Rinnai RUR199EN User Manual

●

H167-0771-2X01(00)

2 Rinnai I-Series Condensing Boiler Solo Manual

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.

WARNING

1. Welcome ................................................................................................................................................... 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 ......................................................................................................................... 19

4.6 Fill the Condensate Collector ......................................................................................................................... 20

5. Venng ................................................................................................................................................... 21

5.1 Guidelines ...................................................................................................................................................... 21

5.2 Venng Installaon Sequence ....................................................................................................................... 22

5.3 Terminaon Consideraons........................................................................................................................... 22

5.4 PVC Venng Safety Switch ............................................................................................................................. 23

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

6. Gas Supply............................................................................................................................................... 46

6.1 Connect the Gas Supply ................................................................................................................................. 46

6.2 Gas Operang Instrucons ............................................................................................................................ 47

6.3 Gas Pipe Sizing Reference Tables ................................................................................................................... 48

7. CH System Piping ..................................................................................................................................... 50

7.1 Guidelines ...................................................................................................................................................... 50

7.2 Instrucons .................................................................................................................................................... 50

7.3 Common CH Components ............................................................................................................................. 51

7.4 Piping Diagram for a Basic CH System (With Hydraulic Separaon) ............................................................. 53

7.5 Hydraulic Separaon ...................................................................................................................................... 54

7.6 Connect the Pressure Relief Valves ............................................................................................................... 57

7.7 Connect the Condensate Drain Line .............................................................................................................. 58

7.8 Condensate Pump Safety Switch Wiring ........................................................................................................ 59

Rinnai I-Series Condensing Boiler Solo Manual 3

8. DHW System Piping with Indirect Tank ..................................................................................................... 61

8.1 Guidelines ...................................................................................................................................................... 61

8.2 Indirect Tank Control Opons ....................................................................................................................... 61

8.3 Indirect Tank Electrical Connecons ............................................................................................................. 62

8.4 Simultaneous CH and DHW Operaon .......................................................................................................... 64

8.5 Indirect Tank Parameter Sengs .................................................................................................................. 65

8.6 Piping Diagram for a Basic DHW Installaon ................................................................................................. 66

9. Power Supply ........................................................................................................................................... 67

9.1 Guidelines ...................................................................................................................................................... 67

9.2 Electrical Connecons ................................................................................................................................... 68

9.3 Post-Power Supply Connecon Checklist ...................................................................................................... 68

10. Commissioning ....................................................................................................................................... 69

10.1 Safety Precauons ....................................................................................................................................... 69

10.2 Filling Process .............................................................................................................................................. 69

10.3 Deaeraon Process ...................................................................................................................................... 70

11. Post-Installaon Checklist ...................................................................................................................... 72

12. Operaon .............................................................................................................................................. 74

12.1 Start-Up Informaon ................................................................................................................................... 74

12.2 Control Panel ............................................................................................................................................... 75

12.3 Basic Operaon Sengs .............................................................................................................................. 77

12.4 Parameter Sengs ...................................................................................................................................... 88

12.5 Outdoor Reset Control ................................................................................................................................ 94

12.6 Diagnosc Codes ......................................................................................................................................... 99

12.7 Forced Hi/Low Fire Modes ........................................................................................................................ 103

13. Maintenance ........................................................................................................................................ 104

13.1 Owner Maintenance .................................................................................................................................. 104

13.2 Licensed Professional Maintenance .......................................................................................................... 105

13.3 Test the Ignion Safety Shut O Device .................................................................................................... 108

14. Appendices .......................................................................................................................................... 109

14.1 Approved Cleaners, Inhibitors and Anfreezes ........................................................................................ 109

14.2 Flush the CH Plumbing System ................................................................................................................. 110

14.3 System Applicaon Examples ................................................................................................................... 111

14.4 Gas Conversion ......................................................................................................................................... 117

14.5 Wiring Diagram ......................................................................................................................................... 121

14.6 Ladder Diagram ........................................................................................................................................ 122

14.7 Pressure Drop and Flow Curve ................................................................................................................. 123

14.8 Remove a Boiler from a Common Vent System ....................................................................................... 124

14.9 Massachuses State Gas Regulaons ...................................................................................................... 125

14.10 Warranty .................................................................................................................................................. 126

4 Rinnai I-Series Condensing Boiler Solo Manual

Thank you for purchasing a Rinnai 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.

• 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.

ANSI

American Naonal Standards

Instute

Btu Brish Thermal Unit

CH Central Heang

SOLO

Heang only boiler capable of

DHW through an indirect tank

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

For Your Records

Dealer Name:

Located on le

side of unit

• 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 Condensing Boilers

is accessible at

www.trainingevents.rinnai.us.

• 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:

Dealer Phone:

Purchase Date:

Serial #:

Rinnai I-Series Condensing Boiler Solo Manual 5

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.

DANGER

CAUTION

WARNING

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.

Safety alert symbol. Alerts you

to potenal hazards that can

kill or hurt you and others.

WARNING

6 Rinnai I-Series Condensing Boiler Solo 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 and return 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.

• 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.

• 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.

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 Condensing Boiler Solo Manual 7

The I-Series Condensing Boiler is a wall-

mounted, gas-red boiler designed to

provide heang to the building with the

ability to connect an indirect tank for DHW

producon.

For complete boiler informaon, refer to the

“Rinnai I-Series Condensing Boiler

Installaon Manual” supplied with the boiler,

or visit rinnai.us.

Topics in this secon

• Front View

• Boom View

• Components

• Specicaons

• Dimensions

• Accessories

Vent

Connecons

Piping Connecons

Controller

Central

Heang

Supply

Gas

Central

Heang

Return

8 Rinnai I-Series Condensing Boiler Solo Manual

All items are eld-supplied unless otherwise noted.

Supply to CH System Condensate Drain

Return from CH System Gas Supply

Primary-Secondary Heang Kit CH Return

CH Pressure Relief Valve (supplied with boiler) CH Pressure Gauge

CH Supply Gas Shut O Valve

Boiler Pump

Rinnai I-Series Condensing Boiler Solo Manual 9

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

10 Rinnai I-Series Condensing Boiler Solo Manual

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 i060S i090S i120S i150S

Dimensions - w, h, d 18.5 in. x 26.4 in. x 11.45 in. (471 mm x 671mm x 290 mm)

Weight 59.2 lb (27 kg) 62.0 lb (28 kg)

Appliance Type Wall-Mounted, Gas-Fired 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

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

Temperature

Seng

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 37 dB(A) 41 dB(A) 40 dB(A) 42 dB(A)

Electrical Data

Normal 36 W 50 W 50 W 50 W

Standby 4 W

Max Current

6 Amps

Fuse

10 Amps x 2

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 Condensing Boiler Solo Manual 11

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

Measurements: in. (mm)

12 Rinnai I-Series Condensing Boiler Solo Manual

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

Condensate

Drain

Central Heang

Return

Gas

Central Heang

Supply

Rinnai I-Series Condensing Boiler Solo Manual 13

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

CONDENSATE NEUTRALIZER

Part #: 804000074

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 ScaleCuer

lter assembly.

PRIMARY-SECONDARY HEATING KIT

Part #: 807000213

14 Rinnai I-Series Condensing Boiler Solo Manual

THIS SECTION IS INTENDED

FOR THE INSTALLER

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 Boilers is

accessible online at

www.trainingevents.rinnai.us.

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

• 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.

• 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.

Rinnai I-Series Condensing Boiler Solo Manual 15

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

Gather the recommended tools and parts

before starng installaon.

Items Needed

• Boiler Pump

• Pressure relief valve for domesc

hot water (150 PSI / 1,034 kPa) (as

necessary, if using a separate

indirect tank).

• 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)

Other Items You May Need

• Combuson analyzer (intended for

use with condensing boilers)

• Hand truck with fastening belt

• 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)

16 Rinnai I-Series Condensing Boiler Solo 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

• Warranty Card

• 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

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.

LIQUID PROPANE FIELD CONVERSION KIT

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

Propane Gas if needed. Contents include:

Orice

Outer Gasket Inner Gasket Conversion Rang Plate

DOCUMENTATION

Vent top with integrated

2 in. PVC and

3 in. X 5 in. Concentric

Vent Adapter

INTEGRATED ITEMS

Air Supply Filter

Refer to secon

“3.3 Components” for a

complete list of integrated

parts.

PART #:

805000096

PART #:

109000628

PART #:

807000211

Rinnai I-Series Condensing Boiler Solo Manual 17

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.

• 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.

18 Rinnai I-Series Condensing Boiler Solo Manual

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

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 beauty shops, dry cleaning stores, photo processing

labs, and storage areas for pool supplies oen contains these compounds. The boiler, venng, and

vent terminaon(s) should not be installed in any areas where the air may contain these corrosive

compounds.

Locaon Clearance

Top 2 in. (51 mm)

0 in. from vent components

Boom (Ground) 12 in. (305 mm)

Front

6 in. (152 mm)

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.

□

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.

Top

Boom

WALL

2 in. (51 mm)

Minimum

12 in. (305 mm)

Minimum

2 in. (51 mm)

Minimum

Right image is not to scale and is for illustraon

purposes only.

Side

Front

Rinnai I-Series Condensing Boiler Solo Manual 19

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.

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.

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

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.

Boiler

Right Side

Steps connued on next page.

Instrucons:

20 Rinnai I-Series Condensing Boiler Solo Manual

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).

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.

Exhaust

Port

WARNING

Top Bracket

Boom Bracket

Rinnai I-Series Condensing Boiler Solo Manual 21

• I-Series 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

according to the Naonal Fuel Gas

Code, ANSI Z223.1/NFPA 54.

• 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.

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

• 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.

22 Rinnai I-Series Condensing Boiler Solo 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.

Vent Screen

• 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.

Rinnai I-Series Condensing Boiler Solo Manual 23

4. On the PC Board, press and hold the red buon for ve seconds

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

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

3. Adjust DIP switch 8 to the ON posion.

DIP Switches

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.

WARNING

Press and Hold

Red Buon

for Five Seconds

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.

24 Rinnai I-Series Condensing Boiler Solo Manual

5. Press the Mode buon on the controller.

6. Press the (Up) or (Down) arrows unl A2-A appears in the display. Then, press the

Select buon.

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

enter normal operaon mode, press the Mode buon.

9. Replace the boiler’s front panel by reinserng the four screws that secure the panel.

7. Press the (Up) or (Down) arrows unl A2- appears in the display. Then, press the

Select buon.

01-A

A2-A

Select buon

A2-

Select buon

Rinnai I-Series Condensing Boiler Solo Manual 25

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

Exhaust

Combuson

air

Combuson

air

Exhaust

Combuson

air

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

26 Rinnai I-Series Condensing Boiler Solo 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 ()

Product

Descripon

Manufacturer

Part Number

Manufacturer

Rinnai I-Series Condensing Boiler Solo Manual 27

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

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

ECCO

DIVERSITECH

Z-FLEX

28 Rinnai I-Series Condensing Boiler Solo 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

Rinnai I-Series Condensing Boiler Solo Manual 29

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

METAL

-FAB

DURAVENT

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

ECCO

DIVERSITECH

Z-FLEX

30 Rinnai I-Series Condensing Boiler Solo 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

Terminaon

2PPS-HTPL 2 in. Twin Pipe

Terminaon

2PPS-HSTL 2 in. Single Horizontal

Terminaon

2PPS-TBL 2 in. Black UV Resistant

Tee

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

Rinnai I-Series Condensing Boiler Solo Manual 31

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

32 Rinnai I-Series Condensing Boiler Solo 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

Air Filter Screen

N/A

Tee

90° Elbow

2.5 45° Elbow

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent

Length ()

Rinnai I-Series Condensing Boiler Solo Manual 33

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 mini-

mum of two sides beneath the oor.

 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.

34 Rinnai I-Series Condensing Boiler Solo Manual

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

Vent Lengths:

65  (20 m) 150  (46 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.

12 in. (0.30 m)

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)

12 in.

(0.30 m)

60 in. (1.52 m) vercally

between terminals

Rinnai I-Series Condensing Boiler Solo Manual 35

The instrucons below apply to concentric vent sizes

2 in. x 4 in. and 3 in. x 5 in.

Concentric

Vent

Remove and discard screw from

concentric ue connecon.

Remove exhaust adapter ring (discard for

concentric venng conguraons).

Install the concentric vent. Ensure it is properly

seated.

Secure the vent pipe to the concentric ue

connecon with the supplied screw.

Horizontal Wall Terminaons

Vercal Roof

Terminaons

2 in. x 4 in.

and

3 in. x 5 in.

2 in. x 4 in.

and

3 in. x 5 in.

Install the venng terminaon according to the diagrams and instrucons in this manual. Slope the venting 1/4 in.

per foot toward the appliance according to the vent manufacturer’s installation instructions. Dispose of

condensate per local codes.

IMPORTANT

36 Rinnai I-Series Condensing Boiler Solo Manual

Twin Pipe Vercal Terminaon

of Mulple Boilers

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

Combuson

Air

Exhaust

Vent Sizes:

• 2 in. PVC

• 2 in. (60 mm) PP

• 3 in. PVC

• 3 in. (80 mm) PP

Vent Lengths: 65  (20 m) 150  (46 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

Vent length includes the addional venng, ngs

and terminaons.

Sidewall Clearances

12”

4”

Combuson Air

Intake

Exhaust

8”

Horizontal Vent and

Combuson Air Piping

Indicates area in which

intake cannot be located.

Intake

Ground/Grade/Snow Level

60 in.

(152 cm)

Min.

12 in.

(30 cm)

Min.

Intake

Exhaust

Intake

12 in.

(30 cm)

Min.

12 in.

(30 cm)

Min.

12 in.

(30 cm)

Min.

12 in.

(30 cm)

Min.

Rinnai I-Series Condensing Boiler Solo Manual 37

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.

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

Remove and discard the screw from the

combuson air vent connecon.

Remove and discard the combuson

air vent cap.

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.

Install the exhaust vent pipe. Ensure it is

properly seated.

Secure the exhaust vent pipe to the exhaust

adapter ring with the supplied screw.

Combuson Air Vent

Supplied

Exhaust Vent Pipe

Supplied

38 Rinnai I-Series Condensing Boiler Solo 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.

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

Snorkel

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC

Standard

upside down

"U" Vercal

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC

Elbow or Tee

Side Wall

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC Tee

Vercal

Terminaon

Conguraon

2 in. or 3 in.

PVC Low

Prole

Terminaon

Conguraon

This conguraon requires the use of

a Concentric Vent Terminaon.

Exhaust and

combuson air

MUST NOT be

brought

together into

a single PVC

pipe using a

pipe ng.

Exhaust

Combuson

Air

Single

Pipe

This conguraon requires the use of

a Concentric Vent Terminaon.

CAUTION

Tee not permissible

for intake

terminaon

Tee not permissible

for intake

terminaon

WARNING

Rinnai I-Series Condensing Boiler Solo Manual 39

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] *

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 mini-

mum of two sides beneath the oor.

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

requirements of the gas supplier.

40 Rinnai I-Series Condensing Boiler Solo 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

60 in.

12 in.

(0.30 m)

Inside

Corner

(1.52 m)

Vercally

between

terminals

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.

Rinnai I-Series Condensing Boiler Solo Manual 41

• 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

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.

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.

WARNING

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

65  (20 m) 150  (46 m) 50  (15 m)

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

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

42 Rinnai I-Series Condensing Boiler Solo 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 Condensing Boiler Solo Manual 43

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

WARNING

44 Rinnai I-Series Condensing Boiler Solo Manual

Remove and discard screw from combuson air

vent connecon.

Remove and discard the combuson air

vent cap.

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.

Place the vent screen inside elbow and secure

with the supplied screw. Use the vent screen for

environments where room air is dusty.

Notes:

• 2 in. vent screen supplied with boiler.

• Vent screen is available as an accessory.

Glue elbow to the combuson air PVC vent pipe

per manufacturer’s instrucons.

Install the exhaust vent pipe. Ensure it is

properly seated.

Secure the exhaust vent pipe to the exhaust

adapter ring with the supplied screw.

Combuson Air Vent Pipe

Supplied

screw

Supplied screw

Exhaust Vent Pipe

Elbow

Vent

Screen

Rinnai I-Series Condensing Boiler Solo Manual 45

2 in. or 3 in.

Schedule 40

PVC/CPVC Snorkel

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC Standard

Upside Down "U"

Vercal Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC Elbow or

Tee Side Wall

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC Tee

Vercal Terminaon

Conguraon

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.

CAUTION

4 in. B-Vent

Pipe

2 in. PP

Flex Venng

Ubbink Rolux® exible

venng approved for

vercal non-direct vent

(room air) applicaons

only. Refer to the ex

vent manual for further

details.

46 Rinnai I-Series Condensing Boiler Solo 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.

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

IMPORTANT

WARNING

Gas Shut O

Valve

Rinnai I-Series Condensing Boiler Solo Manual 47

WARNING: If you do not follow these instructions EXACTLY, a fire 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 ignition device which

automatically 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 floor because some gas is heavier than air and will settle on the floor.

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 instructions.

• If you cannot reach your gas supplier, call the fire 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 qualified service technician. Force or

attempted repair may result in a fire or explosion.

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

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 setting.

2. Turn off 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 position.

TO TURN OFF GAS TO APPLIANCE

1. STOP! Read the safety information above on this label.

2. Set the temperature controller to lowest setting.

3. Turn off all electric power to the appliance.

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

automatically 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 position.

6. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If

you smell gas, STOP! Follow “B” in the safety information 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 counterclockwise

to the ON position.

8. Turn on all electric power to the appliance.

9. Set the temperature controller to desired setting.

10. If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance”

and call your service technician or gas supplier.

OPERATING INSTRUCTIONS

FOR YOUR SAFETY READ BEFORE OPERATING

48 Rinnai I-Series Condensing Boiler Solo 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/

150,000

Btu/hr

150,000+65,000

(CFH) =

1000

215

/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

Rinnai I-Series Condensing Boiler Solo Manual 49

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/

150,000

Btu/hr

150,000+65,000

(CFH) =

1000

215



/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

150,000

Btu/hr

= Btu/hr

Total Gas

Input

215,000

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

150,000+65,000

Natural Gas

Propane (Undiluted)

50 Rinnai I-Series Condensing Boiler Solo Manual

• Purge the heang system to remove all

debris and air. Debris and air in the lines

will damage the boiler.

• 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.

Plumb the heang return line to the

heang return connecon on the

boom of the boiler.

CAUTION

• 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

• Condensate Pump Safety Switch

Wiring

Topics in this secon

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.

• 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.

Heang Return Connecon

Rinnai I-Series Condensing Boiler Solo Manual 51

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.

Plumb the heang supply line to the

heang supply connecon on the

boom of the boiler.

Heang Supply Connecon

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).

IMPORTANT

Primary/Secondary Piping

52 Rinnai I-Series Condensing Boiler Solo Manual

• 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.

• 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.

• Dirt Trap — Protects the boiler from debris in the plumbing system.

CH System Common Components Diagram

SYSTEM

RETURN

Expansion

tank

Pressure Gauge

Backow

Preventer

Fill valve with

pressure gauge

Ball Valve

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

Common CH Components Connued

Rinnai I-Series Condensing Boiler Solo Manual 53

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.

This picture illustrates a suggested

arrangement. Some of the ngs

are oponal.

LEGEND

This schemac shows an

example of a simple single zone

system with primary/secondary

piping by hydraulic separaon.

IMPORTANT

Outdoor

Sensor

Thermostat

Purge Staon

Heat Emier

Oponal Low Water Cut-O (LWCO)

54 Rinnai I-Series Condensing Boiler Solo 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.

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.

Closely Spaced Tees

Boiler Supply

Boiler Return

NOTE

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.

When Rinnai I-Series 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.

Rinnai I-Series Condensing Boiler Solo Manual 55

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).

56 Rinnai I-Series Condensing Boiler Solo Manual

The I-Series Solo 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

i060S UPS 15-42 007-IFC NRF-25 ASTRO 230CI

i090S UPS 15-42 007-IFC NRF-25 ASTRO 230CI

i120S UPS 15-58 008-IFC NRF-25 ASTRO 230CI

i150S UPS 26-99 0011-IFC N/A ASTRO 280CI

i060S and i090S

i120S and i150S

Water Flow (GPM)

Pressure Loss (Feet of Head)

Rinnai I-Series Condensing Boiler Solo Manual 57

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.

• 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

WARNING

58 Rinnai I-Series Condensing Boiler Solo Manual

• 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 1/2 in.

• 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.

• If the condensate drain pipe is closed or

stuck, the drain water will come out from

the side hole on the condensate drain pipe

connecon.

• 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 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.

• Before operaon of the boiler, the

condensate collector must be lled with

water.

CORRECT

Pipe open to

atmosphere

Pipe submerged

in water

NOT

CORRECT

Water level

Refer to neutralizer Installaon Manual

and local codes for neutralizer installaon

guidelines.

Image is for reference purposes only.

EXTERNAL TRAP

NOT REQUIRED

DO NOT

• 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.

Pipe open to

atmosphere

Neutralizer

Rinnai I-Series Condensing Boiler Solo Manual 59

IMPORTANT

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.”

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.

Cut o

crimp connectors

To Condensate Pump

Strip insulaon

o both ends

of wire

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).

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.

See visual illustraon on next page.

1/2 in.

NPT

Condensate

Drain

Boiler condensate pump safety switch is NO

(normally open) and faults when the circuit

closes.

IMPORTANT

60 Rinnai I-Series Condensing Boiler Solo Manual

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 Condensing Boiler Solo Manual 61

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

62 Rinnai I-Series Condensing Boiler Solo Manual

NOTE

When DIP Switch 3 is in the OFF (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 four 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. Locate the DIP switches on the PC Board (see below). Ensure that DIP switch 3 is in the OFF

(default) posion (this ensures the boiler will operate the indirect tank recirculaon pump

connected to the Pump 2 connecon).

5. Adjust DIP switch 4 to one of the following:

• OFF (default) for thermistor control of the indirect tank

• ON for thermostat control on the indirect tank

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

more informaon).

Indirect Tank Thermistor Connecon

Board

DIP Switches

OFF

Indirect Tank

Thermistor Connecon

Indirect Tank Pump

Connecon

Indirect tank pump

to be wired to boiler.

• Refer to secon “9.2 Electrical Connecons” for more informaon on the boiler’s electrical connecons.

• Refer to secon “12.3.8 PC Board DIP Switches” for more informaon on the boiler’s DIP switches.

Rinnai I-Series Condensing Boiler Solo Manual 63

Indirect Tank Thermostat Connecon

PC Board

DIP Switches

OFF

Indirect Tank Pump

Connecon

Indirect Tank

Thermostat Connecon

Indirect tank pump

to be wired to boiler.

64 Rinnai I-Series Condensing Boiler Solo 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 DIP Switch 3 is in the OFF (default)

posion, 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 DIP Switch 3 is in the OFF (default)

posion, 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

Refer to secon “12.3.8 PC Board DIP

Switches” for more informaon on boiler

DIP switches.

Rinnai I-Series Condensing Boiler Solo Manual 65

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.

66 Rinnai I-Series Condensing Boiler Solo 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

Rinnai I-Series Condensing Boiler Solo Manual 67

IMPORTANT

• Do not use an extension cord or

adapter plug with the boiler.

• If an external electrical source is

ulized, the boiler, when installed,

must be electrically bonded to

ground in accordance with the

requirements of the authority having

jurisdicon or, in the absence of

such requirements, with the

Naonal Electrical Code, ANSI/NFPA

70, and/or the Canadian Electrical

Code Part I, CSA C22.1, Electrical

Code.

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.

• 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.

CAUTION

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

WARNING

68 Rinnai I-Series Condensing Boiler Solo Manual

Devices such as the room thermostat and outdoor temperature sensor are connected to the boiler

PC Board.

□

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.

PC Board

• 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 the proper diameter and size of wiring.

CAUTION

❼

❻

❹

❺

❽

❸

❷

❶

Item Connecon Item Note

Boiler Pump 120 VAC, Max 2.0 A

External Pump Connecon 2/

Indirect Pump

120 VAC, Max 2.0 A

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

T/T 1 Connecon

T/T 2 Connecon/Indirect

Tank Thermostat Connecon

LWCO (High Limit or Other

Safety Switch)

Included Jumper

from Factory

Outdoor Temperature Sensor

Indirect Tank Thermistor

24V AC for External Output Max 0.7 A

❶

❷

❸

❹

❺

❻

❼

❽

❾

Rinnai I-Series Condensing Boiler Solo Manual 69

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 Boilers is accessible online at

www.trainingevents.rinnai.us.

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

WARNING

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.

70 Rinnai I-Series Condensing Boiler Solo Manual

You Will Need:

• Philips head screwdriver

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

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

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

4. 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.

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

resume normal operaon mode.

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

properly.

7. 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.

DIP Switches

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

Indirect Tank 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 top, le black buon shown below.

The Maintenance Required icon (see right image) on the controller

display will appear and iniate the deaeraon process.

PC Board

Maintenance

Required icon

Rinnai I-Series Condensing Boiler Solo Manual 71

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 top, le black buon on the PC Board

(shown below).

DIP Switches

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 Required icon

(see right image) appears on the controller display.

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.

PC Board

WARNING

72 Rinnai I-Series Condensing Boiler Solo 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 Condensing Boiler Solo Manual 73

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?

 

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?

 

Did you verify the heang system PRV is rated to 30 PSI?

 

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 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?

 

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

grounded circuit?

 

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

 

COMMISSIONING YES NO

Was the boiler lled to 17-26 PSI?

 

Was the deaeraon process performed on the boiler?

 

74 Rinnai I-Series Condensing Boiler Solo 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

• Diagnosc Codes

• Forced Hi/Lo Fire Modes

Rinnai I-Series Condensing Boiler Solo Manual 75

❶

❷

❸

❹

❺

❻

❼

MODE

Eco

❽

MODE

Selects various

boiler sengs.

Up/Down

Arrows

Scrolls through

available menu

opons including

adjusng the

temperature.

Central Heang

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.

Indirect Tank On

Press to run the boiler in

DHW with Indirect Tank

mode.

Switching Operaon Mode

Press to switch between

DHW (Indirect Tank) and

CH for temperature seng.

Select Buon

Press to select the opon

in the display window.

❶

❷

❸

❹

❻

❼

Display Window

Displays boiler status

informaon.

See Display Window

secon for more

informaon.

❽

❺

Eco

Selects Eco or

Comfort

operaon mode.

❾

❿

❾

❿

CH Buon LED

When the LED light above

the CH buon is

illuminated, CH mode is

acve.

Indirect Tank Buon LED

When the LED light above

the Indirect Tank buon is

illuminated, Indirect Tank

mode is acve.

76 Rinnai I-Series Condensing Boiler Solo Manual

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

❶

❷

❸

❼

❽

❾

❺

❻

❿

❹

Central Heang Mode 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.

Outdoor Temperature Sensor

Connected

❶

❷

❸

❹

❺

❻

Freeze Protecon Acve

Eco Seng Acve

(When no icon is present, Comfort

Mode is acve.)

Indirect Tank

Blinking: Operaon is occurring.

Light is On: Indirect Tank temperature

is sased.

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

running)

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

Rinnai I-Series Condensing Boiler Solo Manual 77

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 Select buon

to conrm the

temperature.

This temperature seng

is displayed for a few

seconds and then returns

to standby mode.

Press the Switch

Operaon Mode buon

unl the Central Heang

Acve buon appears on

the home screen.

MODE

Eco

PSI

Adjust the temperature

with the Up or Down

arrows unl the

appropriate temperature

is displayed.

MODE

Eco

140

°F

MODE

Eco

180

°F

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 “d” (Curve 4).

78 Rinnai I-Series Condensing Boiler Solo 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 LED above the Indirect Tank

buon is not illuminated, press the

Indirect Tank buon.

If the LED above the Indirect Tank

buon is illuminated, proceed to

Step 2.

Adjust the temperature with the Up

or Down arrows unl the

appropriate temperature is

displayed.

MODE

Eco

PSI

MODE

Eco

140

°F

MODE

Eco

120

°F

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 Indirect Tank icon

appears on the home screen.

MODE

Eco

PSI

Press the Select buon to conrm the

temperature. The setpoint temperature

displays for a few seconds and then

returns to standby mode.

LED

Rinnai I-Series Condensing Boiler Solo Manual 79

MODE

Eco

MODE

Eco

Eco Mode (Default)

The Eco icon will illuminate

when Eco Mode is acve.

Central Heang Eco mode is a gas saving funcon available on the I-Series 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.

Comfort Mode

The Eco icon will not illuminate

when Comfort Mode is acve.

No Icon

80 Rinnai I-Series Condensing Boiler Solo 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.

MODE

Eco

MODE

Eco

Press the Up or Down arrows to

select a unit.

• F = U.S. Measurements (°F/PSI)

• C = Metric (°C/bar)

Press the Mode buon.

1: F

Press the Select buon.

1:F

MODE

Eco

Press the Mode buon

twice. 2:on should appear

on the display. Press the Up

or Down arrows to select

ON or OFF.

2: on

MODE

Eco

Press the Select buon.

2: OFF

MODE

Eco

Rinnai I-Series Condensing Boiler Solo Manual 81

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

• 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

DIP switch 2 is set to the ON posion. See secon “12.3.8 PC Board DIP Switches” 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

MODE

Eco

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

3: off

MODE

Eco

3:loc

Press the Select buon.

MODE

Eco

LOC

82 Rinnai I-Series Condensing Boiler Solo Manual

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

MODE

Eco

MODE

Eco

MODE

Eco

MODE

Eco

MODE

Eco

While connuing to hold

the (Down) buon,

press and hold the

Indirect Tank 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

Indirect Tank buon (press and hold

both buons down at the same

me).

120

°F

no. 01

no. 04

120

The data for the

performance number

automacally appears

in the display.

Rinnai I-Series Condensing Boiler Solo Manual 83

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

informaon.

Unit of measurement (°F/°C, PSI/bar) will vary depending on unit of measure selecon.

IMPORTANT

# 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 (Pump 1) 0=OFF, 1=ON

Pump for Indirect Tank (Pump 2) 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

84 Rinnai I-Series Condensing Boiler Solo Manual

Item # PC Board Switch # Primary Funcon Notes

1 Buon 1 Forced Hi/Low Fire

Modes

Refer to secon “12.7 Forced Hi/Low Fire

Modes”

2 Buon 2 Deaeraon Mode

Refer to secon “10. Commissioning”

3 Buon 3 Data Transfer Mode This is for transferring PCB data when

replacing the PCB. Refer to the instrucons

included in the replacement parts.

4 Buon 4

(Red Buon)

Parameter Sengs

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

5 Dip Switch Dip Switch Sengs

Refer to secon “12.3.8 PC Board DIP

Switches”

DIP Switches

❷

❸

❹

❶

❺

PC Board

Rinnai I-Series Condensing Boiler Solo Manual 85

DIP

Switch #

Funcon Descripon OFF (Default) ON

1 Outdoor

Temperature Sensor

Enables or Disables the

Outdoor Temperature

Sensor

Outdoor

Temperature

Sensor in Use

Outdoor

Temperature

Sensor Not in

Use

2 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

3 Indirect Tank Enables the Indirect Tank

Funcon for Pump 2

(Pump 2 Operates

as an Indirect Tank

Pump)

OFF (Pump 2

Operates at a CH

Zone Pump)

4 Indirect Tank

Thermistor/

Thermostat Selecon

Selects the method of

controlling the indirect

tank

Thermistor Thermostat

5 Gas Valve Solenoid Shuts down the

integrated solenoid gas

valve manually

Normal Operaon Fixed Closed

(prevents boiler

operaon)

6 Altude Seng

Depends on Altude

(See secon “12.3.9 Altude” for

specic values)

Sets the appropriate

elevaon of the boiler

installaon

7 Altude Seng

8 Vent Type Selecon

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

seng may be adjusted.

See secon “5.4 PVC

Venng Safety Switch” for

more informaon.

PVC

Higher

Temperature

Exhaust Vent

Material (PP,

CPVC, or

Stainless Steel)

86 Rinnai I-Series Condensing Boiler Solo Manual

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

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

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

3. Locate the DIP switches on the PC Board (see below).

4. Adjust DIP switches 6 and 7 to on or o based on the altude sengs in the table below.

ALTITUDE DIP

Switch 6

DIP

Switch 7

0-2,000  (0-610 m) (Default) OFF OFF

2,001-5,400  (610-1,646 m) ON OFF

5,401-7,700  (1,646-2,347 m) OFF ON

7,701-10,200  (2,347-3,109 m) ON ON

When a DIP switch is adjusted, it is not necessary to adjust the gas pressure

seng for high altude.

IMPORTANT

DIP Switches

PC Board

OFF

Rinnai I-Series Condensing Boiler Solo Manual 87

Thermostat Usage (Default Seng)

This is the default seng for the boiler. This seng enables the boiler to operate in CH from a call

for heat from the room thermostat or zone controller. In this seng, the Central Heang buon is

not funconal except as an Error Reset or other seng.

This seng enables the boiler to operate via the Central Heang buon being acve

(illuminated). While the Central Heang buon is ON, the boiler operates

connuously or unl the return sensor on the boiler gives the signal to cycle o. The

burner res up only when supply or return water temperature reduces. This seng

should be disabled when CH is no longer seasonally needed.

To select Thermostat Usage or the Central Heang buon, follow the steps below:

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

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

(see below).

3. Adjust DIP switch 2 to one of the following posions

• ON - Central Heang ON buon used. Boiler res based on return water temperature

• OFF (Default) - Thermostat Used

4. Press the CH buon on the controller display. The boiler is now in CH mode.

OFF

DIP Switches

PC Board

Pump Linkage with CH Mode On

When CH Mode is acve, Parameter 41 becomes available. Parameter 41 enables a system pump to

be linked with the boiler pump. When Parameter 41 is selected as “b,” the two pumps will run at the

same me.

Parameter

Number

Seng Descripon

Selecon

A b

Linked Operaon Between Main Boiler Pump and CH Pump 1

Yes (Linked

Together)

This parameter is only in use when DIP switch 2 is in the ON

posion. 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. When DIP switch 2 is in the

OFF posion, the pumps are automacally linked.

Central Heang

buon

Central Heang Buon

IMPORTANT

Central Heang Mode on the I-Series Boiler is not designed for typical room thermostat control

systems. Central Heang Mode runs the pump(s) and heat constantly and ignores room thermostat

input. This mode may/will overheat zones not equipped with constant recirculaon temperature

control (such as thermostac heads).

88 Rinnai I-Series Condensing Boiler Solo Manual

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

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

3. Locate the red buon on the PC Board.

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

5. Press the Mode buon on the controller.

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 either the red buon on

the PC Board or the Mode buon on the controller.

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

the selecon for the seng number (such as 30-A or

30-b).

Then, press the Select buon.

Press and Hold

Red Buon

for Five Seconds

PC Board

01-A

30-A

30-

Rinnai I-Series Condensing Boiler Solo Manual 89

Parameter

Number

Seng Descripon

Selecon

A b C d

Pressure Indicaon on the Control Panel

Yes No

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."

Outdoor Reset Curve

Curve

This parameter is available when Dip Switch 1 is

in the OFF (default) posion. Select the proper

curve from below. See secon “12.5 Outdoor

Reset Control” for more informaon.

Curve 1: Standard baseboard, high eciency air

handler, cast iron or panel radiators.

Curve 2: Staple up radiant.

Curve 3: High temperature air handler or

undersized baseboard.

Curve 4: Custom curve based on customer

input.

Boost

Minutes

This parameter is available when Dip Switch 1 is

in the OFF (default) posion.

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.

Maximum Outdoor Temperature the Boiler will

Fire in CH Mode

Maximum

77°F

(25°C)

This parameter is available when DIP switch 1 is

in the OFF (default) posion.

This sets the maximum outdoor temperature

the boiler will re in CH mode. This can prevent

the boiler from ring in warm outdoor

temperatures.

Connued on next page

90 Rinnai I-Series Condensing Boiler Solo Manual

Parameter

Number

Seng Descripon

Selecon

A b C d

Indirect Tank Supply Temperature with

Thermostat Control

180°F

(82°C)

160°F

(71°C)

140°F

(60°C)

*This parameters is available when Indirect

Tank "In Use" is selected on DIP switch 3 and

when Indirect Tank Control "Thermostat"

selected on DIP switch 4.

This 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.

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)

*This parameters is available when Indirect

Tank "In Use" is selected on DIP switch 3 and

when Indirect Tank Control "Thermistor"

selected on DIP switch 4.

This 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.

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)

*This parameters is available when Indirect

Tank "In Use" is selected on DIP switch 3 and

when Indirect Tank Control "Thermistor"

selected on DIP switch 4.

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.

Connued on next page

Rinnai I-Series Condensing Boiler Solo Manual 91

Parameter

Number

Seng Descripon

Selecon

A b C d

Indirect Tank Operaon Opon

Use Pump

Use 3-Way

Valve

*This parameters is available when Indirect

Tank "In Use" is selected on DIP switch 3. 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.

Indirect Tank Simultaneous Heang

Indirect

Tank

Priority

Simultaneous

Heang with

Indirect Tank

and CH

*This parameters is available when Indirect

Tank "In Use" is selected on DIP switch 3 and

when "Use Pump" is selected in Parameter 32.

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 Time

minutes

*This parameters is available when Indirect

Tank "In Use" is selected on DIP switch 3. 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 priority will

begin again.

CH Temperature Limitaon to Allow

Simultaneous Operaon with Indirect Tank

Yes No

*This parameters is available when Indirect

Tank "In Use" is selected on DIP switch 3 and

when "Use Pump" is selected in Parameter 32

and also when selecng "Simultaneous Heang

with Indirect Tank and CH" in Parameter 33.

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.

92 Rinnai I-Series Condensing Boiler Solo Manual

Parameter

Number

Seng Descripon

Selecon

A b C d

Linked Operaon Between CH Pump 1 and 2

Yes (Linked

Together)

This parameter enables linked operaon

between the CH Pump 1 and 2. For example,

when 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.

When it is desired to ulize DHW Recirculaon

via DIP switch 3, this parameter will not be

available. The DIP switch must be in the OFF

(default) posion for this parameter to be

enabled.

This seng is primarily for an applicaon that

requires two pumps for one zone, such as in use

with an injecon loop or similar system.

Linked Operaon Between Main Boiler Pump

and CH Pump 1

Yes (Linked

Together)

This parameter is only in use when DIP switch 2

is in the ON posion.

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.

When DIP switch 2 is in the OFF posion, the

pumps are automacally linked.

Main Pump Runs When the Target Temperature

is Achieved

Connuously Intervals

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.

External Pump Runs When the Setpoint

Temperature is Achieved

Same as Main

Pump

Does Not

Run

This selects the mode of the external pump(s)

running when the target setpoint is achieved.

This seng is for whether stopping the external

pump from running to reduce pump operaon

me or it operates the same as the main pump

to enable remaining heat from the heat

exchanger to be delivered to the system.

External Pump Runs When Freeze Protecon is

in Operaon

Does Not Run Same as Main

Pump

(if selected,

hydraulic

separaon is

needed)

This selects how the external pump operates

when freeze protecon is in operaon. This

selects whether the pump will run to reduce the

pumps operaon me or operang the same as

the main pump to enable the boiler to deliver

the remaining heat to the system. The

temperature water being delivered to the

system may not be as warm as desired with this

seng ON.

Rinnai I-Series Condensing Boiler Solo Manual 93

Parameter

Number

Seng Descripon

Selecon

A b C d

Freeze Protecon Level

Default

When boiler

is installed in

a Warm

Room

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.

The Dierenal Temperature from Ceasing Fire

to Firing Again

Normal Quick

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.

CH Seng Temperature Temperature Drop

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

86-166°F (30-74°C)

15°F (8°C) 9°F (5°C)

The Time Which the Boiler is not Allowed to Fire

Again for CH

Normal

(3 Minutes)

Quick

(10 Seconds)

This selects the me which the boiler will not be

able to re again for CH aer the burner has

shutdown. This seng is to prevent frequent ON/

OFF operaon.

Heang Eco Mode On Time

30 Minutes 15 Minutes

The 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.

Will the boiler shut down on a high return water

temperature

Yes No

This seng is for whether the boiler will shut

down at high return water temperatures. This is

to decrease the o cycle me even though the

return water temperature is warm.

Not Available

Gas Type

Natural

Gas

Liquid

Propane

For selecng gas type when conducng gas

conversion.

Not Available

Vent Material Used

PVC

Material

other than

PVC:

CPVC/PP/

Other

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.

94 Rinnai I-Series Condensing Boiler Solo 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 four 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.

Rinnai I-Series Condensing Boiler Solo Manual 95

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

Hydronic Air Handler 120 - 140°F 140 - 180°F

Unit Heater 130 - 140°F 160 - 180°F

Base Board Convectors 100 - 140°F 140 - 180°F

Cast Iron/Panel Radiator 90 - 120°F 140 - 180°F

Undermount Radiant 100 -120°F 120 - 150°F

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 are necessary, a mixing valve may be needed in the system.

1. Remove the boiler’s front panel by removing the four 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. Locate the DIP switches on the PC Board (see below). Ensure that DIP switch 1 is in the OFF (Default)

posion (this ensures the boiler will operate based on the outdoor temperature).

5. Set parameters 01 - 03 as appropriate for your applicaon (see Parameter Sengs Table for more

informaon).

Outdoor

Temperature Sensor

OFF

DIP switch 1 in OFF (Default) posion

PC Board

IMPORTANT

If DIP switch 1 is set to the OFF (default) posion, 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.

96 Rinnai I-Series Condensing Boiler Solo 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, cast

iron or 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 Seng temperature on the

controller

Seng temperature on the

controller - 36°F (20°C)

Custom curve based on

customer input (see graph

on next page)

The boiler has four 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.

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)

100°F

(38°C)

180°F

(82°C)

140°F

(60°C)

140°F

(60°C)

122°F

(50°C)

104°F

(40°C)

14°F

(-10°C)

68°F

(20°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)

Rinnai I-Series Condensing Boiler Solo Manual 97

Curve 4 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 4

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

01 Outdoor reset curve 1 2 3 4

Select Reset Curve

130°F

(54°C)

86°F (30°C) Minimum

Temperature

114°F

(46°C)

94°F

(34°C)

134°F

(57°C)

68°F

(20°C)

14°F

(-10°C)

170°F

(77°C)

150°F

(66°C)

110°F

(43°C)

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

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)

100°F

(38°C)

90°F

(32°C)

80°F

(27°C)

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

86°F

(30°C)

98 Rinnai I-Series Condensing Boiler Solo 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, and supply temperature is 140°F. When the boiler

connues operang with ring for 30 minutes, the target supply temperature will rise toward 180°F.

This control connues unl shut down.

100

120

140

160

180

200

0 10 20 30 40 50 60 70 80

0°F

(-18°C)

20°F

(-7°C)

40°F

(4°C)

80°F

(27°C)

Outdoor Temperature

Supply Temperature

Example

180°F

(82°C)

140°F

(60°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)

Rinnai I-Series Condensing Boiler Solo Manual 99

Display Diagnosc Codes

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

1. Press and hold the Indirect Tank 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 Indirect

Tank buon for two seconds, and then the

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

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.

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

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

the Indirect Tank buon on the control panel will be

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

Diagnosc Codes

IMPORTANT

Some diagnosc codes may not reset by pressing

the CH or Indirect Tank buons. If this is the case,

contact your service provider for troubleshoong

assistance.

1:100

e:100

WARNING

100 Rinnai I-Series Condensing Boiler Solo Manual

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.

• Ensure the parameter A0 corresponds to

the gas type the unit is installed in.

• Ensure the gas orice is the proper

orice for the gas type in use.

• Ensure deaeraon has been performed.

150 Venturi Control

• Venturi operaon error.

• Ensure the venturi motor is operang

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.

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

181

Indirect Tank Temperature

• Indirect tank runs for more than six hours

without cycling o.

• Ensure the tank size is adequate.

• Check the thermistor locaon.

• Ensure the system is plumbed properly.

• Check the supply temperature for tank is

higher than tank seng temperature

(Parameter 30).

• Check sensor wiring for damage.

• Measure resistance of sensor.*

• Replace sensor if necessary.

190

Electrical Grounding

• Secondary circuit ground fault.

• Check all electrical components for

electrical short.

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.

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.

371

Indirect Tank Thermistor

• Ensure DIP switch 4 is set to the

appropriate seng.

• 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.

Rinnai I-Series Condensing Boiler Solo Manual 101

540

High Exhaust Temperature

• 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.

• 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.

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.

• 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.

* See “Electrical Diagnoscs” on Technical Data

Sheet located on inside front cover of boiler.

363

Return Thermistor

• Check sensor wiring for damage.

• Measure the resistance of the sensor.

• Replace if necessary.

393 Outdoor Thermistor

• Ensure that DIP switch 1 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.

• Ensure deaeraon has been

performed.

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 VAC on the

PCB. If it is not, check the transformer

harness and output of the transformer.

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.

102 Rinnai I-Series Condensing Boiler Solo Manual

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.

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 and holding the Up buon,

then press and hold the Down buon,

and then press the Indirect Tank buon

simultaneously. FFF will appear on the

display.

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.

Code

Boiler does not start heang the indirect

tank, although the indirect tank is calling for

heat

• Aer the tank priority me (Parameter

34) passes, the boiler will be in heang

priority for 60 minutes.

Code

The boiler does not operate with the CH

seng buon

• If DIP switch 2 is OFF, CH operaon will

operate via the room thermostat.

* See “Electrical Diagnoscs” on Technical

Data Sheet located on inside front cover of

boiler.

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 an Indirect Tank and CH, the

supply temperature for CH is

based on Indirect Tank control.

Code

CH capacity is insucient

• Ensure the parameters are

properly set for the installaon.

• During simultaneous operaon

of an Indirect Tank and CH, ow

volume to heang can be

reduced.

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.

Up and Down

Press the

Indirect Tank

buon

E;FFF

Rinnai I-Series Condensing Boiler Solo Manual 103

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 four 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).

DIP Switches

Buon

PC Board

WARNING

104 Rinnai I-Series Condensing Boiler Solo 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 Shut O

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 17-26 psi (117-180

kPa).

WARNING

Rinnai I-Series Condensing Boiler Solo Manual 105

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.

WARNING

106 Rinnai I-Series Condensing Boiler Solo Manual

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.

Rinnai I-Series Condensing Boiler Solo Manual 107

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

YELLOW OR GREEN 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.

When freeze

protecon is

acve, this icon will

be illuminated.

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

ambient temperature.

When freeze protecon is in operaon, the

pump may circulate water and/or the boiler

may dry re 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.

When the system needs to be shutdown for

extended periods of me, the power and gas

supply should be disconnected from the boiler.

The boiler and all system piping should then be

drained. 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.

PSI

108 Rinnai I-Series Condensing Boiler Solo Manual

4. Place the boiler in operaon by a call for heat.

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.

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 ame rod (located on front of the boiler under the burner).

7. Replace the boiler front panel.

8. The boiler may now go back into normal operaon.

Do not touch the inside of the wiring connecon while it is disconnected.

WARNING

Boiler front side

Remove wiring

connecon

Burner

Flame Rod

Rinnai I-Series Condensing Boiler Solo Manual 109

Approved System Cleaners:

• Fernox F3 Cleaner

• Noble Noburst Hydronic System Cleaner

• Rhomar Hydro-Solv 9100

• Sennel X400

Approved System Inhibitors:

• Noble Noburst AL Inhibitor

• Rhomar Pro-tek 922

• Sennel X100

Approved System Anfreezes:

• Chem Frost 100%

• Fernox Alphi 11

• Hall-Chem Solar II

• Noble Noburst AL

• Rechochem Recofreeze AL

• Rhomar RhoGard Mutli-Metal (AL safe)

• Sennel X500

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.

110 Rinnai I-Series Condensing Boiler Solo Manual

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.

The Rinnai boiler must be isolated from the

system while the system is ushed. No

system cleaner should ever enter the boiler

heat exchanger due to its causc nature

which could damage the heat exchanger.

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.

Instrucons

1. Flush the CH system with water.

2. Isolate the boiler from the CH system.

3. Fill the CH system with an approved

cleaner and circulate through the system.

4. If the installaon is a zone system (ulizes

mulple zones), ush out each zone

individually.

5. Flush the CH system with water again,

ensuring all zones have been ushed.

6. Clean out the dirt trap per manufacture’s

instrucons.

7. The boiler and system may now be lled

through the ll valves.

8. If using glycol, ensure it is an approved

glycol and rao.

9. Verify water quality is within the stated

values in secon “4.4.1 Water Quality

Guidelines.”

IMPORTANT

• Water should be within guidelines for

water quality listed in secon “4.4.1

Water Quality Guidelines.”

• Use the proper water treatment to

ensure the pH and water hardness are

within the Rinnai boiler water quality

guidelines listed in secon “4.4.1 Water

Quality Guidelines.”

• Test the pH of the water that will be

used for lling the system.

Rinnai I-Series Condensing Boiler Solo Manual 111

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on in the Appendix: “14.7 CH

Pressure Drop and Flow Curve”

This picture illustrates a suggested

arrangement. Some of the ngs

are oponal.

Radiator with

Thermostatic

Heads

112 Rinnai I-Series Condensing Boiler Solo Manual

Pump

Thermostat

PC Board Wiring

for the above

applicaon example

External pump

connecon 1

T/T 1 Connecon

Boiler

Pump

Boiler Pump

Connecon

Rinnai I-Series Condensing Boiler Solo Manual 113

Zone Control

Thermostat 1

Pump Thermostat 2

PC Board Wiring

for the above

applicaon example

T/T 1 Connecon

Boiler

Pump

Boiler Pump

Connecon

114 Rinnai I-Series Condensing Boiler Solo Manual

Thermostat 2

Pump 1

Thermostat

PC Board Wiring

for the above

applicaon example

External pump

connecon 1

T/T 1 Connecon

T/T 2

Connecon

Boiler

Pump

Boiler Pump

Connecon

Pump 2

External pump

connecon 2

Rinnai I-Series Condensing Boiler Solo Manual 115

Zone Control

Pump 1

Pump 2 Pump 3

Thermostat 1 Thermostat 2 Thermostat 3

Wires To End Switch on

Zone Controller

PC Board Wiring

for the above

applicaon example

T/T 1 Connecon

Boiler

Pump

Boiler Pump

Connecon

116 Rinnai I-Series Condensing Boiler Solo Manual

Pump 1

External pump connecon 1

For this applicaon, ensure

Parameter 41 is set to “b”

for linked operaon

between the main boiler

pump and CH pump 1.

PC Board Wiring

for the above

applicaon example

Boiler

Pump

Boiler Pump

Connecon

Note: Heat emier must be

radiator with thermostac

heads.

Rinnai I-Series Condensing Boiler Solo Manual 117

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.

CAUTION

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.

CAUTION

Do not touch the areas at or near the heat

exchanger or hot water lines. These areas

become very hot and could cause burns.

CAUTION

• 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.

WARNING

• Orice

• Conversion Rang Plate

• Phillips Head Screwdriver (eld-supplied)

118 Rinnai I-Series Condensing Boiler Solo Manual

1. Conrm that the inlet gas pressure is between the minimum and maximum pressures allowed

for this boiler.

2. Disconnect electrical power to the boiler.

3. Turn o the boiler’s gas supply by turning o the gas control valve.

4. Remove the boiler’s front panel by removing the four screws that secure the panel.

5. Locate the orice cover plate on top poron of gas valve (Figure 1).

6. Remove the three screws securing the orice cover plate (Figure 1).

7. Remove the plasc orice from the housing (Figure 2).

8. Install the new inner and outer gaskets onto the new orice (Figure 2).

9. Install new orice into housing (check the gas type displayed on the orice: Red orice is LPG; Blue

orice is NG).

10. Conrm gasket is correctly in place (the groove side of gasket must be facing outwards) (Figure 2).

11. Reinstall the orice cover plate using the three screws to secure it to the gas valve.

12. Turn on the power and gas. Inspect for gas leaks.

13. Proceed to the next secon (14.4.3 Adjust Parameter Sengs).

Figure 1

Orice

Cover

Plate

Three screws

Grooved side of outer gasket MUST face outwards.

Cover

Plate

Inner

Gasket

Orice

Outer

Gasket

Figure 2

Rinnai I-Series Condensing Boiler Solo Manual 119

1. Locate the PC Board (lower le side of unit) (Figure 3).

2. Locate the red buon on the PC Board (Figure 3).

3. Press and hold the red buon for ve seconds (Figure 3).

Figure 3

4. Press the Mode buon on the controller.

5. Scroll to parameter AO and press the

Select buon.

6. 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.

7. Parameter sengs are complete. To enter normal operaon mode, press the Mode buon.

Press and Hold

Red Buon

for Five Seconds

NATURAL GAS

PROPANE

PC Board

01-a

A0-a

A0-

120 Rinnai I-Series Condensing Boiler Solo Manual

3. Reinstall the boiler front panel using the four 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 (Figure 4).

SATISFACTORY

Front View

Blue Flame

UNSATISFACTORY

Flame

Rod

Flame

Rod

Yellow or

Green Flame

Figure 4

WARNING

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 four 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 “12.7 Forced Hi/Lo 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

Rinnai I-Series Condensing Boiler Solo Manual 121

122 Rinnai I-Series Condensing Boiler Solo Manual

Rinnai I-Series Condensing Boiler Solo Manual 123

i060S and i090S

i120S and i150S

Water Flow (GPM)

Pressure Loss (Feet of Head)

124 Rinnai I-Series Condensing Boiler Solo 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.

Rinnai I-Series Condensing Boiler Solo Manual 125

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.

126 Rinnai I-Series Condensing Boiler Solo 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 Boiler Models

Boiler Models:

• Combi: i060C, i090C, i120C

• Solo: i060S, i090S, i120S, i150S

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.

Rinnai I-Series Condensing Boiler Solo Manual 127

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

800000112(01)

05/2020

Rinnai RUR199EN

Product's Documents

VERSION 5 UBBINK INSTRUCTIONS FOR FLEX VENT KIT

Specifications

Rinnai RUR199EN Questions and Answers