Rinnai M060C, M090C, M120C, M160C User Guide

Page 1

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

If the informaon in these instrucons is not followed exactly, a re or explosion may result causing property damage, personal injury, or death.

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

• WHAT TO DO IF YOU SMELL GAS

− Do not try to light any appliance.

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

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

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

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

INSTALLATION AND OPERATION MANUAL

M-Series Condensing Boiler

Wall-Mounted, Gas-Fired Combi Boiler

8U513700/06.18 Changes Reserved

Central Heang and Domesc Hot Water

1-800-621-9419

rinnai.us

WARNING

Cered to ANSI Z21.13 and CSA 4.9

WARNING

MODELS

M060C M090C M120C M160C

Page 2

2 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Contents

READ AND SAVE THESE INSTRUCTIONS

1 Welcome ........................................................ 3

2 Safety ............................................................. 4

Safety Symbols .................................................... 4

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

3 About the Boiler ............................................. 6

Components ........................................................ 6

Specicaons ...................................................... 7

Dimensions .......................................................... 8

Accessories .......................................................... 9

How to Remove the Front Panel ...................... 10

4 Installaon ........................................................ 11

Installaon Overview ........................................ 11

Installaon Guidelines ....................................... 12

Unpack the Boiler .............................................. 13

Choose an Installaon Locaon ........................ 14

Mount the Boiler to the Wall ............................ 16

5 Venng ......................................................... 17

Venng Guidelines ............................................ 17

Venng Installaon Sequence .......................... 18

Terminaon Consideraons .............................. 18

Venng Opons................................................. 19

6 System Piping .............................................. 38

Piping for Central Heang Systems ................... 38

Piping for DHW Systems.................................... 42

Connect the Condensate Drain Line ................. 44

Connect the Pressure Relief Valves................... 46

7 Gas Supply .................................................... 47

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

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

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

Test the Ignion Safety Shut O Device ........... 51

8 Power Supply ................................................ 52

Guidelines ......................................................... 52

Electrical Connecons ....................................... 53

Post-Power Supply Connecon Checklist ......... 53

9 Commissioning ............................................. 54

Safety Precauons ............................................ 54

Instrucons ....................................................... 54

10 Post-Installaon Checklist ............................. 57

11 Operaon ..................................................... 59

Start-Up Informaon ........................................ 59

Control Panel .................................................... 60

Boiler Display .................................................... 61

Basic Operaon Sengs ................................... 62

12 Maintenance ................................................. 74

Boiler Maintenance .......................................... 74

Flushing the Plumbing System for Central

Heang Systems ............................................... 75

13 Appendices ................................................... 77

Approved Cleaners, Inhibitors and Anfreezes 77

Boiler Parts ........................................................ 78

System Applicaon Examples ........................... 86

Gas Conversion ................................................. 92

Wiring Diagram ................................................. 96

Ladder Diagram ................................................. 97

Pressure Drop and Water Flow Curve ............. 98

Resistance/Temperature Table for Sensors ..... 99

Remove a Boiler From a Common Vent

System ............................................................ 100

Massachuses State Gas Regulaons ............ 101

Warranty ......................................................... 102

Page 3

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 3

For an approved list of system cleaners, inhibitors, and anfreezes, reference the following secon in the Appendix: Approved

Cleaners, Inhibitors and Anfreezes

If You Need Service

Contact your local dealer/distributor or call Rinnai Customer Care at 1-800-621-9419 Monday to Friday between 8 AM to 8 PM ET. Please have your full serial number or model number available for product- or service-related issues.

Thank you for purchasing a Rinnai M-Series Condensing Boiler. Before installing and operang this boiler, be sure to read these instrucons completely and carefully to familiarize yourself with the boiler’s features and funconality.

To The Consumer

• You must read the enre manual to properly

operate the boiler and to have regular maintenance performed.

• Keep this manual for future reference.

• As when using any appliance generang heat,

there are certain safety precauons you should

follow. See the Safety Precauons secon in this manual for detailed safety precauons.

• Be sure your boiler is installed by a licensed

installer.

• If installing in the state of Massachuses, you

must read the Massachuses State Gas Regulaons secon in this manual.

To The Installer

• A trained and qualied professional must

install the boiler, inspect it, and leak test it

before use. The warranty will be voided due to

any improper installaon.

• The trained and qualied professional should

have skills such as:

− Gas line sizing

− Connecng gas lines, water lines, valves,

and electricity

− Knowledge of applicable naonal, state,

and local codes

− Installing venng through a wall or roof

− Training in installaon of condensing

boilers. Training on Rinnai M-Series

Condensing Boilers is accessible at

www.trainingevents.rinnai.us.

• Read all instrucons in this manual before

installing the boiler. The boiler must be installed according to the exact instrucons in this manual.

• Proper installaon is the responsibility of the

installer.

• When installaon is complete, leave this

manual with the boiler or give the manual directly to the consumer.

Welcome

Acronyms and Abbreviaons

Following is a list of acronyms and abbreviaons used in this manual:

ANSI American Naonal Standards Instute

BTU Brish Thermal Unit

CH Central Heang Combi Combinaon (meaning the combinaon of

Central Heang and Domesc Hot Water)

DHW Domesc Hot Water GPM Gallons per minute LP Liquid Propane NG Natural Gas O2 Oxygen PP Polypropylene PSI Pounds per square inch W.C. Inches water column

For Your Records

Dealer Name: Dealer Phone #: Purchase Date: Serial #:

Located on boom le side of unit

QUICK REFERENCE

Page 4

4 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

• If the informaon in these instrucons is not followed exactly, a re or explosion may result causing property

damage, personal injury, or death.

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

• WHAT TO DO IF YOU SMELL GAS:

− Do not try to light any appliance.

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

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

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

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

• The warning signs in this manual are here to prevent injury to you and others. Please follow them explicitly.

WARNING

Indicates an imminently hazardous situaon which, if not avoided, will result in personal injury or death.

Indicates a potenally hazardous situaon which, if not avoided, could result in personal injury or death.

Indicates a potenally hazardous situaon which, if not avoided, could result in minor or moderate injury. It may also be used to alert against unsafe pracces.

Safety alert symbol. Alerts you to potenal

hazards that can kill or hurt you and others.

DANGER

CAUTION

WARNING

This manual contains the following important safety symbols. Always read and obey all safety messages.

Safety Symbols

Safety

Topics in this secon

• Safety Symbols

• Safety Precauons

Page 5

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 5

The following precauons apply to the installer and consumer. Read and follow all instrucons in this secon.

• Do not use an extension cord or adapter plug with this

appliance.

• Any alteraon to the appliance or its controls can be

dangerous and will void the warranty.

• Proper venng is required for the safe operaon of this

appliance.

• Flammable liquids such as cleaning solvents, aerosols,

paint thinners, adhesives, gasoline and propane must be handled and stored with extreme care. These ammable liquids emit ammable vapors and when exposed to an ignion source can result in a re hazard or explosion. Flammable liquids should not be used or stored in the vicinity of this or any other gas appliance.

• DO NOT operate the boiler without the front panel

installed. The front panel should only be removed for service/maintenance or replacing internal components.

• BURN HAZARD. Hot exhaust and vent may cause

serious burns. Keep away from the boiler. Keep small children and animals away from the boiler.

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

pipes leaving the boiler can be hot to touch.

• Do not store or use gasoline or other ammable vapors

and liquids in the vicinity of this or any other appliance.

• Install the vent system per local and naonal codes.

• Do not install this boiler above 10,200  (3,109 m).

• Do not obstruct combuson air to the boiler.

• Failure to properly vent this appliance can result in

death, personal injury and/or property damage.

• Rinnai recommends that every home have a carbon

monoxide (CO) alarm in the hallway near bedrooms in each sleeping area. Check baeries monthly and replace them annually.

• California law requires the following Proposion 65

warning to be provided:

WARNING

This product can expose you to chemicals including

Nickel compounds, Lead and Lead compounds which are

known to the State of California to cause cancer, birth

defects or other reproducve harm. For more

informaon, visit www.P65Warnings.ca.gov.

Safety Precauons

• Before operang, smell all around the appliance

area for gas. Be sure to smell next to the oor because some gas is heavier than air and will sele on the oor.

• Keep the area around the appliance clear and free

from combusble materials, gasoline, and other ammable vapors and liquids.

• Combusble construcon refers to adjacent walls

and ceiling and should not be confused with combusble or ammable products and materials. Combusble and/or ammable products and materials should never be stored in the vicinity of this or any gas appliance.

• Always check the water temperature before

entering a shower or bath.

• To protect yourself from harm, before performing

maintenance:

− Turn o the electrical power supply by

unplugging the power cord or by turning o the electricity at the circuit breaker. (The boiler controller does not control the electrical power.)

− Turn o the gas at the gas control, usually

located immediately below the boiler.

− Turn o the incoming water supply. This can be

done at the isolaon valve immediately below the boiler for the domesc hot water or by turning o the water supply to the building for the central heang system.

− Use only your hand to turn the manual gas

control valve. Never use tools. If the manual gas control valve will not turn by hand, do not try to repair it; call a trained and qualied professional. Force or aempted repair may result in a re or explosion.

• Do not use this appliance if any part has been under

water. Immediately call a licensed professional to

inspect the appliance and to replace any part of the control system and any manual gas control valve which has been under water.

• Do not use substute materials. Use only parts

cered for the appliance.

• Should overheang occur or the gas supply fail to

shut o, turn o the manual gas control valve to the appliance.

• Only licensed professionals who are trained for

servicing Rinnai Condensing Boilers are permied to adjust parameter sengs.

Page 6

6 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

About the Boiler

Components

❶

❷

❸

❹

❺

❻ ❼

Located behind #6 (Silencer)

❽

❾

❿

⓫

⓬

⓮

⓭

Topics in this secon

• Components

• Specicaons

• Dimensions

• Accessories

• How to Remove the Front Panel

1 iCon Heat Exchanger 2 Burner Hood with Burner Cassee 3 Fan with Integrated Venturi 4 Gas Valve 5 Ignion Unit

6 Silencer 7 Condensate Tray

Flue Gas Exhaust/Air Intake with Measuring Points

9 Automac De-aerator 10 Control Panel 11 Pressure Sensor 12 Modulang Pump

13 Plate Heat Exchanger 14 Diverter Valve 15 Flow Sensor 16 Condensate Trap

⓯

⓰

Located behind #6 (Silencer)

Exhaust

Intake

Page 7

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 7

Model

M060C M090C M120C M160C

Dimensions - w, h, d 17 in. x 28 in. x 10 in. (439 mm x 699 mm x 264 mm) Weight 77 lb (35 kg) 83.6 lb (38 kg)

Appliance Type Wall-Mounted, Gas-Fired Combi Boiler Installaon Type Indoor

Ignion System Direct Electronic Ignion

Heat Exchanger Type iCon1 iCon2 Heat Exchanger Surface Area 7.3 sq  11.8 sq 

Gas Consumpon (Btu/h)

Minimum

NG: 17,000

LP: 31,500

NG: 23,500

LP: 73,500

Maximum (Central Heang) 60,000 90,000 120,000 160,000 Maximum (DHW) 103,000 160,000

Temperature Seng

Central Heang (Min - Max)

68° F - 185° F (20° C - 85° C)

DHW (Min - Max)

104° F - 149° F (40° C - 65° C)

Water Content

Central Heang

1 Gallon

3.8 Liters

1.4 Gallons

5.2 Liters

1.4 Gallons

5.2 Liters

1.4 Gallons 5.2 Liters

DHW

.05 Gallons

.2 Liters

.08 Gallons

.3 Liters

.08 Gallons

.3 Liters

.08 Gallons

.3 Liters

Water Supply Pressure

Central Heang

Minimum: 19 PSI Maximum: 45 PSI

DHW

150 PSI (maximum)

Pressure Relief Valve

30 PSI Pump Model UPER 15-78 Sound Level 46 dB 54 dB

Electrical Data

Normal Central Heang

155 W 177 W 164 W 191 W

DHW

185 W 191 W 191 W 191 W

Standby 3.5 W Max Current 1.97 Amps (maximum) Fuse 5 Amps

Gas Supply Pressure

Natural Gas 3.0 in. - 10.5 in. W.C. Propane 8.0 in. - 13.5 in. W.C.

Electric Connecons AC 120 Volts, 60Hz.

Energy Star Qualied Recognized as the Most Ecient of ENERGY STAR 2018 Cercaons ANSI Z21.13, CSA 4.9

Minimum ow may vary slightly depending on the temperature seng and the inlet water temperature. Minimum acvaon ow is 0.4 GPM (1.5 L/min).

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

Rinnai products are connually being updated and improved; therefore, specicaons are subject to change without prior noce.

DHW = Domesc Hot Water

Specicaons

Page 8

8 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Side

Measurements: in. (mm)

Front

Supply Connecons

Gas

Central Heang

Return

Central Heang

Supply

Domesc Hot Water

Cold Inlet

Domesc Hot Water

Hot Outlet

Dimensions

Gas

Central Heang

Return

Domesc Hot Water

Cold Inlet

Page 9

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 9

The following oponal accessories are available for the Rinnai M-Series Condensing Boiler. For quesons, or to purchase an accessory, contact your local Rinnai dealer/distributor or call Rinnai Customer Care at

1-800-621-9419.

CONDENSATE NEUTRALIZER

Neutralizes the condensate generated by the boiler.

SCALECUTTER

Filters and reduces the amount of scale entering the boiler allowing for greater boiler longevity.

SCALECUTTER REFILL CARTRIDGE

Rell cartridge for the ScaleCuer lter assembly.

ISOLATION VALVE KIT

For quick isolaon of the boiler DHW connecons.

BOILER TOOLKIT

Set of specic tools recommended for boiler service.

Accessories

CLOSELY SPACED TEE KIT

Page 10

10 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

How to Remove the Front Panel

Using a Philips head screwdriver, remove the 2 screws from the top of the boiler.

You Will Need:

• Philips head screwdriver

Li the tab slightly above the peg.

To remove, carefully li the panel up and o to release it from the boiler.

IMPORTANT

Do not operate the boiler without the front panel installed. The front panel should only be removed for service/maintenance or replacing internal components.

TIP

Be careful not to lose the screws. You’ll need them when reinstalling the front cover.

Page 11

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 11

THIS SECTION IS INTENDED FOR THE INSTALLER

Installer qualicaons: A trained and qualied professional must install the appliance, inspect it, and leak test the boiler before use. The warranty will be voided due to any improper installaon. The trained and qualied professional should have skills such as: Gas sizing; Connecng gas lines, water lines, valves, and electricity; Knowledge of applicable naonal, state, and local codes; Installing venng through a wall or roof; and training in installaon of condensing boilers. Training for Rinnai Condensing Boilers is accessible online at www.trainingevents.rinnai.us.

Installation

Installaon Overview

Below is an overview of the installaon process. Detailed informaon about each step is provided in the following pages.

Topics in this secon

• Installaon Overview

• Installaon Guidelines

• Unpack the Boiler

• Choose an Installaon Locaon

• Mount the Boiler to the Wall

2 3

Read and Understand the

Installaon Guidelines

Unpack the Boiler and

Verify the Contents

Choose an Installaon

Locaon

Mount the Boiler

to the Wall

Consider water quality, environment, and clearances

Page 12

12 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

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

and commercial applicaons.

• This boiler is suitable for combinaon water heang

and central heang.

• The installaon must conform with local codes or, in

the absence of local codes, with the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installaon Code, CSA B149.1. If

installed in a manufactured home, the installaon

must conform with the Manufactured Home

Construcon and Safety Standard, Title 24 CFR, Part 3280 and/or CAN/SCA Z240 MH Series, Mobile Homes.

• The appliance, when installed, must be electrically

grounded in accordance with local codes or, in the absence of local codes, with the Naonal Electrical

Code, ANSI/NFPA 70, or the Canadian Electrical Code, CSA C22.1.

• The appliance and its main gas valve must be

disconnected from the gas supply piping system during any pressure tesng of that system at test pressures in excess of 1/2 psi (3.5 kPa) (13.84 in W.C.). For system tesng at pressures less than or equal to 1/2 psi (3.5 kPa) (13.84 in W.C.) the appliance must be isolated from the gas supply piping by closing its individual manual shuto valve.

• You must follow the installaon instrucons and

those in the Venng secon for adequate combuson air and exhaust.

• If this boiler’s DHW system is connected to a closed

water supply system, such as one having a backow preventer in the cold water supply line, means shall be provided to control thermal expansion. Contact the water supplier or local plumbing inspector on

how to control thermal expansion.

• Should overheang occur or the gas supply fail to

shut o, turn o the manual gas control valve to the appliance.

• Combuson air must be free of chemicals, such as

chlorine or bleach, that produce fumes. These fumes can damage components and reduce the life of your appliance.

DO NOT install the boiler in an area where water leakage of the unit or connecons will result in damage to the area adjacent to the appliance or to lower oors of the structure. When such locaons cannot be avoided, it is required that a suitable drain pan, adequately drained, be installed under the boiler. The pan

must not restrict combuson air ow.

DO NOT install the boiler in an area with negave air pressure.

DO NOT obstruct the ow of combuson and venlaon air.

DO NOT use substute parts that are not authorized for this appliance.

DO NOT install the boiler on carpeng.

DO NOT

Installaon Guidelines

Page 13

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 13

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

If any items are damaged or missing, contact your local dealer/distributor or call Rinnai Customer Care at 1-800621-9419. Do not aempt to use any item that appears damaged.

Items included with boiler package:

• Rinnai Condensing Boiler

• Integrated Modulang Pump

• Wall Mounng Bracket

• Pressure Relief Valve (for Central Heang

Systems)

• Condensate Collector Kit

• Outdoor Reset Sensor

• 3 in. (80 mm) Polypropylene to 3" PVC

Adapter (Qty 2)

• 3 in. PVC to 2 in. PVC or 2 in. (60 mm)

Polypropylene adapter (Qty 2)

• 3 in. X 5 in. Concentric Vent Adapter

• Vent top with integrated 3 in. (80mm)

Polypropylene Adapters

• NPT Adapters:

− 1 in. (25 mm) for Central Heang

Systems (Qty 2)

− 3/4 in. (19 mm) (Qty 3 total)

• (Qty 2) for Domesc Hot Water Systems

• (Qty 1) for Gas Supply connecon

• Liquid Propane Field Conversion Kit

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

• User Manual

• ISCL (Installaon, Service, and Commissioning Log)

To avoid danger of suocaon, keep plasc bags away from babies, small children and pets. Do not use these bags in cribs, beds, carriages, or playpens. The bags are not a toy.

WARNING

Gather the recommended tools and parts before starng installaon.

Tools Needed

• Standard tools for central heang, gas ng

and plumbing.

• Digital manometer capable of reading both

posive and negave pressure

• Combuson analyzer (intended for use with

condensing boilers)

• Digital mulmeter capable of reading

microamps

• pH digital meter or test strips

• Metric Allen wrenches (use metric only)

• Metric Socket wrenches (use metric only)

• For wall mounng bracket installaon:

− Level

− Screws (use appropriate screws for type

of wall construcon)

Other Items You May Need

• Hand truck with fastening belt

• Boiler toolkit (oponal accessory for boiler

service. See the Accessories secon for more informaon)

Items Included What You’ll Need

Unpack the Boiler

Page 14

14 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Contaminant Maximum Level

Total Hardness Up to 200 mg/L Aluminum * Up to 0.2 mg/L Chlorides * Up to 250 mg/L Copper * Up to 1.0 mg/L Dissolved Carbon Dioxide (CO2) Up to 15.0 mg/L Iron * Up to 0.3 mg/L Manganese * Up to 0.05 mg/L pH * 6.5 to 8.5 TDS (Total Dissolved Solids) * Up to 500 mg/L Zinc * Up to mg/L

Consideraon of care for your boiler should include evaluaon of water quality.

• The water must be potable, free of corrosive

chemicals, sand, dirt, or other contaminants.

• It is up to the installer to ensure the water does

not contain corrosive chemicals or elements that

can aect or damage the boiler.

• Water that contains chemicals exceeding the levels

below can damage the boiler.

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

When choosing an installaon locaon, you must ensure that clearances will be met and that the vent length will be within required limits. Consider the installaon environment, water quality, and need for freeze protecon. Requirements for the gas line, water lines, electrical connecon, and condensate disposal can be found in their respecve installaon secons in this manual.

This secon provides informaon on the importance of water quality to the Rinnai Condensing Boiler. The informaon is intended to serve as general guidelines

only and is not a complete list of water quality

guidelines.

• Unsuitable heang system water can cause the

formaon of scale or sludge, which aects system

eciency. It can also cause corrosion and reduce

life of the heat exchanger.

• Never use water that has been treated by a reverse

osmosis, deionized, or dislled water to soen the water to ll the heang system.

• For DHW systems, if you install the boiler in an

area that is known to have hard water or that causes scale build-up, the water must be treated and may require a more frequent ushing schedule. Scale build-up is caused by hard water and can be accelerated if the boiler is set at a high temperature. Rinnai oers Southeastern

Filtraon’s “ScaleCuer Water Condioning

System” that oers superior lime scale prevenon and corrosion control by feeding a blend of control compounds into the cold water supply.

• Do not use inhibitors or other addives unless

approved by Rinnai for that purpose.

• When using oxygen-permeable pipes for in-oor

heang systems, you must separate the system from the boiler using plate heat exchangers.

• Thoroughly ush the system prior to lling. While

ushing, isolate the boiler.

• Do not introduce any system cleaner into the boiler

loop. Flush the system thoroughly to remove all

system cleaner before lling the boiler with water.

• When freeze protecon of the heang system is

desired, only use Rinnai-approved anfreezes. The allowed maximum concentraon is 50%.

• Reference secon Approved Cleaners, Inhibitors

and Anfreezes in the Appendix for an approved

list of system cleaners, inhibitors, and anfreezes.

Choose an Installaon

Locaon

Water Quality Guidelines

IMPORTANT

Replacement of components due to water

quality damage is not covered by the warranty.

Page 15

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 15

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

Air surrounding the boiler, venng, and vent terminaon(s) is used for combuson and must be free of any compounds that cause corrosion of internal components. These include corrosive compounds that are found in aerosol sprays, detergents, bleaches, cleaning solvents, oil based paints/varnishes, and refrigerants. The air in beauty shops, dry cleaning stores, photo processing labs, and storage areas for pool supplies oen contains these compounds. The boiler, venng, and vent terminaon(s) should not be installed in any areas where the air may contain these corrosive compounds.

BOTTOM

TOP

FRONT

Locaon Clearance

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

Boom (Ground) 12 in. (305 mm) Front 6 in. (152 mm)

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

Back 0 in. Sides (Le and Right) 2 in. (51 mm) Vent 0 in.

Environment

Clearances

Installaon Locaon Checklist

□

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

□

The boiler locaon complies with the required clearances.

□

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

□

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

□

A standard 3 prong 120 VAC, 60 Hz properly grounded wall outlet or other 120 VAC, 60 Hz source is available.

□

The installaon must conform with local codes or, in the absence of local codes, with the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installaon Code, CSA B149.1.

Closet Installaon Clearances

Top 6 in. (152 mm)

0 in. from vent components

Boom (Ground) 12 in. (305 mm) Front 6 in. (152 mm)

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

Back 0 in. Sides (Le and Right) 2 in. (51 mm) Vent 0 in.

Page 16

16 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

• Level

• Screws for boiler and mounng bracket

installaon (use appropriate screws for type of wall construcon)

Hold the wall mounng bracket up against the wall and use a level to make sure the

bracket is even.

Proper operaon requires the boiler to be level.

Insert the boiler top bracket into the wall mounng bracket. Make sure the wall mounng bracket is sturdy and can hold the weight of the boiler before you fully let go.

Wall Mounng Bracket

Level

Use the appropriate screws for the wall construcon to secure the mounng bracket

to the wall (use any of the screw holes in the

mounng bracket).

Mount the Boiler to the Wall

You Will Need

Supplied by Installer

• Rinnai Condensing Boiler

• Wall Mounng Bracket

Insert the boiler top bracket into the wall mounng bracket

Assembled view

Page 17

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 17

• M-Series boilers can be installed as direct vent or

non-direct vent applicaons.

• When installed as Direct Vent, refer to the

following secon for a complete list of approved vent manufacturers and products: Venng Opons

→ Direct Vent: Approved Vent Manufacturers and Products.

• When installed as Non-Direct Vent (Room Air), the

vent must be Category IV and of a type listed by a naonal recognized tesng agency.

• Exhaust must be directly vented to the outside.

Combuson air can be provided from outside

(Direct Vent) or from room air (Non-Direct Vent).

• If using room air (non-direct vent) for combuson,

ensure the required volume of indoor air is available according to the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54.

• Avoid dips or sags in horizontal vent runs by

installing supports per the vent manufacturer’s instrucons.

• Support horizontal vent runs every 4  (1.2 m) and

all vercal vent runs every 6  (1.83 m) or as per vent manufacturer’s instrucons or local code

requirements.

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

minimum number of pipe ngs.

• For manufactured vent systems, vent connecons

must be rmly pressed together so that the connecons form an air ght seal. Follow the venng manufacturer’s instrucons.

• Refer to the Schedule 40 PVC/CPVC manufacturer

for appropriate ngs, solvents or joining methods.

WARNING

DO NOT use cellular core PVC/CPVC.

DO NOT use Radel, ABS, or galvanized material to

vent this appliance.

DO NOT cover non-metallic vent pipe and ngs

with thermal insulaon.

DO NOT combine vent components from

dierent manufacturers.

DO NOT reduce the vent diameter. Vent

diameter cannot be less than 2 in.

DO NOT connect the venng system with an

exisng vent or chimney.

DO NOT common vent with the vent pipe of any

other manufacturer’s boiler or appliance.

Venting

Venng Guidelines

Topics in this secon

• Venng Guidelines

• Venng Installaon Sequence

• Terminaon Consideraons

• Venng Opons

• If venng reassembly is needed, follow the steps

for installing the venng in the following secons. Make certain that the vent piping and seals are not damaged. Only use sealants, primers, or glues that are approved for the vent material in use.

• Refer to the instrucons of the vent system

manufacturer for component assembly instrucons.

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

suggested that the design of the enclosure shall permit inspecon of the vent system. The design of such enclosure shall be deemed acceptable by the installer or the local inspector.

• Any issues resulng from improper vent

installaon will not be covered by warranty.

Page 18

18 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

1. Install the boiler.

2. Determine the terminaon method—horizontal or vercal, concentric, or twin pipes, etc.

3. Determine proper locaon for wall or roof penetraon for each terminaon.

4. Install terminaon assembly as described in this manual or in the vent manufacturer’s installaon instrucons.

5. Install air and vent piping from boiler to terminaon.

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

towards boiler.

7. Install vent supports and brackets allowing for movement from expansion, or as per vent manufacturer’s instrucons or local code requirements.

8. (Oponal step) Install vent screen or room air lter (not included with purchase) on Schedule 40 PVC combuson air and exhaust terminaon elbows as illustrated below.

Check to determine whether local codes supersede the following clearances:

• Avoid terminaon locaons near a dryer vent.

• Avoid terminaon locaons near commercial

cooking exhaust.

• Avoid terminaon locaons near any air inlets.

• You must install a vent terminaon at least 12 in

above the ground or ancipated snow level.

Press air lter into the 3 in. (76 mm) PVC intake air ng on the boiler.

Vent Screen

Room Air Filter

• Press vent screen inside of

terminaon piece/elbow.

• Secure vent screen to the

elbow with screw.

Venng Installaon Sequence

Terminaon

Consideraons

The vent for this appliance shall not terminate:

• Over public walkways.

• Near sot vents or crawl space vents or other area

where condensate or vapor could create a nuisance or hazard or cause property damage.

• Where condensate or vapor could cause damage or

could be detrimental to the operaon of regulators pressure relief valves, or other equipment.

Listed below are important consideraons for locang vent terminaon under a sot (venlated or unvenlated

or eave vent; or to a deck or porch):

• Do not install vent terminaon under a sot vent

such that exhaust can enter the sot vent.

• Install vent terminaon such that exhaust and rising

moisture will not collect under eaves. Discoloraon to the exterior of the building could occur if installed too close.

• Do not install the vent terminaon too close under

the sot where it could present recirculaon of exhaust gases back into the combuson air part of the terminaon.

The instrucons for the installaons of the venng system

shall specify that the horizontal porons of the venng system shall be supported to prevent sagging; the methods of and intervals for support shall be specied. These instrucons shall also specify that the venng system:

• For category I, II and IV boilers, have horizontal runs

sloping upwards not less than 1/4" per foot (21mm/ m) from the boiler to the vent terminal;

• For category III boilers, slope shall be as specied in

the boiler manufacturer's instrucons;

• For category II and IV boilers, be installed so as to

prevent accumulaon of condensate; and

• For category II and IV boilers, where necessary, have

means provided for drainage of condensate.

Page 19

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 19

Two venng opons are available: Direct Vent and Room Air.

Concentric Pipe

Combuson air and exhaust vent directly through a single concentric connecon. Hot exhaust exits through the interior tube, while combuson air enters through the outer layer.

Exhaust

Twin Pipe

Combuson air and exhaust vent directly through separate penetraons.

Direct Vent (Concentric and Twin Pipe)

Room air lter

Opon 1

Room Air

Opon 2

Combuson

air

Combuson

air

Exhaust

Combuson

air

Exhaust

Combuson

air

See Direct Vent secon for complete details.

See Room Air secon for complete details.

Exhaust

Combuson air

Venng Opons

Page 20

20 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Following is a list of vent components and terminaons for Direct Vent installaons (concentric and twin pipe). Install the correct venng for your model according to the venng manufacturer’s instrucons and the guidelines below. The informaon below is correct at me of publicaon and is subject to change without noce. Contact the vent manufacturer for quesons related to the vent system, products, part numbers and instrucons.

Manufacturer Phone Web Site

Ubbink 800-621-9419 www.rinnai.us Centrotherm 877-434-3432 www.centrotherm.us.com Heat-Fab 800-772-0739 www.heaab.com Metal Fab 800-835-2830 www.metal-fabinc.com IPEX U.S.: 800-463-9572 Canada: 866-473-9462 www.ipexamerica.com www.ipexinc.com DuraVent 800-835-4429 www.duravent.com Royal 800-232-5690 www.royalbuildingproducts.com Ecco Manufacturing 877-955-4805 www.eccomfg.com DiversiTech 800-995-2222 www.diversitech.com

Direct Vent: Approved Vent Manufacturers and Products

2 in./4 in. CONCENTRIC VENT TERMINATIONS

229011NPP 229012NPP 229013NPP

2/4 Condensing Horizontal Terminaon Kit 8.7 in. 2/4 Condensing Horizontal Terminaon Kit 12 in. 2/4 Condensing Horizontal Terminaon Kit 21 in.

224356NPP 2/4 Condensing Roof Discharge Terminaon

20 in. above roof

710202NPP 2/4 Condensing 90 Degree Diverter Nose

(Use with Wall Terminal)

710215NPP 2/4 Condensing 45 Degree Diverter Nose

(Use with Wall Terminal)

196005, 197040 FGV Concentric Vent Kit

(16 in. length)

196105, 197033 FGV Concentric Vent Kit

(28 in. length)

196125 FGV Concentric Vent Kit

(40 in. length)

UBBINK

IPEX

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

2 in./4 in. CONCENTRIC VENT TERMINATIONS

Page 21

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 21

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

52CVKGVS6502 PVC Concentric Vent Kit 2 in. x 16 in.

52CVKGVS6502-28 PVC Concentric Vent Kit 2 in. x 28 in.

52CVKGVS6502-40 PVC Concentric Vent Kit 2 in. x 40 in.

ICRT2439 2 in. x 4 in. Concentric Roof

Terminaon

2PPS-VKL/VK-TCL 2 in. x 4 in. Vercal Terminaon

Cap Kit-Concentric

2PPS-HKL 2 in. x 4 in. Horizontal Terminaon

Kit-Concentric

190288 2 in. x 4 in. Concentric Horizontal

Terminaon

190295 2 in. x 4 in. Concentric Vercal

Terminaon

CVENT-2 2 in. x 4 in. Concentric Horizontal

Terminaon

ROYAL

CENTROTHERM

DURAVENT

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

ECCO

DIVERSITECH

Page 22

22 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

3 in./5 in. CONCENTRIC VENT TERMINATIONS

223174PP 223176PP

223177PP

3/5 Condensing Horizontal Terminaon Kit 8.7 in. 3/5 Condensing Horizontal Terminaon Kit 12 in.

3/5 Condensing Horizontal Terminaon Kit 21 in.

223186PP 3/5 Condensing Horizontal Diverter

Terminaon Kit 19 in.

224047PP 3/5 Condensing Raised Horizontal

Terminaon Kit

184162PP 3/5 Condensing Roof Discharge

Terminaon 20 in. above roof

196006, 197009 FGV Concentric Vent Kit 3 in. x 20 in.

196106, 197107 FGV Concentric Vent Kit 3 in. x 32 in.

196116, 197117 FGV Concentric Vent Kit 3 in. x 44 in.

52CVKGVS6503 (PVC)/ 52CVKGVSF9003 (CPVC)

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

52CVKGVS6503-32 (PVC)/ 52CVKGVSF900332 (CPVC)

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

52CVKGVS6503-44

(PVC)/ 52CVKGVSF9003-

44 (CPVC)

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

SC03HT Horizontal Terminaon Adapter

SC03VT Vercal Terminaon Adapter

ICRT3539 3''/5'' Concentric Roof Terminaon PPs-UV

UBBINK

IPEX

ROYAL

CENTRO

THERM

HEAT

-FAB

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

3 in./5 in. CONCENTRIC VENT TERMINATIONS

Page 23

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 23

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

3CGRLSV Vercal Adapter

3CGRLSH Horizontal Adapter

3CGRVT Vercal Terminaon

3CGRHT Horizontal Terminaon

3PPS-VKL/VK-TCL 3 in. x 5 in. Vercal

Terminaon Cap Kit-Concentric

3PPS-HKL 3 in. x 5 in. Horizontal

Terminaon Kit-Concentric

190388 3 in. x 5 in. Concentric

Horizontal Terminaon

190395 3 in. x 5 in. Concentric Vercal

Terminaon

CVENT-3 3 in. x 5 in. Concentric

Horizontal Terminaon

METAL

-FAB

ECCO

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent Length

()

DURAVENT

DIVERSITECH

Page 24

24 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

2 in. TWIN PIPE TERMINATIONS

ISELL0287UV 2 in. 87° Long PPS-UV

ISTT0220 2 in. Terminaon Tee

ISLPT0202 2 in. Low Prole Wall

Terminaon

2PPS-HTPL 2 in. Twin Pipe Terminaon

2PPS-HSTL 2 in. Single Horizontal

Terminaon

2PPS-TBL 2 in. Black UV Resistant Tee

196984 FGV PVC Low Prole

Terminaon Kit

081216 FGV PVC Wall Terminaon

Kit

52SWVKGVS6502 PVC Side Wall Vent Kits

52WTVKGVS6502 PVC Wall Vent Kits

HVENT-2 2 in. Low Prole Horizontal Vent

Kit

CENTROTHERM

DURAVENT

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent

Length ()

IPEX

ROYAL

DIVERSITECH

Page 25

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 25

3 in. TWIN PIPE TERMINATIONS

ISELL0387UV 3 in. 87° Long PPS-UV

ISTT0320 3 in. Terminaon Tee

ISLPT0303 3 in. Low Prole Wall Terminaon

3PPS-HTPL 3 in. Twin Pipe Terminaon

3PPS-HSTL 3 in. Single Horizontal Terminaon

3PPS-TBL 3 in. Black UV Resistant Tee

196985 FGV PVC Low Prole Terminaon

Kit

081219 FGV PVC Wall Terminaon Kit

52SWVKGVS6503 PVC Side Wall Vent Kits

52WTVKGVS6503 PVC Wall Vent Kits

HVENT-3 3 in. Low Prole Horizontal Vent

Kit

CENTROTHERM

DURAVENT

Manufacturer

Part Number

Product

Descripon

Diagram

Horizontal

Vercal

Equivalent

Length ()

IPEX

ROYAL

3 in. TWIN PIPE TERMINATIONS

Air Filter Screen

N/A

Tee

90° Elbow

2.5 45° Elbow

DIVERSITECH

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

Page 26

26 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Canadian Installaons

(CSA B149.1)

U.S. Installaons

(ANSI Z223.1 /NFPA 54)

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

A Clearance above grade, veranda, porch, deck, or balcony 12 in. (30 cm) 12 in. (30 cm) B Clearance to window or door that may be opened 36 in. (91 cm) 12 in. (30 cm) C Clearance to permanently closed window * *

Vercal clearance to venlated sot, located above the terminal within a horizontal distance of 2  (61 cm) from the center line of the terminal

* *

E Clearance to unvenlated sot * * F Clearance to outside corner * * G Clearance to inside corner * *

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

* *

I Clearance to service regulator vent outlet

Above a regulator within 3 

(91 cm) horizontally of the vercal

center line of the regulator vent

outlet to a maximum vercal

distance of 15  (4 m)

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

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

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

3  (91 cm) above if within

10  (3 m) horizontally

Clearance above paved sidewalk or paved driveway located on public property

7  (2.13 m) [1] *

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

AIR SUPPLY INLET

VENT TERMINAL

AREA WHERE TERMINAL IS NOT PERMITTTED

SNOW

TERMINATION

Clearance in

Ref. A also applies to anticipated snow line

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

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

is located between two single family dwellings and serves both dwellings.

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

mum of two sides beneath the oor.

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

requirements of the gas supplier.

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

Direct Vent: Terminaon Clearances

Page 27

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 27

CONCENTRIC PIPE: TERMINATION CLEARANCES

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

Boiler Model Number M060C M090C, M120C, M160C M060C M090C, M120C, M160C

Vent Lengths 60  (18 m) 30  (9 m) 150  (46 m) 140  (43 m)

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

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

CONCENTRIC PIPE: MAXIMUM EQUIVALENT VENT LENGTH

All terminaons (horizontal and/or vercal) must terminate 12 in. (0.30 m) above grade or ancipated snow level.

12 in. (0.30 m)

Between terminals at same level

60 in. (1.52 m)

Between terminals at dierent levels

Note: 24 in. (0.61 m) to wall or parapet

Inside Corner

12 in.

(0.30 m)

12 in.

(0.30 m)

60 in. (1.52 m) vercally between terminals

Direct Vent: Concentric Pipe

Page 28

28 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

CONCENTRIC PIPE: INSTALLATION INSTRUCTIONS

2 in. x 4 in.

3 in. x 5 in.

2 in. x 4 in.

and

3 in. x 5 in.

Important: Install the venng terminaon

according to the diagrams and instrucons in this manual. Slope the venting 1/4 in. per foot toward the appliance according to the vent manufacturer’s installation instructions. Dispose of condensate per local codes.

The instrucons below apply to concentric vent sizes 2 in. x 4 in. and 3 in. x 5 in.

CONCENTRIC PIPE: EXAMPLE VENT APPLICATIONS

Horizontal Wall Terminaons

Vercal Roof Terminaons

Insert the concentric adapter and rotate clockwise unl locked in place.

Remove the vent top (slightly twist counterclockwise and pull up). Discard vent top if desired.

Pull up

Slightly twist

counter-clockwise

Improper installaon of vent components, or failure to follow all installaon instrucons can result in property damage, personal injury, or death.

WARNING

Page 29

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 29

Twin Pipe Vercal Terminaon

of Mulple Boilers

Combuson air terminaon not permied in shaded area

12 in. (0.30 m) above grade or ancipated snow level

12 in. (0.30 m) minimum

12 in. (0.30 m) minimum above combuson air opening

Roof

12 in. (0.30 m) above grade or ancipated snow level

12 in. (0.30 m) minimum

Exhaust

Combuson

Air

Exhaust

Zone

60 in. (1.5 m)

minimum

12 in. (0.30 m)

minimum

Wall

Combuson

Air

Exhaust

Vent Sizes

• 3 in. PVC

• 3 in. (80 mm) PP

• 2 in. PVC

• 2 in. (60 mm) PP

Boiler Model Number M060C M090C, M120C, M160C M060C M090C, M120C, M160C

Vent Lengths 60  (18 m) 30  (9 m) 150  (46 m) 140  (43 m)

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

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

Direct Vent: Twin Pipe

TWIN PIPE: TERMINATION CLEARANCES

TWIN PIPE: MAXIMUM EQUIVALENT VENT LENGTH

Horizontal Vent and

Combuson Air Piping

Page 30

30 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

This boiler is equipped with a 3 in. PVC pipe connecon. With the use of a pipe reducer, installers can use a 2 in. pipe for the combuson air and exhaust.

DO NOT apply PVC glues, solvents, or cleaners to the boiler’s combuson air or exhaust gasket connecons. Failure to correctly assemble the components according to these instrucons may result in property damage, personal injury, or death.

WARNING

TWIN PIPE: INSTALLATION INSTRUCTIONS

Install 3 in. PVC

Install 3 in. PVC piping.

Install 3 in. (80 mm) Polypropylene (PP)

Remove the 3 in. PVC adapter from the vent top.

Install 2 in. PVC or PP (60 mm)

Install 2 in. PVC or PP piping.

Insert 2 in. reducer.

Insert 3 in. (80 mm) PP piping.

Page 31

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 31

2 in. or 3 in.

PVC/CPVC IPEX/Royal Concentric

Side Wall

Terminaon

Congura-

on

2 in. or 3 in.

PVC/CPVC IPEX/Royal Concentric

Vercal

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC

Snorkel

Terminaon

Congura-

on

2 in. or 3 in.

Schedule 40

PVC/CPVC

Standard

upside down

"U" Vercal

Terminaon

Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC

Elbow or Tee

Side Wall

Terminaon

Congura-

on

2 in. or 3 in.

Schedule 40

PVC/CPVC Tee

Vercal

Terminaon

Conguraon

2 in. or 3 in.

PVC Low

Prole

Terminaon

Congura-

on

This conguraon requires the use of a Concentric Vent Terminaon

Exhaust and

combuson

air MUST NOT be brought together into a single PVC pipe using a pipe ng.

WARNING

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

Exhaust

Combuson Air

Single

Pipe

This conguraon requires the use of a Concentric Vent Terminaon

TWIN PIPE: EXAMPLE VENT APPLICATIONS

Page 32

32 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Canadian Installaons

(CSA B149.1)

U.S. Installaons

(ANSI Z223.1 /NFPA 54)

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

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

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

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

1  (300 mm) above opening

C Clearance to permanently closed window * *

Vercal clearance to venlated sot, located above the terminal within a horizontal distance of 2  (61 cm) from the center line of the terminal

* *

E Clearance to unvenlated sot * * F Clearance to outside corner * * G Clearance to inside corner * *

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

* *

I Clearance to service regulator vent outlet

Above a regulator within 3  (91 cm) horizontally of the vercal center line of the regulator vent outlet to a maximum

vercal distance of 15  (4 m)

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

36 in. (91 cm)

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

1  (300 mm) above opening

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

3  (91 cm) above if within 10 

(3 m) horizontally

Clearance above paved sidewalk or paved driveway located on public property

7  (2.13 m) [1] *

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

AIR SUPPLY INLET

VENT TERMINAL

AREA WHERE TERMINAL IS NOT PERMITTTED

SNOW

TERMINATION

Clearance in

Ref. A also applies to anticipated snow line

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

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

is located between two single family dwellings and serves both dwellings.

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

mum of two sides beneath the oor.

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

requirements of the gas supplier.

Room Air

ROOM AIR: TERMINATION CLEARANCES

Page 33

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 33

60 in.

12 in.

(0.30 m)

Inside Corner

NOTE: All terminaons (horizontal and/or vercal) must terminate 12 in. above grade or ancipated snow level.

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

(1.52 m) vercally between terminals

ROOM AIR: EXHAUST TERMINATION CLEARANCES

Page 34

34 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Important: Combuson air must be free of corrosive chemicals. Do not provide combuson air from corrosive environments. Appliance failure due to corrosive air is not covered by warranty.

For applicaons containing corrosive indoor air, this appliance must be installed as direct vent. DO NOT use room air in applicaons where combuson air contains acid forming chemicals such as sulfur, uorine and chlorine. These chemicals have been found to cause rapid damage and decay and can become toxic when used as combuson air in

gas appliances. Such chemicals can be found in, but not limited to bleach, ammonia, cat lier, aerosol sprays, cleaning

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

Unconned Space

An unconned space is dened in Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54 as “a space whose volume is not less than 50 cubic feet per 1000 Btu/hr (4.8 m3 per kW per hour) of the aggregate input rang of all appliances installed in that space. Rooms communicang directly with the space in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconned space.” If the “unconned space” containing the appliance(s) is in a building with ght construcon, addional outside air may be required for proper operaon. Outside air openings should be sized the same as for a conned space.

Conned Space

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

50 cubic feet per 1000 Btu/hr (4.8 m3 per kW per hour) of the aggregate input rang of all appliances installed in that

space." Examples include a small room, closet, alcove, ulity room, etc. A conned space must have two combuson air openings. Size the combuson air openings based on the BTU input for all gas ulizaon equipment in the space and the method by which combuson air is supplied.

Using Indoor Air For Combuson

When using air from other room(s) in the building, the total volume of the room(s) must be of adequate volume (Greater than 50 cubic feet per 1000 Btu/hr). Combuson air openings between joining rooms must have at least 1 square inch of free area for each 1000 Btu/h, but not less than 100 square inches each.

Using Outdoor Air For Combuson

Outdoor air can be provided to a conned space through two permanent openings, one commencing within 12 in. (0.30 m) of the top and one commencing within 12 in. (0.30 m) of the boom, of the conned space. The openings

shall communicate to the outside by one of two ways.

When communicang directly with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 in2/2000 Btu/hr (1100 mm2/kW) of total input rang of all appliances in the conned space.

Note: If ducts are used, the cross seconal area of the duct must be greater than or equal to the required free area of the openings to which they are connected.

This boiler requires adequate combuson air for venlaon and diluon of ue gases. Failure to provide adequate combuson air can result in unit failure, re, explosion, serious bodily injury or death. Use the following methods to ensure adequate combuson air is available for correct and safe operaon of this boiler.

WARNING

ROOM AIR: COMBUSTION AIR

Page 35

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 35

Combuson air provided to the appliance should not be taken from any area of the structure that may produce a negave pressure (i.e. exhaust fans, powered venlaon fans).

NOTICE

WARNING

TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION, COMMON VENTING WITH OTHER MANUFACTURER’S INDUCED DRAFT APPLIANCES IS NOT ALLOWED.

Locaon

To maintain proper circulaon of combuson air two permanent openings (one upper, one lower) must be posioned in conned spaces. The upper shall be within 12 in. (0.30 m) of the top of the

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

the boom of the conned space. Openings must be posioned as to never be obstructed.

Louvers and Grills

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

required free area required for all gas ulizing equipment in the space. If the free area of the louver or grill design is not available, assume wood louvers will have 25% free area and metal louvers or grills will have 75% free area. Under no circumstance should the louver, grill or screen have openings smaller than 1/4 in.

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

Metal: 10 in. x 12 in. x 0.75 = 90 in.2

12 in.

(300 mm)

10 in.

(250 mm)

□

Verify all combuson air opening sizes are correct.

□

Ensure that the Combuson Air Requirements are followed that will provide sucient combuson air for the appliance.

□

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

□

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

□

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

CHECKLIST FOR COMBUSTION AIR AND VENTING REQUIREMENTS

Page 36

36 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Vent Sizes

• 3 in. PVC

• 3 in. (80 mm) PP

• 2 in. PVC

• 2 in. (60 mm) PP

Boiler Model Number M060C M090C, M120C, M160C M060C M090C, M120C, M160C

Vent Lengths 60  (18 m) 30  (9 m) 150  (46 m) 140  (43 m)

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

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

Insert air lter or elbow into 3 in. PVC intake air ng.

ROOM AIR: INSTALLATION INSTRUCTIONS

ROOM AIR: MAXIMUM EQUIVALENT VENT LENGTH

Air Filter Elbow

Page 37

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 37

2 in. or 3 in. Schedule 40 PVC/CPVC Snorkel Terminaon Conguraon

2 in. or 3 in. Schedule 40 PVC/CPVC Standard Upside Down "U" Vercal Terminaon Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC Elbow or Tee Side Wall Terminaon Conguraon

2 in. or 3 in.

Schedule 40

PVC/CPVC Tee Vercal Terminaon Conguraon

Slope horizontal exhaust 1/4 in. per foot towards the boiler.

ROOM AIR: EXAMPLE VENT APPLICATIONS

Page 38

38 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Plumb the heang supply line to the heang supply connecon on the boom of the boiler.

When removing the plasc sealing caps from the pipes,

water may come out of the boiler due to live re tesng

during manufacturing.

NOTICE

The boiler, when used in connecon with a refrigeraon system, must be installed so the chilled medium is piped in parallel with the boiler with appropriate valves to prevent the chilled medium from entering the boiler.

NOTICE

The boiler piping system of a hot water boiler connected to heang coils located in air handling units where they may be exposed to refrigerated air circulaon must be equipped with ow control valves or other automac means to prevent gravity circulaon of the boiler water during the cooling cycle.

NOTICE

Some installaons with mulple zone valves may require a dierenal bypass, which will prevent excessively high ow rates through a single zone when the other zone valves are closed.

NOTICE

Heang Return Connecon

Heang Supply Connecon

System Piping

Piping for Central

Heang Systems

Instrucons

Topics in this secon

• Piping for Central Heang Systems

• Piping for DHW Systems

• Connect the Condensate Drain Line

• Connect the Pressure Relief Valves

Purge the water line to remove all debris and air. Debris will damage the boiler.

NOTICE

To connect the water supply, follow the instrucons below.

IMPORTANT: Water connecons to the boiler should follow all state and local plumbing codes.

If this is a standard installaon, refer to the “Piping Diagram for Basic Central Heang Installaon” on the next page.

Aach the 3/4 in. FNPT x 1 in. MNPT

connecon ng to the supply and return heang ngs on the boom of the boiler.

Supply and Return Fing Connecons

Plumb the heang return line to the heang return connecon on the boom of the boiler.

Page 39

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 39

This is not an engineering drawing; it is intended only as a guide and not as a replacement for professional engineering project drawings. This drawing is not intended to describe a complete system. It is up to the contractor or engineer to determine the necessary components and conguraon of the parcular system to be installed. The drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor or engineer to ensure the installaon is in accordance with all local building codes. Confer with local building ocials before installaon.

Heat Emier

Thermostat

Outdoor

Reset

Oponal Low Water

Cut-O (LWCO)

Piping Diagram for a Basic Central Heang System

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

NOTE

This schemac shows a simple single zone system without an external system circulator (not including the circulator located inside the boiler). If an external circulator is present, a primary/secondary system is required. This type of boiler connecon may also be necessary in a mulple zone applicaon.

higher than 20 FT of head (see the Pressure Drop and

Water Flow Curve in secon 13 Appendices for pressure curve informaon).

Page 40

40 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

In some circumstances it may become necessary to have hydraulic separaon between the boiler and the central heang system. Hydraulic separators allow for no pump curve matching or ow calculaon; this is ideal for multemperature and mul-zone systems. Examples include:

• Systems with high pressure drops (see example below)

• Systems with high ow demands

• Systems with zone circulators

• Large zoned systems

Examples of Hydraulic Separaon

Closely spaced tees and low loss headers are common examples of hydraulic separators and can be used to separate

the boiler loop from the central heang loop.

Closely Spaced Tees Low Loss Header

Distance no more than four pipe diameters

IMPORTANT

For closely spaced tee installaons, the separaon at the header is to be

no more than four pipe diameters.

Hydraulic Separaon

Page 41

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 41

Example: If there is a 6 GPM system ow demand, there would be approximately 10  of head available for the system.

If more pressure drop is present in the central heang system, a means of hydraulic separaon is necessary.

0 1 2 3 4 5

7 8

Water Flow (GPM)

Pressure Loss (Feet of Head)

Pressure Drop and Water Flow Curve with Hydraulic Separaon

Internal Bypass

There is an internal bypass valve located in the supply side of the water control assembly. This allows for internal circulaon inside the boiler to ensure there is always water ow present. In high resistance applicaons, the valve may

open to ensure proper temperature across the boiler loop.

Page 42

42 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

• A thermostac mixing valve shall be installed on all

M-Series Combi boilers on the domesc hot water side to prevent scalding; this valve regulates the water temperature leaving the brazed plate heat exchanger.

• 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.

• The appliance must not be connected to a system

that was previously used with a non-potable water heang appliance.

• DO NOT introduce toxic chemicals such as those used

for boiler water treatment to the potable water used for central heang.

DHW Cold Inlet Connecon

DHW Hot Outlet Connecon

Guidelines

Instrucons

Piping for DHW Systems

Aach the 1/2 in. FNPT x 3/4 in. MNPT connecon ng to the hot and cold ngs

on the boom of the boiler.

To connect the water supply, follow the instrucons below.

IMPORTANT: Water connecons to the boiler should follow all state and local plumbing codes.

If this is a standard installaon, refer to the Piping

Diagram for Basic DHW Installaon on the next page.

Plumb the cold water supply line to the DHW cold inlet connecon on the boom of the boiler.

Plumb the hot water supply line to the DHW hot outlet connecon on the boom of the boiler.

Hot and Cold Fing Connecons

Page 43

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 43

Piping Diagram for Basic DHW Installaon

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

Cold Water Supply Line

Heang Return

Hot Water Supply Line

Condensate Drain Line

Sediment Filter (Recommended)

Mixing Valve

Heang Supply

Tempered Hot Water

Supply to Fixtures

Page 44

44 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

• Do not plumb the condensate drain with the

pressure relief valve; both must be plumbed independently to drain.

• All condensate must drain and be disposed of

according to local codes.

• Use only corrosion resistant materials for the

condensate drain lines such as PVC pipe or plasc hose.

• The condensate drain pipe (along its enre

length) must be at least 1/2 in.

• Condensaon drain lines installed in areas that

are subject to freezing temperatures should be wrapped with an approved supplemental heat source. Install per manufacturer’s instrucons.

• Slope the condensate drain lines toward the

inside oor drain or condensate pump.

• The end of the condensate drain pipe should

be open to the atmosphere. The end should not be under water or other substances.

EXTERNAL TRAP NOT REQUIRED

DO NOT

• DO NOT connect the condensate drain line

with an air condioning evaporator coil drain.

• Boilers have an integrated condensate trap.

DO NOT install an external condensate trap.

Connect the Condensate Drain Line

Guidelines

• 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 the Accessories secon for more informaon.

• The condensate drain pipe should be as short

as possible and have a downward pitch.

Refer to Neutralizer Installaon Manual and local codes for neutralizer installaon guidelines.

Neutralizer

Pipe open to atmosphere

CORRECT

Pipe open to

atmosphere

Pipe submerged

in water

NOT

CORRECT

Water level

Image is for reference purposes only

Page 45

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 45

Connect the Condensate Drain Kit

Verify Contents

Item # Item Qty

a Elbow with exible pipe 1

b T-piece, elbow and exible pipe assembly 1

c Flexible drain pipe 1

d Condensate drain inner tube 1

e Condensate drain outer tube 1

f Condensate collector cover 1



Mul-purpose grease or lubricant

Tools/Materials Required

Figure 1

Apply grease or lubricant to top of o-ring

Reference Figure 1 for the following instrucons.

1. Press and turn the assembly (3), with the elbow rst, in the corresponding holes in the boom plate of the boiler.

2. Press the black exible pipe (1) from inside the boiler in the rubber T-piece (3).

3. Press the black rubber elbow with exible drain pipe (1) on the condensate tray (2).

4. Lead the long black exible pipe (4) through the free hole of the boiler frame and press it in the T-piece (3).

5. Lead the other end of the exible pipe outside the boiler to the drain.

6. Fill the condensate drain outer tube (5) with 150 ml (about 5 oz.) of water.

7. Apply mul-purpose grease or lubricant to the top of the o-ring on the condensate drain inner tube (6).

8. Insert the condensate drain inner tube (6) through the hole in the boom plate of the boiler into the condensate tray (2) of the heat exchanger; you will hear a click when it is fully seated. Next, insert the condensate drain outer tube through the hole. Secure the condensate drain out tube with the securing clip (7) by turning it clockwise.

9. Press the sealing ring (8) around the outer condensate tube and press/turn it in the boom plate of the boiler.

Instrucons

Page 46

46 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

An approved pressure relief valve is required by the American Naonal Standard (ANSI Z21.13) for all water heang systems and shall be accessible for servicing. When connecng a pressure relief valve, follow the guidelines below:

• The M-Series boiler has a factory-installed pressure sensor type low water cut o (LWCO). Check your local codes

to determine if a low water cut o is required and if this device conforms to the local code. The boiler's internal low water cut o is not serviceable or adjustable.

• The pressure relief valve must comply with the standard for Relief Valves and Automac Gas Shuto Devices for

Hot Water Supply Systems ANSI Z21.22 and /or the standard Temperature, Pressure, Temperature and Pressure Relief Valves and Vacuum Relief Valves, CAN1-4.4.

• The pressure relief valve must be rated up to 150 psi for DHW systems and 30 psi for central heang systems, and

to at least the maximum BTU/hr of the appliance.

• The discharge from the pressure relief valve should be piped to the ground or into a drain system per local codes.

• The pressure relief valve must be manually operated once a year to check for correct operaon.

• The discharge line from the pressure relief valve should pitch downward and terminate 6 in. (152 mm) above

drains where discharge will be clearly visible.

• 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.

• The pressure relief valve is assembled to the pressure relief valve adapter as illustrated on the next page. DO NOT

place any other valve or shut o device between the pressure relief valve and the boiler.

• If a pressure relief valve discharges periodically, this may be due to thermal expansion in a closed water supply

system. Contact the water supplier or local plumbing inspector on how to correct this situaon. Do not plug the pressure relief valve.

• The American Naonal Standard (ANSI Z21.13) does not require a combinaon temperature and pressure relief

valve for this appliance. However, local codes may require a combinaon temperature and pressure relief valve.

• Protect pressure relief valve and pressure relief valve discharge line from freezing. Do not plug or restrict ow of

the pressure relief valve.

Water discharged from the pressure relief valve could cause severe burns instantly or death from scalds.

DO NOT plumb the pressure relief valve with the condensate drain; both must be plumbed independently to drain.

DO NOT plug the pressure relief valve and do not install any reducing ngs or other restricons in the relief line. The pressure relief line should allow for complete drainage of the valve and the line.

DO NOT place any other valve or shuto device between the pressure relief valve and the boiler.

WARNING

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.

Connect the Pressure Relief Valves

(For DHW and Central Heang)

General Guidelines for Central Heang and DHW

Central Heang Systems

Page 47

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 47

1. Aach the 1/2 in. FNPT x 3/4 in. MNPT connecon ng to the gas ng on the boom of the boiler.

• A licensed professional must install the gas supply.

• Turn o 120V power supply.

• Turn o the gas.

• Gas is ammable. Do not smoke or provide other

ignion sources while working with gas.

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

gone.

WARNING

2. Check the type of gas and gas supply pressure before connecng the boiler. If the boiler is not of the gas type that the building is supplied with, DO NOT connect the boiler. Contact the dealer for the proper boiler to match the gas type.

3. Check the gas supply pressure immediately upstream at a locaon provided by the gas company. Supplied gas pressure must be within the limits shown in the Specicaons secon with all gas appliances

operang.

4. Before placing the appliance in operaon, all joints including the heater must be checked for gas ghtness by means of soap, gas leak detector soluon, or an equivalent nonammable soluon, as applicable. (Since some leak test soluons, including soap and water, may cause corrosion or stress cracking, the piping shall be rinsed with water aer tesng, unless it has been determined that the leak test soluon is non-corrosive.)

5. Use approved connectors to connect the boiler to the gas line. Purge the gas line of any debris before connecon to the boiler.

6. Any compound used on the threaded joint of the gas piping shall be a type that resists the acon of liqueed petroleum gas (propane/LPG).

7. The gas supply line shall be gas ght, sized, and so installed as to provide a supply of gas sucient to meet the maximum demand of the heater and all other gas consuming appliances at the locaon without loss of pressure. If in doubt about the size of the gas line, refer to the Gas Pipe Sizing Reference Tables secon on the next page.

8. Perform a leak and pressure test prior to operang the boiler. If a leak is detected, do not operate the

boiler unl the leak is repaired.

Gas Supply

Connect the Gas Supply

Gas connecon 3/4 in. MNPT connecon

Topics in this secon

• Connect the Gas Supply

• Gas Pipe Sizing Reference Tables

• The boiler shall be installed such that the gas

ignion system components are protected from

water (dripping, spraying, rain, etc.) during appliance operaon and service (circulator replacement, condensate trap, control replacement, etc.).

• A sediment trap must be provided upstream of the

gas controls.

• A manual gas shuto valve between the gas supply

and the boiler must be installed.

NOTICE

Gas Fing Connecon

Page 48

48 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Gas Operang Instrucons

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

Page 49

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 49

The gas supply must be capable of handling the enre gas load required at the locaon. Gas line sizing is based on gas type, the pressure drop in the system, the gas pressure supplied, and gas line type. For gas pipe sizing, refer to the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installaon Code, CSA B149.1

For some tables, you will need to determine the cubic feet per hour of gas required by dividing the gas input by the heang value of the gas (available from the local gas company). The gas input needs to include all gas products at the locaon and the maximum BTU usage at full load when all gas products are in use.

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

required. The pipe size must be able to provide the required cubic feet per hour of gas or the required BTU/hour.

The informaon below is provided as an example. The appropriate table from the applicable code must be used.

Schedule 40 Metallic Pipe Inlet Pressure: Less than 2 psi

Specic Gravity: 0.60

Informaon in table obtained from NFPA 54, ANSI Z223.1 - 2015.

Pressure Drop 0.5 in. w.c.

Nominal Pipe Size (in.)

1/2 3/4 1 1 1/4

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

10 (3) 172 360 678 1,390 20 (6) 118 247 466 957

30 (9) 95 199 374 768 40 (12) 81 170 320 657 50 (15) 72 151 284 583 60 (18) 65 137 257 528 70 (21) 60 126 237 486 80 (24) 56 117 220 452 90 (27) 52 110 207 424

100 (30) 50 104 195 400

EXAMPLE

Rinnai Model Gas Input:

Addional Appliance Total Gas Input:

Heang Value of Gas:

Cubic Feet Per Hour (CFH):

ANSWER:

65,000

BTU/HR

1,000

BTU/FT3

160,000

BTU/HR

160,000+65,000

(CFH) =

1000

225

FT3/HR

CFH =

For this example, the pipe diameter must be at least 3/4 in. pipe size and 10  (3 m) in length.

A + B

(CFH) =

Instrucons: Enter values in empty boxes. Rinnai Model Gas Input:

Addional Appliance Total Gas Input:

Heang Value of Gas:

Cubic Feet Per Hour (CFH):

ANSWER:

BTU/HR

BTU/FT3

BTU/HR

(CFH) =

FT3/HR

CFH =

A + B

(CFH) =

GAS PIPE SIZING CALCULATION WORKSHEET

Natural Gas

Gas Pipe Sizing Reference Tables

Page 50

50 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Pressure Drop 0.5 in. w.c.

Nominal Inside Pipe Size (in.)

1/2 3/4 1 1 1/4

Length in  (meters) Capacity in Thousands of BTU per Hour

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

20 (6) 200 418 787 1,620

30 (9) 160 336 632 1,300 40 (12) 137 287 541 1,110 50 (15) 122 255 480 985 60 (18) 110 231 434 892 80 (24) 101 212 400 821

100 (30) 94 197 372 763

Pressure Drop 3.0 in. w.c.

Schedule 40 Metallic Pipe Inlet Pressure: Less than 2 psi Specic Gravity: 0.6

Nominal Pipe Size (in.)

1/2 3/4 1 1 1/4

Length in  (meters)

Capacity in Cubic Feet of Gas per Hour

10 (3)

454 949 1,790 3,670

20 (6)

312 652 1,230 2,520

30 (9)

250 524 986 2,030

40 (12)

214 448 844 1,730

50 (15)

190 397 748 1,540

60 (18)

172 360 678 1,390

70 (21)

158 331 624 1,280

80 (24)

147 308 580 1,190

90 (27)

138 289 544 1,120

100 (30)

131 273 514 1,060

Informaon in table obtained from NFPA 54, ANSI Z223.1 - 2015.

Intended use: Inial supply pressure of 8.0 in. w.c. or greater.

Schedule 40 Metallic Pipe Inlet Pressure: 11 in. w.c. Specic Gravity: 1.50

EXAMPLE

Rinnai Model Gas Input:

Addional Appliance total Gas Input:

Heang Value of Gas:

Cubic Feet Per Hour (CFH):

ANSWER:

65,000

BTU/HR

1,000

BTU/FT3

160,000

BTU/HR

160,000+65,000

(CFH) =

1000

225

FT3/HR

CFH =

For this example, the pipe diameter must be at least 1/2 in. nominal pipe size and 20  (6 m) in length.

A + B

(CFH) =

EXAMPLE

Rinnai Model Gas Input:

Addional Appliance Total Gas Input:

Total Gas Input:

ANSWER:

65,000

BTU/HR

160,000

BTU/HR

= BTU/HR

Total Gas

Input

225,000

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

160,000+65,000

Natural Gas

Propane (Undiluted)

Page 51

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 51

Test the Ignion Safety Shut O Device

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

WARNING

Remove the boiler front panel. (See secon 3. About the Boiler → How to Remove the Front Panel for detailed instrucons).

Disconnect the wiring connecon from the ame rod (located on le side of boiler).

Boiler le side

Remove the wiring connecon

On the control panel, press and hold the Service Mode buon for approximately 7 seconds.

The boiler iniates one start-up aempt and four restart aempts. Aer the last start-up aempt, the boiler locks out and the gas valve shuts o. Code 501 No Flame Detected

Reconnect the wiring connecon to the ame rod. Be careful not to touch the inside of the wiring connecon.

Press the RESET buon on the control panel.

The boiler should start up. If the boiler does not start up, contact Rinnai Customer Care at 1-800-621-9419.

Replace the boiler front panel.

Page 52

52 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

• Do not use an extension cord or adapter plug

with this appliance.

• The boiler must be electrically grounded in

accordance with local codes and ordinances or, in the absence of local codes, in accordance with the Naonal Electrical Code, ANSI/NFPA No. 70.

WARNING

Power Supply

Guidelines

When connecng the power supply, follow these guidelines:

• If using the 6.5 FT (2 m) power cord (supplied

with boiler), plug it into a standard three-prong 120 VAC, 60 Hz properly grounded wall outlet.

• The boiler requires 120 VAC, 60 Hz power from a

properly grounded circuit.

• Do not rely on the gas or water piping to ground

the boiler. Ground locaons are provided inside the boiler.

• The wiring diagram is located on the inside of the

boiler front cover.

• This boiler is supplied with 120 volts and is

equipped with a three-prong (grounding) plug for your protecon against shock hazard. The plug should be plugged directly into a properly grounded three-prong receptacle. Do not cut or remove the grounding terminal from this plug.

• Disconnect incoming power to the boiler by

removing the three-prong plug before:

− Performing repairs or installaon to internal

components or accessories

− Making wiring connecons and/or changes

to the wiring terminals on the boiler

No changes may be made to the wiring of the boiler.

• All connecons should be designed in

accordance with the applicable regulaons

• Label all wires prior to disconnecon when

servicing controls. Wiring errors can cause

improper and dangerous operaon

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

CAUTION

Page 53

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 53

Electrical Connecons

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

the connecon terminal. The connecon terminals are located on the top and back of the controller.

To access the controller, remove the front panel (see secon 3. About the Boiler → How

to Remove the Front Panel for detailed instrucons).

Controller Top Connecons

Addional 120 V input (Does not include ground connecon)

120 V power supply to boiler

External pump input

DO NOT USE

This terminal is for Rinnai-use only and not for use in any installaon

External

safety

contact

DO NOT

USE

Outdoor temperature sensor

DO NOT

USE

Room thermostat

(On/O thermostat or control)

DO NOT

USE

For Rinnai

Use Only

For Rinnai

Use Only

For Rinnai

Use Only

DO NOT

USE

Not for

use in this

boiler

Controller Back Connecons

Controller

□

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

□

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

□

Conrm connecon terminals are connected correctly.

Post-Power Supply Connecon Checklist

Page 54

54 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Failure to properly commission the boiler as described in this secon may result in unreliable and unsafe burner operaon and reduced component life.

WARNING

• Work on the boiler must be carried out by a

licensed professional, using correctly calibrated instruments with current test cercaon. The commissioning instrucons are intended for

licensed professionals who have the necessary

knowledge and are approved for working on heang and gas systems.

• The boiler and its individual shut o valve must

be disconnected from the gas supply piping system during any pressure tesng of that system at test pressures in excess of 1/2 PSI (3.5kPa).

• 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 the boiler

− Prime the pump (as described in this secon)

NOTICE

1. Remove the boiler front cover. See secon “How to Remove the Front Panel” for complete instrucons.

2. Locate the vent pump.

Boiler commissioning is a procedure used aer boiler installaon to ensure the system and boiler were

installed correctly and ready for operaon.

Commissioning

Instrucons

Step 1: Prime the Pump

Safety Precauons

You Will Need:

• Philips head screwdriver

• Flat head screwdriver

• Combuson analyzer (calibrated)

3. Remove the vent pump screw.

Pump

4. Use a at head screwdriver to ensure the impeller spins freely.

5. When the impeller spins freely and water exits though the vent port, the pump is ready for operaon.

6. Replace the vent pump screw.

7. Proceed to the next step.

THIS SECTION IS INTENDED FOR THE INSTALLER

This boiler must be commissioned by a licensed professional. Installer qualicaons: A trained and qualied professional must install the appliance, inspect it, and leak test the boiler before use. The warranty will be voided due to any improper installaon. The trained and qualied professional should have skills such as: Gas sizing; Connecng gas lines, water lines, valves, and electricity; Knowledge of applicable naonal, state, and local codes; Installing venng through a wall or roof; and training in installaon of condensing boilers. Training for Rinnai Condensing Boilers is accessible online at www.trainingevents.rinnai.us.

Page 55

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 55

1. Put the boiler into operaon with a maximum DHW or heat demand.

2. From the controller home screen, press and hold the Chimney Acve buon for approximately 7 seconds.

3. Remove the plug covering the ue gas test port and place the calibrated combuson analyzer probe into the port (see right image).

4. Scroll to ON and press OK.

5. Scroll to 100% and press OK.

6. The boiler is now at maximum input.

7. Aer the boiler has run for approximately one minute, the O2 percentages displayed on the combuson analyzer should match the ranges shown in the table below.

If the ranges do not match, adjust the parameters by following the steps in the Adjust O2 Percentages secon.

The O2 percentage seng is required to be checked at commissioning, maintenance and faults and adjusted if needed.

NOTICE

The O2 percentage is required to be checked and adjusted aer a conversion from Natural Gas to Liquid Propane, or

from Liquid Propane to Natural Gas. Seng the O2 at maximum input must be performed with a calibrated

combuson analyzer that is set to the correct gas type.

WARNING

Table: Nominal O2 Percentages

Step 2: Set the O2 at Maximum Input

THIS SECTION IS INTENDED FOR THE INSTALLER

MAXIMUM INPUT MINIMUM INPUT

Model Natural Gas Liquid Propane Natural Gas Liquid Propane

M060C 4.7 - 4.9 5.0 - 5.2 6.3 - 6.5 6.6 - 6.8 M090C 4.2 - 4.4 5.0 - 5.2 5.8 - 6.0 6.6 - 6.8 M120C 4.2 - 4.4 5.0 - 5.2 5.8 - 6.0 6.6 - 6.8 M160C 4.2 - 4.4 5.0 - 5.2 5.8 - 6.0 6.6 - 6.8

Page 56

56 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Step 3: Set the O2 at Minimum Input

1. While sll in service mode (as described in the previous step), use the scroll wheel to adjust to 0%.

2. Press OK.

3. The boiler is now at minimum input.

4. Aer the boiler has run for approximately one minute, the O2 value displayed on the combuson analyzer should be 1.6% higher than the maximum input value.

Example: If maximum input value is 4.8%, then minimum input value should be 6.4%. If the values do not match, adjust the parameters by following the steps in the Adjust O2 Percentages secon.

5. When adjustments are complete, place the plug back into the ue gas test port.

6. On the controller, press and hold the Back buon unl the Home screen appears in the window.

This secon is required only if it is necessary to adjust O2 percentages. Rotate the screw on the gas valve assembly unl you reach the levels shown in the Nominal O2 Percentages table (see

secon Step 2: Set the O2 at Maximum Input).

• Rotate counter-clockwise to decrease the O2 percentage

• Rotate clockwise to increase the O2 percentage

Adjust O2 Percentages

INCREASE O2

DECREASE O2

Counter-

Clockwise

THIS SECTION IS INTENDED FOR THE INSTALLER

Page 57

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 57

Complete the following checklist when boiler installaon is complete. You should be able to answer YES to each queson. If you answer NO, installaon is not complete. Refer to the applicable secon in the Rinnai M-Series Condensing Boiler Installaon and Operaon Manual for addional informaon.

For assistance, contact your local dealer or distributor, or call Rinnai Customer Care at 1-800-621-9419.

INSTALLATION LOCATION YES NO

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

 

VENTING YES NO

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

 

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

 

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

 

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

 

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

 

SYSTEM PIPING YES NO

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

 

Have you veried the hot and cold water lines to the boiler are not interchanged?   Does the water supply to the boiler have adequate pressure? Is it free of chemicals? Did you verify it does

not exceed total hardness that will damage the heat exchanger?

 

Have you veried that no toxic chemicals were introduced to the potable water?   Did you drain the boiler if not intended to be used immediately?   Have water quality issues (if any) been addressed?

 

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

 

Are the isolaon valves installed? (for DHW systems only)

 

CONDENSATE DRAIN YES NO

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

 

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

 

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

 

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

 

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

line?

 

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

 

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

 

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

 

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

 

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

 

Post-Installation Checklist

Page 58

58 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

GAS SUPPLY YES NO

Did you verify the gas system is appropriately sized?

 

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

 

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

 

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

 

Is the inlet gas pressure within limits?

 

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

 

PRESSURE RELIEF VALVE (PRV) YES NO

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

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

Valves and Vacuum Relief Valves, CAN1-4.4?

 

Did you verify the DHW PRV is rated up to 150 psi and (at least) the maximum BTU/hr of the boiler and the heang system PRV rated to 30 PSI?

 

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

 

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

 

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

 

Is the discharge line material suitable for at least 180° F water?

 

Did you take measures to protect the PRV and PRV discharge line from freezing?   Have you veried the PRV is not plumbed with the condensate drain line?

 

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

 

POWER SUPPLY YES NO

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

 

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

 

COMMISSIONING YES NO

Did you prime the pump?   Did you set the boiler O2 at maximum input?   Did you set the boiler O2 at minimum input?

 

Page 59

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 59

Operation

Topics in this secon

• Start-Up Informaon

• Control Panel

• Boiler Display

• Basic Operaon Sengs

This secon includes instrucons for starng and operang the boiler.

Start-Up Informaon

The boiler will not immediately re up and begin operaon. The boiler will go into an automac de-aeraon program that is approximately 7 minutes in duraon.

NOTICE

It can take up to a week before all the air has disappeared from a newly lled and pressurized installaon. During the rst week of operaon, noises can be heard which indicate the presence of air. The automac air vent in the boiler will remove the air, which means the water pressure will reduce some during this period and therefore addional water will be necessary to maintain proper pressure in the heang system.

Water Pressure Needed for Operaon

• The boiler is in normal operaon between 19 PSI and 43.5 PSI.

• Below 10.1 PSI, the boiler will have an error code (Fault 108 on the display) and be blocked from operaon.

Increasing the heang system water pressure will be necessary for operaon.

• Between 10 PSI and 19 PSI, operaon will be limited to 80% (Alert Warning 1P4 will appear on the display).

• Above 43.5 PSI, the boiler will have an error code (Fault 109 on the display) and be blocked from operaon as

the pressure is too high.

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

NOTICE

Page 60

60 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Control Panel

Power (On/O)

Press to turn the boiler on or o. (I = On O = O)

Selector Wheel

Turn the wheel le or right to scroll through available menu opons

Back

Press to go back one screen.

Reset

Press to reset a fault code.

See Reset Fault Code secon (in this secon) for more informaon

Press to select an item.

Chimney Acve (Service Mode)

Press to enter into service mode which allows adjustment of high re/low re and O2 sengs.

See Chimney Acve (Service Mode) secon (in this secon) for more informaon

Boiler Display

Displays boiler status informaon.

See Boiler Display secon (next secon) for more informaon

❶

❷

❸

❹

❺

❻

❼

❶

❷

❸

❹

❺

❻

❼

Access the Control Panel

Slowly lower the protecve panel on the front cover to access the control panel.

Control panel

Control Panel Features

Page 61

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 61

Boiler Display

Heang supply setpoint

DHW setpoint temperature

DHW status symbol A box around the faucet symbol indicates

DHW is in operaon

DHW comfort or economy mode is acve

Boiler status indicator, such as DHW is acve, Central Heang is acve, error messages, and other status informaon

Fire level status

Scale rises as the temperature increases

HOT

COOL

Visual illustraon of current central heang temperature

❶

❷

❸

❹

❺

❻

❼

❽

❾

❿

⓫

⓬

❶

❷ ❸

❹ ❺

❻

Central heang status symbol A box around the radiator symbol indicates

central heang is in operaon

❼

❽

❾

❿

⓫

⓬

Current date and me

Outdoor temperature

Current central heang system water pressure

High re (maximum of six bars)

Low re

DHW IN OPERATION

Visual illustraon of current hot water temperature

Scale rises as the hot water temperature increases

HOT

COOL

DHW NOT IN OPERATION

CENTRAL HEATING IN OPERATION

CENTRAL HEATING NOT IN OPERATION

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

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62 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

To turn the boiler on or o, press the Power switch.

I = On O = O

Basic Operaon Sengs

Turn the Boiler On or O

Change the Central Heang Setpoint Temperature

From the controller Home screen, press OK.

Turn the selector wheel to highlight Complete

Menu. Press OK.

CH Sengs is highlighted. Press OK.

CH Setpoint Temp is highlighted. Press OK.

The opon T set Z1 is highlighted. Press OK. Note: T set Z2 and T set Z3 are inacve funcons.

Turn the selector wheel to unl the desired temperature appears on the display. Press OK.

Available temperature sengs (minimum to maximum): 68° F - 185° F (20° C - 85° C)

Press the Back buon unl the Home screen appears on the display.

Home screen

Page 63

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 63

Change the Domesc Hot Water Setpoint Temperature

Turn the selector wheel to unl the desired

temperature appears on the display. Press OK.

Available temperature sengs: (minimum - maximum)

104° F - 149° F (40° C - 65° C)

Press the Back buon unl the Home screen appears on the display.

From the controller Home screen, press OK.

Turn the selector wheel to highlight Complete Menu. Press OK.

Turn the selector wheel to highlight DHW Sengs. Press OK.

Opon DHW Comfort Setpoint Temp is highlighted. Press OK.

The current DHW comfort setpoint temperature is displayed. Press OK.

Home screen

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64 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Change the Altude

From the controller Home screen, press the BACK and OK buons at the same me for 7

seconds.

Turn the selector wheel so that 007 appears as the technical code.

Turn the selector wheel to highlight Complete Menu. Press OK.

Turn the selector wheel to highlight 2 Boiler Parameters. Press OK.

Opon 2.0 General is highlighted. Press OK.

Turn the selector wheel to highlight

2.0.4 Altude. Press OK.

Press the Back buon unl the Home screen appears on the display.

Scroll to the desired altude and press OK.

Note: Altude is displayed in Feet (FT) measurements.

Home screen

Page 65

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 65

Change DHW Comfort Mode Seng

Comfort mode is a domesc hot water seng that enables the boiler to re up more oen to maintain the heat exchanger temperature. This enables quicker delivery of hot water to hot water xtures.

By default, comfort mode is disabled (turned o). To enable (turn on) comfort mode, follow the steps below.

Comfort mode has three opons:

Opon 1: Always Acve

This opon provides connuous hot water all day

long. The boiler maintains the primary heat exchanger

temperature to quickly deliver hot water to the plate heat exchanger. This selecon provides the quickest delivery of hot water to hot water xtures, but uses the most energy.

Opon 2: Time Based

The boiler maintains the primary heat exchanger temperature based o of me selecons. This selecon requires more energy use than when disabled, but not as much energy use as the “Always Acve” opon.

Opon 3: Disabled

The boiler operates and produces hot water; however,

it will not maintain the primary heat exchanger temperature for quicker hot water producon. This selecon saves some energy, but requires longer me to provide hot water to the hot water xtures.

Always Acve

To enable the Always Acve comfort mode seng, follow the steps below.

From the controller Home screen, press OK.

Turn the selector wheel to highlight Complete Menu. Press OK.

Home screen

Turn the selector wheel to highlight DHW Sengs. Press OK.

Turn the selector wheel to highlight Comfort Funcon. Press OK.

Turn the selector wheel to highlight Always Acve. Press OK.

The message below appears.

The Always Acve comfort mode is selected. To exit, press the Back buon unl the Home

screen appears on the display.

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66 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Disabled

To disable Comfort mode, follow the steps below.

4 5

From the controller Home screen, press OK.

Turn the selector wheel to highlight Complete Menu. Press OK.

Home screen

Turn the selector

wheel to highlight DHW Sengs. Press OK.

Turn the selector wheel to highlight Comfort Funcon. Press OK.

Disabled is selected

Press OK.

Comfort mode is disabled. To exit, press the Back buon unl the Home

screen appears on the display.

The message below appears.

Page 67

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 67

Time Based

From the controller Home screen, press OK.

Turn the selector wheel to highlight Complete Menu. Press OK.

Home screen

Turn the selector wheel to highlight DHW Sengs.

Press OK.

Turn the selector wheel to highlight Comfort Funcon. Press OK.

Turn the selector wheel to highlight Time Based. Press OK.

The message below appears.

To enable the Time Based comfort mode seng, follow the steps below.

Press the Back buon one me. The following screen appears.

Select Time program.

Select one of the two opons:

• Free Time Programming—user-dened

mes for when comfort mode is acve

• Preset programs—opons for preset

mes for comfort mode to be acve

DHW is selected.

Press OK.

Turn the selector wheel to highlight Set me program. Press OK.

You then select the days with the same me program. Use the selector wheel to scroll to the day(s) you want the same. Select "OK" on each day that will have the same schedule.

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68 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Change the Language

To change the language appearing on the boiler display, follow the steps below.

1. From the controller Home screen, press OK.

2. Turn the selector wheel to highlight Complete Menu. Press OK.

3. Turn the selector wheel to highlight Screen Sengs. Press OK.

4. Language is highlighted. Press OK.

5. Turn the selector wheel

to highlight the desired

language and press OK.

6. The language is changed. To exit, press the Back buon unl the Home screen appears on the display.

Change Units of Measurement

Change the Time and Date

To change the me and date appearing on the boiler

display, follow the steps below.

1. From the controller Home screen, press OK.

2. Turn the selector wheel to highlight Complete

Menu. Press OK.

3. Turn the selector wheel to highlight Screen

Sengs. Press OK.

4. Turn the selector wheel to highlight Time & Date.

Press OK.

5. Edit the following screen.

6. Press Save.

7. To exit, press the Back buon unl the Home

screen appears on the display.

To change the unit of measurements appearing on the boiler display, follow the steps below.

1. From the controller Home screen, press OK.

2. Turn the selector wheel to highlight Complete Menu. Press OK.

3. Turn the selector wheel to highlight Screen Sengs. Press OK.

4. Turn the selector wheel to highlight System measurement unit. Press OK.

5. Select Internaonal System or USA System.

6. Press Save.

7. To exit, press the Back buon unl the Home screen appears on the display.

Page 69

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 69

Some of the checks below should be performed by a licensed professional. Consumers

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

WARNING

Fault Codes

Code Descripon Reason(s)

Where Error is

Occurring

How to Resolve

101 Overheat

• The supply or return water

temperature is greater than 212° F for 3 seconds.

• The return water temperature is

within 9° F of the supply temperature for 24 hours

• The supply and return probe check

failed

Central Heang operaon

Press the Reset buon

102 Pressure Sensor

Damaged

The pressure sensor has a short or open circuit

Central Heang operaon

Troubleshoot the pressure sensor

103 Flow Check Failed 3

Times

Three ow checks failed within 15 minutes. 1P1 (Flow Check 1 Failed) was the last error detected.

Central Heang operaon

Press the Reset buon

104 Flow Check 2 Failed More than 27° F per second

change in supply or return water temperature

Central Heang operaon

Press the Reset buon

105 Flow Check Failed 3

Times

Three ow checks failed within 15

minutes. 1P3 (Flow Check 4 Failed) was the last error detected.

Central Heang

operaon

Press the Reset buon

106 Flow Check Failed 3

Times

Three ow checks failed within 15 minutes. 1P4 (Filling Needed) was the last error detected.

Central Heang operaon

Press the Reset buon

107 Flow Check 5 Failed The return water temperature is more

than 63°F higher than the supply water temperature and the burner is on

Central Heang operaon

Press the Reset buon

108 Supply Pressure is below

Minimum Pressure

• The supply pressure is below

minimum pressure and the burner is on

• The burner is o with the supply

pressure below the minimum

pressure and deaeraon is acve

for 40 seconds

Central Heang operaon

Raise the supply pressure above the minimum pressure

109 Supply Pressure is above

Maximum Pressure

The supply pressure is above the maximum pressure

Central Heang operaon

Lower the pressure to

4.3 PSI below the maximum supply pressure

110 Send Probe Damaged

The supply sensor has a short or open circuit

Central Heang operaon

Troubleshoot the supply sensor

112 Return Probe Damaged

The return sensor has a short or open circuit

Central Heang operaon

Troubleshoot the return sensor

114 Outdoor Probe Damaged

The outdoor sensor is installed and has a short or open circuit

Central Heang operaon

Troubleshoot the outdoor sensor

When the boiler detects an error, a 3-digit blocking or fault code appears on the controller display.

• A blocking code is a temporary error that can be automacally corrected by the boiler.

• A fault code requires the error to be reset and/or corrected for the boiler to go back into a normal operang mode.

In the table below, fault codes are labeled with “Press the Reset buon” in the “How to Resolve” column.

An overview of the most common blocking and fault codes are listed below.

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70 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Code Descripon Reason(s) Fault Locaon How to Resolve

1P1 Flow Check 1 Failed

Change in supply temperature of 12.6°

F to 27° F in one second

Central Heang

operaon

The boiler will aempt

to correct for 10

seconds

1P2 Flow Check 3 Failed

The supply water temperature is more than 99°F higher than the return water temperature

Central Heang operaon

The boiler will aempt to correct for 10 seconds

1P3 Flow Check 4 Failed

The return water temperature is 18° F higher than the supply water temperature

Central Heang operaon

The boiler will aempt to correct for 10 seconds

1P4 Filling Needed

Supply pressure is below the warning pressure

Central Heang operaon

Raise the supply pressure above the minimum pressure

201

Combi Domesc Hot

Water NTC Damaged

The Domesc Hot Water sensor has a

short or open circuit

Domesc Hot

Water operaon

Troubleshoot the Domesc Hot Water

sensor

203

Tank NTC Sensor Damaged

The tank probe has a short or open circuit

Domesc Hot Water operaon

Troubleshoot the tank probe

303 PCB Fault PC board soware or hardware error PC Board Press the Reset buon

304 Too Many Reset

The Reset buon was pressed more than 5 mes in 15 minutes

PC Board

Wait for 15 minutes to elapse without pressing the Reset buon

306 PCB Fault PC Board error PC Board Press the Reset buon 309 Gas Relay Check Failed

Flame detected for 3 seconds aer the gas valve closed

PC Board Press the Reset buon

3P9

Scheduled Maintenance-

Call Service

The maintenance mer has expired PC Board

Reset the monthly mer for the next

maintenance interval

reminder

501 No Flame Detected Flame not detected

Flame ignion/ detecon

Press the Reset buon

502

Flame Detected with Gas Valve Closed (False Flame)

Flame detected before the gas valve opened

Flame ignion/ detecon

Troubleshoot the ame rod, igniter, electrode, and gas valve

504 Flame Li Loss of ame during burner operaon

Flame ignion/ detecon

Press the Reset buon

5P1 1stIgnit Failed

Flame not detected during the rst ignion aempt

Flame ignion/ detecon

Fault will go away at the end of the second ignion aempt

5P2 2ndIgnit Failed

Flame not detected during the second ignion aempt

Flame ignion/ detecon

Fault will go away at the

end of the third ignion

aempt

5P3 Flame Li Loss of ame during burner operaon

Flame ignion/ detecon

Fault will go away with proper ignion

612 Fan Error Fan speed is too high or too low Fan/Vent Press the Reset buon

1P9

Water Pressure Dynamic Check

No pressure change aer 5 seconds of running the pump

Central Heang operaon

The boiler will check the pressure for 30 seconds and the error will go away with proper inlet pressure

140

Water Pressure Dynamic Check

Two 1P9 water pressure checks failed

Central Heang operaon

Press the Reset buon

Page 71

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 71

Reset a Fault Code

When an error occurs, the fault code and descripon appear on the display.

The following message appears:

Do you really want to perform the reset?

• Press OK to reset the error

• Press the ESC keyboard buon to cancel

reset and return to the previous screen

To reset the fault code, press the RESET buon.

The Reset in Progress message appears.

The Fault Solved message appears.

Aer the code is reset, the Home screen automacally appears.

Page 72

72 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

View Error Code History

From the controller Home screen, press the BACK and OK buons at the same me for

7 seconds.

Turn the selector wheel so that 007 appears as the technical code.

Turn the selector wheel to highlight Complete Menu. Press OK.

Turn the selector wheel to highlight 8 Service Param. Press OK.

Home screen

Turn the selector wheel to highlight

8.6 Error History. Press OK.

Opon 8.6.0 Last 10 Errors is highlighted.

Press OK.

Scroll to view the last 10 errors.

Error

descripon

Error number

Time and date when error occurred

Page 73

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 73

Chimney Acve (Service Mode)

The Chimney Acve (service mode) buon puts the boiler into service mode which allows adjustment of high re/low re and O2 sengs. To enter Chimney Acve (service mode):

From the controller Home screen, press and hold the Chimney Acve buon for approximately 7 seconds.

Chimney Acve (service mode) defaults to 100%. Use the selector wheel to adjust between 0% to

100% and then press OK.

• 0% (boiler will run on low re/low load)

• 100% (boiler will run on maximum re/full load)

To exit Chimney Acve (service mode), press the Back buon unl the Home screen appears on the display.

The following screen appears indicang that Chimney Acve (service mode) is acve.

This secon should be performed by a licensed professional. Consumers should never aempt any acon that they are not qualied to perform.

WARNING

Home screen

Page 74

74 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

The following maintenance items are required for the proper operaon of your boiler.

The appliance must be inspected annually by a licensed professional. Repairs and maintenance shall be performed by a licensed professional. The licensed professional must verify proper operaon aer servicing.

CLEANING

1. It is imperave that control compartments, burners, and circulang air passageways of the appliance be kept clean. Check burner ame for proper color. Once ignited, the ame must cover the surface of the burner.

To protect yourself from harm, before performing maintenance:

• Turn o the electrical power supply by unplugging

the power cord or by turning o the electricity at the circuit breaker. (The boiler controller does not control the electrical power.)

• Turn o the gas at the manual gas control valve,

usually located immediately below the boiler.

• Turn o the incoming water supply. This can be

done at the isolaon valve immediately below the boiler or by turning o the water supply to the building.

WARNING

Keep the appliance area clear and free from combusble materials, gasoline, and other ammable vapors and liquids.

WARNING

This boiler must be inspected annually by a

licensed professional. Repairs and maintenance shall be performed by a licensed professional. The licensed professional must verify proper operaon aer servicing.

The ame must burn with a clear, blue, stable ame. If the ame does not have this appearance, complete the following steps:

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

2. Remove the front panel.

3. Use a vacuum to remove dust from the main burner and fan blades. Do not use a wet cloth or spray cleaners on the burner. Do not use volale substances such as benzene and thinners; they may ignite or fade the paint.

4. Use so dry cloth to wipe cabinet.

VENT SYSTEM

The vent system should be inspected at least annually for blockages or damage. If the vent is blocked contact a licensed professional. If using a vent screen or room air lter, yearly inspect for debris and blockages and clean if needed.

MOTORS

Motors are permanently lubricated and do not need periodic lubricaon. However you must keep fan and motor free of dust and dirt by cleaning annually.

BOILER CONTROLLER

Use a so damp cloth to clean the boiler controller. Do not use solvents.

WATER QUALITY

Refer to the Water Quality Guidelines secon to determine if your water needs to be treated or condioned. The water

must be potable, free of corrosive chemicals, sand, dirt, or other contaminates. It is up to the installer to ensure the water does not contain corrosive chemicals, or elements that can aect or damage the heat exchanger. Water that contains chemicals exceeding the levels required aect and damage the heat exchanger. Replacement of the heat exchanger due to water quality damage is not covered by the warranty. SNOW ACCUMULATION

• Keep the area around ue terminal free of snow and ice.

The boiler will not funcon properly if the combuson

air or exhaust vent pipes are impeded (blocked or parally blocked) by obstrucons.

• Keep the condensate drain line free of snow and ice.

Ensure the line is not blocked or clogged and that condensate is owing freely.

COASTAL INSTALLATIONS

Installaons located in or near coastal areas may require addional maintenance due to corrosive airborne ocean salt. If corrosion is observed on the body of the boiler, the boiler shall be inspected to ensure proper operaon and if necessary, repaired or replaced.

Maintenance

Boiler Maintenance

Topics in this secon

• Boiler Maintenance

• Flushing the Plumbing System for

Central Heang Systems

Page 75

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 75

Tesng the pressure relief valve should only be performed by a licensed professional. Water discharged from the pressure relief valve could cause severe burns

instantly or death from scalds.

WARNING

PRESSURE RELIEF VALVE

Operate the pressure relief valve manually once a year. In doing so, it will be necessary to take precauons with regard to the discharge of potenally scalding hot water under pressure. Ensure discharge has a safe place to ow. Contact with your body or other property may cause damage or harm.

FREEZE PROTECTION

Freeze protecon for new or exisng systems must use

glycol that is specially formulated for this purpose. This includes inhibitors, which prevent the glycol from aacking the metallic components. The glycol should be for mul-metallic components. For a list of approved system cleaners, inhibitors, and anfreezes, refer to secon 13. Appendices > Approved Cleaners, Inhibitors and Anfreezes.

Make certain to check that the system uid is correct for the glycol concentraon and inhibitor level. The system should be tested at least once a year and as

recommended by the producer of the glycol soluon.

The allowed maximum concentraon is 50 percent.

VISUAL INSPECTION OF FLAME

Verify proper operaon aer servicing. The burner must ame evenly over the enre surface when operang correctly. The ame must burn with a clear, blue, stable ame. See the parts breakdown of the burner for the locaon of the view ports.

The ame paern should be as shown in the images below:

SATISFACTORY FRONT VIEW

BLUE FLAME

FLAME ROD

YELLOW FLAME

FLAME ROD

UNSATISFACTORY

FRONT VIEW

When replacing an exisng boiler, the heang system shall be ushed with an approved system cleaner before the new boiler is added to the system. If the old boiler has already been removed, a bypass must be piped in when the new boiler is installed to facilitate the ushing of the system.

The boiler must be isolated from the system while the system is ushed. No system cleaner should ever enter the boiler heat exchanger due to its causc nature which could damage the heat exchanger.

Reference secon Approved Cleaners, Inhibitors and Anfreezes in the Appendix for an approved list of sys-

tem cleaners, inhibitors, and anfreezes.

You Will Need

• Garden hose (Qty 3)

• 5-gallon bucket

• Approved system cleaner

• Circulang pump

Flushing the Plumbing System for Central Heang Systems

Page 76

76 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Valve 2

System Return

System

Cleaner

System Supply

Hose 2

Hose 3

Hose 1

Valve 4

Valve 1

Valve 3

BD1 BD2

Instrucons

The following steps reference the image at the boom of the page.

1. If the installaon is a zone system (ulizes mulple zones), purge out each zone individually.

2. Close the automac ll valve on the system (F1).

3. Close the return side purge staon (BD2) and disconnect the hose (H3).

4. Open the main valve on the system return (V3).

5. Close the bypass valve below the boiler (V4).

6. Open the shuto valves on both the supply and return connecons below the boiler (V1 and V2).

7. Clean out the dirt trap per manufacture’s instrucons.

8. The boiler and system may now be lled through the ll valves.

Notes:

• Water should be within guidelines for water quality listed in the Water Quality Guidelines secon (4. Installaon

→ Choose an Installaon Locaon → 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 the Water Quality Guidelines secon (4. Installaon → Choose an Installaon Locaon → Water Quality Guidelines)

• Test the pH of the water that will be used for lling the system.

Page 77

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 77

Appendices

Approved Cleaners, Inhibitors and Anfreezes

Approved System Cleaners:

• Fernox F3 Cleaner

• Noble Noburst Hydronic System Cleaner

• Rhomar Hydro-Solv 9100

• Sennel X400

Approved System Inhibitors:

• Noble Noburst AL Inhibitor

• Rhomar Pro-tek 922

• Sennel X100

Approved System Anfreezes:

• Chem Frost 100%

• Fernox Alphi 11

• Hall-Chem Solar II

• Noble Noburst AL

• Rechochem Recofreeze AL

• Rhomar RhoGard Mutli-Metal (AL safe)

• Sennel X500

Below is a list of approved system cleaners, inhibitors, and anfreezes for use in hydronic plumbing systems ulizing Rinnai boilers.

Topics in this secon

• Approved Cleaners, Inhibitors and

Anfreezes

• Boiler Parts

• System Applicaon Examples

• Gas Conversion

• Wiring Diagram

• Ladder Diagram

• Pressure Drop and Water Flow Curve

• Massachuses State Gas Regulaons

• Warranty

IMPORTANT

• System cleaners are not to be used in the boiler (use isolang valves at header assembly).

• 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.

Page 78

78 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Boiler Casing

Boiler Parts

Item # Descripon Part Number Quanty

M060C M090C M120C M160C

12 Front cover 809000145 1 1 1 1 13 Screw M5 x 12 mm 809000019 2 2 2 2 14 Hinge 809000146 2 2 2 2 50 2-pipe adapter 802000005 1 1 1 1 51 3 in. PVC adapter 802000006 2 2 2 2 53 Measurement port plug 808000024 1 1 1 1 54 Gas valve screw plug 809000148 1 1 1 1

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Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 79

Heat Exchanger

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80 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Item # Descripon Part Number Quanty

M060C M090C M120C M160C

31 Gasket 808000037 1 1 1 1

32 Burner hood

806000035 1 - - 806000036 - 1 1 1

33 Gasket kit

806000037 1 - - 806000038 - 1 1 1

34 Burner

806000032 1 - - -

806000033 - 1 1 1

36 Electrode gasket 805000062 1 1 1 1

37 Heat exchanger

807000169 1 - - 807000170 - 1 1 1

38 Condensate tray gasket

807000135 1 - - 807000136 - 1 1 1

39 Condensate tray

807000137 1 - - -

807000138 - 1 1 1 41 Condensate trap latch 807000139 1 1 1 1 42 Flue gasket 802000002 1 1 1 1 43 Exhaust vent box 802000003 1 1 1 1 44 Flue/condensate tray gasket 802000004 1 1 1 1 46 De-aerator 807000024 1 1 1 1 47 Clamp bar 809000147 2 2 2 2 48 Silencer 808000038 1 1 1 1 49 Silencer gasket 808000039 1 1 1 1 99 Water control assembly retenon clip 807000160 6 6 6 6

110 Allen head bolt M5 x10 mm 809000150 4 4 4 4

132

808000035 1 - - -

Fan/venturi

808000036 - 1 1 1

143 Ignion/Electrode assembly 805000059 1 1 1 1 144 Igniter cable 805000066 1 1 1 1 145 Supply temperature sensor 805000056 1 1 1 1

Heat Exchanger (Connued)

Page 81

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 81

Hydraulic Parts/Pipes

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82 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Item # Descripon Part Number Quanty

M060C M090C M120C M160C

79 Condensate collector kit 807000140 1 1 1 1 80 Condensate drain kit 807000141 1 1 1 1 81 Condensate drain o-ring Ø28.25 x 2.62 mm 807000142 1 1 1 1 82 Condensate drain inner tube 807000143 1 1 1 1 83 Condensate drain tube o-ring Ø37.69 x 3.53 mm 807000144 1 1 1 1 84 Condensate drain outer tube 807000145 1 1 1 1 85 Condensate collector cover gasket 807000146 1 1 1 1

86 Plate heat exchanger

807000147 1 - - -

807000148 - 1 1 1 87 Plate heat exchanger o-ring 18.64 x 3.53 mm 807000149 1 1 1 1 88 Cold water supply pipe 807000150 1 1 1 1 89 De-Aerator o-ring Ø13.94 x 2.62 mm 809000028 1 1 1 1 90 Water control assembly—return 807000151 1 1 1 1 91 3-way valve cartridge 807000152 1 1 1 1

92 O-ring Ø18 x 2 mm 809000162 1 1 1 1

Flow restrictor-yellow 807000154 1 - - -

Flow restrictor-blue 807000155 - 1 1 1 94 3-way valve/pump pipe 807000156 1 1 1 1 95 O-ring Ø21.89 x 2.62 mm 809000088 1 1 1 1 96 Water control assembly-supply 807000157 1 1 1 1 99 Water control pipe retenon clip 807000160 6 6 6 6 100 Bolt M3 x 30 809000149 2 2 2 2

101 Water control assembly supply plug 807000161 1 1 1 1

102 Pump gasket 1 in. 807000099 2 2 2 2 103 Pump connecon assembly 807000162 1 1 1 1 110 Allen head bolt M5 x10 mm 809000150 4 4 4 4 114 Bypass valve kit 807000167 1 1 1 1 115 Gas/DHW connecon ng 1/2 in. FNPT x 3/4

in. MNPT

806000041 3 3 3 3

116 Supply/return ng 3/4 in. FNPT x 1 in. MNPT 807000168 2 2 2 2 126 O-Ring Ø21.82 x 3.53 mm 807000153 3 3 3 3

Hydraulic Parts/Pipes (Connued)

Page 83

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 83

Hydraulic Parts/Pipes (Connued)

Item # Descripon Part Number Quanty

M060C M090C M120C M160C

129 Flow sensor retenon clip 809000151 1 1 1 1 130 Gas valve 806000034 1 1 1 1 131 3/4 in. gas valve gasket 809000062 1 1 1 1 133 Yellow silicone o-ring Ø13.94 x 2.62 mm 809000055 1 1 1 1 134 Gas pipe to gas valve 806000047 1 1 1 1 135 Gas pipe/gas valve to fan 806000048 1 1 1 1 136 3-way valve actuator 807000131 1 1 1 1 137 DHW ow sensor 805000061 1 1 1 1 138 DHW sensor 805000064 1 1 1 1 139 Pump 807000132 1 1 1 1 140 Water pressure sensor 805000058 1 1 1 1 141 Return temperature sensor 805000057 1 1 1 1 161 Clip Ø19 mm 809000158 1 1 1 1

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84 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Electrical Components

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Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 85

Item # Descripon Part Number Quanty

M060C M090C M120C M160C

142 Ignion control box 805000060

1 1 1 1

146 controller casing/back 809000152

1 1 1 1

147 PC Board 805000055

1 1 1 1

148 Key pad 805000067

1 1 1 1

149 Controller casing/front 809000153

1 1 1 1

150 Hinge support 809000154

2 2 2 2

152 Fuse 4A (250V) 805000068

1 1 1 1

153

Screw terminal-white 805000069

1 1 1 1

Screw terminal-blue 805000071

1 1 1 1

Screw terminal-red 805000072

1 1 1 1

154 Wire harness 805000073

1 1 1 1

156 Controller gasket 809000155

1 1 1 1

157 Controller scroll wheel 809000156

1 1 1 1

159 Controller cover 809000157

1 1 1 1

160 On/o switch 805000076

1 1 1 1

Electrical Components (Connued)

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86 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

System Applicaon Examples

Single Zone with Hydraulic Separaon

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

NOTE

Primary/secondary piping is necessary in the following applicaons: when using external pumps; large zoned systems; high ow applicaons; systems with high dierenal pressures; and systems with pressure drops higher than 20 FT of head (see the Pressure Drop and Water Flow Curve in secon 13 Appendices for pressure curve informaon).

Page 87

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 87

Single Zone without Hydraulic Separaon

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

NOTE

For systems without hydraulic separaon, care needs to be taken in reference to the pressure drop of the system (most restricve loop) and the boiler at the necessary central heang system ow rate. Refer to the Pressure Drop and Water Flow Curve secon in the Appendices for more informaon.

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88 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Air Handler with Hydraulic Separaon

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

NOTE

Page 89

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 89

Mulple Zones with Hydraulic Separaon

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

NOTE

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90 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Mulple Zones without Hydraulic Separaon

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

NOTE

Page 91

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 91

Mulple Zones (with Pump) with Hydraulic Separaon

This picture illustrates a suggested arrangement. Some of the ngs are oponal.

LEGEND

NOTE

Page 92

92 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

This boiler is congured for Natural Gas only. To convert to Propane Gas, follow the instrucons in this secon.

WARNING

The conversion kit shall be installed by a qualied service agency in accordance with the manufacturer’s instrucons and all applicable codes and requirements of the authority having jurisdicon. The informaon in these instrucons must be followed to minimize the risk of re or explosion or to prevent property damage, personal injury or death. The qualied service agency is responsible for the proper installaon of this kit. The installaon is not proper and complete unl the operaon of the converted appliance is checked as specied in the manufacturer’s instrucons supplied with the kit.

FOR INSTALLATIONS IN CANADA, THE CONVERSION SHALL BE CARRIED OUT IN ACCORDANCE WITH THE REQUIREMENTS OF THE PROVINCIAL AUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE REQUIREMENTS OF THE CGA-B149.1, NATURAL GAS AND PROPANE INSTALLATION CODE.

The appliance must be installed in accordance with:

• Local codes or, in the absence of local codes, the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1,

Natural Gas and Propane Installaon Code.

• The Manufactured Home Construcon and Safety Standard, Title 24 CFR, Part 3280 and/or CAN/CSA Z240 MH

Series, Mobile Homes, Series M86 / Manufactured Home Construcon and Safety Standard, Title 24 CFR.

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

If subsequent conversions are made, then a new conversion label must be placed on the boiler to accurately reect the gas type.

NOTICE

Failure to correctly assemble the components according to these instrucons may result in a gas leak or explosion.

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

Do not touch any other areas on the PC board other than the described buons while power is supplied to the appliance. Parts of the PC board are supplied with 120 volts AC.

Gas Conversion

Safety Precauons

WARNING

Page 93

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 93

5. Unscrew the gas valve and gas venturi

connecons.

7. Pull out the yellow gasket from the gas venturi.

1. Disconnect electrical power to the boiler.

2. Turn o the boiler’s gas supply by turning o

the gas control valve.

3. Remove the boiler’s front panel (for details, see

3. About the Boiler > How to Remove the Front Panel).

4. Remove the air supply damper:

• Unclip the Velcro piece

• Li up the air supply damper to remove

and gently place aside

Gas Conversion Instrucons

Air supply damper

Gas line

6. Remove the gas line and place aside.

Gas line removed

You Will Need:

• Conversion Kit (supplied with boiler)

• Adjustable wrench

• Combuson analyzer

Instrucons:

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94 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

9. Replace the yellow gasket into the gas venturi.

8. Remove the Liquid Propane restrictor in the gas venturi.

10. Reconnect the gas valve, gas venturi connecons

and gas line.

11. Reconnect the air supply damper.

12. Locate the controller. Remove all screw terminals

and unclip the 6 tabs from the front panel.

13. Remove the front housing of the PCB.

14. Insert the EEPROM key (included with conversion

kit) into the connector on the PCB.

18. Press the Back buon for approximately 7 seconds.

Your psi values may dier than the values shown in image.

Controller top view

Controller boom view

Screw terminals

15. Reaach the PCB front housing and screw terminals.

16. Connect electrical power to the boiler.

17. The Airpurge acve screen appears on the boiler

display.

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Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 95

19. The Flash Memory Detected screen appears. Press OK.

20. The following screen appears indicang data

parameters have been copied to the Mainboard.

21. The Home screen briey appears on the display and

then the boiler turns o.

Home screen

22. Aer a few seconds, the boiler automacally

turns on and goes into Airpurge acve mode.

Your psi values may dier than the values shown in image.

23. Remove the EEPROM key from the PCB:

a. Disconnect power to the boiler

b. Remove the front housing of the PCB. c. Remove the EEPROM key from the

connector.

24. Reaach the PCB front housing and screw terminals. Clip the 6 tabs back into place.

25. Connect electrical power to the boiler. The boiler will be back in normal operang mode with the proper gas type parameters.

26. Replace the boiler front panel.

27. The conversion process is complete. You need

to verify the O2 sengs in minimum and maximum input for your new gas type. See secon 9 Commissioning for detailed instrucons.

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96 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

Wiring Diagram

Page 97

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 97

Ladder Diagram

Page 98

98 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

0 1 2 3 4 5

7 8

Water Flow (GPM)

Pressure Loss (Feet of Head)

* Pressure drop curve applies to all M-Series Condensing Boilers (M060C, M090C, M120C and M160C).

Pressure Drop and Water Flow Curve

Page 99

Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual 99

Resistance/Temperature Table for Sensors

Outdoor Reset Sensor (T4)

Supply Sensor (T1) Return Sensor (T2)

DHW Sensor (T3)

NTC1k (25°C) NTC10k (25°C)

Temperature (°C) Temperature (°F) Resistance (Ω) Temperature (°C) Temperature (°F) Resistance (Ω)

-10 14.0 4.574 -10 14.0 55.047

-9 15.8 4.358 0 32.0 32.555

-8 17.6 4.152 10 50.0 19.873

-7 19.4 3.958 12 53.6 18.069

-6 21.2 3.774 14 57.2 16.447

-5 23.0 3.600 16 60.8 14.988

-4 24.8 3.435 18 64.4 13.674

-3 26.6 3.279 20 68.0 12.488

-2 28.4 3.131 22 71.6 11.417

-1 30.2 2.990 24 75.2 10.449

0 32.0 2.857 26 78.8 9.573 1 33.8 2.730 28 82.4 8.779 2 35.6 2.610 30 86.0 8.059 3 37.4 2.496 32 89.6 7.406 4 39.2 2.387 34 93.2 6.811 5 41.0 2.284 36 96.8 6.271 6 42.8 2.186 38 100.4 5.779 7 44.6 2.093 40 104.0 5.330 8 46.4 2.004 42 107.6 4.921

9 48.2 1.920 44 111.2 4.547 10 50.0 1.840 46 114.8 4.205 11 51.8 1.763 48 118.4 3.892 12 53.6 1.690 50 122.0 3.605 13 55.4 1.621 52 125.6 3.343 14 57.2 1.555 54 129.2 3.102 15 59.0 1.492 56 132.8 2.880 16 60.8 1.433 58 136.4 2.677 17 62.6 1.375 60 140.0 2.490 18 64.4 1.320 62 143.6 2.318 19 66.2 1.268 64 147.2 2.159 20 68.0 1.218 66 150.8 2.013 21 69.8 1.170 68 154.4 1.878 22 71.6 1.125 70 158.0 1.753 23 73.4 1.081 72 161.6 1.638 24 75.2 1.040 74 165.2 1.531 25 77.0 1.000 76 168.8 1.433 26 78.8 0.962 78 172.4 1.341 27 80.6 0.926 80 176.0 1.256 28 82.4 0.892 82 179.6 1.178 29 84.2 0.858 84 183.2 1.105 30 86.0 0.827 86 186.8 1.037 35 95.0 0.687 88 190.4 0.974 40 104.0 0.575 90 194.0 0.915

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100 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual

The instrucons shall include the test procedure set forth below: At the me of removal of an exisng boiler, the following steps shall be followed with each other appliances remaining

connected to the common venng system are not in operaon.

1. Seal any unused openings in the common venng system.

2. Visually inspect the venng system for proper size and horizontal pitch and determine there is no blockage or restricon, leakage, corrosion and other deciencies which could cause an unsafe condion.

3. Insofar as is praccal, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venng system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venng system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close replace dampers.

4. Place in operaon the appliance being inspected. Follow the lighng instrucons. Adjust thermostat so appliance will operate connuously.

5. Test for spillage at the dra hood relief opening aer 5 minutes of main burner operaon. Use the ame of a match or candle, or smoke from a cigaree, cigar, or pipe.

6. Aer it has been determined that each appliance remaining connected to the common venng system

properly vents when tested as outlined above, return doors, windows, exhaust fans, replace dampers, and

any other gas-burning appliance to their previous condion of use.”

7. Any improper operaon of the common venng system should be corrected so the installaon conforms with the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane Installaon Code, CAN/CSA B149.1. When resizing any poron of the common venng system, the common venng system should be resized to approach the minimum size as determined using the appropriate tables in Chapter 13 of the Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane Installaon Code, CAN/CSA B149.1.

If a boiler is removed from a common vent system, the common vent system is likely to be too large for proper venng of the remaining appliances connected to it.

Remove a Boiler From a Common Vent System