●
H167-0771-2X01(00)
2 Rinnai I-Series Condensing Boiler Solo Manual
If the informaon in these instrucons 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 instrucons.
− If you cannot reach your gas supplier, call the re department.
• Installaon and service must be performed by a qualied installer, service agency or the gas supplier.
WARNING
1. Welcome ................................................................................................................................................... 4
2. Safety ........................................................................................................................................................ 5
2.1 Safety Symbols ................................................................................................................................................. 5
2.2 Safety Precauons ........................................................................................................................................... 5
3. About the Boiler ........................................................................................................................................ 7
3.1 Front View ........................................................................................................................................................ 7
3.2 Boom View .................................................................................................................................................... 7
3.3 Components ..................................................................................................................................................... 9
3.4 Specicaons ................................................................................................................................................. 10
3.5 Dimensions..................................................................................................................................................... 11
3.6 Accessories ..................................................................................................................................................... 13
4. Installaon .............................................................................................................................................. 14
4.1 Installaon Guidelines ................................................................................................................................... 14
4.2 What You’ll Need ........................................................................................................................................... 15
4.3 Items Included ............................................................................................................................................... 16
4.4 Choose an Installaon Locaon ..................................................................................................................... 17
4.5 Mount the Boiler to the Wall ......................................................................................................................... 19
4.6 Fill the Condensate Collector ......................................................................................................................... 20
5. Venng ................................................................................................................................................... 21
5.1 Guidelines ...................................................................................................................................................... 21
5.2 Venng Installaon Sequence ....................................................................................................................... 22
5.3 Terminaon Consideraons........................................................................................................................... 22
5.4 PVC Venng Safety Switch ............................................................................................................................. 23
5.5 Venng Opons ............................................................................................................................................. 25
6. Gas Supply............................................................................................................................................... 46
6.1 Connect the Gas Supply ................................................................................................................................. 46
6.2 Gas Operang Instrucons ............................................................................................................................ 47
6.3 Gas Pipe Sizing Reference Tables ................................................................................................................... 48
7. CH System Piping ..................................................................................................................................... 50
7.1 Guidelines ...................................................................................................................................................... 50
7.2 Instrucons .................................................................................................................................................... 50
7.3 Common CH Components ............................................................................................................................. 51
7.4 Piping Diagram for a Basic CH System (With Hydraulic Separaon) ............................................................. 53
7.5 Hydraulic Separaon ...................................................................................................................................... 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 Opons ....................................................................................................................... 61
8.3 Indirect Tank Electrical Connecons ............................................................................................................. 62
8.4 Simultaneous CH and DHW Operaon .......................................................................................................... 64
8.5 Indirect Tank Parameter Sengs .................................................................................................................. 65
8.6 Piping Diagram for a Basic DHW Installaon ................................................................................................. 66
9. Power Supply ........................................................................................................................................... 67
9.1 Guidelines ...................................................................................................................................................... 67
9.2 Electrical Connecons ................................................................................................................................... 68
9.3 Post-Power Supply Connecon Checklist ...................................................................................................... 68
10. Commissioning ....................................................................................................................................... 69
10.1 Safety Precauons ....................................................................................................................................... 69
10.2 Filling Process .............................................................................................................................................. 69
10.3 Deaeraon Process ...................................................................................................................................... 70
11. Post-Installaon Checklist ...................................................................................................................... 72
12. Operaon .............................................................................................................................................. 74
12.1 Start-Up Informaon ................................................................................................................................... 74
12.2 Control Panel ............................................................................................................................................... 75
12.3 Basic Operaon Sengs .............................................................................................................................. 77
12.4 Parameter Sengs ...................................................................................................................................... 88
12.5 Outdoor Reset Control ................................................................................................................................ 94
12.6 Diagnosc 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 Ignion Safety Shut O Device .................................................................................................... 108
14. Appendices .......................................................................................................................................... 109
14.1 Approved Cleaners, Inhibitors and Anfreezes ........................................................................................ 109
14.2 Flush the CH Plumbing System ................................................................................................................. 110
14.3 System Applicaon 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 Massachuses State Gas Regulaons ...................................................................................................... 125
14.10 Warranty .................................................................................................................................................. 126
4 Rinnai I-Series Condensing Boiler Solo Manual
Thank you for purchasing a Rinnai Condensing
Boiler. Before installing and operang this
boiler, be sure to read these instrucons
completely and carefully to familiarize
yourself with the boiler’s features and
funconality.
• You must read the enre manual to
properly operate the boiler.
• Keep this manual for future reference.
• As when using any appliance generang
heat, there are certain safety precauons
you should follow. See secon “2.2 Safety
Precauons” for detailed safety
precauons.
• Be sure your boiler is installed by a
licensed installer.
• If installing in the state of Massachuses,
read secon “14.9 Massachuses State
Gas Regulaons” in this manual.
ANSI
American Naonal Standards
Instute
Btu Brish Thermal Unit
CH Central Heang
SOLO
Heang only boiler capable of
DHW through an indirect tank
DHW Domesc 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
1
• A trained and qualied professional
must install the boiler, inspect it, and
leak test it before use. The warranty
will be voided due to any improper
installaon.
• The trained and qualied professional
should have skills such as:
− Gas line sizing
− Connecng gas lines, water lines,
valves, and electricity
− Knowledge of applicable naonal,
state, and local codes
− Installing venng through a wall
or roof
− Training in installaon of
condensing boilers. Training on
Rinnai I-Series Condensing Boilers
is accessible at
www.trainingevents.rinnai.us.
• Read all instrucons in this manual
before installing the boiler. The boiler
must be installed according to the
exact instrucons in this manual.
• Proper installaon is the responsibility
of the installer.
• When installaon is complete, leave
this manual with the boiler or give the
manual directly to the consumer.
Following is a list of common acronyms and
abbreviaons used in this manual:
Dealer Phone:
Purchase Date:
Serial #:
Rinnai I-Series Condensing Boiler Solo Manual 5
Indicates an imminently hazardous
situaon which, if not avoided, will
result in personal injury or death.
Indicates a potenally hazardous
situaon which, if not avoided, could
result in personal injury or death.
Indicates a potenally hazardous situaon
which, if not avoided, could result in minor
or moderate injury. It may also be used to
alert against unsafe pracces.
DANGER
CAUTION
WARNING
This manual contains the following important
safety symbols. Always read and obey all
safety messages.
The following precauons apply to the
installer and consumer. Read and follow all
instrucons in this secon.
• Before operang, 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 sele on the
oor.
• Keep the area around the appliance
clear and free from combusble
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.
• Combusble construcon refers to
adjacent walls and ceiling and should
not be confused with combusble or
ammable products and materials.
Combusble 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.
2
• If the informaon in these instrucons
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
instrucons.
− If you cannot reach your gas
supplier, call the re department.
• Installaon and service must be
performed by a qualied 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 potenal 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 ignion
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.
• Heang supply and return pipes leaving
the boiler can be hot to touch.
• Install the vent system per local and
naonal codes.
• Do not install this boiler above 10,200
(3,109 m).
• Do not obstruct combuson 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 baeries 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 substute materials. Use only
parts cered for the appliance.
• Should overheang 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 qualied professional who has
aended a Rinnai installaon training class
to adjust parameter sengs.
• Do not use an extension cord or adapter
plug with this appliance.
• Any alteraon 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
heang system is done at the boiler
system lling staon 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 qualied
professional. Force or aempted
repair may result in a re or explosion.
• Proper venng is required for the safe
operaon 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 heang to the building with the
ability to connect an indirect tank for DHW
producon.
For complete boiler informaon, refer to the
“Rinnai I-Series Condensing Boiler
Installaon Manual” supplied with the boiler,
or visit rinnai.us.
Topics in this secon
• Front View
• Boom View
• Components
• Specicaons
• Dimensions
• Accessories
3
Vent
Connecons
Piping Connecons
Controller
Central
Heang
Supply
Gas
Central
Heang
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 Heang 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
Ignion Unit
Air Vent
Burner Assembly
PC Board Cover
Control Panel
Condensate Trap
PC Board Removed
Combuson
Test Port
10 Rinnai I-Series Condensing Boiler Solo Manual
1
Maximum gas supply pressure must not exceed the value specied by the manufacturer.
Rinnai products are connually being updated and improved; therefore, specicaons are subject
to change without prior noce.
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
Installaon Type Indoor
Ignion System Direct Electronic Ignion
Heat Exchanger Surface Area
9.3 sq 10.9 sq
Gas Consumpon
(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
Seng
Indirect Tank
(DHW)
120°F - 150°F (50°C - 65°C)
Water Content
0.75 gal 0.88 gal
Water Pressure
CH
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
1
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 Connecons
AC 120 Volts, 60 Hz
Cercaons
ANSI Z21.13, CSA 4.9, ASME
Canada CRN 2089.9CL
Rinnai I-Series Condensing Boiler Solo Manual 11
Vent Connecon: 2 in. (51 mm) nominal PVC/Polypropylene or 3 in./5 in. Concentric
Measurements: in. (mm)
12 Rinnai I-Series Condensing Boiler Solo Manual
Connecon Connecon 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 Heang
Return
Gas
Central Heang
Supply
Rinnai I-Series Condensing Boiler Solo Manual 13
The following oponal 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
Rell cartridge for the ScaleCuer
lter assembly.
PRIMARY-SECONDARY HEATING KIT
Part #: 807000213
14 Rinnai I-Series Condensing Boiler Solo Manual
THIS SECTION IS INTENDED
FOR THE INSTALLER
Installer qualicaons: A trained and qualied
professional must install the appliance,
inspect it, and leak test the boiler before use.
The warranty will be voided due to any
improper installaon. The trained and
qualied professional should have skills such
as: Gas sizing; Connecng gas lines, water
lines, valves, and electricity; Knowledge of
applicable naonal, state, and local codes;
Installing venng through a wall or roof; and
training in installaon of condensing boilers.
Training for Rinnai Condensing Boilers is
accessible online at
www.trainingevents.rinnai.us.
Topics in this secon
• Installaon Guidelines
• What You’ll Need
• Items Included
• Choose an Installaon Locaon
• Mount the Boiler to the Wall
• Fill the Condensate Collector
4
• This boiler is cered for installaon in
residenal and commercial applicaons.
• This boiler is suitable for combinaon
water heang through an indirect tank
and central heang.
• The installaon must conform with local
codes or, in the absence of local codes,
with the Naonal Fuel Gas Code, ANSI
Z223.1/NFPA 54, or the Natural Gas and
Propane Installaon Code, CSA B149.1. If
installed in a manufactured home, the
installaon must conform with the
Manufactured Home Construcon 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 Naonal 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 tesng of that system at test
pressures in excess of 1/2 psi (3.5 kPa)
(13.84 in W.C.). For system tesng 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 installaon
instrucons and those in secon
“5. Venng” for adequate combuson
air and exhaust.
• Should overheang occur or the gas
supply fail to shut o, turn o the
manual gas control valve to the
appliance.
• Combuson 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
jurisdicon, the installaon must comply
with the Standard for Controls and
Safety Devices for Automacally 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
connecons will result in damage to
the area adjacent to the appliance
or to lower oors of the structure.
When such locaons cannot be
avoided, it is required that a
suitable drain pan, adequately
drained, be installed under the
boiler. The pan must not restrict
combuson air ow.
DO NOT install the boiler in an area
with negave air pressure.
DO NOT obstruct the ow of
combuson and venlaon air.
DO NOT use substute parts that
are not authorized for this boiler.
DO NOT install the boiler on
carpeng.
DO NOT
Gather the recommended tools and parts
before starng installaon.
Items Needed
• Boiler Pump
• Pressure relief valve for domesc
hot water (150 PSI / 1,034 kPa) (as
necessary, if using a separate
indirect tank).
• Pressure/Temperature Gauge
Note: When aaching 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 heang
system
• Air separator
• Standard tools for central heang,
gas ng, plumbing and electrical
wiring.
• Digital manometer
• Digital mulmeter capable of
reading microamps
• pH digital meter or test strips
• For wall mounng bracket
installaon:
− Level
− Screws (use appropriate screws
for type of wall construcon)
Other Items You May Need
• Combuson analyzer (intended for
use with condensing boilers)
• Hand truck with fastening belt
• Ensure the wall is of sucient
strength to support the weight of the
boiler, piping and any other
components needed for installaon;
if it is not, please reinforce the wall as
appropriate.
• Operang limits of the boiler:
Maximum boiler set
point temperature:
180°F (82 °C)
Maximum operang
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 aempt to use any item that
appears damaged.
• Installaon and Operaon Manual (this manual)
• User Manual
• Warranty Card
• Technical Data Sheet (located on inside of boiler front panel)
• “Key Points for a Successful Installaon” 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 congured for Natural Gas only. Use this kit to convert to
Propane Gas if needed. Contents include:
Orice
Outer Gasket Inner Gasket Conversion Rang 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 secon
“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
Consideraon of care for your boiler should
include evaluaon 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 aect or
damage the boiler.
• Water that contains chemicals
exceeding the levels below can damage
the boiler.
* Source: Part 143 Naonal Secondary Drinking Water Regulaons
When choosing an installaon locaon, you
must ensure that clearances will be met and
that the vent length will be within required
limits. Consider the installaon
environment, water quality, and need for
freeze protecon. Requirements for the gas
line, water lines, electrical connecon, and
condensate disposal can be found in their
respecve installaon secons in this
manual.
This secon provides informaon on the
importance of water quality to the Rinnai
Condensing Boiler. The informaon is
intended to serve as general guidelines only
and is not a complete list of water quality
guidelines.
• Unsuitable heang system water can
cause the formaon of scale or sludge,
which aects system eciency. 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
dislled water to soen the water to
ll the heang system.
• Oxygen permeable or rubber tubing is
not permied in the heang 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 protecon of the heang
system is desired, only use Rinnai-
approved anfreezes. The allowed
maximum concentraon is 40%.
• Reference secon “14.1 Approved
Cleaners, Inhibitors and Anfreezes” in
the Appendix for an approved list of
system cleaners, inhibitors, and
anfreezes.
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 locaon for the boiler.
Air surrounding the boiler, venng, and vent terminaon(s) is used for combuson 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 oen contains these compounds. The boiler, venng, and
vent terminaon(s) should not be installed in any areas where the air may contain these corrosive
compounds.
Locaon Clearance
Top 2 in. (51 mm)
0 in. from vent components
Boom (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 locaon complies with the required clearances.
□
The planned combuson air and exhaust terminaon locaons 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 installaon must conform with local codes or, in the absence of local codes, with the
Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installaon
Code, CSA B149.1.
Top
Boom
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 illustraon
purposes only.
Side
Front
Rinnai I-Series Condensing Boiler Solo Manual 19
Supplied by Installer:
• Level
• Four screws for mounng bracket
installaon
• Screws for top and boom bracket
installaon
Use appropriate screws for type of
wall construcon.
Hold the wall mounng bracket up
against the wall and use a level to
make sure the bracket is even. Proper
operaon requires the boiler to be
level.
Use four screws to secure the wall
mounng bracket to the wall (two
screws on far le side and two
screws on far right side).
Use the appropriate screws for the
wall construcon to secure the
mounng bracket to the wall
between two studs.
You Will Need:
• Rinnai Condensing Boiler
• Wall Mounng Bracket
Level
Wall Mounng Bracket
Insert the top bracket into the wall
mounng bracket. Make sure the wall
mounng bracket is aached to the wall
and can hold the weight of the boiler
before you fully let go.
Boiler
Right Side
Steps connued on next page.
Instrucons:
20 Rinnai I-Series Condensing Boiler Solo Manual
Securely screw the top and boom
brackets into the wall, making sure
the screws are ush with the wall.
• Use any of the holes in the top
and boom brackets.
• Make sure the securing method is
sucient to support the weight of
the boiler. Refer to the boiler
weight in secon “3.4
Specicaons” of this manual.
The boiler must be installed in an
upright and level posion. 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 operaon of the boiler, the
condensate collector must be lled with
water. This is to prevent the potenal 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
Boom Bracket
Rinnai I-Series Condensing Boiler Solo Manual 21
• I-Series boilers can be installed in
direct vent or non-direct vent
applicaons.
• When installed as Direct Vent, refer to
the following secon 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 naonal
recognized tesng agency.
• Exhaust must be directly vented to
the outside. Combuson air can be
provided from outside (Direct Vent) or
from room air (Non-Direct Vent).
• If using room air (non-direct vent) for
combuson, ensure the required
volume of indoor air is available
according to the Naonal Fuel Gas
Code, ANSI Z223.1/NFPA 54.
• Avoid dips or sags in horizontal vent
runs by installing supports per the
vent manufacturer’s instrucons.
• Support horizontal vent runs every 4
(1.2 m) and all vercal vent runs
every 6 (1.83 m) or as per vent
manufacturer’s instrucons or local
code requirements.
WARNING
Topics in this secon
• Guidelines
• Venng Installaon Sequence
• Terminaon Consideraons
• PVC Venng Safety Switch
• Venng Opons
5
• Venng should be as direct as possible
with a minimum number of pipe ngs.
• For manufactured vent systems, vent
connecons must be rmly pressed
together so that the connecons form an
air ght seal. Follow the venng
manufacturer’s instrucons.
• Refer to the Schedule 40 PVC/CPVC
manufacturer for appropriate ngs,
solvents or joining methods.
• If venng reassembly is needed, follow
the steps for installing the venng in the
following secons. 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 instrucons of the vent
system manufacturer for component
assembly instrucons.
• If the vent system is to be enclosed, it is
suggested that the design of the enclosure
shall permit inspecon of the vent system.
The design of such enclosure shall be
deemed acceptable by the installer or the
local inspector.
• Any issues resulng from improper vent
installaon 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 insulaon.
• DO NOT combine vent components
from dierent manufacturers.
• DO NOT reduce the vent diameter. Vent
diameter cannot be less than 2 in.
• DO NOT connect the venng system
with an exisng 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 terminaon method—horizontal
or vercal, concentric, or twin pipes, etc.
2. Determine proper locaon for wall or roof
penetraon for each terminaon.
3. Install terminaon assembly as described in this
manual or in the vent manufacturer’s
installaon instrucons.
4. Install air and vent piping from boiler to
terminaon.
5. Slope horizontal exhaust run towards the boiler
1/4 in per foot. DO NOT slope combuson air
pipe towards boiler.
6. Install vent supports and brackets allowing for
movement from expansion, or as per vent
manufacturer’s instrucons or local code
requirements.
7. (Oponal step) Install vent screen or room air
lter (not included with purchase) on Schedule
40 PVC combuson air and exhaust terminaon
elbows as illustrated below.
Check to determine whether local codes
supersede the following clearances:
• Avoid terminaon locaons near a dryer
vent.
• Avoid terminaon locaons near
commercial cooking exhaust.
• Avoid terminaon locaons near any air
inlets.
• You must install a vent terminaon at least
12 in above the ground or ancipated snow
level.
Vent Screen
• Press vent screen inside of
terminaon piece/elbow.
• Secure vent screen to the
elbow with screw.
The vent for this appliance shall not
terminate:
• Over public walkways.
• Near sot 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 operaon of regulators
pressure relief valves, or other
equipment.
Listed below are important consideraons
for locang vent terminaon under a sot
(venlated or unvenlated or eave vent; or
to a deck or porch):
• Do not install vent terminaon under
a sot vent such that exhaust can
enter the sot vent.
• Install vent terminaon such that
exhaust and rising moisture will not
collect under eaves. Discoloraon to
the exterior of the building could
occur if installed too close.
• Do not install the vent terminaon too
close under the sot where it could
present recirculaon of exhaust gases
back into the combuson air intake of
the terminaon.
Horizontal porons of the venng 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 accumulaon 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 buon 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 posion.
DIP Switches
PC Board
ON
The instrucons in this secon explain how to adjust boiler sengs to
allow for higher exhaust temperatures. These instrucons apply only for
installaons using CPVC, listed Polypropylene, or stainless steel venng. If these instrucons are
not followed exactly, a re or carbon monoxide leak may result causing property damage,
personal injury, or death.
DO NOT adjust boiler sengs to allow higher exhaust temperatures when venng with PVC.
WARNING
Press and Hold
Red Buon
for Five Seconds
This product is equipped with safety devices to control the exhaust temperature which allows for a
variety of venng materials to be used in its nal installaon. The boiler is set up from the factory to
be installed with a PVC venng system and a built-in control to limit the exhaust temperature to be
below 149°F (65°C). In high temperature applicaons where the exhaust temperature can exceed
149°F (65°C), CPVC, listed Polypropylene (PP), or stainless steel venng must be used. The choice of
venng 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 sengs.
24 Rinnai I-Series Condensing Boiler Solo Manual
5. Press the Mode buon on the controller.
6. Press the (Up) or (Down) arrows unl A2-A appears in the display. Then, press the
Select buon.
8. The boiler is now set to allow higher exhaust temperatures. To exit parameter sengs and
enter normal operaon mode, press the Mode buon.
9. Replace the boiler’s front panel by reinserng the four screws that secure the panel.
7. Press the (Up) or (Down) arrows unl A2- appears in the display. Then, press the
Select buon.
01-A
A2-A
Select buon
A2-
Select buon
Rinnai I-Series Condensing Boiler Solo Manual 25
Two venng opons are available: Direct Vent and Non-Direct Vent (Room Air).
Concentric Pipe
Combuson air and exhaust vent directly
through a single concentric connecon. Hot
exhaust exits through the interior pipe,
while combuson air enters through the
outer pipe.
Twin Pipe
Combuson air and exhaust vent
directly through separate penetraons.
See the Direct Vent secon for complete details.
Direct Vent (Concentric and Twin Pipe)
Opon 1
Opon 2
Exhaust
Combuson
air
Combuson
air
Exhaust
Combuson
air
Non-Direct Vent (Room Air)
See the Non-Direct Vent secon for complete details.
Room air is used for combuson
while exhaust vents to the outside.
Exhaust
Combuson
air
26 Rinnai I-Series Condensing Boiler Solo Manual
Following is a list of vent components and terminaons for Direct Vent installaons (concentric and twin pipe).
Install the correct venng for your model according to the venng manufacturer’s instrucons and the guidelines
below. The informaon below is correct at me of publicaon and is subject to change without noce. Contact the
vent manufacturer for quesons related to the vent system, products, part numbers and instrucons.
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.heaab.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
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.
5
224356NPP, 224359 2/4 Condensing Roof Discharge
Terminaon 20 in. above roof
5
710202NPP 2/4 Condensing 90 Degree Diverter Nose
(Use with Wall Terminal)
5
710215NPP 2/4 Condensing 45 Degree Diverter Nose
(Use with Wall Terminal)
5
196005, 197040
FGV Concentric Vent Kit (16 in. length)
20
196005PVC (Order from Rinnai)
196105, 197033
FGV Concentric Vent Kit (28 in. length)
20
196105PVC (Order from Rinnai)
196125
FGV Concentric Vent Kit (40 in. length)
20
196125PVC (Order from Rinnai)
UBBINK
IPEX
Diagram
Horizontal
Vercal
Equivalent
Length ()
Product
Descripon
Manufacturer
Part Number
Manufacturer
Rinnai I-Series Condensing Boiler Solo Manual 27
2 in./4 in. CONCENTRIC VENT TERMINATIONS (Connued)
52CVKGVS6502 PVC Concentric Vent Kit
2 in. x 16 in.
20
52CVKGVS6502-28 PVC Concentric Vent Kit
2 in. x 28 in.
20
52CVKGVS6502-40 PVC Concentric Vent Kit
2 in. x 40 in.
20
ICRT2439 2 in. x 4 in. Concentric Roof
Terminaon
20
2PPS-VKL/VK-TCL 2 in. x 4 in. Vercal Terminaon
Cap Kit-Concentric
20
2PPS-HKL 2 in. x 4 in. Horizontal Terminaon
Kit-Concentric
20
190288 2 in. x 4 in. Concentric Horizontal
Terminaon
5
190295 2 in. x 4 in. Concentric Vercal
Terminaon
5
CVENT-2 2 in. x 4 in. Concentric Horizontal
Terminaon
20
2ZDCTH24 2 in. x 4 in. Concentric Horizontal
Terminaon
5
2ZDCTV24 2 in. x 4 in. Concentric Roof
Terminaon
5
ROYAL
CENTROTHERM
DURAVENT
Manufacturer
Manufacturer
Part Number
Product
Descripon
Diagram
Horizontal
Vercal
Equivalent Length
()
ECCO
DIVERSITECH
Z-FLEX
28 Rinnai I-Series Condensing Boiler Solo Manual
3 in./5 in. CONCENTRIC VENT TERMINATIONS
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.
5
223186PP 3/5 Condensing Horizontal Diverter
Terminaon Kit 19 in.
16
224047PP 3/5 Condensing Raised Horizontal
Terminaon Kit
24
184162PP 3/5 Condensing Roof Discharge
Terminaon 20 in. above roof
5
196006, 197009
FGV Concentric Vent Kit 3 in. x 20 in.
20
196006PVC (Order from Rinnai)
196106, 197107
FGV Concentric Vent Kit 3 in. x 32 in.
20
196106PVC (Order from Rinnai)
196116, 197117
FGV Concentric Vent Kit 3 in. x 44 in.
20
196116PVC (Order from Rinnai)
52CVKGVS6503 (PVC)/
52CVKGVSF9003 (CPVC)
PVC/CPVC Concentric Vent Kit 3 in. x 20 in.
20
52CVKGVS6503-32 (PVC)/
52CVKGVSF9003-32 (CPVC)
PVC/CPVC Concentric Vent Kit 3 in. x 32 in.
20
52CVKGVS6503-44 (PVC)/
52CVKGVSF9003-44 (CPVC)
PVC/CPVC Concentric Vent Kit 3 in. x 44 in.
20
SC03HT Horizontal Terminaon Adapter
20
SC03VT Vercal Terminaon Adapter
20
ICRT3539 3''/5'' Concentric Roof Terminaon PPs-UV
20
Manufacturer
Manufacturer
Part Number
Product
Descripon
Diagram
Horizontal
Vercal
Equivalent Length
()
UBBINK
ROYAL
IPEX
CENTRO
-
THERM
HEAT
-FAB
Rinnai I-Series Condensing Boiler Solo Manual 29
3 in./5 in. CONCENTRIC VENT TERMINATIONS (Connued)
3CGRLSV Vercal Adapter
1
3CGRLSH Horizontal Adapter
6
3CGRVT Vercal Terminaon
5
3CGRHT Horizontal Terminaon
16
3PPS-VKL/VK-TCL 3 in. x 5 in. Vercal
Terminaon Cap Kit-
Concentric
20
3PPS-HKL 3 in. x 5 in. Horizontal
Terminaon Kit-Concentric
20
190388 3 in. x 5 in. Concentric
Horizontal Terminaon
5
190395 3 in. x 5 in. Concentric
Vercal Terminaon
5
CVENT-3 3 in. x 5 in. Concentric
Horizontal Terminaon
20
2ZDCTH35 3 in. x 5 in. Concentric
Horizontal Terminaon
5
2ZDCTV35 3 in. x 5 in. Concentric Roof
Terminaon
5
METAL
-FAB
DURAVENT
Manufacturer
Manufacturer
Part Number
Product
Descripon
Diagram
Horizontal
Vercal
Equivalent Length
()
ECCO
DIVERSITECH
Z-FLEX
30 Rinnai I-Series Condensing Boiler Solo Manual
2 in. TWIN PIPE TERMINATIONS
2 in. TWIN PIPE TERMINATIONS
ISELL0287UV 2 in. 87° Long PPS-UV
6
ISTT0220 2 in. Terminaon Tee
6
ISLPT0202 2 in. Low Prole Wall
Terminaon
5
2PPS-HTPL 2 in. Twin Pipe
Terminaon
10
2PPS-HSTL 2 in. Single Horizontal
Terminaon
6
2PPS-TBL 2 in. Black UV Resistant
Tee
5
196984 FGV PVC Low Prole
Terminaon Kit
5
196984PVC (Order from Rinnai)
081216 FGV PVC Wall
Terminaon Kit
16
52SWVKGVS6502 PVC Side Wall Vent Kits
5
52WTVKGVS6502 PVC Wall Vent Kits
16
HVENT-2 2 in. Low Prole
Horizontal Vent Kit
5
CENTROTHERM
DURAVENT
Manufacturer
Manufacturer
Part Number
Product
Descripon
Diagram
Horizontal
Vercal
Equivalent
Length ()
IPEX
ROYAL
DIVERSITECH
Rinnai I-Series Condensing Boiler Solo Manual 31
3 in. TWIN PIPE TERMINATIONS
Manufacturer
Manufacturer
Part Number
Product
Descripon
Diagram
Horizontal
Vercal
Equivalent
Length ()
3 in. TWIN PIPE TERMINATIONS
ISELL0387UV 3 in. 87° Long PPS-UV
6
ISTT0320 3 in. Terminaon Tee
6
ISLPT0303 3 in. Low Prole Wall
Terminaon
5
3PPS-HTPL 3 in. Twin Pipe
Terminaon
10
3PPS-HSTL 3 in. Single Horizontal
Terminaon
5
3PPS-TBL 3 in. Black UV
Resistant Tee
6
196985 FGV PVC Low Prole
Terminaon Kit
5
196985PVC (Order from Rinnai)
081219 FGV PVC Wall
Terminaon Kit
16
52SWVKGVS6503 PVC Side Wall Vent
Kits
5
52WTVKGVS6503 PVC Wall Vent Kits
16
HVENT-3 3 in. Low Prole
Horizontal Vent Kit
5
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 Installaon in North America
United States Canada
Thermoplasc Piping Materials
Vent or Combuson
Air Intake Pipe and
Fings
PVC Schedule 40 ANSI/ASTM D1785
Thermoplasc vent pipe must be
cered 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
Terminaon 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
5
90° Elbow
5
2.5 45° Elbow
Product
Descripon
Diagram
Horizontal
Vercal
Equivalent
Length ()
Rinnai I-Series Condensing Boiler Solo Manual 33
Canadian Installaons
(CSA B149.1)
U.S. Installaons
(ANSI Z223.1 /NFPA 54)
Ref Descripon 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 * *
D
Vercal clearance to venlated sot, located above the terminal within a
horizontal distance of 2 (61 cm) from the center line of the terminal
* *
E Clearance to unvenlated sot * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H
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 vercal
center line of the regulator vent
outlet to a maximum vercal
distance of 15 (4 m)
*
J
Clearance to non-mechanical air supply inlet to building or the
combuson 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
L
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
X
V
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] Permied 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 installaon codes and the
requirements of the gas supplier.
The informaon 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 terminaons (horizontal and/or vercal)
must terminate 12 in. (0.30 m) above grade or
ancipated snow level.
12 in. (0.30 m)
Between terminals at same level
60 in. (1.52 m)
Between terminals at dierent 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) vercally
between terminals
Rinnai I-Series Condensing Boiler Solo Manual 35
The instrucons 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 connecon.
Remove exhaust adapter ring (discard for
concentric venng conguraons).
Install the concentric vent. Ensure it is properly
seated.
Secure the vent pipe to the concentric ue
connecon with the supplied screw.
Horizontal Wall Terminaons
Vercal Roof
Terminaons
2 in. x 4 in.
and
3 in. x 5 in.
2 in. x 4 in.
and
3 in. x 5 in.
Install the venng terminaon according to the diagrams and instrucons 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 Vercal Terminaon
of Mulple Boilers
12 in. (0.30 m) minimum
12 in. (0.30 m)
minimum
above
combuson air
opening
Roof
12 in. (0.30 m) above
grade or ancipated
snow level
12 in. (0.30 m)
minimum
Combuson
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 addional venng, ngs
and terminaons.
Sidewall Clearances
12”
4”
Combuson Air
Intake
Exhaust
8”
Horizontal Vent and
Combuson 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 connecon. With the use of a pipe reducer, installers
can use a 3 in. pipe for the combuson air and exhaust.
DO NOT apply PVC glues, solvents, or cleaners to the boiler’s combuson air or exhaust gasket
connecons. Failure to correctly assemble the components according to these instrucons may
result in property damage, personal injury, or death.
WARNING
Remove and discard the screw from the
combuson air vent connecon.
Remove and discard the combuson
air vent cap.
Install the combuson air vent pipe.
Ensure it is properly seated.
Secure the combuson air vent pipe to the
combuson air vent connecon 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.
Combuson Air Vent
Supplied
Exhaust Vent Pipe
Supplied
38 Rinnai I-Series Condensing Boiler Solo Manual
Rinnai cauons against installing the boiler in applicaons with venng in dierent
pressure planes. It is possible to have poor performance with this installaon.
Slope horizontal exhaust 1/4 in. per foot towards the boiler. DO NOT slope combuson air pipe towards the boiler.
2 in. or 3 in.
PVC/CPVC
IPEX / Royal
Concentric
Side Wall
Terminaon
Conguraon
2 in. or 3 in.
PVC/CPVC
IPEX /Royal
Concentric
Vercal
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC
Snorkel
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC
Standard
upside down
"U" Vercal
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC
Elbow or Tee
Side Wall
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC Tee
Vercal
Terminaon
Conguraon
2 in. or 3 in.
PVC Low
Prole
Terminaon
Conguraon
This conguraon requires the use of
a Concentric Vent Terminaon.
Exhaust and
combuson air
MUST NOT be
brought
together into
a single PVC
pipe using a
pipe ng.
Exhaust
Combuson
Air
Single
Pipe
This conguraon requires the use of
a Concentric Vent Terminaon.
CAUTION
Tee not permissible
for intake
terminaon
Tee not permissible
for intake
terminaon
WARNING
Rinnai I-Series Condensing Boiler Solo Manual 39
Canadian Installaons
(CSA B149.1)
U.S. Installaons
(ANSI Z223.1 /NFPA 54)
Ref Descripon 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 * *
D
Vercal clearance to venlated sot, located above the
terminal within a horizontal distance of 2 (61 cm) from
the center line of the terminal
* *
E Clearance to unvenlated sot * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H
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 vercal center line of
the regulator vent outlet to a maximum
vercal distance of 15 (4 m)
*
J
Clearance to non-mechanical air supply inlet to building or
the combuson 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
L
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
X
V
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] Permied 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 installaon codes and the
requirements of the gas supplier.
40 Rinnai I-Series Condensing Boiler Solo Manual
Room Air Vercal Terminaon of Mulple Boilers
Exhaust Terminaon Clearances for Internal (Indoor) Room Air Applicaons
Exhaust
Roof
12 in. (0.30 m)
minimum
12 in. (0.30 m) above
grade or ancipated
snow level
60 in.
12 in.
12 in.
(0.30 m)
Inside
Corner
(1.52 m)
Vercally
between
terminals
IMPORTANT
• Installaon of Room Air must use listed Category IV venng.
• All terminaons (horizontal and/or vercal) must terminate 12 in. above grade or
ancipated snow level.
Rinnai I-Series Condensing Boiler Solo Manual 41
• This boiler requires adequate combuson air for venlaon and diluon of ue gases. Failure to
provide adequate combuson air can result in unit failure, re, explosion, serious bodily injury
or death. Use the following methods to ensure adequate combuson air is available for correct
and safe operaon of this boiler.
• Direct Venng is recommended in unusually ght buildings or in installaon locaons subject to
signicant negave air pressure.
Combuson air must be free of corrosive chemicals. Do not provide combuson 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 addional venng, ngs and terminaons.
For applicaons containing corrosive indoor air, this appliance must be installed as direct vent. DO
NOT use room air in applicaons where combuson 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 combuson air in gas appliances. Such chemicals can be found
in, but not limited to bleach, ammonia, cat lier, 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
Unconned Space
An unconned space is dened in Naonal 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 rang of all appliances installed in that space. Rooms communicang directly with the space
in which the appliances are installed, through openings not furnished with doors, are considered a
part of the unconned space.” If the “unconned space” containing the appliance(s) is in a building
with ght construcon, addional outside air may be required for proper operaon. Outside air
openings should be sized the same as for a conned space.
Conned Space
A conned space is dened in the Naonal 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
rang of all appliances installed in that space." Examples include a small room, closet, alcove,
ulity room, etc. A conned space must have two combuson air openings. Size the combuson air
openings based on the Btu input for all gas ulizaon equipment in the space and the method by
which combuson air is supplied.
Using Indoor Air For Combuson
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). Combuson 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 Combuson
Outdoor air can be provided to a conned 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
boom, of the conned space. The openings shall communicate to the outside by one of two ways.
When communicang directly with the outdoors through horizontal ducts, each opening shall have
a minimum free area of 1 in
2
/2000 Btu/hr (1100 mm
2
/kW) of total input rang of all appliances in
the conned space.
Note: If ducts are used, the cross seconal 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 consideraon must be taken for the design of the louvers or
grills to maintain the required free area required for all gas ulizing 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.
2
Metal: 10 in. x 12 in. x 0.75 = 90 in.
2
Rinnai I-Series Condensing Boiler Solo Manual 43
Combuson air provided to the appliance should not be taken from any area of the structure
that may produce a negave pressure (i.e. exhaust fans, powered venlaon fans).
Locaon
To maintain proper circulaon of combuson air two permanent openings (one upper, one lower)
must be posioned in conned spaces. The upper shall be within 12 in. (0.30 m) of the top of the
conned space and the lower opening shall be within 12 in. (0.30 m) of the boom of the conned
space. Openings must be posioned as to never be obstructed.
12 in.
(300 mm)
10 in.
(250 mm)
□
Verify all combuson air opening sizes are correct.
□
Ensure that the Combuson Air Requirements are followed that will provide sucient
combuson air for the appliance.
□
DO NOT use room air for combuson in applicaons where the indoor air is corrosive.
□
Verify that adequate combuson air is available for all appliances installed in the space.
□
Installaon complies with Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54 as well as local
and state regulaons therein.
To prevent possible personal injury or death due to asphyxiaon, common venng 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 combuson air
vent connecon.
Remove and discard the combuson air
vent cap.
Install the combuson air vent pipe. Ensure it is properly seated.
Secure the combuson air vent pipe to the
combuson air vent connecon 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 combuson air PVC vent pipe
per manufacturer’s instrucons.
Install the exhaust vent pipe. Ensure it is
properly seated.
Secure the exhaust vent pipe to the exhaust
adapter ring with the supplied screw.
Combuson Air Vent Pipe
Supplied
screw
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
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC Standard
Upside Down "U"
Vercal Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC Elbow or
Tee Side Wall
Terminaon
Conguraon
2 in. or 3 in.
Schedule 40
PVC/CPVC Tee
Vercal Terminaon
Conguraon
Rinnai cauons against installing the boiler in applicaons with venng in dierent
pressure planes. It is possible to have poor performance with this installaon.
CAUTION
4 in. B-Vent
Pipe
2 in. PP
Flex Venng
Ubbink Rolux® exible
venng approved for
vercal non-direct vent
(room air) applicaons
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 ignion system components
are protected from water (dripping,
spraying, rain, etc.) during appliance
operaon 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 ignion sources while
working with gas.
• Do not turn on the boiler or gas unl all
fumes are gone.
1. Check the type of gas and gas supply
pressure before connecng the boiler. If the
boiler is not of the gas type that the building
is supplied with, converng the gas type of
the boiler is necessary. A gas conversion kit is
included with the boiler. Refer to secon
“14.4 Gas Conversion” in the Appendix for
gas conversion instrucons.
2. Check the gas supply pressure immediately
upstream at a locaon provided by the gas
company. Supplied gas pressure must be
within the limits shown in secon “3.4
Specicaons” with all gas appliances
operang.
3. Before placing the appliance in operaon, all
joints including the heater must be checked
for gas ghtness by means of soap, gas leak
detector soluon, or an equivalent
nonammable soluon, as applicable. Since
some leak test soluons, including soap and
water, may cause corrosion or stress
cracking, the piping shall be rinsed with
water aer tesng, unless it has been
determined that the leak test soluon 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
connecon to the boiler.
5. Any compound used on the threaded joint of
the gas piping shall be a type that resists the
acon of liqueed petroleum gas (propane/
LPG).
6. The gas supply line shall be gas ght, sized,
and so installed as to provide a supply of gas
sucient to meet the maximum demand of
the heater and all other gas consuming
appliances at the locaon without loss of
pressure. If in doubt about the size of the gas
line, refer to secon “6.3 Gas Pipe Sizing
Reference Tables.”
7. Perform a leak and pressure test prior to
operang the boiler. If a leak is detected, do
not operate the boiler unl the leak is
repaired.
Topics in this secon
• Connect the Gas Supply
• Gas Operang Instrucons
• Gas Pipe Sizing Reference Tables
6
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 enre gas load
required at the locaon. 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 Naonal Fuel
Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and
Propane Installaon 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 heang
value of the gas (available from the local gas company). The
gas input needs to include all gas products at the locaon 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 informaon 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
Specic Gravity: 0.60
Informaon 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:
Addional Appliance Total Gas
Input:
Heang Value of Gas:
Cubic Feet Per Hour (CFH):
ANSWER:
B
65,000
Btu/hr
C
1,000
Btu/
3
A
150,000
Btu/hr
150,000+65,000
(CFH) =
1000
215
FT
3
/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) =
C
Instrucons: Enter values in empty boxes.
Rinnai Model Gas Input:
Addional Appliance Total Gas Input:
Heang Value of Gas:
Cubic Feet Per Hour (CFH):
ANSWER:
B
Btu/hr
C
Btu/
3
A
Btu/hr
(CFH) =
FT
3
/HR
CFH =
A + B
(CFH) =
C
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
Specic 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
Informaon in table obtained from
NFPA 54, ANSI Z223.1.
Informaon in table obtained from
NFPA 54, ANSI Z223.1.
Intended use: Inial supply pressure
of 8.0 in. w.c. or greater.
Schedule 40 Metallic Pipe
Inlet Pressure: 11 in. w.c.
Specic Gravity: 1.50
EXAMPLE
Rinnai Model Gas Input:
Addional Appliance total Gas Input:
Heang Value of Gas:
Cubic Feet Per Hour (CFH):
ANSWER:
B
65,000
Btu/hr
C
1,000
Btu/
3
A
150,000
Btu/hr
150,000+65,000
(CFH) =
1000
215
3
/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) =
C
EXAMPLE
Rinnai Model Gas Input:
Addional Appliance Total Gas Input:
Total Gas Input:
ANSWER:
B
65,000
Btu/hr
A
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 heang system to remove all
debris and air. Debris and air in the lines
will damage the boiler.
• When removing the plasc sealing caps
from the boiler connecons, water may
come out of the boiler due to live re
tesng during manufacturing.
• The boiler, when used in connecon with
a refrigeraon 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 heang coils located
in air handling units where they may be
exposed to refrigerated air circulaon
must be equipped with ow control
valves or other automac means to
prevent gravity circulaon of the boiler
water during the cooling cycle.
• Some installaons with mulple zone
valves may require a dierenal 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
instrucons below.
For standard installaons, refer to the “Piping
Diagram for Basic Central Heang
Installaon” in this chapter.
Plumb the heang return line to the
heang return connecon on the
boom of the boiler.
CAUTION
• Guidelines
• Instrucons
• Common CH Components
• Piping Diagram for a Basic CH System
(With Hydraulic Separaon)
• Hydraulic Separaon
• Connect the Pressure Relief Valves
• Connect the Condensate Drain Line
• Condensate Pump Safety Switch
Wiring
Topics in this secon
7
The boiler may not be installed directly to
a heang system where polybutylene or
other oxygen permeable piping is used.
Water connecons to the boiler should
follow all state and local plumbing codes.
IMPORTANT
• It is required to include an air separator
on the central heang supply of the
system.
• System piping should be insulated when
freezing is a potenal concern.
• All piping must comply with local, state,
naonal or ASME code as appropriate.
Heang Return Connecon
Rinnai I-Series Condensing Boiler Solo Manual 51
Listed below are common components in a
Central Heang 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
heang system. When replacing an
expansion tank, consult the expansion
tank manufacturer for sizing.
• Air Separator — An air separator is
needed on the central heang 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 Heang Kit accessory oered
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 heang PRV
is present in the Primary-Secondary
Heang Kit accessory oered by Rinnai.
• Oxygen Eliminaon — The boiler may
only be installed in a pressurized closed-
loop heang system, free of air and
other impuries. If using oxygen
permeable tubing in the central heang
system, a plate heat exchanger is
necessary to isolate the tubing and
boiler.
Plumb the heang supply line to the
heang supply connecon on the
boom of the boiler.
Heang Supply Connecon
Hydraulic separaon with primary/secondary
piping is required when connecng the water
supply (see secon “7.5 Hydraulic
Separaon” for more informaon).
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 heang 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
Backow
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
Heang Kit
Common CH Components Connued
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 conguraon of the parcular 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 installaon is in accordance with all local building codes. Confer with local building ocials before installaon.
This picture illustrates a suggested
arrangement. Some of the ngs
are oponal.
LEGEND
This schemac shows an
example of a simple single zone
system with primary/secondary
piping by hydraulic separaon.
IMPORTANT
Outdoor
Sensor
Thermostat
Purge Staon
Heat Emier
Oponal Low Water Cut-O (LWCO)
54 Rinnai I-Series Condensing Boiler Solo Manual
Rinnai requires the use of hydraulic separaon between the boiler and central heang system.
Hydraulic separaon and primary/secondary piping allow two or more circulators in a hydronic
system to operate independently, without interfering with ow in connecng piping circuits.
Distance no
more than four
pipe diameters
IMPORTANT
For closely spaced tee installaons, the
separaon at the header is to be no
more than four pipe diameters.
Closely Spaced Tees
Boiler Supply
Boiler Return
NOTE
Examples of Hydraulic Separaon
Closely spaced tees and low loss headers are common examples of hydraulic separators and are
used to separate the boiler loop from the central heang loop.
When Rinnai I-Series Boilers are in use with Rinnai air handlers, please reference the air handler
Installaon and Operaon Manual for installaon and performance details.
Rinnai I-Series Condensing Boiler Solo Manual 55
Low Loss Header
To Heang Supply
From Heang 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 separaon, such as closely spaced tees or a low loss header.
Below are opons for the primary pump circulang across the boiler. No addional pressure drop is
accounted for through the system piping or system components. Recommended circulaon pumps
are listed below. The maximum amperage permied is 2 Amps.
Manufacturer part numbers are correct at me of publicaon and are subject to change without
noce. Contact manufacturer to conrm 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 Naonal Standard (ANSI
Z21.13) and ASME Boiler and Pressure Vessel
Code, Secon IV (Heang Boilers) for all water
heang systems and shall be accessible for
servicing (an approved pressure relief valve is
supplied with the boiler). When connecng a
pressure relief valve, follow the guidelines
below:
• The pressure relief valve must comply with
the standard for Relief Valves and
Automac 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, Secon IV (Heang Boilers).
• The pressure relief valve must be rated up
to 30 psi for central heang 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
operaon.
• 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 restricons 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
situaon. Do not plug the pressure relief
valve.
• The American Naonal Standard (ANSI
Z21.13) does not require a combinaon
temperature and pressure relief valve for
this appliance. However, local codes may
require a combinaon 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 plasc hose.
• The condensate drain pipe (along its
enre length) must be at least 1/2 in.
• Condensaon drain lines installed in
areas that are subject to freezing
temperatures should be wrapped with
an approved supplemental heat
source. Install per manufacturer’s
instrucons.
• 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
connecon.
• 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 secon “3.6
Accessories” for more informaon.
• The condensate drain pipe should be as
short as possible and have a downward
pitch.
• Before operaon 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 Installaon Manual
and local codes for neutralizer installaon
guidelines.
Image is for reference purposes only.
EXTERNAL TRAP
NOT REQUIRED
DO NOT
• DO NOT connect the condensate drain
line with an air condioning
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 secon: “7.8
Condensate Pump Safety Switch Wiring.”
The condensate pump (if installed) should be
wired to deacvate 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 insulaon o of the two ends.
Cut o
crimp connectors
To Condensate Pump
Strip insulaon
o both ends
of wire
DO NOT use a wrench to ghten the
condensate drain pipe connecon as this
could cause the connecon to break.
IMPORTANT
The steps in this secon must conform with
local codes and the guidelines established by
the Naonal Electrical Code (NEC).
4. Select an appropriate length of wire (18
AWG or greater) and strip the insulaon
o the ends. Follow the wiring guidelines
established by the Naonal 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” buon on the controller.
Test Operaon
1. Test the operaon of the shut o switch
by unplugging the condensate pump and
lling the condensate reservoir with
water unl the oat switch closes the
circuit.
2. Turn on the boiler.
3. The boiler displays diagnosc code “250.”
4. Plug in the condensate pump and conrm
condensate is owing out of the
reservoir.
5. Turn o the boiler by pressing the “On/
O” buon on the controller. Wait ve
seconds, then turn the power back on.
This will clear the diagnosc code.
See visual illustraon 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 Installaon
Wire Nut Connecng
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.
NC
NO
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 secon
• Guidelines
• Indirect Tank Control Opons
• Indirect Tank Electrical Connecons
• Simultaneous CH and DHW Operaon
• Indirect Tank Parameter Sengs
• Piping Diagram for a Basic DHW Installaon
8
• 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 heang appliance.
• DO NOT introduce toxic chemicals such as
those used for boiler water treatment to
the potable water used for central heang
into the DHW system.
Hot water can cause rst degree burns
with exposure for as lile 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
resulng 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 heang
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 sengs as appropriate.
When thermistor control is selected,
Parameter 31 becomes available; this
parameter selects the dierenal
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 connecon 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 sengs 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) posion Parameter 32 becomes available. The opon 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 opon 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) posion (this ensures the boiler will operate the indirect tank recirculaon pump
connected to the Pump 2 connecon).
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 applicaon (see the Parameter Sengs Table for
more informaon).
Indirect Tank Thermistor Connecon
PC
Board
DIP Switches
ON
OFF
Indirect Tank
Thermistor Connecon
Indirect Tank Pump
Connecon
Indirect tank pump
to be wired to boiler.
• Refer to secon “9.2 Electrical Connecons” for more informaon on the boiler’s electrical connecons.
• Refer to secon “12.3.8 PC Board DIP Switches” for more informaon on the boiler’s DIP switches.
Rinnai I-Series Condensing Boiler Solo Manual 63
Indirect Tank Thermostat Connecon
PC Board
DIP Switches
ON
OFF
Indirect Tank Pump
Connecon
Indirect Tank
Thermostat Connecon
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 heang
and domesc indirect tank heang. The
boiler can control dividing the ow
between domesc hot water producon
to the indirect tank and the central
heang circuit.
The boiler is set to domesc indirect tank
recovery as the priority. If it is desired to
have simultaneous operaon of central
heang and domesc hot water, access
the parameters (as shown in the
“Parameter Sengs” secon of this
manual) and adjust parameter 33 to “b.”
When DIP Switch 3 is in the OFF (default)
posion, the opon to select the duraon
of the indirect tank priority will become
available in Parameter 34. Aer this
period of me passes, the indirect tank
will cease to be heated and central
heang will have priority. If there is sll
an indirect tank demand aer 60 minutes
passes of CH priority, indirect tank priority
will begin again.
When DIP Switch 3 is in the OFF (default)
posion, Parameter 32 is selected to be
“Use Pump,” and when Parameter 33 is
selected to be "Simultaneous Heang
with Indirect Tank and CH" Parameter 35
becomes available. This enables CH
seng limitaon during simultaneous
heang. This can prevent unintenonally
supplying high temperature supply water
to low water heang temperature
applicaons such as oor heang. During
simultaneous operaon, the heang
supply temperature is based on the
indirect tank supply temperature. When
"NO" is selected, make sure that the CH
system and heang applicaon is
designed to allow for the high supply
temperature.
IMPORTANT:
The central heang supply temperature may
be up to 180°F (82°C) or higher during
simultaneous operaon. If the central
heang temperature is lower than 140°F
(60°C), the default seng is not to permit
the simultaneous operaon. The boiler
would then default to a DHW system with
Indirect Tank priority seng. In this
scenario, it prevents unintenonally
supplying high temperature supply water to
low water heang applicaon.
If the indirect tank seng is above 140°F
(60°C) and it is desired to have simultaneous
operaon with the indirect tank setpoint
higher than the CH setpoint, access the
parameters (as shown in the “Parameter
Sengs” secon of this manual) and adjust
parameter 35 to “b.” In this scenario, there
is the potenal to have higher temperature
water being supplied to the central heang
system. Ensure that the central heang
system is designed for this high supply
water temperature.
• When set for simultaneous
operaon, the me to recover the
indirect tank may be increased. If
high domesc hot water usage is
desired without greater potenal of
temperature loss, it is not
recommended to use the
simultaneous operaon feature.
• When the boiler is unable to perform
simultaneous operaon between CH
and recovering an indirect tank, the
indirect tank heang will take priority
and CH operaon will occur aer the
tank temperature is sased or
indirect tank priority me has
elapsed.
NOTE
NOTE
Refer to secon “12.3.8 PC Board DIP
Switches” for more informaon on boiler
DIP switches.
Rinnai I-Series Condensing Boiler Solo Manual 65
Parameter
Number
Seng Descripon
Selecon
A b C d
Indirect Tank Supply
Temperature with Thermistor
Control
180°F
(82°C)
Seng
Temperature
+18°F
(+10°C)
Seng
Temperature
+27°F
(+15°C)
30
Indirect Tank Supply
Temperature with Thermostat
Control
180°F
(82°C)
160°F
(71°C)
140°F
(60°C)
31
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)
32
Indirect Tank Operaon Opon Use Pump Use 3-Way
Valve
33
Indirect Tank Simultaneous
Heang
Indirect Tank
Priority
Simultaneous
Heang with
Indirect Tank
and CH
34
Indirect Tank Priority Time 60
minutes
40
minutes
90
minutes
35
CH Temperature Limitaon to
Allow Simultaneous Operaon
with Indirect Tank
Yes No
NOTE
Refer to secon “12.4.1 Parameter Sengs Table” for more informaon on parameter sengs.
66 Rinnai I-Series Condensing Boiler Solo Manual
The image below illustrates a suggested
arrangement. Some of the ngs are
oponal.
LEGEND
Zone Control
Panel
Thermostat
120V Input
Outdoor
Reset
Purge Staon
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 conguraon of the
parcular 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
installaon is in accordance with all local building codes.
Confer with local building ocials before installaon.
Oponal 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
ulized, the boiler, when installed,
must be electrically bonded to
ground in accordance with the
requirements of the authority having
jurisdicon or, in the absence of
such requirements, with the
Naonal Electrical Code, ANSI/NFPA
70, and/or the Canadian Electrical
Code Part I, CSA C22.1, Electrical
Code.
When connecng 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 locaons
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 protecon
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 installaon
to internal components or
accessories.
− Making wiring connecons and/
or changes to the wiring
terminals on the boiler.
• No changes may be made to the wiring
of the boiler.
• All connecons should be designed in
accordance with the applicable
regulaons.
• Label all wires prior to disconnecon
when servicing controls. Wiring errors
can cause improper and dangerous
operaon.
• Verify proper operaon aer operaon
servicing.
CAUTION
CAUTION
A manually operated remote switch
should be located outside the boiler
room door for shung down the
boiler. Consideraon 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 secon
• Guidelines
• Electrical Connecons
• Post-Power Supply Connecon
Checklist
9
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.
□
Conrm that the electricity is supplied from a 120 VAC, 60 Hz power source and is in a
properly grounded circuit.
□
Conrm that an extension cord or adapter plug has NOT been used with the boiler.
□
Conrm connecon 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 insulaon 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 prevenng 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
boom of the boiler.
• Use the proper diameter and size of wiring.
CAUTION
❼
❻
❹
❺
❽
❸
❷
❶
Item Connecon Item Note
Boiler Pump 120 VAC, Max 2.0 A
External Pump Connecon 2/
Indirect Pump
120 VAC, Max 2.0 A
External Pump Connecon 1 120 VAC, Max 2.0 A
T/T 1 Connecon
T/T 2 Connecon/Indirect
Tank Thermostat Connecon
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
❾
Rinnai I-Series Condensing Boiler Solo Manual 69
Failure to properly commission the boiler as
described in this secon may result in
unreliable and unsafe burner operaon and
reduced component life.
Boiler commissioning is a procedure used
aer boiler installaon to ensure the system
and boiler were installed correctly and ready
for operaon.
THIS SECTION IS INTENDED
FOR THE INSTALLER
This boiler must be commissioned by a
licensed professional. Installer qualicaons:
A trained and qualied professional must
install the appliance, inspect it, and leak test
the boiler before use. The warranty will be
voided due to any improper installaon. The
trained and qualied professional should
have skills such as: Gas sizing; Connecng
gas lines, water lines, valves, and electricity;
Knowledge of applicable naonal, state, and
local codes; Installing venng through a wall
or roof; and training in installaon 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 diagnosc code will be present unl the
boiler senses at least 13 PSI (90 kPa).
7. Check the heang system for leaks.
8. Begin the deaeraon process shown in the next
secon (“10.3 Deaeraon Process”).
• Work on the boiler must be carried out
by a licensed professional, using
correctly calibrated instruments with
current test cercaon. The
commissioning instrucons are intended
for licensed professionals who have the
necessary knowledge and are approved
for working on heang and gas systems.
• The fan will operate when power is
inially 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 tesng 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
secon)
IMPORTANT
IMPORTANT
Topics in this secon
• Safety Precauons
• Filling Process
• Deaeraon Process
10
WARNING
Do not ll the boiler unless permanent
power is available. Freeze protecon 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 deaeraon process takes approximately 15 minutes
for compleon.
Aer 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 buon again to
resume normal operaon mode.
6. Operate the central heang to ensure the boiler operates
properly.
7. Close the air vent located inside the boiler. Aer
approximately one week, all air in the system should be
eliminated via the air separator in the piping system.
DIP Switches
Note: Alternately, on inial installaon, you may press and hold the
Indirect Tank buon, then simultaneously press the CH buon on
the control panel instead of removing the boiler’s front panel.
2. On the PC Board, press and hold the top, le black buon shown below.
The Maintenance Required icon (see right image) on the controller
display will appear and iniate the deaeraon process.
PC Board
Maintenance
Required icon
Rinnai I-Series Condensing Boiler Solo Manual 71
DO NOT bypass the deaeraon 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 iniate or end the deaeraon process, press and hold the top, le black buon on the PC Board
(shown below).
DIP Switches
Deaeraon is an eecve method of purging air from the boiler aer the system has been lled or
serviced. While the boiler is running the deaeraon process, the Maintenance Required icon
(see right image) appears on the controller display.
Do not bypass deaeraon 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, deaeraon is crical
to prevent damage to the boiler.
PC Board
WARNING
72 Rinnai I-Series Condensing Boiler Solo Manual
Complete the following checklist when boiler installaon is complete. You should be able to answer YES to each
queson. If you answer NO, installaon is not complete. Refer to the applicable secon in this manual for
addional informaon.
INSTALLATION LOCATION YES NO
Have you veried the unit, vent and air intakes meet the clearance requirements?
VENTING YES NO
Have all corrosive compounds been removed from around the combuson air intake of the boiler?
Have you followed the combuson air requirements to provide sucient combuson air for the boiler?
Are the correct venng products for the installed model being ulized?
Have you installed the vent screen(s) for Schedule 40 PVC/CPVC vent applicaons if applicable?
Have you veried 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 veried 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 veried 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 deacvate 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 enre length is at least the same diameter as the
drain line?
Did you check to ensure the condensaon drain lines are protected from freezing?
Have you veried the condensate drain line is not plumbed with the pressure relief valve?
Have you conrmed the condensate drain line is not connected with an air condioning evaporator coil
drain?
This boiler has an integrated condensate trap. Have you veried that an external condensate trap is not
installed?
Have you conrmed the end of the condensate drain pipe is open to atmosphere?
Has an air gap been installed in the condensate drain line?
11
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 connecon 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 connecng the boiler?
PRESSURE RELIEF VALVE (PRV)
YES NO
Does the PRV comply with the standard for Relief Valves and Automac 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 heang 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 veried the PRV is not plumbed with the condensate drain line?
Have you veried the PRV is not plugged and that reducing ngs, valves, or other restricons are not
installed in the relief line?
POWER SUPPLY YES NO
Did you conrm that the electricity is supplied from 120 VAC, 60 Hz power source and is in a properly
grounded circuit?
Did you conrm 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 deaeraon process performed on the boiler?
74 Rinnai I-Series Condensing Boiler Solo Manual
IMPORTANT
• On inial startup of the system, it is necessary to put the boiler into a deaeraon 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 installaon. During the rst week of operaon, noises can be heard which
indicate the presence of air. The automac air vent in the boiler and air separator in the
heang system will remove the air, which means the water pressure will reduce some
during this period; therefore, addional water is necessary to maintain proper pressure in
the heang system. Water pressure needed for operaon:
− The boiler is in normal operaon between 17 - 26 PSI.
− Below 7.3 PSI, the boiler will have an error code (E430 diagnosc code will be present
on the controller display) and will not operate. Increasing the heang system water
pressure is necessary for operaon.
− Between 7.3 - 13 PSI, operaon will be limited (E430 diagnosc code will be present
on the controller display).
− The maximum pressure permied inside the heat exchanger is 45 PSI.
− The pressure relief valve supplied with the boiler is rated to 30 PSI.
Topics in this secon
• Start-Up Informaon
• Control Panel
• Basic Operaon Sengs
• Parameter Sengs
• Outdoor Reset Control
• Diagnosc Codes
• Forced Hi/Lo Fire Modes
12
Rinnai I-Series Condensing Boiler Solo Manual 75
❶
❷
❸
❹
❺
❻
❼
MODE
Eco
❽
MODE
Selects various
boiler sengs.
Up/Down
Arrows
Scrolls through
available menu
opons including
adjusng the
temperature.
Central Heang
From the factory, this opon is
turned o by default. The
boiler runs o thermostat
inputs on the control board.
For any adjustments, contact a
trained and qualied
professional for seng
assistance. Adjustments must
be made by a trained and
qualied professional for this
mode to operate correctly.
Indirect Tank On
Press to run the boiler in
DHW with Indirect Tank
mode.
Switching Operaon Mode
Press to switch between
DHW (Indirect Tank) and
CH for temperature seng.
Select Buon
Press to select the opon
in the display window.
❶
❷
❸
❹
❻
❼
Display Window
Displays boiler status
informaon.
See Display Window
secon for more
informaon.
❽
❺
Eco
Selects Eco or
Comfort
operaon mode.
❾
❿
❾
❿
CH Buon LED
When the LED light above
the CH buon is
illuminated, CH mode is
acve.
Indirect Tank Buon LED
When the LED light above
the Indirect Tank buon is
illuminated, Indirect Tank
mode is acve.
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 Heang Mode Acve
Maintenance Mode Icon
Appears when the boiler is in
Parameter Sengs Mode, Deaeraon
Mode, Performance Data Mode, Error
History Mode, etc.
Outdoor Temperature Sensor
Connected
❶
❷
❸
❹
❺
❻
Freeze Protecon Acve
Eco Seng Acve
(When no icon is present, Comfort
Mode is acve.)
Indirect Tank
Blinking: Operaon is occurring.
Light is On: Indirect Tank temperature
is sased.
“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
Diagnosc Informaon
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 acvates, the target supply temperature for the CH system
will not follow the target temperature set on the controller.
• When the boiler is in operaon, pressure and temperature are alternately displayed on
the controller.
Press the Select buon
to conrm the
temperature.
This temperature seng
is displayed for a few
seconds and then returns
to standby mode.
Press the Switch
Operaon Mode buon
unl the Central Heang
Acve buon appears on
the home screen.
MODE
Eco
20
PSI
Adjust the temperature
with the Up or Down
arrows unl the
appropriate temperature
is displayed.
MODE
Eco
140
°F
MODE
Eco
180
°F
The Central Heang (CH) setpoint temperature is not adjustable in outdoor reset control unless the
custom heang 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 informaon, see secon “12.4.1 Parameter Sengs Table” > Parameter 01 >
Selecon “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
buon is not illuminated, press the
Indirect Tank buon.
If the LED above the Indirect Tank
buon is illuminated, proceed to
Step 2.
Adjust the temperature with the Up
or Down arrows unl the
appropriate temperature is
displayed.
MODE
Eco
20
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 Operaon Mode
buon unl the Indirect Tank icon
appears on the home screen.
MODE
Eco
20
PSI
Press the Select buon to conrm 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 acve.
Central Heang Eco mode is a gas saving funcon 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 operaon, Eco mode will turn the space
heang o when the return water temperature is close to the target setpoint temperature for
ve minutes every 15 or 30 minutes depending on the seng of Parameter 48.
• Comfort Mode (Eco icon does not illuminate)
The boiler will operate via a call for heat from the thermostat or the heang need for the CH
buon dependent on the selecon made on DIP Switch 2. This mode will use more gas but will
provide a more consistent home heang temperature.
By default, Eco mode is enabled (turned on). To enable (turn on) comfort mode, press the Eco
buon on the controller.
Comfort Mode
The Eco icon will not illuminate
when Comfort Mode is acve.
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 buon.
1: F
Press the Select buon.
1:F
MODE
Eco
Press the Mode buon
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 buon.
2: OFF
MODE
Eco
Rinnai I-Series Condensing Boiler Solo Manual 81
To turn the child lock funcon on or o, follow the steps below.
• When Child Lock mode is enabled, the only funcon available is to turn o Central
Heang (by pressing the Central Heang buon on the controller); this occurs only if
DIP switch 2 is set to the ON posion. See secon “12.3.8 PC Board DIP Switches” for
more informaon.
• If using mulple controllers, Child Lock can be set only on the controller that has
priority.
• If a buon is pressed when the Child Lock funcon is engaged, “LOC” will be
displayed on the controller.
IMPORTANT
MODE
Eco
Press the Mode buon
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 buon.
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 connuing to hold
the (Down) buon,
press and hold the
Indirect Tank buon
(press and hold both
buons down at the
same me).
Press and hold the
(Down) buon for
two seconds.
Use the (Up) and
(Down) buons to
scroll to the desired
performance data
number described in
the Performance Data
Table in this secon.
To exit performance data:
While connuing to hold the
(Down) buon, press and hold the
Indirect Tank buon (press and hold
both buons down at the same
me).
120
°F
no. 01
no. 04
120
The data for the
performance number
automacally 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 addional
informaon.
Unit of measurement (°F/°C, PSI/bar) will vary depending on unit of measure selecon.
IMPORTANT
# DATA UNIT
01
Water Pressure PSI/bar
03
Supply Temperature °F/°C
04
Return Temperature °F/°C
05
Freeze Protecon Temperature °F/°C
06
Exhaust Temperature °F/°C
11
Fan Frequency Hz
17
Venturi Posion 0=Closed, 1=Open
18
Venturi Cycles x100
20
Pump Cycles x100
21
Pump Hours x10 Hours
22
Pump for Boiler 0=OFF, 1=ON
23
Pump for System (Pump 1) 0=OFF, 1=ON
24
Pump for Indirect Tank (Pump 2) 0=OFF, 1=ON
30
Indirect Tank Thermistor Temperature °F/°C
31
Outdoor Temperature °F/°C
40
Energizaon Hours x100 Hours
41
Combuson Hours x10 Hours
42
Combuson Cycles x100
45
Commissioning Cycles x1
84 Rinnai I-Series Condensing Boiler Solo Manual
Item # PC Board Switch # Primary Funcon Notes
1 Buon 1 Forced Hi/Low Fire
Modes
Refer to secon “12.7 Forced Hi/Low Fire
Modes”
2 Buon 2 Deaeraon Mode
Refer to secon “10. Commissioning”
3 Buon 3 Data Transfer Mode This is for transferring PCB data when
replacing the PCB. Refer to the instrucons
included in the replacement parts.
4 Buon 4
(Red Buon)
Parameter Sengs
Refer to secon “12.4 Parameter Sengs”
5 Dip Switch Dip Switch Sengs
Refer to secon “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 #
Funcon Descripon 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
Heang Buon
Thermostat Used Central Heang
ON buon used.
Boiler res based
on return water
temperature
3 Indirect Tank Enables the Indirect Tank
Funcon for Pump 2
ON
(Pump 2 Operates
as an Indirect Tank
Pump)
OFF (Pump 2
Operates at a CH
Zone Pump)
4 Indirect Tank
Thermistor/
Thermostat Selecon
Selects the method of
controlling the indirect
tank
Thermistor Thermostat
5 Gas Valve Solenoid Shuts down the
integrated solenoid gas
valve manually
Normal Operaon Fixed Closed
(prevents boiler
operaon)
6 Altude Seng
Depends on Altude
(See secon “12.3.9 Altude” for
specic values)
Sets the appropriate
elevaon of the boiler
installaon
7 Altude Seng
8 Vent Type Selecon
Selects the venng
material used. The boiler
is set from the factory to
be installed in a PVC
venng system. If CPVC,
PP, or other approved
venng is used, this
seng may be adjusted.
See secon “5.4 PVC
Venng Safety Switch” for
more informaon.
PVC
Higher
Temperature
Exhaust Vent
Material (PP,
CPVC, or
Stainless Steel)
86 Rinnai I-Series Condensing Boiler Solo Manual
To change the altude, 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 altude sengs 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
seng for high altude.
IMPORTANT
DIP Switches
PC Board
ON
OFF
Rinnai I-Series Condensing Boiler Solo Manual 87
Thermostat Usage (Default Seng)
This is the default seng for the boiler. This seng enables the boiler to operate in CH from a call
for heat from the room thermostat or zone controller. In this seng, the Central Heang buon is
not funconal except as an Error Reset or other seng.
This seng enables the boiler to operate via the Central Heang buon being acve
(illuminated). While the Central Heang buon is ON, the boiler operates
connuously or unl 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 seng
should be disabled when CH is no longer seasonally needed.
To select Thermostat Usage or the Central Heang buon, 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 posions
• ON - Central Heang ON buon used. Boiler res based on return water temperature
• OFF (Default) - Thermostat Used
4. Press the CH buon on the controller display. The boiler is now in CH mode.
ON
OFF
DIP Switches
PC Board
Pump Linkage with CH Mode On
When CH Mode is acve, 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
Seng Descripon
Selecon
A b
41
Linked Operaon Between Main Boiler Pump and CH Pump 1
No
Yes (Linked
Together)
This parameter is only in use when DIP switch 2 is in the ON
posion. This enables the linked operaon 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 posion, the pumps are automacally linked.
Central Heang
buon
Central Heang Buon
IMPORTANT
Central Heang Mode on the I-Series Boiler is not designed for typical room thermostat control
systems. Central Heang Mode runs the pump(s) and heat constantly and ignores room thermostat
input. This mode may/will overheat zones not equipped with constant recirculaon temperature
control (such as thermostac 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 buon on the PC Board.
4. Press and hold the red buon for ve seconds.
5. Press the Mode buon on the controller.
6. Press the (Up) or (Down) arrows to select a
parameter seng number.
Then, press the Select buon.
8. To exit parameter sengs and enter normal operaon mode, press either the red buon on
the PC Board or the Mode buon on the controller.
7. Press the (Up) or (Down) arrows to change
the selecon for the seng number (such as 30-A or
30-b).
Then, press the Select buon.
Press and Hold
Red Buon
for Five Seconds
PC Board
01-A
30-A
30-
Rinnai I-Series Condensing Boiler Solo Manual 89
Parameter
Number
Seng Descripon
Selecon
A b C d
00
Pressure Indicaon 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 seng to "No."
01
Outdoor Reset Curve
Curve
1
Curve
2
Curve
3
Curve
4
This parameter is available when Dip Switch 1 is
in the OFF (default) posion. Select the proper
curve from below. See secon “12.5 Outdoor
Reset Control” for more informaon.
Curve 1: Standard baseboard, high eciency 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.
02
Boost
No
30
Minutes
60
Minutes
This parameter is available when Dip Switch 1 is
in the OFF (default) posion.
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.
03
Maximum Outdoor Temperature the Boiler will
Fire in CH Mode
No
Maximum
77°F
(25°C)
This parameter is available when DIP switch 1 is
in the OFF (default) posion.
This sets the maximum outdoor temperature
the boiler will re in CH mode. This can prevent
the boiler from ring in warm outdoor
temperatures.
Connued on next page
90 Rinnai I-Series Condensing Boiler Solo Manual
Parameter
Number
Seng Descripon
Selecon
A b C d
30
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 sengs 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)
Seng
Temperature
+18°F
(+10°C)
Seng
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 sengs as
appropriate.
31
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 dierenal temperature
between the indirect tank setpoint temperature
and thermistor reading. The smaller the value,
the more frequently the indirect tank will call
for heat.
Connued on next page
Rinnai I-Series Condensing Boiler Solo Manual 91
Parameter
Number
Seng Descripon
Selecon
A b C d
32
Indirect Tank Operaon Opon
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
applicaon.
33
Indirect Tank Simultaneous Heang
Indirect
Tank
Priority
Simultaneous
Heang 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 operaon of the indirect tank
heang 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 Heang 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 transion
to Indirect Tank Priority.
34
Indirect Tank Priority Time
60
minutes
40
minutes
90
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. Aer this period of me
passes, the indirect tank will cease to be heated
and central heang will have priority. If there is
sll an indirect tank demand aer 60 minutes
passes of CH priority, indirect tank priority will
begin again.
35
CH Temperature Limitaon to Allow
Simultaneous Operaon 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 selecng "Simultaneous Heang
with Indirect Tank and CH" in Parameter 33.
This enables CH seng limitaon during
simultaneous heang. This can prevent
unintenonally supplying high temperature
supply water to low water heang temperature
applicaons such as oor heang. During
simultaneous operaon, the heang supply
temperature is based on the indirect tank
supply temperature. When "NO" is selected,
make sure that the CH system and heang
applicaon is designed to allow for the high
supply temperature.
92 Rinnai I-Series Condensing Boiler Solo Manual
Parameter
Number
Seng Descripon
Selecon
A b C d
40
Linked Operaon Between CH Pump 1 and 2
No
Yes (Linked
Together)
This parameter enables linked operaon
between the CH Pump 1 and 2. For example,
when T/T 1 is acve, both pump 1 and 2 are ON.
The T/T wire must be connected to the T/T1
connecon.
When it is desired to ulize DHW Recirculaon
via DIP switch 3, this parameter will not be
available. The DIP switch must be in the OFF
(default) posion for this parameter to be
enabled.
This seng is primarily for an applicaon that
requires two pumps for one zone, such as in use
with an injecon loop or similar system.
41
Linked Operaon Between Main Boiler Pump
and CH Pump 1
No
Yes (Linked
Together)
This parameter is only in use when DIP switch 2
is in the ON posion.
This enables the linked operaon 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 posion, the
pumps are automacally linked.
42
Main Pump Runs When the Target Temperature
is Achieved
Connuously Intervals
This selects the mode of the main pump running
when the target setpoint is achieved. This
seng is for whether running on intervals to
reduce pump operaon or connuously running
to reduce wait me to re-re. Intervals are 10
minutes ON and 30 minutes OFF.
43
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 seng is for whether stopping the external
pump from running to reduce pump operaon
me or it operates the same as the main pump
to enable remaining heat from the heat
exchanger to be delivered to the system.
44
External Pump Runs When Freeze Protecon is
in Operaon
Does Not Run Same as Main
Pump
(if selected,
hydraulic
separaon is
needed)
This selects how the external pump operates
when freeze protecon is in operaon. This
selects whether the pump will run to reduce the
pumps operaon me or operang 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
seng ON.
Rinnai I-Series Condensing Boiler Solo Manual 93
Parameter
Number
Seng Descripon
Selecon
A b C d
45
Freeze Protecon Level
Default
When boiler
is installed in
a Warm
Room
This selects the freeze protecon level. Selecng
“b” will prevent the boiler from operang in
freeze protecon mode more than believed
necessary.
46
The Dierenal Temperature from Ceasing Fire
to Firing Again
Normal Quick
How much temperature drop is permied by the
supply water thermistor before the boiler will re
again.
When selecng "Quick", the boiler will re more
frequently and achieve more temperature
control.
CH Seng 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)
47
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 aer the burner has
shutdown. This seng is to prevent frequent ON/
OFF operaon.
48
Heang Eco Mode On Time
30 Minutes 15 Minutes
The seng changes the on me of the heang
Eco mode. This mode enables greater energy
savings by reducing the length of me the boiler
is operang. The output temperature of the
boiler is slower in this mode.
49
Will the boiler shut down on a high return water
temperature
Yes No
This seng 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.
60
Not Available
Not Available
A0
Gas Type
Natural
Gas
Liquid
Propane
For selecng gas type when conducng gas
conversion.
A1
Not Available
Not Available
A2
Vent Material Used
PVC
Material
other than
PVC:
CPVC/PP/
Other
This selects the venng material used. The boiler
is set from the factory to be installed in a PVC
venng system. If CPVC, PP, or other approved
venng is used, this may be adjusted. See the
secon on PVC Safety Switch for more
informaon.
94 Rinnai I-Series Condensing Boiler Solo Manual
North Facing Wall
Outdoor Temperature
Sensor
Outdoor reset is a built-in funcon to help maximize the eciency of the boiler. The design of this
funcon is to adjust the target temperature of the boiler relave to the outdoor ambient
temperature via the four outdoor reset curve opons 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
arcial heat source. The sensor should then be wired back to the outdoor temperature sensor
terminal on the boiler. Refer to the following secons for more informaon.
Rinnai I-Series Condensing Boiler Solo Manual 95
Type of Heat Emier 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 emiers. These are basic guidelines; thus, check with
the emier manufacturer or consult your heang 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)
posion (this ensures the boiler will operate based on the outdoor temperature).
5. Set parameters 01 - 03 as appropriate for your applicaon (see Parameter Sengs Table for more
informaon).
Outdoor
Temperature Sensor
OFF
DIP switch 1 in OFF (Default) posion
PC Board
IMPORTANT
If DIP switch 1 is set to the OFF (default) posion, 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 Emier
1
(Default)
180°F (82°C) 122°F (50°C) Standard baseboard, high-
eciency 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 Seng temperature on the
controller
Seng 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 heang curves, which are dierent target temperature lines
dependent on the outdoor temperature. The selected curve should be based o of the type of heat
emier and the target temperature desired. The heang 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 secon “12.4 Parameter
Sengs”) and select parameter 01. Then, select the desired curve.
Parameter
Number
Seng Descripon
Selecon
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 seng of Parameter 01 aer a
connuous run me or an interval as selected in Parameter 02. The boost funcon is acve unl the
call for heat is sased or the boiler cycles o.
For example: In the case of selecng 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
connues operang with ring for 30 minutes, the target supply temperature will rise toward 180°F.
This control connues unl shut down.
80
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 seng (warm weather shutdown) enables the
boiler CH operaon to shut down when the outdoor temperature is higher than 77°F (25°C). This
mode can prevent the boiler from operang under warm condions unexpectedly.
Maximum outdoor temperature is selected by seng parameter number 03 to “77°F (25°C)” or
“No Maximum” (see secon “12.4 Parameter Sengs” for more informaon).
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 Diagnosc Codes
To display diagnosc codes, follow the steps below.
1. Press and hold the Indirect Tank buon for two
seconds, and then the (Up) buon (hold both
buons at the same me).
2. The last nine maintenance codes display and ash
one aer the other.
3. To exit diagnosc codes and return the boiler to
normal operaon, press and hold the Indirect
Tank buon for two seconds, and then the
(Up) buon (hold both buons at the same me).
100
Air Supply or Exhaust Blockage/Condensate
Trap is Full
• Fan current inial check error.
• Ensure condensate line and trap is not
blocked.
• Ensure internal air lter is clean with no
obstrucons.
• Ensure high altude seng is set properly
(See High Altude Seng).
• Ensure combuson air and exhaust vents
are not blocked and the approved venng
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 Ignion (Unit Not Turning On)
• Ignion 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 operaonal.*
• Ensure the venng 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 orice installed is correct for the
gas system the unit is installed in.
• Check ame rod voltage to ground during
ignion.
* See “Electrical Diagnoscs” 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 aempt any acon that they
are not qualied to perform.
Reset Diagnosc Codes
To reset diagnosc codes, either the Central Heang or
the Indirect Tank buon on the control panel will be
blinking. Press the buon to reset the code.
Diagnosc Codes
IMPORTANT
Some diagnosc codes may not reset by pressing
the CH or Indirect Tank buons. If this is the case,
contact your service provider for troubleshoong
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 venng 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 ignion.
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 condion.
• The surface of the heat exchanger may
turn to a black color as stainless steel is
tempered even in normal condions.
This does not indicate an abnormal
condion.
• Check for damage on the exhaust, seal,
and venng.
• Ensure the parameter A0 corresponds to
the gas type the unit is installed in.
• Ensure the gas orice is the proper
orice for the gas type in use.
• Ensure deaeraon has been performed.
150 Venturi Control
• Venturi operaon error.
• Ensure the venturi motor is operang
correctly.*
• Replace the gas valve assembly.
170
Venturi Blockage
• Check the venturi and silencer for
blockage.
• Before reseng this error, check if the
condensate drain is block and if the
venng is connected properly.
* See “Electrical Diagnoscs” 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 locaon.
• Ensure the system is plumbed properly.
• Check the supply temperature for tank is
higher than tank seng 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.
• Conrm wire connecons and harnesses
are good.
• Ensure the condensate reservoir is
empty and condensate pump is
operaonal.
310
Freeze Protecon 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 seng.
• 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 sll appears, check the return
thermistor.
• Check the exhaust duct, seal, and
venng for damage.
610
Combuson Fan
• Check the motor wire harness for loose
or damaged connecons.
• Measure resistance and voltage of
motor wire harness.*
• Ensure the combuson 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 posion (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 operaon.
• If the temperature is too low, an error
will occur.
• Check if there is freezing in the boiler or
CH system.
* See “Electrical Diagnoscs” 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 posion.
• 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 unl 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 deaeraon 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 soware versions of the
board and operaon board do not match.
FFF
Maintenance Indicator
• This code is a placeholder in diagnosc
code history indicang a service provider
performed maintenance or service.
• Enter this code aer performing service
by pressing and holding the Up buon,
then press and hold the Down buon,
and then press the Indirect Tank buon
simultaneously. FFF will appear on the
display.
No
Code
Boiler does not start heang with a heang
demand present
• Supply temperature or return
temperature inside the boiler may be too
hot.
• Ensure the pump operates properly.
No
Code
Boiler does not start heang the indirect
tank, although the indirect tank is calling for
heat
• Aer the tank priority me (Parameter
34) passes, the boiler will be in heang
priority for 60 minutes.
No
Code
The boiler does not operate with the CH
seng buon
• If DIP switch 2 is OFF, CH operaon will
operate via the room thermostat.
* See “Electrical Diagnoscs” on Technical
Data Sheet located on inside front cover of
boiler.
No
Code
Supply temperature is dierent
from the seng temperature on
the controller
• During outdoor sensor control,
the supply temperature will
vary dependent on the outdoor
temperature.
• During simultaneous operaon
of an Indirect Tank and CH, the
supply temperature for CH is
based on Indirect Tank control.
No
Code
CH capacity is insucient
• Ensure the parameters are
properly set for the installaon.
• During simultaneous operaon
of an Indirect Tank and CH, ow
volume to heang can be
reduced.
No
Code
Pump or fan even with no demand
• The boiler may start or operate
the pump for freeze protecon
operaon.
• The pump may intermiently
operate to prevent it from
becoming stuck.
Up and Down
Press the
Indirect Tank
buon
E;FFF
Rinnai I-Series Condensing Boiler Solo Manual 103
5. Press the right-side, black buon again. The
controller now displays FH (the boiler is now
in forced high condion).
6. To enter back into normal operaon, press the right-side, black buon. The controller now
displays normal operaon mode.
This secon should be performed by a licensed professional. Consumers
should never aempt any acon that they are not qualied 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 buon.
4. The controller displays FL (the boiler is now
in forced low re condion).
DIP Switches
Buon
PC Board
fL
fH
WARNING
104 Rinnai I-Series Condensing Boiler Solo Manual
13
• Maintenance is required to
maintain safe operaon 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
operaon aer servicing.
• Keep the boiler area clear and free
from combusble 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 isolaon valve
immediately below the boiler
or by turning o the water
supply to the building.
Topics in this secon
• Owner Maintenance
• Licensed Professional Maintenance
• Test the Ignion Safety Shut O
Device
If you encounter a problem that is
dicult to solve, stop the operaon
and immediately contact a licensed
professional.
MONTHLY
Boiler Area
• Verify the area is free of combusble
materials, gasoline and other
ammable vapors and liquids.
• Verify the area is clean from dust and
obstrucons
• Verify the air intake area is free of any
contaminants listed in the boiler
Installaon and Operaon 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
condensaon piping for leaks. Look
for signs of leaking lines or corrosion.
• Conrm the condensaon line is not
blocked. If a condensaon drain pump
is used, conrm the condensaon
drain pump operates correctly.
Venng
• Verify the boiler vent discharge and
air intake is clean and free of
obstrucons.
• Check for leakage, damage, or
deformaon of venng.
Boiler
• Verify the boiler is free from any
abnormal situaons, such as
diagnosc error codes, loud noises,
leakage or other potenal issues.
• Check that the pressure on the
controller display or external pressure
gauge indicates 17-26 psi (117-180
kPa).
WARNING
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 lubricaon).
Controller Clean by using a so, damp cloth. Do not use solvents.
Pressure Conrm the pressure is within the proper range (between 17-26 PSI). If the
pressure is lower than the specied range, add water unl 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 precauons with regard to the discharge of potenally
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.
Heang System
Dirt Trap
Clean annually. Be sure to close the shut o valves under the boiler. Aer
cleaning and installing the lter, purge the air.
Expansion Tank Perform annual checks as recommended by the manufacturer to ensure proper
operaon.
Condensaon
Trap
Check if the trap contains sediment. To remove sediment, unplug the boom 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
connecon to break.
Condensaon
Drain
• Conrm the condensaon drain line is not blocked or clocked.
• Ensure the condensaon drain pump (if ulized) 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 potenal freeze damage.
Tesng 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 Conrm the water quality. Refer to secon “4.4.1 Water Quality Guidelines” to
determine if the water needs to be treated or condioned. 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 aect or damage the heat exchanger. Water that contains
chemicals exceeding the levels required aect and damage the heat exchanger.
Replacement of the heat exchanger due to water quality damage is not covered
by the warranty.
Snow
Accumulaon
• Verify the area around the ue terminal is free of snow and ice. The boiler will
not funcon properly if the combuson air or exhaust vent pipes are impeded
(blocked or parally blocked) by obstrucons.
• 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
Protecon
• Freeze protecon for new or exisng systems must use glycol that is specially
formulated for this purpose. This includes inhibitors, which prevent the glycol
from aacking the metallic components. The glycol should be for mul-
metallic components. Reference secon “14.1 Approved Cleaners, Inhibitors
and Anfreezes” in the Appendix for an approved list of system cleaners,
inhibitors, and anfreezes.
• Check that the system uid is correct for the glycol concentraon and inhibitor
level. The system should be tested at least once a year and as recommended
by the producer of the glycol soluon. The allowed maximum concentraon is
40 percent.
Coast Area
Installaons
Installaons located in or near coastal areas may require addional 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 operaon and repaired or
replaced, if necessary.
Cleaning It is imperave that control compartments, burners, and circulang 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 volale
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 operaon aer servicing. The burner must ame evenly over the enre surface when
operang correctly. The ame must burn with a clear, blue, stable ame. See the parts breakdown
of the burner for the locaon of the view ports. The ame paern 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
Inspecon:
• To maintain opmum 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 qualied
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
protecon is
acve, this icon will
be illuminated.
Freeze Protecon Operaon
When the boiler detects low outdoor ambient
temperatures, the boiler will begin its freeze
protecon operaon. The freeze protecon
operaon can protect the boiler from freezing
down to as low as –22°F (-30°C) outdoor
ambient temperature.
When freeze protecon is in operaon, 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 protecon to funcon. The internal
freeze protecon will not necessarily prevent
the system piping from freezing.
During freeze protecon operaon, 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.
20
PSI
108 Rinnai I-Series Condensing Boiler Solo Manual
4. Place the boiler in operaon by a call for heat.
5. The boiler iniates one start-up aempt and mulple restart aempts.
Aer the last start-up aempt, the boiler locks out and the gas valve shuts o. Code 110
appears on the controller display which indicates ignion system safety shuto.
6. Reconnect the wiring connecon to the ame rod. Be careful not to touch the inside of the
wiring connecon. To reset the error, press the Central Heang buon. 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 connecon 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 operaon.
Do not touch the inside of the wiring connecon while it is disconnected.
WARNING
Boiler front side
Remove wiring
connecon
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
• Sennel X400
Approved System Inhibitors:
• Noble Noburst AL Inhibitor
• Rhomar Pro-tek 922
• Sennel X100
Approved System Anfreezes:
• Chem Frost 100%
• Fernox Alphi 11
• Hall-Chem Solar II
• Noble Noburst AL
• Rechochem Recofreeze AL
• Rhomar RhoGard Mutli-Metal (AL safe)
• Sennel X500
Below is a list of approved system cleaners, inhibitors, and anfreezes for use in hydronic plumbing
systems ulizing Rinnai boilers.
IMPORTANT
• If replacing a boiler, add system cleaners while the old boiler is installed and operate the old
boiler for heang for several days to most eecvely 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.
14
110 Rinnai I-Series Condensing Boiler Solo Manual
When replacing an exisng boiler, the
heang 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 causc nature
which could damage the heat exchanger.
Reference secon “14.1 Approved
Cleaners, Inhibitors and Anfreezes” in the
Appendix for an approved list of system
cleaners, inhibitors, and anfreezes.
Instrucons
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 installaon is a zone system (ulizes
mulple 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
instrucons.
7. The boiler and system may now be lled
through the ll valves.
8. If using glycol, ensure it is an approved
glycol and rao.
9. Verify water quality is within the stated
values in secon “4.4.1 Water Quality
Guidelines.”
IMPORTANT
• Water should be within guidelines for
water quality listed in secon “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 secon “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 applicaons shown in this secon.
IMPORTANT
Primary/secondary piping is necessary in the following applicaons:
• When using external pumps
• Large zoned systems
• High ow applicaons
• Systems with high dierenal pressures
• Systems with high pressure drops
For pressure curve informaon, refer to the following secon in the Appendix: “14.7 CH
Pressure Drop and Flow Curve”
This picture illustrates a suggested
arrangement. Some of the ngs
are oponal.
Radiator with
Thermostatic
Heads
112 Rinnai I-Series Condensing Boiler Solo Manual
Pump
Thermostat
PC Board Wiring
for the above
applicaon example
External pump
connecon 1
T/T 1 Connecon
Boiler
Pump
Boiler Pump
Connecon
Rinnai I-Series Condensing Boiler Solo Manual 113
Zone Control
Thermostat 1
Pump Thermostat 2
PC Board Wiring
for the above
applicaon example
T/T 1 Connecon
Boiler
Pump
Boiler Pump
Connecon
114 Rinnai I-Series Condensing Boiler Solo Manual
Thermostat 2
Pump 1
Thermostat
PC Board Wiring
for the above
applicaon example
External pump
connecon 1
T/T 1 Connecon
T/T 2
Connecon
Boiler
Pump
Boiler Pump
Connecon
Pump 2
External pump
connecon 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
applicaon example
T/T 1 Connecon
Boiler
Pump
Boiler Pump
Connecon
116 Rinnai I-Series Condensing Boiler Solo Manual
Pump 1
External pump connecon 1
For this applicaon, ensure
Parameter 41 is set to “b”
for linked operaon
between the main boiler
pump and CH pump 1.
PC Board Wiring
for the above
applicaon example
Boiler
Pump
Boiler Pump
Connecon
Note: Heat emier must be
radiator with thermostac
heads.
Rinnai I-Series Condensing Boiler Solo Manual 117
This boiler is congured for Natural Gas
only. To convert to Propane Gas, follow the
instrucons in this secon.
For installaons in Canada, the conversion
shall be carried out in accordance with the
requirements of the provincial authories
having jurisdicon and in accordance with
the requirements of the CGA-B149.1,
Natural Gas and Propane Installaon Code.
The appliance must be installed in
accordance with:
• Local codes or, in the absence of local
codes, the Naonal Fuel Gas Code, ANSI
Z223.1/NFPA 54 and/or CSA B149.1,
Natural Gas and Propane Installaon
Code.
• The Manufactured Home Construcon
and Safety Standard, Title 24 CFR, Part
3280 and/or CAN/CSA Z240 MH Series,
Mobile Homes, Series M86 /
Manufactured Home Construcon and
Safety Standard, Title 24 CFR.
IMPORTANT
• Before you get started, conrm 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
reect the gas type.
The gas supply shall be shut o prior to
disconnecng the electrical power, before
proceeding with the conversion.
CAUTION
Do not touch any other areas on the PC
board other than the described buons
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 qualied service agency in
accordance with the manufacturer’s
instrucons and all applicable codes
and requirements of the authority
having jurisdicon. The informaon in
these instrucons must be followed
exactly to minimize the risk of re or
explosion or to prevent property
damage, personal injury or death. The
qualied service agency is responsible
for the proper installaon of this kit.
The installaon is not proper and
complete unl the operaon of the
converted appliance is checked as
specied in the manufacturer’s
instrucons supplied with the kit.
• Failure to correctly assemble the
components according to these
instrucons may result in a gas leak or
explosion.
WARNING
• Orice
• Conversion Rang Plate
• Phillips Head Screwdriver (eld-supplied)
118 Rinnai I-Series Condensing Boiler Solo Manual
1. Conrm 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 orice cover plate on top poron of gas valve (Figure 1).
6. Remove the three screws securing the orice cover plate (Figure 1).
7. Remove the plasc orice from the housing (Figure 2).
8. Install the new inner and outer gaskets onto the new orice (Figure 2).
9. Install new orice into housing (check the gas type displayed on the orice: Red orice is LPG; Blue
orice is NG).
10. Conrm gasket is correctly in place (the groove side of gasket must be facing outwards) (Figure 2).
11. Reinstall the orice 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 secon (14.4.3 Adjust Parameter Sengs).
Figure 1
Orice
Cover
Plate
Three screws
Grooved side of outer gasket MUST face outwards.
Cover
Plate
Inner
Gasket
Orice
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 buon on the PC Board (Figure 3).
3. Press and hold the red buon for ve seconds (Figure 3).
Figure 3
4. Press the Mode buon on the controller.
5. Scroll to parameter AO and press the
Select buon.
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 buon.
7. Parameter sengs are complete. To enter normal operaon mode, press the Mode buon.
Press and Hold
Red Buon
for Five Seconds
NATURAL GAS
PROPANE
PC Board
01-a
A0-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 operang sequence:
a. When you press the ON/OFF buon, the LED display will illuminate, the combuson fan
will begin to run if water is owing, and the spark will ignite the main burner.
b. This boiler has an automac ignion system. When the main burner has lit, the “In Use”
lamp will glow red and the spark will stop.
2. Visual inspecon of ame:
a. Check that the burner ames are operang normally. The ame can be seen through the
circular window above the burner. When operang normally, the burner ame should
burn evenly over the enre 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
Combuson analysis must be performed by a trained and
qualied professional.
To perform a combuson analysis:
1. Remove the boiler’s front panel by removing the four screws
that secure the panel.
2. Remove the clamp holding the combuson analysis port cap.
3. Remove the combuson analysis port cap and insert the gas
analyzer probe into the port.
4. Put the boiler into operaon in forced high re or low re as
necessary (see secon “12.7 Forced Hi/Lo Fire Modes”).
Measure CO
2
or O
2
, as applicable, in the exhaust system.
5. Aer measurement, remove the gas analyzer probe, place
the combuson analysis port cap back on, and reinstall the
clamp to secure the cap in place.
Insert gas analyzer probe into
combuson 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 informaon 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 venng of the remaining appliances connected to it.
The instrucons shall include the test procedure set forth below:
At the me of removal of an exisng boiler, the following steps shall be followed with each other
appliances remaining connected to the common venng system are not in operaon.
1. Seal any unused openings in the common venng system.
2. Visually inspect the venng system for proper size and horizontal pitch and determine
there is no blockage or restricon, leakage, corrosion and other deciencies which could
cause an unsafe condion.
3. Insofar as is praccal, close all building doors and windows and all doors between the
space in which the appliances remaining connected to the common venng system are
located and other spaces of the building. Turn on clothes dryers and any appliance not
connected to the common venng 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 operaon the appliance being inspected. Follow the lighng instrucons. Adjust
thermostat so appliance will operate connuously.
5. Test for spillage at the dra hood relief opening aer ve minutes of main burner
operaon. Use the ame of a match or candle, or smoke from a cigaree, cigar, or pipe.
6. Aer it has been determined that each appliance remaining connected to the common
venng system properly vents when tested as outlined above, return doors, windows,
exhaust fans, replace dampers, and any other gas-burning appliance to their previous
condion of use.
7. Any improper operaon of the common venng system should be corrected so the
installaon conforms with the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the
Natural Gas and Propane Installaon Code, CAN/CSA B149.1. When resizing any poron of
the common venng system, the common venng system should be resized to approach
the minimum size as determined using the appropriate tables in Chapter 13 of the
Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane
Installaon 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 Massachuses (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 residenal purposes, including those owned or operated by
the Commonwealth and where the side wall exhaust vent terminaon is less than 7 above
nished grade in the area of the venng, including but not limited to decks and porches, the
following requirements shall be sased:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the me of installaon of the side wall
horizontal vented gas fueled equipment, the installing plumber or gaser shall observe that a
hard wired carbon monoxide detector with an alarm and baery back-up is installed on the
oor level where the gas equipment is to be installed. In addion, the installing plumber or
gaser shall observe that a baery operated or hard wired carbon monoxide detector with an
alarm is installed on each addional 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 qualied licensed professionals for the installaon 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 ac, the hard wired carbon monoxide detector with alarm and baery
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
compleon of installaon, 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
baery 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 cered.
3. SIGNAGE. A metal or plasc idencaon 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 heang 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 installaon unless, upon inspecon, 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 Residenal Applicaons Commercial Applicaons
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 wrien installaon instrucons, 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 installaon may void this Limited
Warranty. It is strongly recommended that you use a trained and qualied professional who has
aended a Rinnai installaon training class before installing this boiler. This Limited Warranty is
subject to the condions that the Rinnai boiler has been installed and proper maintenance has
been performed, according to the Installaon and Servicing Instrucons, by a professional heang
contractor. Proof of the required service and maintenance must be kept in the provided Rinnai
Installaon, 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 installaon. This Limited Warranty only extends to the rst /
original installaon of the product and terminates if the product is moved or reinstalled at a new
locaon.
* 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 defecve 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 discreon. Rinnai does not
authorize any person or company to assume for it any obligaon or liability in connecon 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 discreon. 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 installaon, use or operaon;
or damaged during return shipping.
Rinnai I-Series Condensing Boiler Solo Manual 127
How Do I Get Service? You must contact a trained and qualied professional for the repair of a
product under this Limited Warranty. For the name of a trained and qualied 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 Internaonal 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 Registraon by Rinnai will constute proof-of-purchase for
this product. Registraon of product installed in new home construcon may be veried with a
copy of the closing papers provided by the inial home buyer. However, Registraon 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
operang dicules due to the following:
• Accident, abuse or misuse
• Alteraon
• Misapplicaon
• Force majeure
• Improper installaon (such as but not limited to inadequate water quality, condensate
damage, improper venng, 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 anfreeze or other chemical addives in
the boiler system
• Installaon of the boiler in a heang system where polybutylene pipe without an oxygen
barrier is used
• Any installaon that is not closed loop or where oxygen may enter the heang 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
parcles, plasterboard parcles, 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 applicaon 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.
Limitaon on Warranes — No one is authorized to make any other warranes on behalf of Rinnai
America Corporaon. Except as expressly provided herein, there are no other warranes,
expressed or implied, including, but not limited to warranes of merchantability or tness for a
parcular purpose, which extend beyond the descripon of the warranty herein.
Any implied warranes of merchantability and tness arising under state law are limited in
duraon to the period of coverage provided by this Limited Warranty, unless the period provided
by state law is less. Some states do not allow limitaons on how long an implied Limited Warranty
lasts, so the above limitaon may not apply to you.
Rinnai shall not be liable for indirect, incidental, special, consequenal or other similar damages
that may arise, including lost prots, damage to person or property, loss of use, inconvenience, or
liability arising from improper installaon, service or use. Some states do not allow the exclusion or
limitaon of incidental or consequenal damages, so the above limitaon may not apply to you.
This Limited Warranty gives you specic legal rights, and you may also have other rights which vary
from state to state. www.rinnai.us/warranty
800000112(01)
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