleaning is complete, drain the system and then ush with clean water to remove any

sediment.

Topics in this secon

• Approved Cleaners, Inhibitors and

Anfreezes

• Flush the CH Plumbing System

• System Applicaon Examples

• Gas Conversion

• Wiring Diagram

• Ladder Diagram

• CH Pressure Drop and Flow Curve

• Remove a Boiler from a Common Vent System

• Massachuses State Gas Regulaons

• Warranty

119

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Note: This secon explains how to ush the CH plumbing system.

When replacing an exisng boiler, the heang system shall be ushed with an approved system

cleaner before the new boiler is added to the system.

Manual Flush Procedure:

Note: Reference secon “14.1 Approved Cleaners, Inhibitors and Anfreezes” in the Appendix for

an approved list of system cleaners, inhibitors, and anfreezes.

1. Disconnect the power supply to the boiler and turn o gas.

2. Add an approved cleaner to the system following the manufacturer’s direcons. Allow the

boiler to run for 3 days in DHW and/or heang operaon.

3. Flush the boiler and the system, and clean the dirt trap if present.

4. Purge the boiler and the system as described below. Add an approved inhibitor

(recommended). Run the boiler in its deaeraon program per the instrucons in secon “10.3

Deaeraon Process.”

Boiler Flush or Purge Procedure:

• System: Close supply shuto #3 and boiler valves #1 and #2. Open autoll to at least 20

PSI, then ush or purge through Hose #2 by opening boiler drain #4.

• Boiler: Keep valves #1 and #3 closed. Open #2 and close #4. With the autoll open to at

least 20 PSI, ush or purge the boiler through Hose #1.

Note: When purging,

connue unl no bubbles

are seen in the bucket.

Hose 2

Hose 1

Supply

Shuto

Autoll Assembly

Boiler Purge and

Isolaon Valves

Heat Emier

Dirt Trap

Boiler

Drain

Figure 125

120

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Boiler Automated Flush Procedure:

1. Shut o gas supply and turn o DHW and

CH buons on the controller.

SW3

Buon

5. Press the up or down arrow buon on the controller to select dES (descaling) (Figure 128).

6. Press the Select buon to select the dES (Figure 128).

Figure 128

dES

7. Make sure the valves and hoses are set up as shown in the previous page. Next,

operate the pump and allow the cleaner to circulate through the boiler for at least

1 hour at a rate of four gallons per minute (15.1 liters per minute).

8. Press the Central Heang (CH) buon to start the count down (Figure 128).

9. Display shows “60” (Figure 129) which indicates the remaining ush me in

minutes. The number decreases by 1 every minute.

Note: If you need to cancel this procedure, you may press the Sengs Menu buon

on the controller (Figure 128), or press the SW3 buon on the PC Board (Figure 127).

Figure 129

Figure 127

2. Remove the boiler front panel by removing the two screws that secure the panel.

3. Locate the PC Board (lower le side of unit).

4. Press the SW3 buon on the PC Board (Figure 127).

CH Buon

Select Buon

Figure 126

PC Board

Sengs Menu Buon

121

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

10. Aer 60 minutes ushing me completes, display shows “rnS” (rinsing) (Figure 130) and

beeping sound is observed.

Figure 130

rnS

11. Turn o the pump.

12(A). Rinse cleaner from system:

a. Remove the free end of the drain hose (H2) from the pail. Place in sink or outside to

drain. Open autoll to at least 20 PSI.

b. Close boiler valves 1 and 2. Close shuto valve (V3).

c. Open drain valve 4.

d. Allow water to ow through the boiler for ve minutes.

e. Close drain valve (V4).

f. Open shuto valve (V3), boiler valve 1 and 2.

12(B). Rinse cleaner from boiler:

a. Remove the free end of the drain hose (H1) from the pail. Place in sink or outside to

drain. Open autoll to at least 20 PSI.

b. Close drain valve (V4).

c. Open boiler valves 1 and 2. Close shuto valve (V3).

d. Allow water to ow through the boiler for ve minutes.

e. Open shuto valve (V3).

13. Push the Select buon, and the display shows “End” (Figure 131).

IMPORTANT

Scale build-up will aect the performance of the boiler. Water should be treated. Rinnai oers

Southeastern Filtraon’s “Scale Cuer Water Condioning System” that oers superior lime scale

prevenon and corrosion control by feeding a blend of control compounds into the cold water supply.

14. Disconnect all hoses.

15. Push the Select buon to go back to "dES” and press the SW 3 on the PC board to put the unit

back to normal mode.

16. Install the front panel and restore gas supply.

Figure 131

End

122

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Legend:

Refer to the legend below for the system applicaons shown in this secon.

IMPORTANT

Primary/secondary piping is necessary in the following applicaons:

• When using external pumps

• Large zoned systems

• High ow applicaons

• Systems with high dierenal pressures

• Systems with high pressure drops

For pressure curve informaon, refer to the following secons in the Appendix.

• 14.7 CH Pressure Drop and Flow Curve

This picture illustrates a suggested ar-

rangement. Some of the ngs

are oponal.

Radiator with

Thermostac

Figure 132

123

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Outdoor

Sensor

Thermostat

Heat Emier

Oponal Low Water Cut-O (LWCO)

Oponal LWCO

Thermostat

Outdoor Sensor

Figure 133

C R W

Zone Pump

Connecon 1

T/T 1 Connecon

PC Board Wiring

for the above

applicaon example

Boiler Pump

Connecon

Pump

PC Board

Thermostat

124

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 134

120V Input

Zone

Controller

Oponal LWCO

Thermostats

Purge Staon

C R W

Boiler Pump

Connecon

T/T 1 Connecon

Zone Control

Thermostat 1

Pump

Thermostat 2

Thermostat 3

Thermostat 4

125

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 135

Boiler Pump

Connecon

C R W

T/T 1

Connecon

Thermostat

T/T 2

Connecon

Thermostat

External Pump

Connecon

Pump

T/T 3

Connecon

Thermostat

T/T 4

Connecon

Thermostat

Pump

PC Board Wiring

for the above

applicaon example

Outdoor

Sensor

Thermostats

Heat Emiers

Oponal Low Water Cut-O (LWCO)

Oponal LWCO

Heat Emiers

Thermostats

Outdoor

Sensor

126

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

This boiler is congured for Natural Gas only.

To convert to Propane Gas, follow the

instrucons in this secon.

For installaons in Canada, the conversion

shall be carried out in accordance with the

requirements of the provincial authories

having jurisdicon and in accordance with the

requirements of the CGA-B149.1, Natural Gas

and Propane Installaon Code.

The appliance must be installed in accordance

with:

• Local codes or, in the absence of local

codes, the Naonal Fuel Gas Code, ANSI

Z223.1/NFPA 54 and/or CSA B149.1,

Natural Gas and Propane Installaon

Code.

• The Manufactured Home Construcon and

Safety Standard, Title 24 CFR, Part 3280

and/or CAN/CSA Z240 MH Series, Mobile

Homes, Series M86 / Manufactured Home

Construcon and Safety Standard, Title 24

CFR.

IMPORTANT

• Before you get started, conrm that the

inlet gas pressure is between the

minimum and maximum pressures

allowed for this boiler.

• If subsequent conversions are made,

then a new conversion label must be

placed on the boiler to accurately reect

the gas type.

The gas supply shall be shut o prior to

disconnecng the electrical power, before

proceeding with the conversion.

Do not touch any other areas on the PC board

other than the described buons while power

is supplied to the appliance. Parts of the PC

board are supplied with 120 volts AC.

Do not touch the areas at or near the heat

exchanger or hot water lines. These areas

become very hot and could cause burns.

• The conversion kit shall be installed by a

qualied service agency in accordance

with the manufacturer’s instrucons and

all applicable codes and requirements of

the authority having jurisdicon. The

informaon in these instrucons must be

followed exactly to minimize the risk of re

or explosion or to prevent property

damage, personal injury or death. The

qualied service agency is responsible for

the proper installaon of this kit. The

installaon is not proper and complete

unl the operaon of the converted

appliance is checked as specied in the

manufacturer’s instrucons supplied with

the kit.

• Failure to correctly assemble the

components according to these

instrucons may result in a gas leak or

explosion.

• Conversion Rang Plate

WARNING

CAUTION

127

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

1. Locate the PC Board (lower le side of unit).

2. Locate the le PC Board buon.

3. Press and hold the buon for ve seconds (Figure 136). 00-A appears (Figure 137).

4. Scroll to parameter AO and press the

Select buon.

5. Press the (Up) or (Down) arrows to select

the appropriate gas type.

• Select A for Natural Gas (NG)

• Select for Propane (LP)

Then, press the Select buon.

6. Parameter sengs are complete. To enter normal operaon mode, press the le PC Board buon.

NATURAL GAS

PROPANE

Figure 137

Figure 136

Figure 138

Figure 139 Figure 140

PC Board

128

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

SATISFACTORY

Front View

Blue Flame

UNSATISFACTORY

Flame

Rod

Flame

Rod

Yellow or

Green Flame

3. Reinstall the boiler front panel using the two screws to secure it.

1. Check the normal operang sequence:

a. When you press the ON/OFF buon, the LED display will illuminate, the combuson fan

will begin to run if water is owing, and the spark will ignite the main burner.

b. This boiler has an automac ignion system. When the main burner has lit, the “In Use”

lamp will glow red and the spark will stop.

2. Visual inspecon of ame:

a. Check that the burner ames are operang normally. The ame can be seen through the

circular window above the burner. When operang normally, the burner ame should

burn evenly over the enre surface. The ame should be clear, blue, and stable. A yellow

ame is abnormal and maintenance is required.

Combuson analysis must be performed by a trained and qualied

professional.

To perform a combuson analysis:

1. Remove the boiler’s front panel by removing the

two screws that secure the panel.

2. Remove the clamp holding the combuson analysis

port cap.

3. Remove the combuson analysis port cap and

insert the gas analyzer probe into the port.

4. Put the boiler into operaon in forced high re or

low re as necessary (see secon “12.9 Forced Hi/

Low Fire Modes”). Measure CO

or O

, as

applicable, in the exhaust system.

5. Aer measurement, remove the gas analyzer

probe, place the combuson analysis port cap back

on, and reinstall the clamp to secure the cap in

place.

Insert gas analyzer probe into

combuson analysis port.

Figure 142

Figure 141

WARNING

129

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 143

130

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 144

131

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Figure 145

IP060S and IP090S

IP120S and IP150S

Water Flow (GPM)

Pressure Loss (Feet of Head)

132

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

The following informaon is required by ANSI Z21.13:

If a boiler is removed from a common vent system, the common vent system is likely to be too

large for proper venng of the remaining appliances connected to it.

The instrucons shall include the test procedure set forth below:

At the me of removal of an exisng boiler, the following steps shall be followed with each other

appliances remaining connected to the common venng system are not in operaon.

1. Seal any unused openings in the common venng system.

2. Visually inspect the venng system for proper size and horizontal pitch and determine

there is no blockage or restricon, leakage, corrosion and other deciencies which could

cause an unsafe condion.

3. Insofar as is praccal, close all building doors and windows and all doors between the

space in which the appliances remaining connected to the common venng system are

located and other spaces of the building. Turn on clothes dryers and any appliance not

connected to the common venng system. Turn on any exhaust fans, such as range hoods

and bathroom exhausts, so they will operate at maximum speed. Do not operate a

summer exhaust fan. Close replace dampers.

4. Place in operaon the appliance being inspected. Follow the lighng instrucons. Adjust

thermostat so appliance will operate connuously.

5. Test for spillage at the dra hood relief opening aer ve minutes of main burner

operaon. Use the ame of a match or candle, or smoke from a cigaree, cigar, or pipe.

6. Aer it has been determined that each appliance remaining connected to the common

venng system properly vents when tested as outlined above, return doors, windows,

exhaust fans, replace dampers, and any other gas-burning appliance to their previous

condion of use.

7. Any improper operaon of the common venng system should be corrected so the

installaon conforms with the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the

Natural Gas and Propane Installaon Code, CAN/CSA B149.1. When resizing any poron of

the common venng system, the common venng system should be resized to approach

the minimum size as determined using the appropriate tables in Chapter 13 of the

Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane

Installaon Code, CAN/CSA B149.1.

133

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

FOR GAS MODELS SOLD IN MASSACHUSETTS

NOTICE BEFORE INSTALLATION:

This direct-vent appliance must be installed by a properly trained licensed professional. If you are

not properly trained, you must not install this unit.

IMPORTANT: In the State of Massachuses (248 CMR 4.00 & 5.00):

For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or

structure used in whole or in part for residenal purposes, including those owned or operated by

the Commonwealth and where the side wall exhaust vent terminaon is less than 7  above

nished grade in the area of the venng, including but not limited to decks and porches, the

following requirements shall be sased:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the me of installaon of the side wall

horizontal vented gas fueled equipment, the installing plumber or gaser shall observe that a

hard wired carbon monoxide detector with an alarm and baery back-up is installed on the

oor level where the gas equipment is to be installed. In addion, the installing plumber or

gaser shall observe that a baery operated or hard wired carbon monoxide detector with

an alarm is installed on each addional level of the dwelling, building or structure served by

the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the

property owner to secure the services of qualied licensed professionals for the installaon of

hard wired carbon monoxide detectors

A. In the event that the side wall horizontally vented gas fueled equipment is installed in a

crawl space or an ac, the hard wired carbon monoxide detector with alarm and baery

back-up may be installed on the next adjacent oor level.

B. In the event that the requirements of this subdivision can not be met at the me of

compleon of installaon, the owner shall have a period of thirty (30) days to comply with

the above requirements; provided, however, that during said thirty (30) day period, a

baery operated carbon monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in

accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed

and IAS cered.

3. SIGNAGE. A metal or plasc idencaon plate shall be permanently mounted to the exterior

of the building at a minimum height of 8  above grade directly in line with the exhaust vent

terminal for the horizontally vented gas fueled heang appliance or equipment. The sign shall

read, in print size no less than one-half (1/2) inch in size, "GAS VENT DIRECTLY BELOW. KEEP

CLEAR OF ALL OBSTRUCTIONS.”

4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled

equipment shall not approve the installaon unless, upon inspecon, the inspector observes

carbon monoxide detectors and signage installed in accordance with the provisions of 248

CMR 5.08(2)(a)1 through 4.

134

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

FCC Interference Statement:

This device complies with Part 15 of the FCC Rules. Operaon is subject to the following two

condions: (1) This device may not cause harmful interference, and (2) this device must accept

any interference received, including interference that may cause undesired operaon.

This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable

protecon against harmful interference in a residenal installaon. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and used in accordance with

the instrucons, may cause harmful interference to radio communicaons. However, there is

no guarantee that interference will not occur in a parcular installaon. If this equipment does

cause harmful interference to radio or television recepon, which can be determined by turning

the equipment o and on, the user is encouraged to try to correct the interference by one of the

following measures:

− Reorient or relocate the receiving antenna.

− Increase the separaon between the equipment and receiver.

− Connect the equipment into an outlet on a circuit dierent from that to which the

receiver is connected.

− Consult the dealer or an experienced radio/TV technician for help.

FCC Cauon: Any changes or modicaons not expressly approved by the party responsible for

compliance could void the user's authority to operate this equipment.

This transmier must not be co-located or operang in conjuncon with any other antenna or

transmier.

Radiaon Exposure Statement:

The product comply with the FCC portable RF exposure limit set forth for an uncontrolled

environment and are safe for intended operaon as described in this manual. The further RF

exposure reducon can be achieved if the product can be kept as far as possible from the user

body or set the device to lower output power if such funcon is available.

135

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

This device complies with ISED’s licence-exempt RSSs. Operaon is subject to the following two

condions: (1) This device may not cause harmful interference, and (2) this device must accept

any interference received, including interference that may cause undesired operaon.

Le présent appareil est conforme aux CNR d’ ISED applicables aux appareils radio exempts de

licence. L’exploitaon est autorisée aux deux condions suivantes : (1) le disposif ne doit pas

produire de brouillage préjudiciable, et (2) ce disposif doit accepter tout brouillage reçu, y

compris un brouillage suscepble de provoquer un fonconnement indésirable.

Radiaon Exposure Statement:

This equipment complies with ISED radiaon exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with minimum distance 20cm

between the radiator & your body.

Déclaraon d'exposion aux radiaons:

Cet équipement est conforme aux limites d'exposion aux rayonnements ISED établies pour un

environnement non contrôlé. Cet équipement doit être installé et ulisé avec un minimum de

20 cm de distance entre la source de rayonnement et votre corps.

136

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Item Residenal Applicaons Commercial Applicaons

Heat Exchanger 12 Years 5 Years

All Other Parts and Components* 5 Years 5 Years

Reasonable Labor 1 Year 1 Year

Limited Warranty for I-Series Plus Boiler Models

Boiler Models:

• IP060S (REB-B1800FF-US)

• IP090S (REB-B2600FF-US)

• IP120S (REB-B3500FF-US)

• IP150S (REB-B4400FF-US)

What Is Covered?

The Rinnai Standard Limited Warranty covers any defects in materials or workmanship when the

product is installed and operated according to Rinnai wrien installaon instrucons, subject to

the terms within this Limited Warranty document. This Limited Warranty applies only to products

that are installed in the United States and Canada. Improper installaon may void this Limited

Warranty. It is strongly recommended that you use a trained and qualied professional who has

aended a Rinnai installaon training class before installing this boiler. This Limited Warranty is

subject to the condions that the Rinnai boiler has been installed and proper maintenance has

been performed, according to the Installaon and Servicing Instrucons, by a professional heang

contractor. Proof of the required service and maintenance must be kept in the provided Rinnai

Installaon, Commissioning and Service Record. This Limited Warranty coverage as set out in the

table below extends to the original purchaser and subsequent owners, but only while the product

remains at the site of the original installaon. This Limited Warranty only extends to the rst /

original installaon of the product and terminates if the product is moved or reinstalled at a new

locaon.

* Parts replaced during recommended maintenance procedures are not covered by this Limited Warranty.

What Will Rinnai Do?

Rinnai will repair or replace the covered product or any part or component that is defecve in

materials or workmanship as set forth in the above table. Rinnai will pay reasonable labor charges

associated with the repair or replacement of any such part or component during the term of the

labor warranty period. All repair parts must be genuine Rinnai parts. All repairs or replacements

must be performed by a licensed professional who is properly trained to do the type of repair.

Replacement of the product may be authorized by Rinnai only at its sole discreon. Rinnai does not

authorize any person or company to assume for it any obligaon or liability in connecon with the

replacement of the product. If Rinnai determines that repair of a product is not possible, Rinnai

may replace the product with a comparable product at Rinnai’s sole discreon. The warranty claim

for product parts and labor may be denied if a component or product returned to Rinnai is found to

be free of defects in material or workmanship; damaged by improper installaon, use or operaon;

or damaged during return shipping.

Table 47

137

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

How Do I Get Service? You must contact a trained and qualied professional for the repair of a

product under this Limited Warranty. For the name of a trained and qualied professional, please

contact your place of purchase, visit the Rinnai website (www.rinnai.us), call Rinnai at 1-800-621-9419

or write to Rinnai at 103 Internaonal Drive, Peachtree City, Georgia 30269.

Proof of purchase is required to obtain warranty service. You may show proof of purchase with a

dated sales receipt, or by registering within 90 days of purchasing the product. To register your Rinnai

Condensing Boiler, please visit www.rinnai.us. For those without internet access, please call 1-866-

RINNAI1 (746-6241). Receipt of Registraon by Rinnai will constute proof-of-purchase for this

product. Registraon of product installed in new home construcon may be veried with a copy of

the closing papers provided by the inial home buyer. However, Registraon is not necessary in order

to validate this Limited Warranty.

What Is Not Covered? This warranty does not cover any failures, heat exchanger leakage, or

operang dicules due to the following:

• Accident, abuse or misuse

• Alteraon

• Misapplicaon

• Force majeure

• Improper installaon (such as but not limited to inadequate water quality, condensate

damage, improper venng, incorrect gas type, incorrect gas or water pressure, or absence of

a drain pan under the product)

• Improper maintenance (such as but not limited to scale build-up, freeze damage, or vent

blockage)

• Improper water quality or the use of unapproved anfreeze or other chemical addives in

the boiler system

• Installaon of the boiler in a heang system where polybutylene pipe without an oxygen

barrier is used

• Any installaon that is not closed loop or where oxygen may enter the heang system

• Use in or around areas where chemical agents are used (such as but not limited to chlorine,

hair spray, or hair dyes)

• Damage or failure caused by contaminated air, including, but not limited to sheetrock

parcles, plasterboard parcles, dust, dirt, or lint entering the boiler or any of its

components

• Incorrect sizing

• A failure of any component in the Hydronic system not supplied by Rinnai

• Any other causes other than defects in materials or workmanship

This Limited Warranty does not cover any product used in an applicaon that uses chemically treated

water such as a pool or spa heater.

If you purchase a Rinnai product from an unauthorized dealer, or if the original factory serial number

has been removed, defaced or altered, your Rinnai warranty will not be valid.

Limitaon on Warranes — No one is authorized to make any other warranes on behalf of Rinnai

America Corporaon. Except as expressly provided herein, there are no other warranes, expressed

or implied, including, but not limited to warranes of merchantability or tness for a parcular

purpose, which extend beyond the descripon of the warranty herein.

Any implied warranes of merchantability and tness arising under state law are limited in duraon

to the period of coverage provided by this Limited Warranty, unless the period provided by state law

is less. Some states do not allow limitaons on how long an implied Limited Warranty lasts, so the

above limitaon may not apply to you.

Rinnai shall not be liable for indirect, incidental, special, consequenal or other similar damages that

may arise, including lost prots, damage to person or property, loss of use, inconvenience, or liability

arising from improper installaon, service or use. Some states do not allow the exclusion or limitaon

of incidental or consequenal damages, so the above limitaon may not apply to you.

This Limited Warranty gives you specic legal rights, and you may also have other rights which vary

from state to state. www.rinnai.us/warranty

138

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

139

Rinnai I-Series Plus Condensing Heat-Only Boiler Manual

Rinnai IP090S

Product's Documents

150K BTU and Smaller Solo Boiler Owners Installation and Operation Manual - I Series Plus Models

Specifications

Rinnai IP090S Questions and Answers