Rheem RCBH199DVLN Prestige High Efficiency Combi Boiler 9.9 User Manual

NOTE TO CONSUMER: DO NOT DESTROY THIS MANUAL. PLEASE READ CAREFULLY AND KEEP ALL INSTRUCTIONS

FOR FUTURE REFERENCE.

CONDENSING

TANKLESS

COMBI BOILER

Use and Care Manual

User’s Information

Installation

Start-Up

Maintenance

Parts

100K Heating (180K DHW) Btu/h Models

120K Heating (199K DHW) Btu/h Models

WARNING

The surfaces of these products contacted by consumable water contain less than 0.25% lead by weight, as

required by the Safe Drinking Water Act, Section 1417.

WARNING: If the information in these instructions 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 instructions.

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

• Installation and service must be provided by a qualied installer, service agency or the gas supplier.

Improper installation, adjustment, alteration, service, or maintenance can cause injury, property damage, or death. Refer to this manual.

Installation and service must be performed by a qualied installer, service agency, or gas supplier.

: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

AP20484

WARNING: If you do not follow these instructions exactly, a fire or explosion

may result, causing property damage, personal injury or death.

A.This appliance does not have a pilot. It is equipped

with an ignition device automatically lights the

burner. Do not try to light the burner by hand.

B. BEFORE OPERATING smells 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

 If you cannot reach your gas supplier, call the

fire department.

C. Use only your hand to turn the gas control knob.

Never use tools. If the handle 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.

OPERAT ING INSTRUCTIONS

1.STOP! Read the safety information above.

2. Set the thermostat to lowest setting.

3. Turn off all electric power to the appliance.

4. This appliance is equipped with an ignition device

which automatically lights the burner. Do not try to

light the burner by hand.

5. Remove front cover.

6. Turn gas shutoff valve to “off”. Handle will be

across the piping, do not force.

7. Wait five (5) minutes to clear out any gas. If you

then smell gas, STOP! Follow “B” in the safety

information above on this label. If you don’t smell

gas, go to next step.

8. Turn gas shutoff valve to “on”. Handle will be in

line with piping.

9. Install front cover.

10. Turn on all electric power to appliance.

11. Set thermostat to desired setting.

12. If the appliance will not operate, follow the

instructions “To Turn Off Gas To Appliance” and call

your service technician or gas supplier.

ihii li

TO TURN OFF GAS TO APPLIANCE

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the appliance if service

is to be performed.

3. Remove front cover.

4. Turn gas shutoff valve “off”. Handle will be across

the piping. Do not force.

5. Install front cover.

FOR YOUR SAFETY READ BEFORE OPERATING

device which automatically lights the

smell

heavier than

electrical switch

electrical power to the appliance.

“OFF” position. Handle

“OFF” position. Handle will

be across the piping. Do not force.

“ON” position. Handle

will be across the piping, do not force.

will be in line with piping.

electrical power to the appliance.

electrical power to the appliance if

service is to be performed.

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk

levels, or to important product information.

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury .

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property

damage.

NOTICE

NOTICE is used to address practices not related to personal injury.

SAFETY INSTRUCTIONS

SAFETY INSTRUCTIONS (or equivalent) signs indicate specific safety related instructions or procedures.

NOTE: Contains additional information important to a procedure.

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk

levels, or to important product information.

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury .

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property

damage.

NOTICE

NOTICE is used to address practices not related to personal injury.

SAFETY INSTRUCTIONS

SAFETY INSTRUCTIONS (or equivalent) signs indicate specific safety related instructions or procedures.

NOTE: Contains additional information important to a procedure.

Installation warnings :

Do not install appliance where ammable products will be stored or used

unless the main burner is at least 18" above the oor. This will reduce, but

not eliminate the risk of vapors being ignited by the main burner.

Read and follow appliance warnings and instructions, if owners manual is

missing, contact the retailer or manufacturer.

Water Temperature over 125°F can cause

severe burns instantly or death from scalds.

Children, disabled and

elderly are at highest risk of being scalded.

See instruction manual before setting the DHW

temperature at the Combi Boiler.

Feel water before bathing or showering.

Temperature limiting valves are available, see

manual.

Vapors

FOREWORD

This manual is intended to be used in conjunction with other literature provided with the appliance. This includes all related control information. It is

important that this manual, all other documents included with this system, and additional publications including the National Fuel Gas Code, ANSI

Z223.1-Latest Edition, be reviewed in their entirety before beginning any work.

Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility companies

which pertain to this type of water heating equipment.

Authority Having Jurisdiction (AHJ) – The Authority Having Jurisdiction may be a federal, state, local government, or individual such as a re

chief, re marshal, chief of a re prevention bureau, labor department or health department, building ofcial or electrical inspector, or others having

statutory authority. In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding

ofcer or departmental ofcial may be the AHJ.

NOTE: Rheem reserves the right to modify product technical specications and components without prior notice.

FOR THE INSTALLER

This appliance must be installed by qualied and licensed personnel. The installer should be guided by the instructions furnished with the appliance,

and with local codes and utility company requirements. In the absence of local codes, preference should be given to the National Fuel Gas Code,

ANSI Z223.1-Latest Edition.

INSTALLATIONS MUST COMPLY WITH:

Local, state, provincial, and national codes, laws, regulations and ordinances.

The latest version of the National Fuel Gas Code, ANSI Z223.1, from American Gas Association Laboratories, 8501 East Pleasant Valley Road,

Cleveland, OH 44131.

In Canada – CAN/CSA - B149.1 (latest version) from Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario,

Canada L4W 5N6

The latest version of the National Electrical Code, NFPA No. 70.

This manual must only be used by a qualied heating appliance installer/service technician. Read all instructions in this manual before installing.

Perform steps in the order given. Failure to comply could result in substantial property damage, severe personal injury, or death.

DANGER

WARNING

The hydronic supply and return connections of these products are for installation in closed loop systems ONLY! Use of this product in

any manner other than described in this manual may result in premature product failure, substantial property damage, severe personal injury, or

death. Damage or failure of this product (or the system in which it is installed) due to unauthorized use IS NOT COVERED BY WARRANTY.

NOTE:The gas manifold and controls met safe lighting and other performance criteria when the appliance underwent tests

specied in ANSI Z21.13 – latest edition.

boiler.

TABLE OF CONTENTS

PART 1 – ITEMS SHIPPED WITH THE APPLIANCE............................................................................................7

PART 2 – SAFETY REGULATIONS.............................................................................................................................8

A. OPERATION AND INSTALLATION WARNINGS..................................................................................................8

B. IMPROPER COMBUSTION.................................................................................................................................9

C. GAS......................................................................................................................................................................9

D. WHEN SERVICING THE APPLIANCE.................................................................................................................9

E. WATER CHEMISTRY..........................................................................................................................................10

F. FREEZE PROTECTION......................................................................................................................................10

G. SCALDING.........................................................................................................................................................10

H. HIGH ELEVATION INSTALLATIONS ................................................................................................................10

PART 3 – TECHNICAL SPECIFICATIONS..............................................................................................................11

PART 4 – PREPARE APPLIANCE LOCATION......................................................................................................13

A. UNCRATING THE APPLIANCE..........................................................................................................................13

B. BEFORE LOCATING THE APPLIANCE.............................................................................................................14

C. LEVELING..........................................................................................................................................................15

D. CLEARANCES FOR SERVICE ACCESS...........................................................................................................15

E. RESIDENTIAL GARAGE AND CLOSET INSTALLATIONS................................................................................16

EXHAUST VENT AND INTAKE PIP

.............................................

.................

..........................

......................16

G. CARBON MONOXIDE DETECTORS................................................................................................................16

H. PREVENT COMBUSTION AIR CONTAMINATION............................................................................................17

I. REMOVING AN APPLIANCE FROM A COMMON VENT SYSTEM.....................................................................17

J. WALL-MOUNTING THE APPLIANCE.................................................................................................................18

PART 5 – VENTING.........................................................................................................................................................19

A. INTAKE PIPE AND EXHAUST VENT GUIDELINES...........................................................................................19

B. APPROVED VENT MATERIALS.........................................................................................................................22

C. ALLOWED COMBINED VENT LENGTHS..........................................................................................................22

D. TIGHTENING APPLIANCE COLLAR TO EXHAUST VENT AND INTAKE PIPE...............................................23

E. VENT TERMINATION.........................................................................................................................................24

1. Direct Vent, Two Pipe Roof and Sidewall Vent Terminations..........................................................................24

2. Direct Vent, Optional Horizontal and Vertical Vent Kits................................................................................. 25

3. Screen Installation.........................................................................................................................

.....

...........25

4. Power Venting, Indoor Combustion Air Installation in Conned or Unconned Space....................................26

PART 6 – INSTALL THE CONDENSATE DRAIN...................................................................................................28

PART 7 – GAS PIPING...................................................................................................................................................29

A. GAS PIPE SIZING TABLES ...............................................................................................................................29

1. Gas Pipe Sizing..............................................................................................................................................29

Natural Gas Pipe Sizing.................................................................................................................................29

LP (Liquid Propane) Gas Pipe Sizing.............................................................................................................29

B. GAS CONNECTION REQUIREMENTS.............................................................................................................30

PART 8 – WATER PIPING.............................................................................................................................................32

A. GENERAL PLUMBING CONNECTION GUIDELINES........................................................................................32

B. DHW PIPING......................................................................................................................................................32

C. CENTRAL HEATING PIPING SYSTEM WATER PIPING METHODS................................................................34

D. CH AND DHW PRESSURE RELIEF VALVE ......................................................................................................38

PART 9 – CONNECT ELECTRICAL POWER / INITIAL STARTUP.................................................................38

A. GENERAL OPERATING CONDITIONS..............................................................................................................39

B. WIRING INFORMATION................................................................................................................

...............

.....39

C. DIP SWITCHES..................................................................................................................................................39

PART 10 – OPERATING SYSTEM INSTRUCTIONS............................................................................................45

A. CONTROL PANEL..............................................................................................................................................45

B. LCD DISPLAY DESCRIPTIONS.........................................................................................................................46

C. START-UP SEQUENCE.....................................................................................................................................46

D. CHANGING THE DHW SET-POINT...................................................................................................................47

E. SETTING FOR DHW PREHEAT ACTIVATION...................................................................................................48

F. SETTING FOR DHW PREHEAT TIMER.............................................................................................................48

G. STATUS DISPLAY MODE................................................................................................................................. 49

H. CHANGE THE CH SET-POINT..........................................................................................................................49

I. INSTALLER MODE..............................................................................................................................................50

J. ERROR MODE...................................................................................................................................................53

K. OUTDOOR TEMPERATURE MODE (OPTIONAL)............................................................................................55

L. 0~10 VDC INPUT................................................................................................................................................55

PART 11 – START-UP PREPARATION ....................................................................................................................56

A. CHECK / CONTROL WATER CHEMISTRY .......................................................................................................56

. B. GLYCOL ANTIFREEZE SOLUTIONS.................................................................................................................57

C. CHECK FOR GAS LEAKS .................................................................................................................................57

D. FILL AND TEST WATER SYSTEM.....................................................................................................................58

E. PURGE AIR FROM CH SYSTEM ......................................................................................................................58

F. PURGE AIR FROM DHW SYSTEM ...................................................................................................................59

G. CHECK THERMOSTAT CIRCUIT(S).................................................................................................................59

H. CONDENSATE REMOVAL ................................................................................................................................60

I. FINAL CHECKS BEFORE STARTING APPLIANCE ...........................................................................................60

J. ADJUSTING GAS PRESSURE AT THE APPLIANCE ........................................................................................60

K. SETTING AND VERIFYING THE COMBUSTION SETTING .............................................................................61

PART 12 – INSTALLATION AND START-UP CHECKLIST ...............................................................................62

PART 13 – TROUBLESHOOTING .............................................................................................................................64

PART 14 – ANNUAL MAINTENANCE PROCEDURES ......................................................................................65

CASE PART ...........................................................................................................................................................69

HEAT EXCHANGER PART.....................................................................................................................................71

FAN MOTOR PART ...............................................................................................................................................73

START-UP REPORT ..............................................................................................................................................75

MAINTENANCE REPORT .....................................................................................................................................76

MAINTENANCE NOTES .......................................................................................................................................77

CUSTOMER INSTALLATION RECORD FORM.....................................................................................................78

PART 1 – ITEMS SHIPPED WITH THE APPLIANCE

ITEM DESCRIPTION QUANTITY

Combi Appliance

Use and Care Manual

CH Pressure Relief Valve

(CH Line ¾" 30 psi)

Vent Screens (3") 2 Screens

Outdoor Temperature Sensor

Emergency Kit

Anchors and Wall Mounting Bracket

PART 2 –SAFETY REGULATIONS

ITEM DESCRIPTION PART NUMBER

Vent Screens (2" Mesh)

2 Screens

Table 1 – Items Included with the Appliance

▪ A. OPERATION AND INSTALLATION WARNINGS

To save time and money, review the following initial diagnostic steps before calling for service.

Vapors from ammable liquids will explode and can cause a re, resulting in personal injury or death. The appliance has a burner that can come

on at any time and ignite vapors. DO NOT use or store ammable liquids around the appliance.

Improper venting can cause a build-up of carbon monoxide. Breathing carbon monoxide can result in brain damage or death. DO NOT operate

the appliance unless it is properly vented to the outside and has an adequate fresh air supply for safe operation. Inspect the exterior exhaust gas

outlet port and fresh air inlet port on a regular basis to ensure they are functioning properly.

A concentration of carbon monoxide as small as .04% (400 parts per million) in the air can be fatal. When making high re or low re adjustments,

CO levels must be monitored using a ue gas analyzer such that a CO level of no more than 400 ppm is exceeded at any time during operation.

Adjusting the “low re offset" on the gas valve in even small increments can result in a signicant increase in CO concentration. To avoid serious

injury or death, DO NOT make any adjustments to the gas valve without monitoring the exhaust gases with a fully functional and calibrated ue

gas analyzer.

Failure to follow these statements will result in property damage, severe personal injury, or death.

DANGER

WARNING

This appliance must be installed by a licensed plumber, licensed gas tter, and/or professional service technician. Improper installation and/or

operation can cause a potentially hazardous situation, which, if not avoided, could result in serious injury or death, and will void the warranty.

Rheem Manufacturing Company cannot anticipate every circumstance that might involve a potential hazard. Each installation has its own

specialized characteristics, requirements, and possible hazards. Therefore, all possible incidents are not included in these warnings. Proper and

safe installation, operation, and service are the responsibility of the professional service technician.

Proper care of the appliance is the user’s responsibility. Ensure the user carefully reads and understands the User’s Information Manual before

operating and maintaining the appliance.

Make sure the user knows the location of the gas shut-off valve and how to operate it. Immediately close the gas shut-off valve if the appliance

is subjected to re, overheating, ood, physical damage, or any other damaging condition that might affect the operation of the unit. Have the

appliance checked by a qualied technician before resuming operation.

Do not power up the unit unless the gas and water supply valves are fully opened. Make sure the fresh air intake port and exhaust gas port are

open and functional.

No one but a professional service technician should attempt to install, service, or repair this appliance. There are no serviceable parts which can

be changed by the user / owner. User / Owner: Contact the original professional service technician if theappliance needs repair or maintenance. If

the original technician is unavailable, ask your gas supplier for a list of qualied service providers.

Keep the area around the appliance clean and free of all materials that can burn. DO NOT store or place gasoline, oils, spray paint, or other

ammable products near the appliance.

DO NOT use spray paint, hair spray, or any other ammable spray near the appliance or near the exterior fresh air intake port. DO NOT place any

items in or around the exterior exhaust gas outlet port and/or fresh air inlet port that could restrict or block the ow in or out of the vent system.

DO NOT store or place newspapers, laundry, or other combustible items near the appliance or the exterior exhaust gas outlet and/or fresh air inlet

port.

The owner should inspect the system monthly for damage, water stains, signs of rust, corrosion, and exhaust vent and air intake blockage. If

inspection of the unit shows signs of damage, the appliance should be shut off until the problem is repaired by a qualied technician.

WARNING

CAUTION

NOTICE

▪ B. IMPROPER COMBUSTION

▪ C. GAS

Should overheating occur or gas supply fails to shut off, do not turn off or disconnect electrical supply to the water heating appliance.

Instead, shut off the gas supply at a location external to the appliance.

▪ D. WHEN SERVICING THE APPLIANCE

ㆍ

To avoid electric shock, disconnect electrical supply before performing maintenance.

ㆍ

To avoid severe burns, allow appliance to cool.

ㆍ

Do not use petroleum-based cleaning or sealing compounds in an appliance system. Gaskets and seals in the system may be damaged, possibly

resulting in substantial property damage.

ㆍ

Always verify proper operation after servicing the appliance.

After installation, all appliance safety devices should be tested.

DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN SUBMERGED IN WATER. Immediately call a qualied service technician. The

appliance MUST BE replaced if it has been submerged. Attempting to operate an appliance that has been submerged could create numerous

harmful conditions, such as a potential gas leakage causing a re and/or explosion, or the release of mold, bacteria, or other harmful particulates

into the air. Operating a previously submerged appliance could result in property damage, severe personal injury, or death.

NOTE: Appliance damage due to ood or submersion is considered an Act of God, and IS NOT covered under product warranty.

Do not obstruct the ow of combustion and ventilating air. Adequate air must be provided for safe operation. Failure to keep the exhaust vent and

intake pipe clear of ice, snow, or other debris could result in property damage, serious personal injury, or death.

Due to the low water content of the appliance, improper sizing of the appliance with regard to heating system load will result in excessive cycling

and accelerated component failure. Rheem DOES NOT warrant failures caused by improperly sized appliance applications. DO NOT oversize the

appliance to the system. Modular appliance installations greatly reduce the likelihood of appliance oversizing.

Be sure to disconnect electrical power before opening appliance cabinet or performing service. Label all wires while performing service to ensure

proper re-wiring of the appliance. Wiring errors can cause improper or dangerous operation. Failure to do so could result in an electrical shock,

improper appliance operation, property damage, serious personal injury, or death.

Any claims for damage or shortage in shipment must be led immediately against the transportation company by the consignee.

This appliance is certied for indoor installations only. The appliance consists of gas ignition system components which must be protected from

water (dripping, spraying, etc.) during operation and service. Carefully consider installation location and the placement of critical components

(circulators, condensate neutralizers, etc.) before installing the appliance.

This appliance provides a overheat shutdown limit. In the event the appliance water exceeds the set point of the control limit, the cutoff will trip

and the appliance will shut down. Certain local codes require additional temperature limits. In addition, certain types of systems may operate at

temperatures below the minimum set point of the limit provided with the appliance. Contact a qualied service technician for additional overheat

controls.

DO NOT allow children to operate this unit. DO NOT use this unit if it does not appear to be operating correctly. A qualied technician should

service and inspect the appliance annually.

The appliance DHW temperature is factory set to 125°F (51°C). To avoid scalding, always check the temperature of the hot water before bathing,

showering, washing, etc. DO NOT adjust the water temperature while the appliance is being used by other persons.

If the appliance is exposed to the following, do not operate until all corrective steps have been made by a qualied service technician:

1. FIRE

2. DAMAGE

3. WATER

This appliance is equipped with a three prong 120 VAC plug. It should only be plugged directly into a properly grounded three prong 120 VAC

receptacle. DO NOT remove the ground plug from the plug.

DO NOT alter or modify the appliance or appliance controls. This can be dangerous and WILL VOID the warranty.

Failure to follow these statements could result in property damage, severe personal injury, or death.

NOTE: When inquiring about service or troubleshooting, reference the model and serial numbers from the appliance rating label.

▪ E. WATER CHEMISTRY

▪ F. FREEZE PROTECTION

▪ G. SCALDING

The water must be potable, free of corrosive chemicals, sand, dirt, and other contaminates. It is up to the installer to ensure the water does not

contain corrosive chemicals or elements that can damage the heat exchanger. Potable water is dened as drinkable water supplied from utility or

well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3) as shown in the table below. If the water contains

contaminants higher than outlined by the EPA, water treatment is recommended and additional, more frequent maintenance may be required.

If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed

professional.

CAUTION

Chemical imbalance of the water supply may affect efciency and cause severe damage to the appliance and associated equipment. Water quality

must be professionally analyzed to determine whether it is necessary to treat the water. Various solutions are available to adjust water quality.

Adverse water quality will affect the reliability of the system. In addition, operating temperatures above 135°F will accelerate the build-up of lime

scale and possibly shorten appliance service life. Failure of an appliance due to lime scale build-up, low pH, or other chemical imbalance IS NOT

covered by the warranty.

Consider appliance piping and installation when determining appliance location.

Contaminant Maximum Allowable Level Contaminant Maximum Allowable Level

Total Hardness

(Residential Use - Below 140°F

water temperature)

200 mg/l

(12 grains/gallon)

Manganese 0.05 mg/l or PPM

Total Hardness

(Commercial Use - 140°F and above

water temperature)

120 mg/l

(7 grains/gallon)

pH 6.5-8.5

Aluminum 0.05 to 0.2 mg/l or PPM Sulfate 205 mg/l or PPM

Chloride 100 mg/l or PPM Total Dissolved Solids (TDS) 500 mg/l or PPM

Copper 1 mg/l or PPM Zinc 5 mg/l or PPM

Iron 0.3 mg/l or PPM Dissolved Carbon Dioxide (CO

) 15 mg/l or PPM

Table 2 – Water Chemistry Specications

Table 3 – Time and Temperature Relationship in Scalds

APPROXIMATE TIME / TEMPERATURE RELATIONSHIPS IN SCALDS

120°F More than 5 minutes

125°F 1 ½ to 2 minutes

130°F About 30 seconds

135°F About 10 seconds

140°F Less than 5 seconds

145°F Less than 3 seconds

150°F About 1 ½ seconds

155°F About 1 second

NOTE: Damages resulting from incorrect installation or from use of products not approved by Rheem ARE

NOT covered by warranty.

This heater can deliver scalding water. Be careful whenever using hot water to avoid scalding injury. Certain appliances, such as dishwashers and automatic

clothes washers may require increased water temperature. By setting the thermostat on this heater to obtain the increased water temperature required by

these appliances, you may create the potential for scald injury.

To protect against injury, you should install a mixing valve in the water system. This valve will reduce point of discharge temperature by mixing cold and hot

water in branch supply lines. Such valves are available from your local plumbing supplier.

Table 3 details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water

temperature for your applications.

Water Temperature over 125°F can cause

severe burns instantly or death from scalds.

Children, disabled and elderly are at highest risk of

being scalded.

See instruction manual before setting the DHW

temperature at the Combi Boiler.

Feel water before bathing or showering.

Temperature limiting valves are available, see

manual.

WARNING

▪ H. HIGH ELEVATION INSTALLATIONS

The water heater is certied for installations up to 2000 ft. (610 m) above sea level. The input rating of this water heater is based on sea level

operation. At higher elevations, the actual input rate may be lower than the value listed on the rating label due to the derating of Natural Gas and

LP Gas.

For installations above 2000 ft. (610 m) elevation, contact a qualied service technician to make the proper altitude adjustments.

To adjust parameters for high elevation, see INSTALLER MODE, this manual.

Table 4 – Technical Specications

PART 3 –TECHNICAL SPECIFICATIONS

Model

120K Heating

(199K DHW) Btu/hr

100K Heating

(180K DHW) Btu/hr

Gas Input Rate

(DHW mode)

MAX 199,000 Btu/h (58.3 kW/h) 180,000 Btu/h (52.7 kW/h)

MIN 18,000 Btu/h (5.2 kW/h) 18,000 Btu/h (5.2 kW/h)

DHW Capacity

35°F Rise 9.9 GPM (37.4 LPM) 9.0 GPM (34 LPM)

45°F Rise 7.7 GPM (29.1 LPM) 7.0 GPM (26.4 LPM)

77°F Rise 4.5 GPM (17 LPM) 4.1 GPM (15.5 LPM)

Gas Input Rate

(Heating mode)

MAX 120,000 Btu/h (35.1 kW/h) 100,000 Btu/h (29.3 kW/h)

MIN 18,000 Btu/h (5.2 kW/h) 18,000 Btu/h (5.2 kW/h)

Installation Indoor Wall Hung

Flue System Sealed Combustion Direct Vent, Single Vent

Max Vent Run 2″(50ft) / 3″(100ft) Schedule 40 PVC, CPVC, PP

Orice Size

NG (Gas / Needle) 0.342″(8.7mm) / 0.354″(9.0mm)

LP (Gas / Needle) 0.259″(6.6mm) / 0.259″(6.6mm)

Gas Supply Pressure

NG 3.5" WC to 10.5" WC (0.87 kPa to 2.62 kPa)

LP 8.0" WC to 14.0" WC (1.99 kPa to 3.49 kPa)

Manifold Pressure

Gas Type NG LP NG LP

Low Fire 2″/ 3″ VENT

-0.04" WC

(-10 Pa)

-0.04" WC

(-10 Pa)

-0.04" WC

(-10 Pa)

-0.04" WC

(-10 Pa)

High Fire 2″/ 3″ VENT

-0.32" WC

(-80 Pa)

-0.28" WC

(-70 Pa)

-0.28" WC

(-70 Pa)

-0.26" WC

(-65 Pa)

Power Supply

Main Supply 120VAC 60Hz

Maximum

Power Consumption

187W(71W+116W Pump) 180W (64W + 116W Pump)

120VAC Max 2A External Pump (Optional)

Ignition System Direct Electronic Ignition / Automatic Flame Sensing

Burner System Premixed Metal Fiber Burner

Gas Valve System Air Ratio Valve

Minimum Flow Activation Flow 0.5 GPM (2 LPM)

Internal Pipe Material STS 304, Copper Tubing

Dimensions W17.3″ – H28.7″ – D14.8″ (W440mm - H730mm - D375mm)

Weight 90lb (40kg)

Water Holding Capacity Under 2 Gallons (7.5 Liters)

Control Panel /Circuit Board

P-960C / NGTX-9600C

Water Pressure

MAX DHW 150 psi (10.5 kgf/cm

) / Heating 30 psi (2.1 kgf/cm

)

MIN DHW 15 psi (1 kgf/cm

) / Heating 12 psi (0.8 kgf/cm

)

Materials

Case Cold Rolled Carbon Steel

Heat Exchanger

Primary Heat Exchanger : STS 304

Secondary Heat Exchanger : STS 304

Safety Devices

Flame Sensor, High Limit Switch ,

Gas Leakage Detector

Water Leakage Detector

Exhaust Thermistor, Pressure Sensor

Heating Supply Thermistor

DESCRIPTION DIAMETER (ALL NPTM)

ⓐ Pressure Relief Valve for Heating 3/4"

ⓑ Exhaust Vent Connection 3"

ⓓ CH Supply Connection 1"

ⓔ CH Return Connection 1"

ⓕ DHW Outlet Connection 3/4"

ⓖ DHW Inlet Connection 3/4"

ⓗ Auto Feeder Inlet Connection 1/2"

ⓘ Gas Connection 3/4"

ⓙ Condensate Drain Connection 1/2"

Figure 1 – Specications and Dimensions

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Table 5 – Adapter Specications

NO Name of Component NO Name of Component NO Name of Component

1 Pressure Relief Valve 15 3-Way Valve 29 Heating Return Thermistor

2 Exhaust 16 DHW Plate Heat Exchanger 30 Water Flow Sensor

3 Air Vent 17 DHW Thermistor 31 Flow Control Valve

4 Igniter 18 DHW Connection 32 Air Pressure Switch

5 Exhaust Thermistor 19 Heating Supply Connection 33 Pressure Sensor

6 Ignition Rod 20 Water Leakage Detector 34 Secondary Heat Exchanger

7 Burner Limit Switch 21 AC 24V Transformer 35 Gas Valve

8 High Limit Switch 22 Auto Feeder Connection 36 Flame Sensor

9 Heating Supply Thermistor 23 Condensate Trap 37 Burner

10 Primary Heat Exchanger 24 Heating Return Connection (Filter) 38 AGM (Air Gas Mixer)

11 Heating Outlet Pipe 25 DHW Cold Water Connection 39 Fan Motor

12 Manual Power Switch 26 Gas Connection 40 Air Inlet Filter

13 Control Panel 27 Circulation Pump 41 Air Intake

14 Circuit Board 28 DHW Cold Water Thermistor

Figure 2 – Model Components

Table 6 – Component List

IMPORTANT

CAUTION

▪ A. UNCRATING THE APPLIANCE

UNCRATING APPLIANCE – Any claims for damage or shortage in shipment must be led immediately against the transportation company by the

consignee.

Cold weather handling – If appliance has been stored in a very cold location (below 0°F) before installation, handle with care until the plastic

components come to room temperature.

PART 4 –PREPARE APPLIANCE LOCATION

Remove all sides of the shipping crate to allow the appliance to be lifted into its installation location.

2. Page 13

WARNING

CAUTION

▪ B. BEFORE LOCATING THE APPLIANCE

Incorrect ambient conditions can lead to damage to the heating system and put safe operation at risk. Ensure that the appliance installation

location adheres to the information included in this manual. Failure to do so could result in property damage, serious personal injury, or death.

This appliance is certied for indoor installations only. Do not install the appliance outdoors. Failure to install this appliance indoors could result in

substantial property damage, severe personal injury, or death.

Failure to keep appliance area clear and free of combustible materials, liquids, and vapors can result in substantial property damage, severe

personal injury, or death.

This appliance must be installed as described in this manual: upright, with the vent adapters in the vertical position. DO NOT attempt to install this

appliance in any other orientation. Doing so will result in improper appliance operation and property damage, and could result in serious personal

injury or death.

Carefully consider installation when determining appliance location. Please read the entire manual before attempting installation. Failure to

properly take factors such as appliance venting, piping, condensate removal, and wiring into account before installation could result in wasted

time, money, and possible property damage and personal injury.

Failure of appliance or components due to incorrect operating conditions IS NOT covered by product warranty.

The service life of the appliance’s exposed metallic surfaces, such as the casing, as well as internal surfaces, such as the heat exchanger, are

directly inuenced by proximity to damp and salty marine environments. In such areas, higher concentration levels of chlorides from sea spray

coupled with relative humidity can lead to degradation of the heat exchanger and other appliance components. In these environments, appliances

must not be installation using direct vent systems which draw outdoor air for combustion. Such appliances must be installed using room air for

combustion. Indoor air will have a much lower relative humidity and, hence, potential corrosion will be minimized.

Locate the appliance where any leakage from the relief valve, related piping, tank, or connections will not result in damage to surrounding areas

or lower oors of the building. The appliance should be located near a oor drain. RHEEM WILL NOT be held liable for leakage damages.

To conserve water and energy, insulate all water piping, especially the hot and recirculation water lines.

1. Installation Area (Mechanical Room) Operating Conditions

ㆍ

Ensure ambient temperatures are higher than 32°F/0°C and lower than 104°F/40°C.

ㆍ

Prevent the air from becoming contaminated by the products, places, and conditions listed in this manual.

ㆍ

Avoid continuously high levels of humidity

ㆍ

Never close existing ventilation openings

2. Check for nearby connections to:

ㆍ

System water piping

ㆍ

Venting connections

ㆍ

Gas supply piping

ㆍ

Electrical power

ㆍ

Condensate drain

3. Check area around appliance. Remove any combustible materials, gasoline, and other ammable liquids.

4. Gas control system components must be protected from dripping water during operation and service.

5. If the appliance is to replace an existing appliance, check for and correct any existing system problems, such as:

ㆍ

System leaks

ㆍ

Location that could cause the system and appliance to freeze and leak.

ㆍ

Incorrectly-sized expansion tank

WARNING

CAUTION

Space must be provided with combustion/ventilation air openings correctly

sized for all other appliances located in the same space as the appliance.

The appliance cover must be securely fastened to prevent it from drawing

air from the appliance room. This is particularly important if the appliance

is in a room with other appliances. Failure to comply with the above could

result in substantial property damage, severe personal injury, or death.

Do not connect the appliance to any heating systems or components that have been previously used for non-potable applications.

Do not introduce toxic chemicals, such as antifreeze or appliance treatments, into the appliance or any piping meant for potable water purposes.

Ensure that all piping and components connected to the appliance are suitable for potable water applications.

Do not use this appliance only for space heating applications.

Failure to follow these instructions could result in property damage, personal injury, or death.

In order for the condensate to properly ow out of the collection system, the appliance must be installed level. Failure to ensure the appliance is

installed level will result in improper appliance operation.

Always take future maintenance into consideration when locating the appliance. If the appliance is located in an installation location with limited

clearances, it may be necessary to remove the appliance from the space to perform maintenance. Failure to consider maintenance when

determining installation location could result in property damage.

6. Clean and ush system when reinstalling an appliance.

NOTE: When installing in a zero clearance location, it may not be possible to read or view some product labeling. It is recommended to make note

of the appliance model and serial number.

NOTE: A combustible door or removable panel is acceptable front

clearance. A 3" minimum clearance must be provided from the appliance

front cover to the removable panel or combustible door.

MINIMUM CLEARANCES FROM COMBUSTIBLE MATERIALS

ㆍ

Hot water pipes – at least 1"(2.5cm) from combustible materials.

ㆍ

Exhaust vent pipe – at least 1"(2.5cm) from combustible materials

▪ C. LEVELING

To save time and money, review the following initial diagnostic steps before calling for service.

▪ D. CLEARANCES FOR SERVICE ACCESS

See Figure 3 and Table 7 for recommended service clearances. If these minimum clearances are not provided, it may not be possible to service

the appliance without removing it from the space.

Figure 3 – Minimum Service Clearances

MINIMUM CLEARANCES

Installation Clearances

from Non-Combustibles /

Combustibles

Recommended Service and Proper Operation

Clearances

Top 18 in. (45.7 cm)

Back 0 in. (0 cm)

Bottom 12 in. (30.45 cm)

Front 24 in. (60.9 cm)

Right Side

3 in. (7.6 cm)

Left Side

Table 7 – Minimum Installation and Service Clearances

WARNING

CAUTION

▪ E. RESIDENTIAL GARAGE AND CLOSET INSTALLATIONS

▪ F. EXHAUST VENT AND INTAKE PIPE

▪ G. CARBON MONOXIDE DETECTORS

The space must be provided with correctly sized combustion/ventilation air openings for all other appliances located in the space with the

appliance. For power venting installations using room air for combustion, refer to the venting section, this manual, for descriptions of conned and

unconned spaces. Do not install the appliance in an attic. Failure to comply with these warnings could result in substantial property damage,

severe personal injury, or death.

Vents must be properly supported. The appliance exhaust and intake connections are not designed to carry heavy weight. Vent support brackets

must be within 1’ of the appliance and the balance at 4’ intervals. Venting must be readily accessible for visual inspection for the rst 3’ from the

appliance.

Failure to comply with these requirements could result in product damage, severe personal injury, or death.

Check with your local Authority Having Jurisdiction for requirements when installing appliance in a garage or closet. Please read the entire

manual before attempting installation. Failure to properly take factors such as venting, piping, condensate removal, and wiring into account before

installation could result in wasted time, money, and possible property damage and personal injury.

PRECAUTIONS

If the appliance is located in a residential garage, it should be installed per the latest edition of the National Fuel Gas Code, ANSI Z223.1, and

CAN/CSA B149 Installation Code in Canada.

ㆍ

Mount the bottom of the appliance a minimum of 18" above the oor of the garage, to ensure the burner and ignition devices are well off the oor.

ㆍ

Locate or protect the appliance so it cannot be damaged by a moving vehicle.

In the Commonwealth of Massachusetts and As Required by State and Local Codes

Installation of Carbon Monoxide Detectors: At the time of installation or replacement of the vented gas fueled appliance, the installing plumber or

gas tter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the oor level where the gas

appliance is installed, unless the appliance is located in a detached, uninhabitable structure separate from the dwelling, building, or structure used in

whole or in part for residential purposes.

In addition, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is

installed on each additional level of the dwelling, building, or structure served by the vented gas appliance. It shall be the responsibility of the

property owner to secure the service of qualied licensed professionals for the installation of hard wired carbon monoxide detectors.

a. In the event that the vented gas fueled appliance is installed in a crawl space or attic, the hard wired carbon monoxide detector with alarm and

battery back-up shall be installed on the next adjacent oor level.

b. In the event that these requirements cannot be met at the time of completion of installation, the owner shall have a period of thirty (30) days to

comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with

an alarm shall be installed.

Approved Carbon Monoxide Detectors: Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA

70 and be ANSI/UL 2034 listed and CSA certied.

NOTE: To prevent combustion air contamination, see Table 9 in this section when considering exhaust vent and intake pipe termination.

The appliance is rated ANSI Z21.13 Category IV (pressurized vent, likely to form condensate in the vent), and requires a special vent system

designed for pressurized venting.

Exhaust vent and intakepipe may be vented vertically through the roof or out a side wall. Venting methods are detailed in the Venting Section. Do

not attempt installation using any other means. Be sure the appliance exhaust vent and intake can be routed through the building and properly

terminated. Exhaust vent and intake piping lengths, routing, and termination method must comply with methods and limits given in the venting

section.

WARNING

▪ H. PREVENT COMBUSTION AIR CONTAMINATION

▪ I. REMOVING AN APPLIANCE FROM A COMMON VENT SYSTEM

Breathing Hazard – Carbon Monoxide Gas

Breathing carbon monoxide can cause brain damage or death. Always read and understand

instruction manual.

Ensure that the intake air will not contain any of the contaminants below. For example, do not pipe intake near a swimming pool. Avoid areas

subject to exhaust fumes from laundry facilities. These areas always contain contaminants. Contaminated air will damage the appliance, resulting

in possible substantial property damage, severe personal injury, or death.

Install intake piping for the appliance as described in the Venting section. Do not terminate exhaust in locations that can allow contamination of

intake air.

NOTE: DAMAGE TO THE APPLIANCE CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY WARRANTY.

(Refer to the limited warranty for complete terms and conditions).

PRODUCTS TO AVOID AREAS LIKELY TO HAVE CONTAMINANTS

Spray cans containing uorocarbons Dry cleaning/laundry areas and establishments

Permanent wave solutions Swimming pools

Chlorinated waxes/cleaners Metal fabrication plants

Chlorine-based swimming pool chemicals Beauty shops

Calcium chloride used for thawing Refrigeration repair shops

Sodium chloride used for water softening Photo processing plants

Refrigerant leaks Auto body shops

Paint or varnish removers Plastic manufacturing plants

Hydrochloric or Muriatic acid Furniture renishing areas and establishments

Cements and glues New building construction

Antistatic fabric softeners used in clothes dryers Remodeling areas

Chlorine-type bleaches, laundry detergents, and cleaning solvents Garages and workshops

Adhesives used to fasten building products

Table 8 – Products and Areas Likely to Have Contaminants

Do not install the appliance into a common vent with any other appliance. This will cause ue gas spillage or appliance malfunction, resulting in

possible substantial property damage, severe personal injury, or death.

Failure to follow all instructions can result in ue gas spillage and carbon monoxide emissions, causing severe personal injury or death.

ㆍ

Do not operate heater if ood damaged.

ㆍ

Install vent system in accordance with local codes and manufacturers installation instructions.

ㆍ

Do not obstruct heater air intake or exhaust, Support all vent piping per manufacturers installation instructions.

ㆍ

Do not place chemical vapor emitting products near unit.

ㆍ

According to NFPA 720, carbon monoxide detectors should be installed outside each sleeping area.

ㆍ

Never operate the heater unless it is vented to the outdoors.

ㆍ

Analyze the entire vent system to make sure that condensate will not become trapped in a section of vent pipe and therefore reduce

the open cross sectional area of the vent.

DANGER

Figure 4 – CO Warning Label

4. Page18

When removing an existing heater, follow the steps below.

1. Seal any unused openings in the common venting system.

2. Visually inspect the venting system for proper size and horizontal pitch to determine if there is blockage, leakage, corrosion, or other deciencies

that could cause an unsafe condition.

3. If practical, close all building doors, windows, and doors between the space in which the water heater remains connected to the common venting

system and other spaces in the building. Turn on clothes dryers and any appliances not connected to the common venting system. Turn on any

exhaust fans, such as range hoods and bathroom exhausts, at maximum speed. Do not operate a summer exhaust fan.

Close all replace dampers.

4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust the thermostat so the appliance will operate continuously.

5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the ame of a match or candle or smoke from a

cigarette.

6. After it has been determined that each appliance remaining connected to common venting system properly vents when tested as outlined, return

doors, windows, exhaust fans, replace dampers and any other gas burning appliance to their previous condition of use.

7. Any improper operation of the common venting system should be corrected so the installation conforms to the National Fuel Gas Code, ANSI

Z223.1. When resizing any portion of the common venting system, the common venting system should be resized to approach the minimum size

as determined using the appropriate tables in Appendix G in the National Fuel Gas Code, ANSI Z 223.1.

The appliance may be installed on any suitable internal wall (suitable sound-proong may be required when installing onto a stud partition wall).

WARNING

▪ J. WALL-MOUNTING THE APPLIANCE

The appliance must be installed on a wall that can bear its weight (more than 90 lbs. when fully plumbed and full of water). Installing the appliance

on a wall which cannot support its weight could result in property damage, personal injury, or death.

This appliance is too heavy for one person to lift. It is highly recommended to install the appliance with two people. Use caution as to not drop

the appliance, which could damage the appliance and cause property damage and/or severe personal injury. Verify that the appliance is properly

and securely mounted before leaving unsupervised. Failure to comply with the above and properly mount the appliance could result in substantial

property damage, severe personal injury, or death.

This wall mounting system is not seismic rated and should not be applied as such. Failure to comply with the above and properly mount the

appliance could result in substantial property damage, severe personal injury, or death.

POSITIONING THE APPLIANCE ON THE WALL

1. Attach the wall bracket on the location where you want to install the appliance. Ensure it is level and on stud (16" centers) before proceeding.

2. Mark the two drill holes with a pencil or marker. Remove the wall bracket.

3. Drill two (2) holes using a 5/32 drill bit at the marked hole locations.

4. Mount the wall bracket to the wall with the two (2) included anchor bolts. Ensure the mounted bracket is level. See Figure 5A.

5. Align the heater bracket grooves on the back of the appliance with the tongues on the wall bracket and hang the appliance on the bracket. See Figure 5B.

A B

Figure 5 – Wall Mounting the Appliance

1. Vent system must be installed in accordance with local codes, or, in absence of local codes, the National Fuel Gas Code, ANSI Z223.1 / NFPA 54

and/or CSA B149.1, Natural Gas and Propane Installation Code.

2. For installation in Canada, installer supplied plastic vent piping must comply with CAN/CSA B149.1 and be certied to the Standard for Type BH

Gas Venting Systems, ULC-S636. Components of this listed system must not be interchanged with other vent systems or unlisted pipes or ttings.

All plastic components and specied primers and glues must be from a single system manufacturer and must not be intermixed with another

system manufacturer’s products. Clean and dry all applicable surfaces before applying cement.

3. This appliance is designed to be installed in a power vent (using indoor air for combustion and vented to the outdoors) type, or as a direct vent

(sealed combustion) type. In power vent installations, indoor air is used for combustion and exhaust gases are vented directly to the outdoors

through a sealed exhaust vent piped through the wall or roof. In direct vent installations, combustion air must be supplied directly from the outdoors

to the burner, and the ue (exhaust) gases should be vented directly to the outdoors through the wall or roof.

4. This appliance uses 2" or 3" diameter pipe for exhaust vent and intake pipe. It is important to ensure an airtight seal from the appliance collar to

the vent terminations. See Table 10 for a list of Approved Vent Materials.

5. Do not install venting system components on the exterior of the building except as specically required by these instructions.

• Vent terminals must be at least 1 foot from any door, window, or gravity inlet into the building.

• Maintain the correct clearance and orientation between the exhaust vent and intake pipe terminals.

• The exhaust vent and air intake terminals must be at the same height and their center lines must be spaced apart 1 foot minimum.

• The bottom of the exhaust vent and intake pipe terminals must be at least 1 foot above the normal snow accumulation level. In no case should

these terminals be installed less than 1 foot above normal snow accumulation level.

• Do not install the exhaust vent terminals directly above windows or doors.

• Intake pipe terminal must not terminate in areas that might contain combustion air contaminates, such as near swimming pools.

• For sidewall venting, the minimum horizontal distance between adjacent exhaust vent terminations is 1 foot. It is recommended this distance be

greater than 1 foot to better avoid frost damage to building surfaces.

• For roof venting, minimum horizontal distance between any adjacent exhaust vent termination is 1 foot.

• If the exhaust vent is to be terminated in a walled off area (such as a roof with a parapet wall), ensure the exhaust vent terminates a minimum of

10' from nearest wall and extends level with or above the top of the wall. This will ensure ue gas does not get trapped and possibly recirculated

into the intake air pipe, which could contaminate the combustion air.

• Do not locate vent over public walkways, driveways, or parking lots. Condensate could drip and freeze, resulting in a slip hazard or damage to

vehicles and machinery.

▪ A. INTAKE PIPE AND EXHAUST VENT GUIDELINES

WARNING

DO NOT mix vent systems or materials unless specically told to do so in this manual.

DO NOT thermally insulate the exhaust vent or intake pipes.

DO NOT use an electric damper, vent damper, or draft hood with this appliance.

DO NOT locate the exhaust vent or intake pipe terminations where exposed to prevailing winds.

Moisture will be produced by the exhaust vent. Take precautions when determining exhaust vent termination. Moisture may fall from the vent

termination to the ground and turn to ice in freezing conditions. Moisture or ice can produce a hazardous condition.

Exhaust condensate is acidic, and could deteriorate the surface below the exhaust vent termination. Ensure this surface is in good repair (sealed,

painted, etc.) to prevent deterioration.

Pitch the exhaust vent pipe ¼" per foot back to the appliance. This ensures that condensate in the exhaust vent returns to the appliance and

drains properly.

Failure to follow these instructions could result in property damage, severe personal injury, or death.

PART 5 –VENTING

Vent this appliance in accordance with these instructions. Failure to do so will result in property damage, severe personal injury, or death.

DANGER

• DO NOT vent near soffit vents, crawl space vents, or other areas where condensate or vapor could create a nuisance or hazard or cause

property damage.

• DO NOT vent where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valve, or other

equipment.

• Maximum Snow Level Determination: These installation instructions reference snow levels in establishing a minimum height for the installation of

exhaust vent or air intake terminations. Snow levels shall be determined as follows:

a. The installation location may, by ordinance, designate how snow levels are calculated in that location; or

b. In the absence of specic ordinances, snow levels shall be calculated from the average monthly maximum depth of snow accumulation as

indicated by the National Weather Service’s 10 year statistics for the installation location/geographical area.

In addition:

• Total length of vent piping shall not exceed the limits specied in this manual.

• The ue products coming from the exhaust vent will create a large plume when the heater is in operation. Avoid venting in areas that will affect

neighboring buildings or be considered objectionable.

• DO NOT locate exhaust vent or intake pipe in a parking area where machinery may damage the pipe.

In the Commonwealth of Massachusetts and as Required by State and Local Codes:

• The vented gas fueled appliance shall not be installed so its combustion, ventilation, or dilution air is obtained from a bedroom or bathroom.

• Signage: Whenever any through-the-wall (horizontal or sidewall) vent is installed less than seven feet above the nished grade, a metal or plastic

identication plate shall be permanently mounted to the exterior of the building at a minimum height of eight feet above grade directly in line with

the exhaust vent terminal. The sign shall read, in print no less than 0.5 inches in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL

OBSTRUCTIONS".

• Marking of Exhaust Vent and Intake Pipe: Piping used for ventilation, make-up, or combustion air intake shall be labeled as follows:

a. Throughout the entire developed length:

i. Labels must be placed every ten feet for exposed/visible piping; or

ii. Labels must be placed every three feet for concealed piping.

b. At all changes of direction;

c. On each side of a penetration through a partition, wall or ceiling; and

d. The labels shall be black lettering that:

i. Indicates that the piping is used for ventilation, make-up, or combustion air intake, and

ii. The letters shall be sized equal to a minimum of the pipe diameter. However, for piping with a diameter exceeding two inches, said lettering

does not need to be larger than two inches.

WARNING

The building owner is responsible for keeping the exhaust and intake terminations free of snow, ice, or other potential blockages, as well as

scheduling routine maintenance. Failure to keep the vent piping terminations clear and properly maintain the heater could result in property

damage, severe personal injury, or death.

For each oor containing bedroom(s), a carbon monoxide detector and alarm shall be placed in the living area outside the bedrooms, as well as

in the room that houses the heater. Detectors and alarms shall comply with NFPA 720 (latest edition). Failure to comply with these requirements

could result in product damage, severe personal injury, or death.

Figure 6 – Vent Termination Detail

Table 9 – Vent Termination Clearances

NOTE: For clearances not specied in ANSI Z223.1/NFPA 54 or CAN/CSA-B 149.1, please use clearances in accordance with local installation codes

and the requirements of the gas supplier.

DESCRIPTION US CANADA

Clearance above grade, veranda, porch, deck, or balcony 1 foot (30 cm)

Clearance to window or door that may

be opened

Direct Vent 1 foot

36 in (91 cm)

Power Vent

4 feet below or to side of

opening; 1 foot above open-

ing

Clearance to permanently closed window *

Vertical clearance to ventilated soft located above the terminal within a hori-

zontal distance of 2 feet from the center line of the terminal

Clearance to unventilated soft *

Clearance to outside corner *

Clearance to inside corner *

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

sembly

Clearance to service regulator vent outlet *

Above a regulator within 3

feet (91 cm) horizontally of

the vertical center line of

the regulator vent outlet to a

maximum vertical distance of

15 ft (4.5 m)

Clearance to non-mechanical air sup-

ply inlet to building or the combustion

air inlet to any other appliance

Direct Vent 1 foot

3 feet (91 cm)

Power Vent

4 feet below or to side of

opening; 1 foot above open-

ing

Clearance to a mechanical air supply inlet

3 feet above if within 10 feet

horizontally

6 feet (1.83 cm)

Clearance above paved sidewalk or

driveway located on public property

Direct Vent *

7 feet (2.13 m)

Power Vent 7 feet

Clearance under veranda, porch, deck, or balcony * 1 foot (30 cm)

▪ B. APPROVED VENT MATERIALS

▪ C. ALLOWED COMBINED VENT LENGTHS

WARNING

Vent adaptors are not designed as load-bearing devices, and must not be used to support exhaust vent piping. All vent pipes must be properly

connected, supported, and the exhaust must be pitched a minimum of ¼" per foot back to the appliance to allow drainage of condensate. Failure

to properly support vent piping and follow the information in this statement could result in product damage, severe personal injury, or death.

• The Exhaust and intake venting installed with this Combi Boiler must be approved materials listed above. DO NOT REMOVE the factory

installed vent collars. Doing so WILL VOID warranty.

• PVC/CPVC pipe and ttings of the same diameter are considered interchangeable.

• Use of cellular core pipe PVC (ASTM F891), cellular core CPVC, or Radel® (polyphenysulfone) in nonmetallic venting systems is prohibited.

• DO NOT connect PVC/CPVC to Polypropylene without an approved vent connector.

• Any transition to Polypropylene MUST be done in the vertical within ve (5) feet of the appliance.

• When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the water heater vent connection, and at the termination when using

a RHEEM PVC termination kit. DO NOT mix AL29-4C piping from different manufacturers unless using adapters specically designed for the

purpose by the manufacturer.

• Covering non-metallic vent pipe and ttings with thermal insulation is prohibited.

• DO NOT obstruct the ow of combustion or ventilation air.

• When using Pipe Cement/Primer, follow the instructions included with the Cement/Primer closely. Clean and dry all applicable surfaces before

applying.

Failure to follow these directions will result in substantial property damage, severe personal injury, or death.

DANGER

NOTICE

Consult Table 10 or the most recent edition of ANSI Z223.1/NFPA 54 or CAN/CSA B149.1 as well as all applicable local codes and regulations

when selecting vent pipe materials.

APPROVED EXHAUST VENT AND INTAKE PIPE MATERIAL

Item Material

Standards for Installation in:

United States Canada

Exhaust vent

or Intake pipe

and ttings

CPVC schedule 40 ASTM-D2846

PP, CPVC, and PVC venting must be ULC-S636 Certied.

IPEX is an approved manufacturer in Canada, supplying vent

material listed to ULC-S636.

PVC schedule 40 ANSI/ASTM D1785

Polypropylene ULC-S636, UL-1738

Stainless Steel

AL29-4C

Certied for Category IV and direct vent

appliance venting

Certied for Category IV and direct vent appliance venting

Pipe Cement

PVC ANSI/ASTM D2564

IPEX System 636 Cements & PrimersCPVC ANSI/ASTM F493

Pipe Primer PVC / CPVC ASTM F656

2" VENT 3" VENT

EXHAUST

(EQUIVALENT LENGHTH)

INTAKE

(EQUIVALENT LENGHTH)

EXHAUST

(EQUIVALENT LENGHTH)

INTAKE

(EQUIVALENT LENGHTH)

MINIMUM MAXIMUM MINIMUM MAXIMUM MINIMUM MAXIMUM MINIMUM MAXIMUM

14' (4.2M) 50' (15M) 14' (4.2M) 50' (15M) 14' (4.2M) 100' (30M) 14' (4.2M) 100' (30M)

Table 10 – Approved Venting Materials

Table 11 – Approved Vent Lengths

CAUTION

High heat sources (sources generating heat 100°F / 37°C or greater, such as stove pipes, space heaters, etc.) may damage plastic components

of the appliance as well as plastic vent pipe materials. Such damages ARE NOT covered by warranty. It is recommended to keep a minimum

clearance of 8" from high heat sources. Observe heat source manufacturer instructions, as well as local, state, provincial, and national codes,

laws, regulations and ordinances when installing this appliance and related components near high heat sources.

Total equivalent vent length should not exceed fty (50) feet (15M) in 2" pipe, or one hundred (100) feet (30M) in 3" pipe for the exhaust venting.

Total equivalent vent length should not exceed fty (50) feet (15M) in 2" pipe, or one hundred (100) feet (30M) in 3" pipe for the intake piping.

▪ D. TIGHTENING APPLIANCE COLLAR TO EXHAUST VENT AND INTAKE PIPE

WARNING

Vent adaptors are not designed as load-bearing devices, and must not be used to support exhaust vent piping. All vent pipes must be properly

connected, supported, and the exhaust must be pitched a minimum of ¼" per foot back to the boiler to allow drainage of condensate. Failure to

properly support vent piping and follow the information in this statement could result in product damage, severe personal injury, or death.

CAUTION

Failure to provide a minimum total vent length of 14 equivalent feet could result in property damage and improper appliance operation.

This Combi Boiler has a built-in control to limit the exhaust temperature to 149°F (65°C).

As a result, the Combi Boiler can be vented with Schedule 40 PVC.

In high temperature applications, the exhaust temperature can exceed 149°F (65°C).

In that case, you must use Schedule 40 CPVC or Approved Polypropylene (PP) in the USA or Type BHSpecial Gas Vent Class IIB (CPVC) or

Class IC(Polypropylene) that conforms to ULC-S636 in Canada.

a. The equivalent lengths of friction loss in elbows are listed below:

• 5 feet (1.5M) for each additional 3" 90° elbow

• 2.5 feet (.75M) for each additional 3" 45° elbow

• 8 feet (2.4M) for each additional 2" 90° elbow

• 4 feet (1.2M) for each additional 2" 45° elbow

• Some terminations are considered elbows, and deduction should be applied. For example, a turndown 90° or an open T termination should

be considered a 90° elbow.

• For 2" diameter installations, install a reducing coupling in a vertical section of pipe ABOVE the pipe clamp installed on the Boiler. See Figure 8.

b. For example: If the 2" exhaust vent has two 90° elbows and 10 feet of PVC pipe we will calculate: Exhaust Vent Equivalent Length = (2x8) + 10

= 26 feet.

Further, if the 2" intake pipe has one 90° elbow, one 45° elbow, and 10 feet of PVC pipe, the following calculation

applies: Intake Pipe Equivalent Length = 8 + 4 + 10 = 22 feet.

NOTE: The intake pipe and exhaust vent lengths do not have to be of equal length. There is no balancing requirement between intake and exhaust.

PVC Venting

This Combi Boiler is set to "PVC" (factory default). The Combi Boiler will control and maintain the exhaust temperature

below 144°F (62°C) and the Combi Boiler will shut down when the exhaust temperature exceeds 149°F (65°C).

CPVC or Polypropylene(PP) Venting

When you design a high temperature application (the exhaust temperature can exceed 149°F (65°C)),you must use Schedule 40 CPVC or Approved

Polypropylene (PP) in the USA or Type BH Special Gas VentClass IIB (CPVC) or Class IC(Polypropylene) that conforms to ULC-S636 in Canada and

must change theVent Material Setting as follows.

In this case, the Combi Boiler will control and maintain the exhaust temperature below 195°F (90.5°C)and the Combi Boiler will shut down when the

exhaust temperature exceeds 200°F (93°C).

This appliance uses 2" or 3" diameter pipe for exhaust vent and intake pipe. In order to use 2" pipe, it is required to reduce pipe size in a vertical length

of pipe with a reducing coupling (not included). Follow the steps below to install 2" or 3" pipe into the appliance collar. See Figure 7 & 8 for additional

details.

1. Clean and dry the appliance connection. DO NOT use primer or cement on the appliance connection.

2. Tighten the clamps using a screwdriver.

3. Ensure the pipe is secure before continuing installation.

4. For 2" installations, install a reducing coupling in a vertical section of pipe. See Figure 8.



NOTE: REDUCING VENT SIZE;

TRANSITIONING FROM 3” TO

2” VENT PIPE MUST ALWAYS

TAKE PLACE IN A VERTICAL

POSITION TO PREVENT

CONDENSATE BLOCKAGE

Figure 7 – Installing the 3" Pipe into the Exhaust Vent Connection

Figure 9 – Direct Vent, Roof and Sidewall Vent Terminations

Figure 8 – Transitioning from 3" to 2" Vent Pipe

▪ E. VENT TERMINATION

WARNING

All PVC vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼" per foot back to the appliance to allow

drainage of condensate. When placing support brackets on vent piping, the rst bracket must be within 1 foot of the appliance and the balance at

4 foot intervals on the vent pipe. Appliance venting must be readily accessible for visual inspection for the rst three feet from the appliance.

1. Direct Vent, Two Pipe Roof and Sidewall Vent Terminations

ELBOW

12" Min (30cm)

Figure 10 – Direct Vent, Vent Terminations (with Optional Kits)

Figure 11 – Screen Installation

Figure 8 – Transitioning from 3" to 2" Vent Pipe

WARNING

All PVC vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼" per foot back to the appliance to allow

drainage of condensate. When placing support brackets on vent piping, the rst bracket must be within 1 foot of the appliance and the balance at

4 foot intervals on the vent pipe. Appliance venting must be readily accessible for visual inspection for the rst three feet from the appliance.

2. Direct Vent, Optional Horizontal and Vertical Vent Kits

3. Screen Installation

After connecting the intake air and exhaust vent pipes, it is required

to install the included screens into the exhaust vent and intake pipe

terminations to prevent damages to the unit due to blockages. Clean

the vent terminations and glue the screens into the terminations. See

Figure 13 for installation detail.

3”(7.6cm) Vent Screen

1/4”(0.6cm) Mesh

Two screens of 2 “and 3” are provided. Please purchase and install additional screens if

necessary.

SAFETY INSTRUCTIONS

Do not connect any other appliance vents to the appliance exhaust vent or intake pipes.

Exhaust

Air Inlet

Min. 12 ”

above grade

or snow level

Exhaust

Air-inlet around

Perimeter

Sidewall Venting with Kit

EXHAUST

INTAKE

Sidewall Venting

with Concentric Vent

Kit

MAINTAIN 12 ” MINIMUM

CLEARANCE ABOVE

HIGHEST ANTICIPATED

SNOW LEVEL OR GRADE,

CONCENTRIC VENT KIT

1” MIN.

IMPORTANT:

INTAKE LEG MUST

BE FACING UP

EXHAUST

INTAKE

Roof Venting

ith Concentric Vent

12”OVER MAXIMUM SNOW

LEVEL OR 24

” - WHICHEVER

IS GREATER

NCENTRIC VENT KIT

NOTE: EXTEND VENT RUNS WHEN

TRANSITIONING TO A LARGER

DIAMETER MUST ALWAYS TAKE

PLACE IN A VERTICAL POSITION

Sidewall Venting with

Concentric Vent Kit

Roof Venting

Concentric Vent

Kit

Sidewall Venting

with Kit

DO NOT PLACE

DRYER IN PROXIMITY

TO WATER HEATER

Figure 12 – Do Not Install in a Contaminated Space

4. Power Venting, Indoor Combustion Air Installation in

Conned or Unconned Space

This heater requires fresh, uncontaminated air for safe

operation and must be installed in a mechanical room where

there is adequate combustion and ventilating air. NOTE: To

prevent combustion air contamination, see Table 8.

Combustion air from the indoor space can be used if the

space has adequate area or when air is provided through a

duct or louver to supply sufcient combustion air based on

the heater input. Never obstruct the supply of combustion air

to the heater. If the heater is installed in areas where indoor

air is contaminated (see Figure 13) it is imperative that the

heater be installed as direct vent so that all combustion air

is taken directly from the outdoors into the heater intake

connection.

Unconfined space is space with volume greater than 50

cubic feet per 1,000 Btu/hour (4.8 cubic meters per kW) of

the total input rating of all fuel-burning appliances installed in

that space. Rooms connected directly to this space, through

openings not furnished with doors, are considered part of the

space.

Confined space is space with volume less than 50 cubic

feet per 1,000 Btu/hour (4.8 cubic meters per kW) of the

total input rating of all fuel-burning appliances installed in

that space. Rooms connected directly to this space, through

openings not furnished with doors, are considered part of the

space.

When drawing combustion air from inside a conventionally

constructed building to a conned space, such space should

be provided with two permanent openings: one located 6"

(15 cm) below the space ceiling, the other 6" (15cm) above

the space oor.Each opening should have a free area of one

square inch per 1,000 Btu/hr (22㎠/kW) of the total input

of all appliances in the space, but not less than 100 square

inches (645㎠).

If the conned space is within a building of tight construction,

air for combustion must be obtained from the outdoors as

outlined in the Venting section of this manual.See Figure 13.

WARNING

Breathing Hazard – Carbon Monoxide Gas

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

ㆍ

Do not operate heater if ood damaged.

ㆍ

Install vent system in accordance with local codes

and manufacturers installation instructions.

ㆍ

Do not obstruct heater air intake or exhaust,

Support all vent piping per manufacturers

installation instructions.

ㆍ

Do not place chemical vapor emitting products

near unit.

ㆍ

According to NFPA 720, carbon monoxides

detectors should be installed outside each sleeping

area.

ㆍ

Never operate the heater unless it is vented to the

outdoors.

ㆍ

Analyze the entire vent system to make sure that

condensate will not become trapped in a section

of vent pipe and therefore reduce the open cross

sectional area of the vent.

Figure 13 – NOTE: These drawings are meant to demonstrate system venting only. The installer is responsible for

all equipment and detailing required by local codes.

INDOOR COMBUSTION AIR

(SINGLE PIPE) _HORIZONTAL

INDOOR COMBUSTION AIR

(DIRECT VENT) _HORIZONTAL

INDOOR COMBUSTION AIR

(DIRECT VENT) _VERTICAL

INDOOR COMBUSTION AIR

(SINGLE PIPE)_VERTICAL

1΄(30cm)

3ft. Min.

1΄(30cm)

INSERT SCREEN IN

EACH OPEN END

OF TEE

INSERT SCREEN IN

OPEN END OF ELBOW

INSERT SCREEN IN

OPEN END OF ELBOW

INSERT SCREEN IN

OPEN END OF ELBOW

12” over maxium snow level or

24” whichever is greater.

12” over maxium

snow level or 24”

whichever is greater.

ROOF FLASHING

INSERT SCREEN IN OPEN

END OF EACH ELBOW

3"Min

(7.5cm)

3"Min

(7.5cm)

MAINTAIN 12"(30cm) MINIMUM CLEARANCE

ABOVE HIGHEST ANTICIPATED SNOW LEVEL

OR GRADE, WHICHEVER IS GREATER.

MAINTAIN 12"(30cm) MINIMUM CLEARANCE

ABOVE HIGHEST ANTICIPATED SNOW LEVEL

OR GRADE, WHICHEVER IS GREATER.

1. Due to its efcient design, the appliance produces condensate (water) as a normal by-product. This condensate is acidic, with a pH level between

3 and 4. This condensate must be drained away from the appliance and disposed in accordance with all local regulations.

2. Use corrosion-resistant materials approved by the Authority Having Jurisdiction (AHJ) to drain condensate. In the absence of an AHJ, the included

exible plastic hose, or eld supplied ½" PVC and CPVC drain pipe complying with ASTM D1785, F441, or D2665 may be used. Cement must

comply with ASTM D2564 for PVC or F493 for CPVC. For Canadian applications, use CSA or ULC certied PVC or CPVC pipe, ttings, and

cement.

3. Local building codes may require an in-line neutralizer to be installed (not included) to treat the condensate. Follow all the installation instructions

included with the neutralizer. If a neutralizer is installed, periodic replacement of the limestone (or neutralizing agent) will be required. The rate of

depletion of the limestone varies with usage of the appliance. During the rst year of appliance operation, check the neutralizer every few months

for depletion.

4. Route the drain line to a nearby oor drain, laundry tub, or condensate pump.

1. Condensate line must be pitched at least 1/4" per foot to properly drain. If this cannot be done, or a very long length of condensate hose is used,

you must increase the condensate line to a minimum of 1" ID and place a tee in the line after the condensate neutralizer to properly reduce

vacuum lock in the drain line.

2. Plastic pipe should be the only material used for the condensate line. Steel, brass, copper, or other materials will be subject to corrosion or

deterioration.

3. NEVER install condensate lines outside. It is very important that the condensate line is not exposed to freezing temperatures or any type of

blockage. Damages due to frozen or blocked condensate lines ARE NOT covered by warranty.

4. Support of the condensate line may be necessary to avoid blockage of the condensate ow.

5. An error will appear on the appliance display if condensate line is blocked. The appliance will not operate with a blocked condensate line. It is

extremely important to have this condition repaired by a qualied service technician.

PART 6 – INSTALL THE CONDENSATE DRAIN

NOTE: If a nearby laundry tub is used as a disposal for waste water from the washing machine, draining the condensate into this tub allows the

soapy water discharge to neutralize the acidic condensate.

NOTE: This appliance has an internal condensate trap that must be cleaned and maintained. See Maintenance section of this manual for instructions

on maintaining the trap.

NOTES:

Condensate piping to oor drain

Condensate piping with pump

Figure 14 – Condensate Piping to Floor Drain and with Pump

CAUTION

If using a condensate pump, select one approved for use with condensing appliances and furnaces. The pump should have an overow switch to

prevent property damage from condensate spillage.

It is very important that the condensate piping be no smaller than ½". To prevent sagging and maintain pitch, condensate piping should be

supported with pipe supports, and pitched ¼" per foot to allow for proper drainage.

The condensate line must remain unobstructed, allowing free ow of condensate. If condensate freezes in the line, or if line is obstructed in any

other manner, condensate can exit from the tee, resulting in potential water damage to property.

PART 7 – GAS PIPING

WARNING

FIRE AND/OR EXPLOSION HAZARD

To avoid serious injury or death, the gas line installation and the gas line inlet pressure test must be done by a licensed professional.

Always match the appliance with the type of gas supplied to the unit (natural gas or LP gas). This appliance must be converted into propane

operation unless specically manufactured for use with propane. Follow Gas Conversion Manual instructions (separate document). Propane

ready appliances have the sufx “LP" after the model serial number.

Failure to ensure the appliance is set to operate on the provided gas supply could result in property damage, personal injury, or death.

1. Gas Pipe Sizing

This information is for reference use only. Refer to gas pipe manufacturer specications for actual delivery capacity. The DOE standard for Natural

Gas is 1100 BTU/ft . Contact the local gas supplier for actual BTU/ft rating.

▪ A. GAS PIPE SIZING TABLES

Pipe

size

Length (ft)

10'(3m) 20'(6m) 30'(9m) 40'(12m) 50'(15m) 60'(18m) 70'(21m) 80'(24m) 90'(27m) 100'(30m) 125'(37.5m)

3/4˝ 360 247 199 170 151 137 126 117 110 104 92

1˝ 678 466 374 320 284 257 237 220 207 195 173

1-1/4˝ 1390 957 768 657 583 528 486 452 424 400 355

1-1/2˝ 2090 1430 1150 985 873 791 728 677 635 600 532

2" 4020 2760 2220 1900 1680 1520 1400 1300 1220 1160 1020

2 1/2" 6400 4400 3530 3020 2680 2430 2230 2080 1950 1840 1630

3" 11300 7780 6250 5350 4740 4290 3950 3670 3450 3260 2890

4" 23100 15900 12700 10900 9660 8760 8050 7490 7030 6640 5890

Pipe

size

Length (ft)

10'(3m) 20'(6m) 30'(9m) 40'(12m) 50'(15m) 60'(18m) 70'(21m) 80'(24m) 90'(27m) 100'(30m) 125'(37.5m)

1/2˝ 454 312 250 214 190 172 158 147 138 131 116

3/4˝ 949 652 524 448 397 360 331 308 289 273 242

1˝ 1787 1228 986 844 748 678 624 580 544 514 456

1-1/4˝ 3669 2522 2025 1733 1536 1392 1280 1191 1118 1056 936

1-1/2˝ 5497 3778 3034 2597 2302 2085 1919 1785 1675 1582 1402

2" 10588 7277 5844 5001 4433 4016 3695 3437 3225 3046 2700

2 1/2" 16875 11598 9314 7971 7065 6401 5889 5479 5140 4856 4303

3" 29832 20503 16465 14092 12489 11316 10411 9685 9087 8584 7608

4" 43678 30020 24107 20632 18286 16569 15243 14181 13305 12568 11139

Table 13. For 8" WC ~ 10.5" WC initial supply pressure

Table 12. For Less than 8" WC initial supply pressure

Table 14. Maximum Undiluted Propane (LP) Delivery Capacity in Thousands of Btu/H (0.5" WC Pressure Drop)

Maximum Natural Gas Delivery Capacity (0.5" WC Pressure Drop)

Maximum Natural Gas Delivery Capacity (3.0" WC Pressure Drop).

Contact the Gas Supplier for Btu/Cubic Ft. of the Supplied Gas. 1000 BTU/Cubic Ft. is a Typical Value

** For reference only. Please consult gas pipe manufacturer for actual pipe capacities.

Pipe

size

Length (ft)

10'(3m) 20'(6m) 30'(9m) 40'(12m) 50'(15m) 60'(18m) 80'(24m) 100'(30m) 125'(38m) 150'(45m) 175'(53m) 200'(60m) 250'(76m)

1/2˝ 291 200 160 137 122 110 101 94 89 84 74 67 62

3/4˝ 608 418 336 287 255 231 212 197 185 175 155 140 129

1˝ 1150 787 632 541 480 434 400 372 349 330 292 265 243

1-1/4˝ 2350 1620 1300 1110 985 892 821 763 716 677 600 543 500

1-1/2˝ 3520 2420 1940 1660 1480 1340 1230 1140 1070 1010 899 814 749

2˝ 6790 4660 3750 3210 2840 2570 2370 2200 2070 1950 1730 1570 1440

Figure 15 – Gas Line with Shut-Off Valve Detail

1. The gas connection tting on the appliance is 3/4" male NPT.

NOTE: The pipe size must not be less than ½".

2. The supply line must be sized for the maximum output of the appliance being installed. If there are additional gas appliances from the main supply

line, measure the size of the supply line according to the COMBINED total maximum BTUH draw for the appliances as if they were operating at the

same time.

3. Measure the length of the gas supply line from the gas meter to the appliance. Appliance must be installed downstream of the gas meter to ensure

adequate gas supply. Use the tables in this manual or refer to the gas line manufacturer’s sizing information to determine the correct supply pipe

size.

4. A manual gas shut-off valve should be installed in the gas supply line close to the appliance. See Figure 15 for detail.

5. To facilitate any future maintenance, it is also recommended that an approved gas union tting be installed in the supply line between the shut-off

valve and the connection on the appliance.

6. Test the gas pressure to make sure it meets the minimum standards and does not exceed the maximum standards of the appliance.

7. Leak test the gas line pipe before placing the appliance in operation. Only use approved leak detector liquid solutions to check for leaks.

8. Do not operate the appliance until all connections have been completed and the heat exchanger is lled with water.

▪ B. GAS CONNECTION REQUIREMENTS

GAS VALVE OFF

GAS VALVE ON

Figure 15 – Gas Line with Shut-Off Valve Detail

Figure 16 – Natural Gas Piping Installation

Figure 17 – LP Gas Piping Installation

NOTE: Capacity to be Not Less than Total Capacity of Connected Appliances.

Burner

Air & Gas

Mixing

Burner

Air & Gas

Mixing

DHW

Plate

Heat

Exchanger

Primary Heat

Exchanger

Secondary Heat

Exchanger

Primary Heat

Exchanger

Secondary Heat

Exchanger

Circulation Pump

Gas

Condensate

Cold Water Inlet

(DHW)

Hot Water Outlet

(DHW)

Pressure Relief Valve

(DHW)

Pressure Relief Valve

for Heating

Circulation Pump

Gas

Condensate

Heating Supply

Heating Return

Auto Feeder

Pressure Relief Valve

for Heating

Auto Feeder

DHW

Plate

Heat

Exchanger

AUTODESK � � � � � � � � � �

Burner

Air & Gas

Mixing

Burner

Air & Gas

Mixing

DHW

Plate

Heat

Exchanger

Primary Heat

Exchanger

Secondary Heat

Exchanger

Primary Heat

Exchanger

Secondary Heat

Exchanger

Circulation Pump

Gas

Condensate

Cold Water Inlet

(DHW)

Hot Water Outlet

(DHW)

Pressure Relief Valve

(DHW)

Pressure Relief Valve

for Heating

Circulation Pump

Gas

Condensate

Heating Supply

Heating Return

Auto Feeder

Pressure Relief Valve

for Heating

Auto Feeder

DHW

Plate

Heat

Exchanger

AUTODESK � � � � � � � � � �

PART 8 – WATER PIPING

[Space Heating Mode] [Domestic Hot Water Mode]

▪ A. GENERAL PLUMBING CONNECTION GUIDELINES

• Pipe material must be suitable to meet local codes and industry standards.

• The pipe must be cleaned and without blemish before any connections are made.

• Do not apply a torch within 12" of the appliance. Doing so could damage the appliance. Such damages ARE NOT covered by product warranty.

• The size of the hot water pipe should be ¾" diameter and the central heating water pipe should be 1" in diameter.

• To ease future maintenance isolation valves are recommended on both the CH and DHW loops.

• All piping should be insulated.

Figure 18 – Operating Description – Water Flow

▪ B. DHW PIPING

▪ C. CENTRAL HEATING PIPING SYSTEM WATER PIPING METHODS

Use both thread tape and pipe dope to connect to the ¾" domestic water inlet and outlet. A shut off valve between the city water supply and DHW

inlet is recommended for ease of service. Rheem offers threaded ¾" Rheem tankless isolation valves with DHW pressure relief valve for ease of

installation and future service. See Optional Equipment, this manual.

It may be recommended to use a back flow preventer – check local codes. If a back flow preventer or a no return valve is used, a thermal

expansion tank must be installed on the cold water supply between the appliance and valve.

EXPANSION TANK AND MAKE-UP WATER

1. Ensure that the expansion tank is designed and sized to correctly handle system water volume and temperature.

WARNING

To control thermal expansion, a thermal expansion tank suitable for potable water should be installed in systems with an installed backflow

preventer. DO NOT use a closed type expansion tank. Follow expansion tank manufacturer’s specications to properly size an expansion tank to

the installation. Failure to properly accommodate thermal expansion could result in property damage, severe personal injury, or death.

Expansion tanks must be sized according to total system volume. This includes all length of pipe, all xtures, appliances, etc. Failure to properly

size system expansion could result in wasted time, money, and possible property damage, personal injury, or death.

Burner

Air & Gas

Mixing

Burner

Air & Gas

Mixing

DHW

Plate

Heat

Exchanger

Primary Heat

Exchanger

Secondary Heat

Exchanger

Primary Heat

Exchanger

Secondary Heat

Exchanger

Circulation Pump

Gas

Condensate

Cold Water Inlet

(DHW)

Hot Water Outlet

(DHW)

Pressure Relief Valve

(DHW)

Pressure Relief Valve

for Heating

Circulation Pump

Gas

Condensate

Heating Supply

Heating Return

Auto Feeder

Pressure Relief Valve

for Heating

Auto Feeder

DHW

Plate

Heat

Exchanger

AUTODESK � � � � � � � � � �

Piping symbol legend

Figure 19 – Piping Legend

1.This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing

required by local codes.

2. All closely spaced tees shall be within 4 pipe diameters center to center spacing.

3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

4. The minimum pipe size of DHW piping should be ¾" diameter and Heating piping should be 1" in diameter.

5. Piping shown is Primary/Secondary. System ow (secondary loop) must be greater than the appliance’s primary loop ow.

6. Install a minimum of 12 diameters of straight pipe upstream of all circulators.

7. In a valve-based system, each heating zone has a zone valve which opens when that zone calls for heat.

Each zone thermostat is wired to its corresponding zone valve. Contacts in the zone valves provide a signal to

the appliance to operate when there is a call for heat.

8. Unit is equipped with built-in primary pump for the heating loop. This pump is sized to ensure proper ow rate through

the appliance heat exchanger and related piping. On long pipe runs, it is recommended to keep the pump at

maximum speed (setting 3). DO NOT lower it from the factory default.

9. Install a backow preventer valve in the make-up water supply to the unit as required by local codes.

AUTODESK � � � � � � � � � �

DIAPHRAGM (OR BLADDER) EXPANSION TANK

Always install an automatic air vent on top of the air separator to remove residual air from the system.

2. The expansion tank must be located following recognized design methods. See expansion tank manufacturer’s instructions for details.

3. Connect the expansion tank to the air separator only if the air separator is on the suction side of the circulator. Always install the system ll

connection at the same point as the expansion tank connection to the system.

Use both thread tape and pipe dope to connect to the 1" heating water outlet and inlet.

CAUTION

Undersized expansion tanks cause system water to be lost from the relief valve, causing make-up water to be added. Eventual appliance failure

can result due to excessive make-up water addition. SUCH FAILURE IS NOT COVERED BY WARRANTY.

Use at least the MINIMUM pipe size for all appliance loop piping (connecting appliance to and from the primary/secondary connection). DO NOT

pipe the appliance in any conguration other than primary/secondary. All piping methods shown in this manual use primary/secondary connection.

This is to avoid the possibility of inadequate ow through the appliance. Using less than the required minimum pipe size and piping in anything

other than a primary/secondary installation could result in system problems, property damage, and premature appliance failure. Such problems

ARE NOT covered by product warranty.

AUTODESK � � � � � � � � � �

Note:

* 1 External Pump Terminal : ‘10:EP’ should be ‘on’ in Installer Mode to activate this terminal.

* 2 Air Handler Terminal : ‘8:AH’ should be ‘on’ in Installer Mode to activate this terminal.

Ref: Page 37

Ref: Page 36

Wiring diagram for External Options

NOTES:

1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes.

2. All closely spaced tees shall be within 4 pipe diameters center to center spacing.

3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

4. The minimum pipe size of DHW piping should be ¾" diameter and CH piping should be 1" in diameter.

5. Circulators are shown with isolation anges. The alternative is standard anges with full port ball valves. Purge valves can be used with circulator

anges as an alternative.

6. Piping shown is Primary/Secondary. System ow (secondary loop) must be greater than the appliance’s primary loop ow.

7. Install a minimum of 12 diameters of straight pipe upstream of all circulators.

8. VERY IMPORTANT – Minimum ow rates outlined in this manual must be maintained through the heat exchanger to minimize short cycling.

9. In a valve-based system, each heating zone has a zone valve which opens when that zone calls for heat. Each zone thermostat is wired to its

corresponding zone valve. Contacts in the zone valves provide a signal to the appliance to operate when there is a call for heat.

10. Unit is equipped with built-in primary pump for the heating loop. This pump is sized to ensure proper flow rate through the appliance heat

exchanger and related piping. On long pipe runs, it is recommended to keep the pump at maximum speed (setting 3). DO NOT lower it from the

factory default.

11. NOTE: DO NOT INSTALL a ow check or a pump with ow check on the return line of the primary loop going to the appliance. This will isolate

the appliance from the expansion tank, causing pressure to build up in the unit and the Pressure Relief Valve to discharge.

Figure 20 – CH and DHW Piping

Primary / Secondary Piping with Zone Valves DHW Priority.

AUTODESK � � � � � � � � � �

10:EP mode should to

be ‘ON’ in Installer Mode

to activate this terminal.

NOTES:

1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes.

2. All closely spaced tees shall be within 4 pipe diameters center to center spacing.

3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

4. The minimum pipe size of DHW piping should be ¾" diameter and CH piping should be 1" in diameter.

5. Circulators are shown with isolation anges. The alternative is standard anges with full port ball valves. Purge valves can be used with circulator

anges as an alternative.

6. Piping shown is Primary/Secondary. System ow (secondary loop) must be greater than the appliance’s primary loop ow.

7. Install a minimum of 12 diameters of straight pipe upstream of all circulators.

8. VERY IMPORTANT – Minimum ow rates outlined in this manual must be maintained through the heat exchanger to minimize short cycling.

9. Each heating zone of a pump-based system has its own circulator which turns on when a zone thermostat calls for heat.

10. Unit is equipped with built-in primary pump for the heating loop. This pump is sized to ensure proper flow rate through the appliance heat

exchanger and related piping. On long pipe runs, it is recommended to keep the pump at maximum speed (setting 3). DO NOT lower it from the

factory default.

11. NOTE: DO NOT INSTALL a ow check or a pump with ow check on the return line of the primary loop going to the appliance. This will isolate

the appliance from the expansion tank, causing pressure to build up in the unit and the Pressure Relief Valve to discharge.

Figure 21 – CH Piping – Zoning with Pumps

Primary / Secondary Piping with Zone Pumps DHW Priority. (Outdoor Reset)

AUTODESK � � � � � � � � � �

NOTES:

1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes.

2. This Rheem Combi Boiler can control the operation of an Air Handler when a thermistor is used in combination with the Air Handler.

3. The minimum pipe size of DHW piping should be 3/4" diameter and CH piping should be 1" diameter.

4. Unit is equipped with built-in primary pump for the Air Handler. This pump is sized to ensure proper ow rate through the appliance heat exchanger

and related to Air Handler. On long pipe runs, it is recommended to keep the pump at maximum speed (setting 3).

5. The Air Handler function is designed to stop the Air Handler’s pump and fan operation when the Combi Boiler's heating function

is not operating due to DHW operation, Combi Boiler errors or Low Water in the Combi Boiler.

6. The Air Handler turns off when the following conditions arise:

ㆍ

Thermistor open or short.

ㆍ

The Combi Boiler is supplying DHW, or it is in stand-by for DHW mode.

ㆍ

The Combi Boiler is turned off.

7. Make-up water (Auto feed mode) is in progress.

8. In order to set up the Air Handler, from Installer Mode 8:AH mode should be activated.

Figure 22 – CH Piping with Air Handler

Air Handler Piping.

AUTODESK � � � � � � � � � �

▪ D. CH AND DHW PRESSURE RELIEF VALVES

An external pressure relief valve must be installed on this appliance for both the CH and DHW loops. When installing, observe the following

guidelines. Pressure relief valves must be installed as close to the appliance as possible. No other valves should be placed between the pressure

relief valve and the appliance. Failure to comply with these guidelines can result in substantial property damage, personal injury, or death.

This appliance has a high-temperature shut-off switch built in as a standard safety feature. Therefore, a “pressure only" relief valve is required. DO

NOT operate this appliance before the supplied pressure relief valve is installed with sufcient relieving capacity in accordance with the ASME rating

plate on the appliance.

CH Loop

This appliance is provided with a CH pressure relief valve that complies with the ANSI/ASME Appliance and Pressure Vessel Code, Section IV

(Heating Appliances). The included 30 psi CH Pressure Relief Valve must be installed on the CH supply line to ensure a compliant installation and

safe operation. The valve is meant to be eld installed. DO NOT install a CH pipe line relief valve with a pressure rating greater than 30 psi. This is

the maximum allowable CH relief valve setting for this appliance.

DHW Loop

This appliance must be installed with a DHW pressure relief valve that complies with local codes, but not less than valves certied as meeting the

requirements of Relief Valves for Hot Water Supply Systems, ANSI Z21/CSA4.4 by a nationally recognized lab that maintains periodic inspection of

production listed equipment. A DHW pressure relief valve is not included with the appliance, and is to be eld supplied and installed. DO NOT install

a DHW relief valve with a pressure rating greater than 150 psi. This is the maximum allowable DHW relief valve setting for this appliance.

After installing the relief valves and lling and pressurizing the system, test the operation of the valves by lifting the levers. Make sure the valves

discharge freely. If a valve fails to operate correctly, replace it with a new relief valve. Ensure that the maximum BTU/H rating on the pressure relief

valve is equal to or greater than the maximum input BTU/H rating of the combination appliance.

WARNING

To avoid water damage or scalding due to relief valve operation:

• Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a manner that will

prevent possibility of severe burns or property damage should the relief valve discharge.

• Discharge line must be as short as possible and the same size as the valve discharge connection throughout its entire length.Failure to follow

these directions will result in substantial property damage, severe personal injury, or death.

• Discharge line must pitch downward from the valve and terminate at least 6" above the oor drain, making discharge clearly visible.

• The relief line cannot be in contact with any live electrical parts.

• Discharge line shall terminate plain, not threaded, with a material serviceable for temperatures of 375°F or greater.

• Do not pipe discharge to any location where freezing could occur.

• No shutoff valve may be installed between the relief valve and appliance or in the discharge line. Do not plug or place any obstruction in the

discharge line.

• Test the operation of the relief valve after lling and pressurizing the system by lifting the lever. Make sure the valve discharges freely. If the

valve fails to operate correctly, replace it with a new relief valve.

• Test relief valve at least once annually to ensure the waterway is clear. If valve does not operate, turn the appliance “off" and call a plumber

immediately.

• Take care whenever operating relief valve to avoid scalding injury or property damage.

• For appliances installed with only a pressure relief valve, the separate storage vessel must have a temperature and pressure relief valve

installed. This relief valve shall comply with Relief Valves for Hot Water Supply Systems, ANSI Z21.22/CSA4.4.

FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD RESULT IN FAILURE OF RELIEF VALVE OPERATION, RESULTING IN

POSSIBILITY OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.

Install wiring and electrically ground appliance in accordance with the authority having jurisdiction or, in the absence of such an authority, follow the

National Electrical Code, NFPA 70, and/or CSA C22.1 Electrical Code-Part 1 in Canada. Failure to follow all applicable local, state, and national

regulations, mandates, and building supply codes for guidelines to install the electrical power supply could result in property damage, serious

personal injury, or death.

PART 9 – CONNECT ELECTRICAL POWER / INITIAL STARTUP

WARNING

ELECTRICAL SHOCK HAZARD – To ensure safety, turn off electrical power supply at service entrance panel before making any electrical

connections to avoid possible electric shock hazard. Failure to do so could result in property damage, serious personal injury, or death.

This appliance is equipped with a three prong plug. It should only be plugged directly into a properly grounded three prong receptacle. DO NOT

remove the ground plug from the plug. Doing so could result in property damage, serious personal injury, or death.

▪ A. GENERAL OPERATING CONDITIONS

▪ B. WIRING INFORMATION

▪ C. DIP SWITCHES

• Temperature

- Operating Ambient Temperature Range: 14 ~ 140°F(-10 to 60°C)

- Operating Relative Humidity: Up to 90% at 104°F (40°C)

1. This appliance must be properly grounded. Ensure the electrical outlet (120V / 15 Amp minimum) that the appliance will be plugged into is

properly grounded.

There is one set of DIP switches. The appliance is default set at the factory to operate on Natural Gas with a 3" vent.

2. The wiring diagrams contained in this manual are to be used for reference purposes only.

3. Refer to these diagrams and the wiring diagrams of any external controls used with the installation when wiring the appliance. Read, understand,

and follow all wiring instructions supplied with the controls.

4. Do not disconnect the power supply when the appliance is in normal operation.

NOTE: For additional electrical protection, the use of a surge protector is recommended. Damage caused by power surges is not covered by the

warranty.

Figure 23 – Manual Power Switch and Appliance Plug Details

NOTICE

If the appliance display does not come ON, rst check the plug. Then check the electrical panel circuit breaker and reset it if necessary. If the

circuit breaker trips again, do not reset. Disconnect the plug and have a qualied technician diagnose the problem.

Manual Switch

Terminal Block

Figure 24 – Dip Switch Detail

Table 15 – Dip Switch Detail

Table 16 – System Control Settings

12345

DIP SWITCH OFF ON

1 – 3 Factory Use Only Factory Use Only

4 Factory Use Only Factory Use Only

5 Gas Type LP NG

6 High Fire Normal High Fire

7 Low Fire Normal Low Fire

MAXIMUM FLAME DETECTING VOLTAGE 2.5V

PRE-PURGE TIME (Tp) Maximum 10 seconds , Minimum 1 seconds

SAFETY TIME (IGNITING TIME) (Ts) 2 seconds

IGNITING INTERVAL TIME 2 seconds

POST-PURGE TIME (Tip) 170 seconds

OVER-HEATING PROTECTION DETECTION TIME <3 seconds

Figure 24 – Dip Switch Detail

Figure 25 – Electrical Wiring Diagram

Fan Start Coil

GND

Fan End Coil

DC 14V

RPM Sensor

Burner Limit Switch

High Limit Switch

AGM /Y Phase

BK 1

AGM Y Phase

AGM /X Phase

AGM X Phase

GND

AGM Position Sensor

DC 24V

AGM

(Air Gas Mixer)

DHW Thermistor

Heating Supply Thermistor

Exhaust Thermistor

DC 5V Input

Flow Signal Output

Ground

DIP Switch

Flame Sensor

Flow Control Valve

BR8

Water Flow Sensor

Flow Contol Valve Y Phase

Flow Control Valve /Y Phase

Flow Contol Valve X Phase

Flow Control Valve /X Phase

GND

Flow Contol Valve Position Sensor

DC 14V

Fan Motor

AC 24V Input

Outdoor Temperature

Sensor

AC 24V

Low

Water

Cut Off

Air

Heat

(T-T)

External Pump Output

Max 2.0 Amp

External AC 24V Output

Max 0.5 Amp

CN4

CN7

CN14

CN12

CN11

CN15

CN20

CN22

CN17

CN18

CN9

CN3

Color Designations

(15-3.11 of ANSI Y14.15)

Black

Brown

Red

Orange

Yellow

Green

Blue

Violet

Gray

White

(BK)

(BR)

(R)

(O)

(Y)

(G)

(BL)

(V)

(GY)

(W)

Control Panel (P-960C)

Figure 26 – Ladder Diagram

Table 17 – Appliance Wiring 1

CN No. Pin No. Part Color Normal Value

CN18

1,9

AC120V Input BK/W AC 120 V

2,10

AC120V Output Y/Y AC 120 V

3,11

Auto Feeder BL/BL AC 120 V

4,12

Igniter R/R AC 120 V

5,13

Circulation Pump BL/BR AC 120 V

6,14

Gas Valve V/V AC 120 V

3-Way Valve

Heating

AC 120 V

8 DHW

15 Common

BK Common

N/A - -

CN11

Water Leakage Detector

DC 14 V

Control Panel (P-960C)

DC 14 V

Air Pressure Sensor

DC 14 V

N/A

Burner Limit Switch

(Overheat Limit Switch)

DC 14 V

High Limit Switch

(Overheat Limit Switch)

DC 14 V

CN17

External Pump

AC 120 V

AC 24V Input

AC 24 V

AC 24V Output

AC 24 V

CN20

Air Handler

- -

CN22

Low Water Cut Off

- -

CN15

Heat Demand (T-T)

- -

CN4

1 N/A - -

2 Ground BL DC 30 V

3 Fan VDD R DC 14 V

4 Fan Start Coil W DC 30 V

5 Fan End Coil BK DC 30 V

6 Fan RPM Sensor Y DC 14 V

Table 18 – Appliance Wiring 2

CN No. Pin No. Part Color Normal Value

CN7

Flame Sensor

DC 5 V

8 BK

Heating Supply Thermistor

DC 5 V

9 BK

DHW Thermistor

DC 5 V

10 R

DHW Cold Water Thermistor

DC 5 V

11 BL

Exhaust Thermistor

DC 5 V

12 BR

Heating Return Thermistor

DC 5 V

13 BL

N/A

14 -

CN12

1 AGM /Y Phase BK DC 24 V

2 AGM Y Phase BR DC 24 V

3 AGM /X Phase R DC 24 V

4 AGM X Phase O DC 24 V

5 Ground Y DC 24 V

6 AGM Position Sensor G DC 24V

7 VDD W DC 24 V

CN14

1 GND Y DC 14 V

2 Flow Control Valve Position Sensor G DC 14 V

3 DC 14V W DC 14 V

4 Flow Control Valve X Phase R DC 14 V

5 Flow Control Valve Y Phase BK DC 14 V

6 DC 14V BL DC 14 V

7 Flow Control Valve /X Phase O DC 14V

8 Flow Control Valve /Y Phase BR DC 14 V

CN3

1 VCC R

DC 5 V

2 Ground BK

3 Pressure Sensor G

4 VCC R

5 Water Flow Sensor W

6 Ground BL

CN9

1 Case Earth G -

2 N/A - -

Press this Button Less than 5 seconds

Change Heating set-point Temperature

100~180°F (38~82°C)

Hold this Button More than 5 seconds

Change DHW set-point Temperature

90~120°F (32~49°C) And DHW High

Temperature 121~140°F (49.4~60°C)

Indicator (Green)

Indicates Unit is Operating

Press this Button Less than 5 sec-

onds DHW Preheating Timer Setting

Hold this Button More than 5 seconds

Time, Day, Month, Year, Days of the

Week setting

Press this button less than 5 seconds: Cancel/Return to previous screen

Hold this button more than 5 seconds when control panel is ON: enter

Status Display Mode

Hold this button for more than

5 seconds when control panel

is OFF: enter Installer Mode

Press This Button Less than 5 Seconds

Turn Control Power Panel ON/OFF

Press this Button Less than 5 Seconds

Select Menu by Pressing Dial Button

Scroll Values by Turning Dial Clockwise(+) or

Counterclockwise(-)

Figure 28 – Appliance Control Panel Detail

Figure 27 – Terminal Block Wiring Detail

PART 10 – OPERATING SYSTEM INSTRUCTIONS

▪ A. CONTROL PANEL

AUTODESK � � � � � � � � � �

Outdoor Temperature

Sensor

Heat Demand

(0-10V)

Connection

Outdoor Temperature Sensor Connection

▪ B. LCD DISPLAY DESCRIPTIONS

▪ C. START-UP SEQUENCE

Figure 29 – LCD Display Detail

LCD also features a backlit lamp that will illuminate:

• When a user action is detected (a button is pressed)

• The display will turn off after approximately 20 seconds if no buttons are pressed

After the appliance is powered ON, the LCD display shows a sequence of information. The icons will ash, followed by various indicators that

describe the appliance controller and software versions. It will take the appliance roughly 15 seconds to cycle through the Start-Up Sequence.

Table 19 – Start-Up Sequence

Display Items Time for Display Remarks

LCD Test

1 Sec All segments “ON”

0.5 Sec All segments “OFF”

Category

1 Sec Pdn

1 Sec 0051

Software Version for Front Panel

1 Sec SPn

1 Sec 00.XX

Software Version for Appliance

1 Sec SFn

1 Sec XX.XX

Hardware Version for Appliance

1 Sec Hdn

1 Sec 00XX

AUTODESK � � � � � � � � � �

Clock

DHW Preheat Scheduled Hours

Current and DHW Preheat scheduled Day

Internal Pump Icon

Heating activated Icon

Status Display

DHW High Temperature Icon

Temperature Unit

Lock Mode Icon

Communication Status

Burner ON Icon

External Pump(Heating) Icon

Air Handler Icon

Warm Weather

Cutoff Icon

DHW Preheat

activated Icon

Outdoor Reset Icon

DHW activated Icon

DHW Preheat Timer Icon

Information Icon

Freeze

Prevention Icon

AUTODESK � � � � � � � � � �

CURRENT TIME : AM 1:39

CURRENT DAY : MONDAY

DHW Preheat is scheduled to run Monday 5:00am~6:30am and

6:00pm~8:00pm

Heating Temperature Setting: 180

°F

[ Example ]

Figure 30 – Initial Display Screen Example

The Control System can operate through user and service modes that have specic LCD outputs and dedicated controls, including:

• Change the Heating / DHW Set-Point Temperature

• Lock Mode

• Error Mode

• Status Display Mode

• Outdoor Temperature Mode

• Installer Mode

NOTE: The initial display screen will differ depending on a number of factors, including whether the appliance detects a call for heat or hot water.

NOTE: The operation of the high temperature Domestic Hot Water can be set separately.

Press and hold the button for 5 seconds when the display is powered ON to change the DHW Set-Point for General Temperature Range. The

DHW icon and current Set-Point will display and ash. This indicates that the DHW Set-Point can be changed. Factory DHW Set-Point is 120°F (49°

C). Initial and General Temperature DHW Set-Point Range is 90~120°F (32~49°C).

The recommended starting temperature is 120°F (49°C).

Turn the dial counterclockwise to lower and clockwise to raise the DHW Set-Point. After changing the temperature, press the dial button

to save the Set-Point.

To change the DHW Set-Point above 121°F (49.5°C) of High Temperature Range, press and hold the button for 5 seconds to get to General

Temperature Range, then press and hold the button again for 5 seconds for High Temperature Range Set-Point.

High Temperature DHW Set-Point Range is 121~140°F (49.5~60°C).

Turn the dial counterclockwise to lower and clockwise to raise the DHW Set-Point. After changing the temperature, press the dial button to

save the Set-Point.

Figure 31 – DHW Set-Point Screens

▪ D. CHANGING THE DHW SET-POINT

1. Press the ON.

2. Press the. Then, is displayed and blinking.

3. Press the again so today’s day [For Example: Sunday] is blinking. Then turn the clockwise or counterclockwise until the ‘the desired day’ is

displayed.

4. Press the to save the Day.

5. Current Time is blinking,then turn the clockwise or counterclockwise until ‘the desired hour’ is displayed.Press the to save the Hour(Icon is lit).

Then the next ‘Time Icon’ will be blinking. Continue pushing the to select each 30 minute time block that is consecutive. To skip some time blocks

turn the to next desired time and press the to select the next time blocks. Press the to save the setting.

6. Press the to return to ‘Day’. Repeat steps 3-5 for each day of the week.

7. After completing all settings, press the three times to return to normal mode.

NOTE: The operation of the DHW preheat activated setting can be set separately.

Press the . The control panel must be off.

Press and hold the for 5 seconds to enter ‘Installer Mode’.

Turn the clockwise until 9:PH is displayed. Then press the so is blinking.

Turn the clockwise so ‘on’ and are blinking.

Then press the to save the setting.

[For Example] Today is Sunday DHW Preheat is scheduled to run Sunday 8:00am~10:00am and 6:00pm~8:00pm.

▪ E. SETTING FOR DHW PREHEAT ACTIVATION

▪ F. SETTING FOR DHW PREHEAT TIMERV

Hotter water increases the risk of scald injury. Scalding may occur within 5 seconds at a setting of 140°F (60°C). Water temperature over 125°F

can instantly cause severe burns, or death, from scalds. Children, disabled, and elderly are at the highest risk of being scalded. See instruction

manual before setting temperature at appliance. Feel water before bathing or showering!

DANGER

Figure 32 – DHW Preheat Activation Screen

Figure 33 – DHW Preheat Timer Screen

Status Display Mode will activate when is pressed and held for 5 seconds when the display panel is turned on at Standby Mode.

Press the button when the display panel is powered ON. The display will appear as follows. The set-point will ash when the CH Set-Point can be

changed.

This function can be checked and set in User Mode as above parameters.

To enter the User Mode,Press the button on.

Press and hold the button around 5 seconds.

And then “A:GA" is rst displayed on the display screen, turn the dial button clockwise or counterclockwise to scroll through the displayed

parameters in this mode.

Press the button again to return to normal mode.

NOTE: The control system will not allow the changes if Lock Mode (C:TL) is activated. Lock Mode (C:TL) will have to be turned off before making

further changes.

▪ G. STATUS DISPLAY MODE (or USER MODE)

▪ H. CHANGE THE CH SET-POINT

Table 20 – Status Mode Display Screen Descriptions

Parameter Detail Description

A: GA/L DHW Flow Rate Current Flow Rate (GA: GPM/°F/psi(Default) or L: LPM/°C/BAR)

b:FM Fan Speed Current Fan Speed

C:TL Lock Mode Lock mode is used (On) or unused (oFF)

d:TP

H.SUP Current (Heating Supply Thermistor) temperature (°F/°C)

H.rEt Current (Heating Return Thermistor) temperature (°F/°C)

d.Hot Current (DHW Thermistor) temperature (°F/°C)

d.CLd Current (DHW Cold Water Thermistor) temperature (°F/°C)

Eht Current (Exhaust Thermistor) temperature (°F/°C)

Od Current (Outdoor Temperature Sensor) temperature (°F/°C)

E:WP Heating Water Pressure Current Heating Water Pressure (psi/BAR)

F:FS Voltage of Flame Sensor Current Flame Sensor (Vdc)

g:EH Error History View the Error History (E0:XX ~ E9:XX)

H:RH

(Running History)

PLUg X 1000 hour (Power-on Time)

bnH.H X 1000 hour (Heating Burn Hour)

bnH.d X 1000 hour (DHW Burn Hour)

bnC.H X 1000 Time (Heating Burn Cycle)

bnC.d X 1000 Time (DHW Burn Cycle)

PPHr X 1000 hour (Pump Running Time)

I:MD 199A / 180A Model [199A:100k (180k DHW) BTU/hr, 180A:120k (199k DHW) BTU/hr]

J:GT ng/LP Current Gas type

K:Pr Pcb / PnL Current Software version(Pcb:Circuit Board, PnL:Control Panel)

NOTE: The operation of the DHW preheat activation setting can be set separately.

• Blinking on the control panel is not an Error Status.

• The unit has the ‘Outdoor Reset (Energy Saving)’ feature, but this feature is disabled(Factory Default).

• is lit on the control panel, the Outdoor Reset (Energy Saving) is enabled.

• Heating Temperature is changing automatically based on the Outdoor Temperature.

Press the ON. Press the Button.

The and ‘current Heating temperature setting’ will be blinking.

Heating temperature can be adjusted by turning the from 100°F to 180°F (38°C~82°C) in 1°F(0.5 °C) intervals.

Press the to set the Heating Temperature and return to normal mode.

Figure 34 – Status Mode Screen

Figure 35 – CH Set-Point Screen

How To Enter “Installer Mode"

1. Turn off the power to the Control Panel.

2. Press and hold the button for more than 5 seconds to get into the ‘Installer Mode’.

3. Turn the clockwise or counterclockwise to search to the desired selection in the ‘Installer Mode’.

4. Press to save setting value.

▪ I. INSTALLER MODE

Secondary Show

Primary Show

Primary Show Secondary Show

Description

Parameter Index Step 1 Step 2 Step 3 Default

1:HT

Heating

Temp

Range

121~180°F

(49.5~82°C)

180°F

(82°C)

This setting is for changing the heating set temperature

range.

• You can change the Highest Set Temperature (HI) and

the Lowest Set Temperature (Lo) by adjusting the num-

bers on the display.

• If 2:TR (Outdoor Temperature Reset) is activated (‘on’)

then the settings for 1:HT will be overridden by 2:TR

settings.

80~120°F

(26~49°C)

100°F

(38°C)

2:TR

Outdoor

Temp Reset

oFF - - O

This setting activates or deactivates the Outdoor Tempera-

ture Reset function.

• appears and lights up when the Outdoor Tempera-

ture Reset function is activated.

• Please check the connection of the outdoor temperature

sensor if is blinking.

• You can’t change the heating set temperature manu-

ally while this function is on, because the heating set

temperature is determined by the outdoor temperature

automatically.

on - - -

3:TY

(This

param-

eter doesn’t

show if

2:TR is Off)

Type of

Heating

System

A.Ftb - -

120~180°F

(49~82°C)

This section is used to select which type of Heating Sys-

tem is being used.

•There are 6 typical Heating Systems that are available

-Finned Tube Baseboard

-Air Handler

-Cast Iron Baseboard

-Low Mass Radiant Floor

-High Mass Radiant Floor

-Radiator

•For these 6 heating types the low and high temperature

points are

pre-programmed. (See ranges to the left)

* If b.AH is selected, additional steps are needed to be

programmed, see 8:AH

below

•If you would like to use custom low and high temperature

points, select G.CUS and follow the sub menus to set

custom low and high temperature points.

b.AH - -

140~180°F

(60~82°C)

C.Cib - -

100~170°F

(38~76.5°C)

d.LrF - -

80~140°F

(26.5~60°C)

E.rF - -

80~120°F

(26.5~49°C)

F.rAd - -

120~170°F

(49~76.5°C)

G.CUS

121~180°F

(49.5~82°C)

180°F

(82°C)

80~120°F

(26.5~49°C)

100°F

(38°C)

Figure 36 – Installer Mode Screen

Primary Show Secondary Show

Description

Parameter Index Step 1 Step 2 Step 3 Default

4:Od

(This

param-

eter doesn’t

show if 2:TR

is Off)

Outdoor

Temp

A.HI

23~110°F

(-5~43°C)

70°F

(21°C)

The Combi Boiler will automatically use the Outdoor Tem-

perature Settings and the Heating Application to adjust

the set temperature of the unit for the most comfortable

and economical heating temperature.

•A.HI (Outdoor High Temperature Setting)

This should be set at the highest average outdoor

temperature in which the customer would like the heating

system to continue to heat the home.

•b.noH (Warm Weather Shutdown Temperature Setting)

- When ‘on’ the unit will go into energy saving mode and

automatically stop heating when the outdoor temperature

is 5°F (3°C) over the A.HI set point.

- When ‘oFF’ the unit will continue to heat at the lowest

temperature setting even if the outdoor temperature is

greater that A.HI set point.

•C.Lo (Outdoor Low Temperature Setting)

This should be set at the lowest average outdoor

temperature during the winter season. (not the lowest

possible outdoor temperature)

•When the Warm Weather Cutoff is on the will ash

on the control panel.

b.noH

on - O

oFF - -

C.Lo

-4~61°F

(-20~16°C)

20°F

(-6.5°C)

5:bs

(This

param-

eter doesn’t

show if 2:TR

is Off)

Boost

Timing

oFF - - O

The setting is to increase the set temperature of the unit

on cold start ups if the actual room temperature doesn’t

reach the thermostat set temperature quick enough, the

Boost time function will increase the set temperature of

the Combi Boiler 10°F (5.5°C) after the selected Boost

time setting has passed.

Example :

Room thermostat set at 72°F, Combi Boiler set temp at

140°F, and Boost time function set to 30 min. If the room

temperature does not reach 72°F within 30 min then the

Combi Boiler will increase it’s set temp from 140°F to

150°F

1~120 min - - -

6:Vt

Vent

Material

PVC - - O

Vent Material function is used to limit the maximum

exhaust temperature for the vent material used. For

safety reasons the Combi Boiler operation will stop if

the exhaust temperature exceeded maximum allowable

temperature for the venting material.

•PVC maximum exhaust temperature is 149°F (65°C)

•CPVC and PP/STS maximum exhaust temperature is

200°F (93°C)

CPVC - - -

7:EL

High

Elevation

0-2 - - O

Select an altitude range from the following four options

based on where the Combi Boiler is installed.

•0-2 : 0~1,999ft (0~609m)

•2-5 : 2,000~4,999ft (610~1,523m)

•5-8 : 5,000~7,999ft (1,524~2,438m)

•8-10 : 8,000~10,000ft (2,439~3,048m)

2-5 - - -

5-8 - - -

8-10 - - -

8:AH Air Handler

oFF - - O

This function needs to be turned ‘on’ if an Air Handler is

being used as a heating type.

•When heating side is running the fan and pump for the

Air Handler will be on.

•If the DWH side is running the fan and pump for the Air

Handler will be off.

•If this is not set to ‘on’ the Air Handler fan will be running

with no hot supply water from the Combi Boiler and blow

cold air into the home while the DHW side is running.

•When the Air Handle is operating, the will display on

the control panel.

on - - -

Primary Show Secondary Show

Description

Parameter Index Step 1 Step 2 Step 3 Default

9:PH Pre-Heating

oFF - - O

This function is used to preheat the internal DHW plate

heat exchanger during selected times set.

•After turning on this function the timer will need to be

set.

•When Pre Heating function is activated the will be

displayed on the control panel.

on - - -

10:EP

External

Pump

oFF - - O

This setting can activate or deactivate the terminals in the

Combi Boiler for an External Pump (secondary pump) on

the circuit board.

•When the External Pump is activated the will display

on the control panel.

on - - -

11:WP

Water

Pressure

12~26 PSI - - -

This function is to control the water pressure on the

heating side of the Combi Boiler. This will ensure there

is enough water inside the Combi Boiler to operate cor-

rectly.

•The Auto Feeder will ll the system within 10 minutes.

When the pressure of the system is over 2 PSI of Water

Pressure Setting the Auto Feeder will close and water will

stop lling the Combi Boiler.

•Water Relling Pressure: Set Valve - 4 PSI (0.002 BAR)

•Water Relling Stop Pressure: Set Valve + 2 PSI (0.001

BAR)

12:IV Interval 0~20 min - - 3 min

This function is to set up the Interval Time in Heating

Mode to prevent inconsistency of heating

•If the selected time passes and the Combi Boiler’s inside

temperature drops, this function will automatically reignite

the burner in the Combi Boiler.

13:Or

Pump

Overrun

Time

HEAt 0~60 min - 20 min

This mode is to control how long the pump will run after

the heating or DHW demand is satised.

•This setting is to prevent unnecessary running of the

pump and extend the life of the pump.

•HEAt is used for the time after the heating system stops

burning.

•Do.H is used for the time after the DHW system stops

burning.

Do.H 1~20 min - 3 min

14:bt

Burner Set

Temp

A.oFF

0~30°F

(0~16.5°C)

10°F

(5.5°C)

This mode is to set the activation points for the Heating

Mode.

•When the internal temperature of the Combi Boiler is too

high or low the unit will stop burning or start burning.

•Burner Stop Temperature = Heating Set Temperature +

A.oFF

•Burner Operating Temperature = Heating Set Tempera-

ture - b.on

b.on

1~30°F

(0.5~16.5°C)

30°F

(16.5°C)

15:CK Check Parts

A.PP

oFF

This function can check the status of the part.

•A.PP : Pump operation mode.(On 60 seconds, Stop 10

seconds repeat)

•b.Fan : Fan operation mode.(0 ~ 100%)

•C.Ag : AGM zero point check mode.

•d.3-Y : 3 way valve operation mode.(Heating side 10

seconds, DHW side 10 seconds repeat)

•E.FC : Flow rate control valve zero point check mode.

oFF

b.Fan 0~100 0

C.Ag

oFF

d.3-Y

oFF

E.FC

oFF

16:CL Clear

EHIS

This function can delete memory.

•EHIS : Delete error history

•SyS : System Initialization

YES

SyS

YES

17:FS

Fan

Compensation

A.FH2 -30~30 Factory use only This function can compensate fan and AGM.

•A.FH2 : Maximum fan RPM compensation when heating

mode.

•b.FH1 : Maximum fan RPM compensation when DHW

mode.

•C.FL : Minimum fan RPM compensation

•d.Ag : AGM compensation

b.FH1 -30~30 Factory use only

C.FL -30~30 Factory use only

d.Ag -50~50 Factory use only

18:CP

Combustion

rate

HEAt 50~100 100

This function can adjust combustion rate.

•HEAt : Adjust combustion rate when heating mode

•do.H : Adjust combustion rate when DHW mode

do.H 50~100 100

Table 21 – Installer Mode Descriptions

The following screen will display when the appliance encounters an error.

▪ J. ERROR MODE

Code Error Code Description Possible Remedies

Er11 Ignition Failure

• Make sure that the main gas supply valve is open.

• Make sure that the gas supply and inlet gas is within speci-

cation.

Er12 Flame Loss

• Clean the intake air lter.

• Make sure that the main gas supply valve is fully open or

have a professional check the gas supply pressure.

Er16

Overheating Heating SupplyThermistor during

DHWOperation(Exceed 205°F(96°C))

• Turn off the Combi Boiler for at least 30 minutes, and then

restarts it.

• Clean the heating return lter.

• Check the circulation pump operation or speed setting as

speed.

• Flush the heat exchanger.

Er20 High Limit Switch Abnormality

• Turn off the Combi Coiler for at least 30 minutes, and then

restart it.

• Clean the heating return lter.

• Check the circulation pump speed setting as speed Ⅲ.

• Flush the primary heat exchanger.

Er29 Air Pressure Switch Abnormality

• Make sure that the exhaust pipe is free of obstructions.

• Clean the intake air lter.

• Make sure that the condensate trap or drain pipe is not

clogged.

Er30

Outdoor Temperature SensorOpen or Short

Circuit

• Check outdoor temperature sensor. Ensure connections are

secure.

• Check sensor resistance. If resistance is zero, replace the

sensor.

• Contact technical support.

Er31

DHW Cold Water ThermistorOpen or Short

Circuit

• Ensure connections are secure.

• Check sensor resistance. If resistance is zero, replace the

sensor.

Er32 DHW Thermistor Open or Short

Er33 Heating Supply Thermistor Open or Short Circuit

Er34 Heating Return Thermistor Open or Short Circuit

Er35 Exhaust Thermistor Open or ShortCircuit

Er38

Abnormal Operation; Memory Error on the

Circuit Board

• Try to reset rst → Still the same Error Code → Contact

Technical Support.

Er39 False Flame Detection

• Clean the ame window.

• Make sure that the front cover is closed securely.

• Check the ame sensor.

Er40 Gas Leakage

• Turn off the gas.

• Contact technical support.

Er41 Fan Speed Error

• To reset this error code, the power needs to be disconnected

and then reconnected.

Er43 Burner Limit Switch Abnormality • Contact technical support.

Er45 Water Leakage

• Close the water inlet valve before contacting technical sup-

port.

• Contact technical support.

Er54 Low Heating Water Pressure

• Water pressure lower than [Setting Pressure - 4] psi

• Check the auto feeder.

• Check the auto feeder inlet pressure.

• Check the pressure sensor.

Figure 37 – Error Mode Screen

Code Error Code Description Possible Remedies

Er55 Stop Supply Inlet Water.

• If the water pressure is not rising supplement progress at

least 13 psi.

• Check supply water and inlet shut off valve. This valve must

be open.

• Check the auto feeder.

Er56 High Heating Water Pressure

• Water pressure higher than 50 psi.

• Check the pressure sensor.

• Contact technical support.

Er58 LWCO Abnormality

• Ensure the LWCO wiring connection on circuit board.

• Measuring output AC24V from terminal on circuit board in the

case of external LWCO install.

• Make-up water to the system if necessary.

• Contact technical support.

Er59 Pressure Sensor Abnormality

• Check the pressure sensor.

• Contact technical support.

Er61 RPM Sensor • Check fan motor.

Er63

Overheating Heating SupplyThermistor during

HeatingOperation (Exceed 205°F(96°C))

• Turn off the Combi Boiler for at least 30 minutes, and then

restart it.

• Clean the heating water return lter.

• Flush the primary heat exchanger.

Er65 Flow Control ValveAbnormality • Check ow control valve.

Er67 AGM Abnormality

• Try main power switch OFF/ON → Still the same Error Code

→ AGM failure.

Er72 Flame Detected before IgniteAbnormality

• Measure the current from the Flame Sensor when there is no

ame.

• To reset this error code, the power needs to be disconnected

and then reconnected.

Er73 DIP Switch Setting Abnormality • Check the DIP Switch settings.

Er76

Communication Error betweenControl Panel and

CircuitBoard.

• Check connections from Circuit Board to Control Panel.

• To reset this error code, the power needs to be disconnected

and then reconnected.

Er94

Overheating Exhaust Thermistor (The Combi

Boiler shuts down when the exhaust temperature

exceeds 149°F (65°C) for PVC vent or 200°F

(93°C) for CPVC vent.

• Turn off the Combi Boiler for at least 30 minutes, and then

restart it.

• Check the exhaust thermistor and related wiring.

• Make sure that the vent / air intake are properly installed.

• Flush the heat exchanger.

Table 22 – Error Codes with Linked Components, Effects, and Actions

▪ K. OUTDOOR TEMPERATURE MODE

NOTE: If the system requires a xed operating temperature, the outdoor sensor is not required and should not be installed.

There is no connection required if an outdoor sensor is not used in the installation.

1. Use a minimum 18 AWG wire for runs of up to 150 feet.

2. Mount the outdoor sensor on an exterior surface of the building, preferably on the north side in an area that will not be affected by direct sunlight

and will be exposed to varying weather conditions.

NOTE: For correct mounting procedures, follow instructions provided with the sensor.

NOTE: If sensor wires are located in an area with sources of potential electromagnetic interference (EMI), the sensor wires should be shielded, or

the wires routed in a grounded metal conduit. If using shielded cable, the shielding should be connected to the common ground of the appliance.

NOTE: Outdoor Temperature Mode Icon on the display will ash if an Outdoor Sensor or 0~10 Volt is not connected to the appliance.

See Figure 38 to set your Outdoor Reset Curve.

To check the CH Target Temperature while using Outdoor Temperature Mode, press the button while the appliance is operational and the display

panel is powered on.

▪ L. 0~10 VOLT INPUT

NOTE: The optimal set up should be determined for each job location.Default setting: Max Temperature: 180 °F, Min Temperature: 120°F

NOTE: Ensure that the polarity of the connections from the external modulating appliance controller to the appliance is correct.

Reversed polarity could lead to erratic and/or no response from the appliance controller.

NOTE: Outdoor Temperature Mode Icon on the display will ash if an Outdoor Sensor or 0~10 Volt is not connected to the appliance.

Reversed polarity could lead to erratic and/or no response from the appliance controller.

Figure 38 – Outdoor Reset Curve – See Installer Mode for Curve Setting Descriptions

1. A signal from a building management system may be connected to the appliance to enable remote control. This signal should be a 0~10 volt

positive-going DC signal. When the 0~10V input is wired to the appliance terminal strip, a building control system can be used to control the set point

temperature of the appliance. The control interprets the 0~10 volt signal as follows; when the signal is between 0 and 1.5 volts, the appliance will be

in standby mode, not ring. When the signal rises above 1.5 volts, the appliance will ignite. As the signal continues to rise towards its maximum of 10

volts, the appliance will increase in set point temperature.

2. Connect a building management system or other auxiliary control signal to the terminals marked for this purpose on the appliance terminal block

(shown in Piping Diagrams, this manual). Caution should be used to ensure that the 0~10 VOLT + connection does not be come connected to

ground.

NOTE: 0~10V is prioritized. If input voltage is less than 1.5V then T/T will operate.

The range of input voltage is approximately 1.5[V] ~ 10[V] and the heating temperature settings according to this range are as follows.

Reversed polarity could lead to erratic and/or no response from the appliance controller.

0-10 V INPUT TABLE:

When outside voltage is applied to the connector (2) in the wiring diagram,

1. The Outdoor temperature sensor does not work.

2. Symbol is displayed.

3. The heating temperature is automatically set according with the external voltage input.

The water must be potable, free of corrosive chemicals, sand, dirt, and other contaminants. It is up to the installer to ensure the water does not

contain corrosive chemicals or elements that can damage the heat exchanger. Potable water is dened as drinkable water supplied from utility or

well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3) as shown in the table below. If the water contains

contaminants higher than outlined by the EPA, water treatment is recommended and additional, more frequent maintenance may be required.

If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed

professional.

Input Voltage[V]

Heat Temperature [°C]

Heat Temperature [°F]

1.5 30.0 86

2.0 32.7 91

2.5 36.1 97

3.0 38.8 102

- - -

9.0 75.0 167

9.5 77.7 172

10 82.2 180

Contaminant Maximum Allowable Level Contaminant

Maximum Allowable Level

Total Hardness (Residential Use -

Below 140°F water temperature)

200 mg/l (12 grains/gallon) Manganese 0.05 mg/l or PPM

Total Hardness (Commercial Use -

140°F and above water temperature)

120 mg/l (7 grains/gallon) pH 6.5-8.5

Aluminum 0.05 to 0.2 mg/l or PPM Sulfate 205 mg/l or PPM

Chloride 100 mg/l or PPM Total Dissolved Solids (TDS) 500 mg/l or PPM

Copper 1 mg/l or PPM Zinc 5 mg/l or PPM

Iron 0.3 mg/l or PPM

Dissolved Carbon Dioxide

(CO

)

15 mg/l or PPM

Table 23 – 1~10V Input Voltage and Associated Temperature

Table 24 – Water Chemistry Specications

PART 11 – START-UP PREPARATION

▪ A. CHECK / CONTROL WATER CHEMISTRY

WARNING

CAUTION

Thoroughly clean and ush any system that has used glycol before installing the appliance.

Chemical imbalance of the water supply may affect efciency and cause severe damage to the appliance and associated equipment. Water

quality must be professionally analyzed to determine whether it is necessary to treat the water. Various solutions are available to adjust water

quality. Adverse water quality will affect the reliability of the system. In addition, operating temperatures above 135°F will accelerate the build-up

of lime scale and possibly shorten appliance service life. Failure of an appliance due to lime scale build-up, low pH, or other chemical imbalance

IS NOT covered by the warranty.

NOTE: It is recommended you clean heat exchanger at least once a year to prevent lime scale buildup. Follow the maintenance

procedure to clean the heat exchanger in this manual

NOTE: APPLIANCE FAILURE DUE TO IMPROPER WATER CHEMISTRY IS NOT COVERED BY WARRANTY.

Clean system to remove sediment*

1. You must thoroughly ush the system (without the appliance connected) to remove sediment. The high-efciency heat exchanger can be damaged

by buildup or corrosion due to sediment.

2. For zoned systems, ush each zone separately through a purge valve. (If purge valves and isolation valves are not already installed, install them

to properly clean the system.)

3. Flush system until water runs clean and you are sure piping is free of sediment.

ㆍ

Glycol in hydronic applications should include inhibitors that prevent the glycol from attacking metallic system components. Make certain that the

system uid is checked for the correct glycol concentration and inhibitor level.

ㆍ

The glycol solution should be tested at least once a year or as recommended by the glycol manufacturer.

ㆍ

Anti-freeze solutions expand more than water. For example: A 50% by volume solution expands 4.8% in volume for a temperature increase from

32°F to 180°F, while water expands 3% over the same temperature rise. Allowances must be made in system design for expansion.

ㆍ

A 30% mixture of glycol will result in a BTU output loss of 15% with a 5% increase in head against the system circulator.

ㆍ

A 50% mixture of glycol will result in a BTU output loss of 30% with a 50% increase in head against the system circulator.

ㆍ

NOTE: BTU losses apply to both CH and DHW.

▪ B. GLYCOL ANTIFREEZE SOLUTIONS

▪ C. CHECK FOR GAS LEAKS

WARNING

Use only inhibited propylene glycol solutions which are specially formulated for hydronic systems. Ethylene glycol is toxic and can

attack gaskets and seals used in hydronic systems. Glycol mixtures should not exceed 50%.

Before starting the appliance, and during initial operation, smell near the oor and around the appliance for gas odorant or any unusual

odor. Remove appliance front door and smell interior of appliance enclosure. Do not proceed with startup if there is any indication of a

gas leak. Repair any leaks at once.

PROPANE APPLIANCES ONLY – Both natural gas and propane (LP) have an odorant added to aid in detecking a gas leak. Some

people may not physically be able to smell or recognize this odorant. If you are unsure or unfamiliar with the smell of natural gas or

LP, ask the gas supplier. Other conditions, such as "odorant fade," which causes the odorant to diminish in intensity, can also hide or

camouage a gas leak.

It is highly recommended to carefully follow the glycol manufacturer’s recommended concentrations, expansion requirements, and

maintenance recommendations (pH additive breakdown, inhibitor reduction, etc.) You must carefully calculate the additional friction

loss in the system as well as the reduction in heat transfer coefcients.

CAUTION

WARNING

FOR YOUR OWN SAFETY READ BEFORE OPERATING

1. This appliance does not have pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the

burner by hand.

2. BEFORE OPERATING: smell all around the appliance area for gas. Be sure to smell next to the oor because some gas is heavier than air and will settle on

the oor.

WHAT TO DO IF YOU SMELL GAS

ㆍ

Do not try to light any appliance.

ㆍ

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

ㆍ

Immediately call your gas supplier from a neighbor's phone. Follow the gas suppliers' instructions.

ㆍ

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

ㆍ

Turn off gas shutoff valve (located outside of the appliance) so that the handle is crosswise to the gas pipe. If the handle will

not turn by hand, don't try to force or repair it, call a qualied service technician. Force or attempted repair may result in a re or

explosion.

4. Do not use this appliance if any part has been under water. Immediately call a qualied service technician to inspect the appliance and to replace any part of

the control system and any gas control that has been damaged.

5. The applianceshall be installed so the gas ignition system components are protected from water (dripping, spraying, rain, etc.) during appliance operation and

service (circulator replacement, condensate trap, control replacement, etc.)

Failure to follow these instructions could result in property damage, serious personal injury, or death.

If you discover any evidence of a gas leak, shut down the appliance at once. Find the leak source with a bubble test and repair immediately. Do not start the

appliance again until the leak is repaired. Failure to comply could result in substantial property damage, severe personal injury, or death.

Ensure the appliance is full of water before ring the burner. Failure to do so will damage the appliance. Such damage IS NOT covered by warranty, and could

result in property damage, severe personal injury, or death.

Eliminate all system leaks. Continual fresh make-up water will reduce appliance life. Minerals can build up in the heat exchanger, reducing heat transfer,

overheating the heat exchanger, causing heat exchanger failure and possibly resulting in property damage, severe personal injury, or death.

▪ D. FILL AND TEST WATER SYSTEM

▪ E. PURGE AIR FROM CH

1. Fill the system only after ensuring water chemistry meets the requirements listed in this manual.

2. Close the manual and automatic air vents and appliance drain valve.

3. Fill to the correct system pressure. Correct pressure will vary with each application.

a. Typical cold water ll pressure for a CH residential system is 12 psi.

b. Pressure will rise when appliance is turned on and system water temperature increases. Operating pressure of the CH system should never

exceed 25 psi, and must never exceed the relief valve pressure setting.

4. At initial ll and during appliance startup and testing, check system thoroughly for leaks. Repair all leaks before proceeding further.

5. The system may have residual substances that could affect water chemistry. After the system has been lled and leak tested, verify that water pH

and chlorine concentrations are acceptable by sample testing.

It is important to purge the system of air to avoid damage to the appliance

CAUTION

IMPORTANT! While commissioning the system, the air vent on top of the appliance must remain fully open to allow the appliance to properly ll.

Failure to keep the air vent open could lead to improper appliance and system operation.

WARNING

Ensure the appliance is full of water before ring the burner. Failure to do so will damage the appliance. Such damage IS NOT covered by warranty, and could

result in property damage, serious personal injury, or death.

▪ F. PURGE AIR FROM DHW SYSTEM

▪ G. CHECK THERMOSTAT CIRCUIT(S)

To purge air from the system:

a. Connect a hose to the purge valve and route hose to an area where water can drain and be seen.

b. Close the appliance or system isolation valve between the purge valve and ll connection to the system.

c. Close zone isolation valves.

d. Automatic water replenishment in progress when the Combi Boiler is less than the internal pressure 12psi.

e. Open purge valve.

f. Open the isolation valves one zone at a time. Allow water to run through the zone, pushing out the air. Run water until no noticeable air ow is

present. Close the zone isolation valves and proceed with the next zone. Follow this procedure until all zones are purged.

g. Close the purge valve and remove the hose. Open all isolation valves. ‘Error Code 54’ will be indicated at the beginning of auto feeding.This is

normal operation. When auto feeding is completed, ‘Error Code 54’ turns off automatically. It is recommended that you put the pumps into manual

operation to assist in purging the circuits.

h. Disconnect the wires that are connected to the THERMOSTAT terminals of the terminal block. Apply power to the appliance. After the control goes

through the start-up sequence, the display will turn off.

i. Press and hold the button for more than 5 seconds. Then scroll to 15:CK by turning the dial . Press the button. A.PP will show on the

display. Press the button to run the test pump operation. The default is Maximum 10 minutes for 60sec-on and 10sec-off. Turn the dial

counterclockwise from off to on.

j. The CH and internal circulation pumps will come on. Run pumps as required to help bleed out all entrapped air. Some good indicators that air is

removed include the absence of gurgling noises in the pipes and pump operation becoming very quiet. Test mode will stop automatically after the

Maximum time (xed value is 10 minutes), or press the button to leave it manually.

k. After the system has operated for some time, eliminate any residual air by using the manual air vents located throughout the system.

l. If purge valves are not installed in the system, open manual air vents in the system one at a time, beginning with the lowest oor. Close vent when

water squirts out. Repeat with remaining vents.

1. Make sure CH and DHW lines to the appliance are open and full of water. Turn on all electric power to appliance.

1. Disconnect the two external wires connected to the appliance thermostat terminals (low voltage terminal strip).

2. Connect a voltmeter across these two incoming wires with power supplied to the thermostat circuits. Close each thermostat, zone valve and relay

in the external circuit one at a time and check the voltmeter reading across the incoming wires.

3. There should NEVER be a voltage reading.

4. If a voltage reading does occur under any condition, check and correct the external wiring. (This is a common problem when using 3-wire zone

valves.)

5. Once the external thermostat circuit wiring is checked and corrected if necessary, reconnect the external thermostat circuit wires to the appliance

low voltage terminal strip. Allow the appliance to cycle.

2. Open hot water faucets in the DHW system. Start with the faucets nearest the appliance.

3. Keep faucets open until water runs freely and all air is purged. Then move on to faucets further away from the appliance in the system.

4. When water ows freely from all hot water faucets, DHW purging is complete.

▪ H. CONDENSATE REMOVAL

▪ I. FINAL CHECKS BEFORE STARTING APPLIANCE

▪ J. ADJUSTING GAS PRESSURE AT THE APPLIANCE

1. This is a high efciency condensing appliance. Therefore, the appliance has a condensate drain. Condensate uid is nothing more than water

derived from combustion products, similar to that produced by an automobile

when it is initially started.

Condensate is slightly acidic (typically with a pH of 3 to 5) and must be piped

with the correct materials. Never pipe the condensate using steel, copper,

brass or other materials that will be subject to corrosion. Plastic PVC or CPVC

pipe are the only approved materials.

A condensate neutralizer, if required by local authorities, may be purchased

from aftermarket

2. It is very important that the minimum ½" condensate line is sloped downward

away from the appliance to a suitable inside drain. If the condensate outlet

on the appliance is lower than the drain, you must use a condensate removal

pump, available from aftermarket. This pump is equipped with two leads that

can be connected to an alarm or another type of warning device to alert the

user of a condensate overow, which, if not corrected, could cause property

damage.

3. If a long horizontal run is used, it may be necessary to create a vent in the

horizontal run to prevent a vacuum lock in the condensate line.

4. Do not expose the condensate to freezing temperatures.

5. It is very important you support the condensate line to ensure proper

drainage.

1. Verify the appliance and system are full of water and all system components are correctly set for operation.

2. Fill the condensate trap with water.

3. Verify electrical connections are correct and securely attached.

4. Inspect exhaust vent and intake piping for signs of deterioration from corrosion, physical damage, or sagging. Verify exhaust vent and intake

piping are intact and correctly installed per Venting Section (this manual) and local codes.

NOTE: Refer to Figure 39 when adjusting gas pressure. Loosen the screw before checking the gas inlet pressure.

1. The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of the system

at test pressures greater than ½ psi (3.5 kPa).

2. The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the

gas supply piping system at test pressures equal to or less than ½ psi (3.5 kPa).

ADJUSTING GAS PRESSURE AT THE APPLIANCE

1. Open the gas line and water valves.

2. Use a Phillips Head screwdriver to remove the appliance top cover. Remove the front cover.

3. Loosen the gas inlet pressure tap screw three turns with a screwdriver. Connect the manometer to the inlet gas pressure port. See Figure 39.

4. Turn on power to the appliance and open a hot water faucet.

5. The minimum and maximum inlet gas line pressures must meet the requirements shown in Table 25.

Figure 39 – Gas Valve Detail

NOTICE

Do not re (operate) the appliance until all connections have been completed and the heat exchanger is lled with water. Doing so will damage

the appliance and void the warranty.

COMBUSTION SETTINGS

NATURAL GAS LP GAS

FAN

SPEED

LOW HIGH LOW HIGH

CO PPM <60 <200 <60 <200

(%) 8 - 10 8 ½ - 10 ½ 9 – 10 ½ 9 ½ - 10 ½

▪ K. SETTING AND VERIFYING THE COMBUSTION SETTING

6. Remove the manometer. Close the screw on the gas inlet pressure tap.

2. When low re settings have been obtained, ip DIP switch seven (7) to its original (OFF) position. This will return the appliance to normal mode.

*3. Flip DIP switch six (6) to ON (high re). Again check combustion readings with a combustion analyzer.

4. When complete, ip DIP switch six (6) to its original (OFF) position. This will return the appliance to normal mode.

5. Allow appliance to operate normally. Ensure it is operating properly.

6. Reinstall the appliance front cover.

7. Use a Phillips Head screwdriver to reinstall the appliance top cover.

*In order to increase CO₂ values on high re, the gas orice size can be increased to achieve the maximum CO₂ value listed in Table 26. Contact

the factory for recommended orice sizes to achieve the desired setting.

Figure 40 – Gas Valve Offset

Screw

Offset Screw

1. After the appliance has red, ip DIP switch seven (7) to the ON position (low re). Proceed to check appliance combustion values.

NOTE: Use a combustion analyzer to ensure CO and CO₂values are within the range shown in Table 26.

LP GAS NATURAL GAS

Minimum Pressure 8.0" WC Minimum Pressure 3.5" WC

Maximum Pressure 14.0" WC Maximum Pressure 10.5" WC

Table 25 – Gas Pressure Requirements

Table 26 – Combustion Settings

WARNING

It is required to use a combustion analyzer to verify nal adjustment according to the combustion chart (Table 26). Failure to do so could result in serious personal

injury or death.

It is very important that gas conversion be set within the recommended CO measurements listed in Table 26. Visually looking at the burner does not determine

combustion quality. Failure to measure combustion with a Combustion Analyzer and set the throttle within the recommended CO measurements could result in

property damage, severe personal injury, or death.

If the readings obtained are lower or higher than the combustion readings in Table 26, use a 4mm Allen key to adjust the offset screw in a

clockwise (positive) or counterclockwise (negative) direction (approximately 1/4 turn). See Figure 40. Check your combustion values. Repeat this

procedure until the values obtained on the combustion analyzer agree with those stated in Table 26.

NOTE: If the appliance makes a whistling sound (harmonics) at low re, adjust the offset screw in a clockwise (positive) direction (approximately

1/8 turn). Check your combustion values and ensure they agree with those stated in Table 26 before proceeding.

LIGHT OFF ACTIVITIES DATE COMPLETED

YES NO

1) Fill the Heating System

with Water

Has the system been cleaned and ushed?

Does water chemistry meet requirements?

If water chemistry does not meet requirements, are treatment measures put in place?

Check all water piping and connections. Are all leak free and properly supported?

Has the CH system been pressure tested and pressurized to 12 – 25 psi? Has the DHW

system been pressure tested?

2) Exhaust Vent and Intake

Piping

Has the appliance been vented in accordance with the methods and materials listed in this

manual and to meet local codes (vented in approved materials, air supply sufcient for proper

operation, combined vent length within the maximum vent length restriction, vent lengths

minimized, installed with proper terminations, clearances, and pitch, etc.?

Is vent piping properly supported?

Has exhaust vent piping been checked for leaks?

Have the exhaust vent and intake pipes been properly installed into the connectors provided

on the appliance?

3) Condensate Piping / Tub-

ing and Components

Have all condensate line components included with the appliance been installed?

Is the condensate line piped with the approved materials listed in this manual?

Has the condensate line been routed to a laundry tub or other drain?

If necessary, has a condensate pump and/or neutralizer been installed?

4) Gas Piping

Has the gas supply line been piped in accordance with the methods listed in this manual

(supply line no less than ½" gas line is allowed in diameter, length and diameter adequate to

deliver the required BTUs, union and shut-off valve installed, etc.)?

Does the gas type match the type indicated on the appliance rating plate?

Has gas supply line pressure been measured (between 3.5 and 14” WC)?

Has the gas supply line been leak tested per locally approved methods?

5) Pressure Relief Valves

Have you installed approved pressure relief valves on the appliance?

Is the pressure relief valve in the CH line at least 1” in diameter and rated to 30 psi?

Is the pressure relief valve in the DHW line at least ¾” in diameter and rated to 150 psi?

6) Wire the Appliance

Have you connected the power and control wiring per appliance wiring diagram, this manual?

Have all DIP switches been set on the main appliance board?

Is electrical connection polarity within appliance requirements?

Do power specications meet appliance requirements? 120V AC?

7) Start-Up, Adjust, and

Test

If necessary, has the appliance been converted to operate on the proper fuel type?

Has the appliance been started?

Has CO

and CO been checked to ensure proper combustion?

If necessary, has the appliance gas valve been adjusted to achieve proper combustion?

Has the installation been customized per location requirements?

Have all customized system parameters been tested?

Has proper appliance operation been conrmed?

Has the burner ame been checked? Is the burner ame a proper blue color? See Figure 41

for ame sight glass window location.

If the ame does not appear normal, the combustion system may need to be cleaned or

adjusted by a qualied service technician.

FINAL INSTALLATION AP-

PROVALS

SIGNED BY TECHNICIAN DATE

PART 12 – INSTALLATION AND START-UP CHECKLIST

Table 27 – Final Installation Checklist

Table 28 – Temperature Sensor Resistance

Figure 41 – Flame Sight Glass

CH Return Temperature Sensor

Exhaust Temperature Sensor

Temperature (◦F) Resistance (Ω)

-4 62162

5 48440

14 38045

23 30107

32 23998

41 19261

50 15562

59 12655

68 10353

77 8520

86 7051

95 5867

104 4908

113 4125

122 3485

131 2957

140 2520

149 2157

158 1854

167 1600

176 1386

185 1205

194 1051

203 920

212 808

CH Supply Temperature Sensor

DHW Temperature Sensor

Temperature (◦F) Resistance (Ω)

-4 28409

5 22152

14 17408

23 13782

32 10990

41 8824

50 7131

59 5800

68 4747

77 3906

86 3233

95 2690

104 2250

113 1891

122 1598

131 1356

140 1155

149 989

158 850

167 733

176 635

185 552

194 482

203 421

212 370

Outdoor Temperature Sensor

Temperature (◦F) Resistance (Ω)

-4 99200

5 74229

14 56090

23 42790

32 32930

41 25550

50 19990

59 15760

68 12510

77 10000

86 8050

95 6520

104 5310

113 4350

122 3590

PART 13 – TROUBLESHOOTING

TROUBLESHOOTING CHART

PROBLEM POSSIBLE CAUSES

POSSIBLE REMEDIES

No electrical power to the appliance

1. Is the plug on the power supply cord unplugged from the

electrical outlet?

2. Is electrical panel’s 10 Amp circuit breaker tripped?

3. Is the fuse on the circuit board good?

4. Is there a power outage to the home?

1. Reset the plug.

2. Reset the circuit breaker.

3. If the display panel is blank, unplug the unit or contact an

authorized service technician.

4. Contact the power company.

No water available when a faucet is

opened

1. Is the water supply valve shut off at the meter (do cold

water faucets work)?

2. Is the water supply valve near the unit open?

3. Is the water pipe frozen?

4. Is an error code ashing on the display panel (leak

detected)?

1. Open the closed supply valve.

2. Open the water supply valve.

3. Turn OFF the unit, close all water valves and the gas

valve. Contact an authorized service technician.

4. Refer to error code information and contact an authorized

service technician.

Hot water is not available when the

faucet is opened.

1. Does the appliance have power (plugged in)?

2. Is the appliance turned ON?

3. Is an error code ashing on the display panel?

4. Is the gas supply valve open or shut off at the meter (do

other gas devices work)?

1. Restore electrical power to the unit.

2. Press and hold the Power button to turn the unit ON.

3. Refer to the Diagnostic and Error Codes section in this

manual.

4. Open the gas supply valve.

The water temperature is not hot

enough or turns cold during use.

1. Is the faucet open enough to draw at least 0.6 gallons

(2.3L) per minute through the appliance?

2. Is an error code ashing on the display panel?

3. Is the outlet water temperature set too low?

1. Open the faucet to allow more water ow.

2. Refer to the Diagnostic and Error Codes section in this

manual.

3. Adjust the outlet water temperature (refer to the procedure

in this manual).

It takes a long time before hot water

ows from the faucet.

Is the faucet some distance from the appliance?

a. Allow time for the cold water already in the pipes to ow

from the faucet.

b. Have recirculation valves and/or plumbing return line(s)

installed and program the unit for recirculation mode.

The water is not hot enough. Is the water temperature set too low? Adjust the temperature setting.

The water at the faucet is too hot. Is the water temperature set too high? Adjust the temperature setting.

A fan can be heard even when the unit

is not operating.

1. The fan continues to operate after the burner shuts off to

clear the exhaust vent of combustion gases.

2. The fan may run to help prevent freezing.

1. This is normal operation – no action is required.

2. Protect the appliance from freezing temperatures or shut

off and drain the unit.

White “smoke” can be seen coming out

of the exterior exhaust gas vent.

Depending on the outside temperature, water vapor can be

produced as the exhaust is vented.

This is normal operation – no action is required.

Display

Condition

Diagnostic

Possible Corrective Actions

Nothing appears on the

display control panel but

the blower runs at full

speed Nothing appears

on the display control

panel and no other

appliance components

are operating

Control is not receiving

power Control is not

receiving 120V power

Check wiring for short circuit or incorrect wiring

Correct wiring per wiring diagram including

connection of transformer to the control

Check transformer connection to the control

per wiring diagram. Check for 12V output of

transformer

Replace transformer if it is receiving 120V, but

not outputting 12 VAC

Ensure service switch and/or circuit breaker to

appliance is turned ON

Turn on service switch or circuit breaker to

power appliance

Is there 120V at the service switch

Troubleshoot and correct the power supply to

the manual switch

Is the ON/OFF switch inside the appliance

cabinet is turned on

Turn ON the manual power switch inside the

appliance cabinet

Check for 120V at the line voltage terminal

block located inside the appliance cabinet

Correct wiring inside the appliance cabinet

using the wiring diagram in the installation

manual

Inspect the fuse. Replace as necessary

Replace the fuse with the proper part found in

the replacement part section of this manual.

If fuse blows again, recheck the wiring per

diagram

Table 29 – Troubleshooting Chart

DIAGNOSTICS AND SUGGESTED CORRECTIVE ACTIONS

The appliance control is able to record information about the appliance’s condition at the time of the ve previous faults or errors. This information is

available to view in the Installer Mode under the History screen.

The following screens may be displayed when reviewing the appliance history. The table below also includes diagnostic information and possible

corrective actions.

PART 14 – ANNUAL MAINTENANCE PROCEDURES

Display

Condition

Diagnostic

Possible Corrective Actions

Nothing appears on the

display control panel, but

the appliance is operating

Occurs when communica-

tions is lost from the control

to the display

Check for loose connections and proper pin align-

ment / engagement on the control’s plug

Check for continuity on the wire harness from the

display to the control. See repair parts section for

proper replacement part.

Cycle power off and on using appliance power

switch and check for operation

Replace with new display module. See repair parts

section for proper replacement part.

Display repeatedly goes

through initialization

sequence

Occurs when control does

not receive signal from fan

Cycle power off and on using appliance power

switch and check for operation

Replace fan.

Table 30 – Diagnostics and Suggested Corrective Actions

Check the Surrounding Area

Combustible/Flammable Materials

Do not store combustible materials, gasoline, or other ammable vapors or liquids near the appliance. If found, remove these materials

immediately.

Air Contaminants

If allowed to contaminants combustion air, products containing chlorine or uorine will produce acidic condensate that will cause signicant damage

to the appliance. Read the list of potential contaminants and areas likely to have these contaminants in Table 8. If any of these contaminants are in

the room where the appliance is located, or combustion air is taken from one of the areas listed, the contaminants must be removed immediately or

the intake pipe must be relocated to another area.

Ensure the Appliance Cabinet is Closed

Ensure the appliance cabinet is closed. Tighten the two upper and lower screws to secure it. The cabinet must be closed while the appliance is

running.

Check the Power Source

Make sure the power cord is properly connected. The main power line is connected to the manual switch box inside the appliance.

Check the Status of the Control Panel

Observe the Control Panel to ensure the appliance is powered on, and to check for any error codes. Clear any debris from the panel.

Check Exhaust Vent and Intake Pipe Terminations

Verify that the appliance exhaust vent and intake pipe terminations are clean and free of obstructions. Remove any debris from the exhaust vent or

intake pipe openings. If removing the debris does not allow the appliance to operate correctly, contact your qualied service technician to inspect the

appliance and the vent system.

The appliance must be inspected and serviced annually, preferably at the start of the heating season, by a qualied service technician. In addition,

the maintenance and care of the appliance as outlined in this manual must be performed by the user/owner to ensure maximum efficiency

and reliability. Follow the maintenance procedures given throughout this manual. Failure to perform the service and maintenance or follow the

directions in this manual could damage the appliance or system components, resulting in substantial property damage, severe personal injury, or

death.

To prevent the potential of substantial property damage, severe personal injury, or death, eliminate all the materials listed in Table 8 from the area

surrounding the appliance and the vicinity of the combustion air intake. If contaminants are found:

ㆍ

Remove products immediately from area.

ㆍ

If contaminants have been there for an extended period, call a qualied service technician to inspect the appliance for possible damage from

acid corrosion.

If products cannot be removed, immediately call a qualified service technician to re-pipe the combustion air intake piping away from the

contaminated areas.

DANGER

Check Exhaust Vent and Intake Piping

Visually inspect the exhaust vent for any signs of blockage, leakage, or deterioration of the piping. Inspect the exhaust vent bracing.Ensure bracing

is undamaged and in good condition. Notify a qualied service technician immediately if any problems are found.

Check Pressure Relief Valve

ㆍ

Visually inspect the primary pressure relief valve and discharge pipe for signs

of weeping or leakage.

ㆍ

If the pressure relief valve often weeps, the expansion tank may not be

operating properly. Immediately contact a qualied service technician to inspect

the appliance and system.

Check Vent Condensate Drain System

ㆍ

While the appliance is running, check the discharge end of the condensate

drain tubing. Ensure no ue gas is leaking from the condensate drain tubing by

holding your ngers near the opening.

ㆍ

If you notice ue gas leaking from the opening, this indicates a dry condensate

drain trap. If problem persists, contact a qualied service technician to inspect

the appliance and condensate line and rell the condensate trap.

ㆍ

If applicable, check the condensate neutralizer and ensure it is full of

condensate neutralizing marble chips.

Check the Air Vent

Loosen cap one counterclockwise turn to allow air vent to operate. See Figure 43. If the air vent valve works freely without leaking, close the valve by

turning clockwise. If vent does not operate correctly, contact a qualied service technician to replace the vent.

Check Primary and Gas Piping

ㆍ

Remove the appliance cover and perform a gas leak inspection following Operating Instructions, page 2, this manual. If gas odor or leak is

detected, follow procedures on page 2. Call a qualied service technician.

ㆍ

Visually inspect for leaks around the internal appliance water connections and around the heat exchanger. Visually inspect the external system

piping, circulators, and system components and ttings. Immediately call a qualied service technician to repair any leaks.

Operate Pressure Relief Valve

ㆍ

Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoiding any possibility of scalding from hot water.

Visually inspect the intake piping for any signs of blockage. Inspect the entire

length of the intake pipe to ensure piping is intact and all joints are properly

sealed.Inspect the intake pipe bracing.Ensure bracing is undamaged and in good

condition. Notify a qualied service technician if any problems are found.

WARNING

Failure to inspect the venting system and have it repaired by a qualied service technician can result in vent system failure, causing severe personal injury or

death.

Have leaks xed at once by a qualied service technician. Failure to comply could result in substantial property damage, severe personal injury, or death.

Figure 43 – Air Vent Detail

Figure 42 – Cleaning the Air Intake Filter

Cleaning the Air Intake Filter

The air intake lter should be cleaned once a month. If not, the combi boiler

could encounter combustion problems.

To clean the air intake lter:

1. Press the Power button on the control panel to turn off the combi boiler.

2. Disconnect the power supply from the combi boiler.

3. If water heater has been operating, wait for it to cool before continuing.

4. Remove the front cover of the combi boiler cabinet.

5. Pull the lter out of the air intake adapter.

6. Remove the lter from the plastic assembly and clean it with a toothbrush

and clean running water. See Figure 42

Figure 44 – Valve and Hose Connection Details

Check the Burner

Clean the exterior of the burner.

Flushing the CH Closed Loop Heat Exchanger

Flushing the heat exchanger is a complicated procedure

that should only be performed by a qualified service

technician. It is recommended to ush the heat exchanger

annually if water hardness exceeds 12 grains per gallon

(considered extremely hard water). If water hardness falls

below 12 grains per gallon it is recommended to ush the

heat exchanger every two to three years.

NOTE: Improper maintenance WILL VOID appliance

warranty.

1. Disconnect electrical power to the appliance.

2. Close the shutoff valves on both CH supply and CH

return lines (V1 and V2). See Figure 44.

3. Connect one hose (D1, Figure 44) to the valve (V3) and

place the free end in a bucket. Connect one of the hoses

(D3) to the circulation pump outlet and the cold water

inlet line to valve V4. Connect the other hose (D2) to the

circulation pump inlet and place the free end in the bucket.

4. Pour tankless cleaning solution into the bucket. Use an FDA approved cleaner for potable systems on the heat exchanger. Place the drain hose (D1)

and hose D2 to the pump inlet in the cleaning solution.

5. Open service valves (V3 and V4) on the hot water outlet and cold water inlet lines.

6. Turn on the circulation pump. Operate the pump and allow the cleaning solution to circulate through the appliance for at least 1 hour at a rate of 4

gallons per minute.

7. Rinse the cleaning solution from the heat exchanger as follows:

a. Remove the free end of drain hose D1 from the bucket.

b. Close service valve V4 and open shutoff valve V2.

c. Do not open shutoff valve V1.

d. Allow water to ow through the appliance for 5 minutes.

e. Close shutoff valve V2.

8. Disconnect hoses from lines. Properly dispose of used cleaning solution.

9. Remove the CH lter from the appliance and clean out any residues.

10. Repeat process on the DHW loop of the appliance.

ㆍ

Read the temperature and pressure gauge to ensure the system is pressurized. Minimum is 10 psi. Maximum is 25 psi. Lift the relief valve top

lever slightly, allowing water to relieve through the valve and discharge piping.

ㆍ

If water ows freely, release the lever and allow the valve to seat. Watch the end of the relief valve discharge pipe to ensure that the valve does

not weep after the line has had time to drain. If the valve weeps, lift the lever again to attempt to clean the valve seat. If the valve does not

properly seat and continues to weep, contact a qualied service technician to inspect the valve and system.

ㆍ

If water does not flow from the valve when you completely lift the lever, the valve or discharge line may be blocked. Immediately shut the

appliance down per instructions on page 2 and call a qualied service technician to inspect the valve and system.

Cleaning the CH and DHW Inlet Filters (Draining the Appliance)

1. Place a bucket under the appliance to collect the residual water inside the appliance.

2. Press the Power button on the control panel to turn off the electrical power to the appliance. Then turn off the gas valve.

3. Valve off the appliance from the system. If the appliance cannot be isolated from the system, turn off the main water valve.

4. Open the hot water faucets in the system to aid in draining the system.

5. Remove the DHW inlet lter. Then clean it with a toothbrush and clean running water. See Figure 45.

6. Reinstall the DHW inlet lter.

7. Purge air from the DHW lines by opening a hot water faucet in the system. When water ows freely, all air is purged.

8. Repeat the process on the CH inlet lter on the appliance.

9. Reinsert the lter and ensure the lter cap is securely tightened.

10. Connect electrical power to the appliance.

11. Restore water service to the appliance by opening the isolation valves, or turning on the main water valve.

12. Turn on the gas valve. Turn on electrical power to the appliance and press the Power button to turn the appliance on.

WARNING

Water drained from the appliance could be scalding hot. Wait for the appliance to cool before removing the CH or DHW inlet lters. Failure to do so could result in

property damage, personal injury, or death.

Figure 45 – Cleaning the Inlet Filter

CH RETURN FILTER

DHW INLET FILTER

CH RETURN FILTER

DHW INLET FILTER

CH RETURN FILTER

DHW INLET FILTER

Figure 46 – CASE PART

PART I _ CASE PART

Item Description Part Number Qty

1 Gas Inlet Connection RTG20298A 1

2 Water Inlet Valve Assy RTG20298B 1

2-1 Cold Water Temperature Sensor RTG20298C 1

2-2 Cold Water Filter Cap RTG20298D 1

2-3 Cold Water Filter RTG20316BU 1

2-4 O-ring (P20) RTG20298F 1

2-5 O-ring (P18) RTG20298G 1

3 Hot Water Pipe Assembly RTG20316CD 1

3-1 O-ring (P20) RTG20298F 1

3-2 Hot Water Plug RTG20298K 1

3-3 O-ring (P10) RTG20298L 1

3-4 Hot Water Temperature Sensor RTG20316AF 1

4 Flow Control Valve RTG20298N 1

5 O-ring (P16) RTG20299AE 13

6 Water Inlet Elbow RTG20316BL 1

7 Clip(Circle-Small) RTG20316AX 2

8 Clip(Star-Small) RTG20299AU 6

9 Condensate trap RTG20298U 1

9-1 Condensate clip RTG20298V 1

9-2 O-ring (P44) RTG20298W 2

10 Exhaust Assembly RTG20316F 1

11 Air Intake Assembly RTG20298Y 1

12 O-ring (P85) RTG20298Z 2

13 Exhaust and Intake Packing RTG20298AA 2

14 O-ring (P75) RTG20298AB 1

15 Air intake lter RTG20298AC 1

16 Air Intake Filter Bracket RTG20298AD 1

17 Gasket RTG20298AE 2

18 Igniter RTG20316Y 1

19 Siphon Air Pressure Hose RTG20316AW 1

20 Air Pressure switch RTG20298AH 1

21 Bracket (Igniter, Air Pressure Switch) RTG20316H 2

22 Water Leak Detector RTG20298AK 1

23 Wiring Through Way Packing RTG20298AL 1

24 Front Cover Assembly RTG20316A 1

24-1 Control Panel Bracket RTG20298AN 1

24-2 Control Panel Window RTG20298AP 1

25 Control Panel RTG20316V 1

26 Control Panel Steel Bracket RTG20316K 1

Item Description Part Number Qty

PCB (Control Board) RTG20316U 1

Rocker Switch RTG20298AV 1

Control Board Bracket RTG20316BE 1

Case (Top) RTG20316C 1

Case (Bottom) RTG20316B 1

Case RTG20298AZ 1

Case Bracket RTG20316G 1

Case Bracket (Bottom) RTG20298BB 1

Power Cord RTG20316AA 1

O-ring (P4)

RTG20316BZ 1

Heating Return Block

RTG20316R 1

O-ring (P22A)

RTG20316BY 6

Filter Clip

RTG20316BD 1

Heating Return Block Filter

RTG20316S 1

Heating Return Block Cap

RTG20316BV 1

Cap Clip

RTG20316AY 2

Clip (Φ25-Φ31)

RTG20316AZ 2

44 Heating Supply / Return Connection RTG20316BR 2

Hot Water Plate Heat Exchanger

RTG20316AD 1

Hot Water Elbow

RTG20316BK 1

Auto Feeder

RTG20316BS 1

Packing (10A)

RTG20316BW 2

Auto Feeder Pipe

RTG20316AS 1

3 - Way Valve

RTG20316AN 1

T-Elbow RTG20316BM 1

Clip (Star-large) RTG20316BC 2

O-ring (P22) RTG20316BX 4

Relief Valve Pipe RTG20316AU 1

Air Vent RTG20316AM 1

15A Packing RTG20300J 1

Power Transformer RTG20316Z 1

Terminal Block RTG20316AB 1

O-ring (P15) RTG20299AH 1

O-ring (P20) RTG20298F 2

Top Case Packing RTG20316CA 1

Relief Valve Adapter RTG20316BN 1

Relief Valve Adapter Gasket RTG20316CN 1

Table 31 – Case Part

Figure 47 – Heat Exhchanger Part

PART II _ HEAT EXCHANGER PART

Item Description Part Number Qty

Blower Connector

RTG20299A 1

Blower Connector Packing

RTG20299B 1

Burner Assembly

RTG20299C 1

3-1

Burner Head

RTG20299D 1

3-2

Burner Flange

RTG20316BF 1

3-3

Ignition Rod

RTG20299F 1

3-4

Ignition Rod Gasket

RTG20299G 1

3-5

Overheat Switch (Burner)

RTG20316AK 1

3-6

Burner head packing

RTG20299J 1

3-7

Burner head gasket 1

RTG20316CB 1

3-8

Burner head gasket 2

RTG20299L 1

Exhaust Pipe Assembly (Lower)

RTG20316BT 1

Exhaust Pipe Assembly (Upper)

RTG20299R 1

Exhaust Temperature Sensor

RTG20316AH 1

Exhaust Duct Packing

RTG20316CE 1

Flame Detector Sensor Bracket

RTG20299W 1

Flame Detector Sensor

RTG20299X 1

Flame Detector Metal Plate

RTG20316CF

Flame Observation Bracket

RTG20316CG

Flame Observation Glass &

Gasket

RTG20316CH

13 Flame View Glass & Gasket

RTG20316CJ

(Glass)

RTG20316CK

(Gasket)

14 Flame View Bracket

RTG20316CL

Item Description Part Number Qty

15 Burner Fixing Bracket RTG20299Y 1

16 Hot Water Outlet Pipe RTG20316AT 1

17 Overheat Sensor RTG20316AJ 1

18 Water Temperature Sensor RTG20316AE 1

19 Hot Water Outlet Elbow RTG20316BJ 1

20 O-ring (P16) RTG20299AE 6

21 Clip (Star-Small) RTG20316BG 3

22 Water Inlet Pipe RTG20316BP 1

23 Pressure Transmitter RTG20316AL 1

23-1 Pressure Transmitter Clip RTG20316BA 1

24 Packing (20A) RTG20299AK 1

25 Circulation Pump RTG20316W 1

26 Pump Clip RTG20299AR 1

27 Condensate Hose RTG20316AV 1

28 Condensate Hose Clip RTG20299AT 2

29 Pump Outlet Pipe RTG20316AR 1

30 O-ring (P20) RTG20298F 2

31 Water Inlet Pipe Clip RTG20316BB 1

32 O-ring (P22) RTG20316BX 2

33 Clip (Star-large) RTG20316BC 1

34 Water Return Temperature Sensor RTG20316AG 1

Table 32 – Heat Exhchanger Part

Figure 48 – Fan Motor Part

PART III _ FAN MOTOR PART

Item Description Part Number Qty

Fan & AGM Assy NG RTG20316L 1

1 Fan & AGM Assy LP RTG20316M 1

1-1 Fan RTG20300B 1

1-2 O-ring (P62) RTG20300C 1

1-3 AGM (Actuator) NG RTG20316N 1

1-3 AGM (Actuator) LP RTG20316P 1

2 Gas Valve Assembly RTG20316CM 1

2-1 Gas Valve RTG20316X 1

2-2 Gas Valve Plug Bracket RTG20316T 1

Item Description Part Number Qty

2-3 Gas Valve Adapter (Straight) RTG20316AP 2

3 15A Packing (Non-asbestos) RTG20316CC 1

4 15A Packing RTG20300J 1

5 Gas Mixer Packing RTG20300K 1

6 Gas Valve Bracket RTG20300L 1

7 Silencer Body RTG20300M 1

8 Silencer Elbow RTG20300N 1

9 Gas Pipe (Upper) RTG20300P 1

10 Gas Pipe (Lower) RTG20300R 1

11 O-ring (P18) RTG20298G 1

Table 33 – Fan Motor Part

Table 34 – Screw Part

Screw

Item Description

Length

Truss Head Machine Screw

M4 x 8

Flat Head Machine Screw

M4 x 8

Truss Head Tapping Screw

M4 x 10

Truss Head Tapping Screw

M4 x 12

Truss Head with PC Washer Tapping Screw

M4 x 10

Truss Head Tapping Screw

M4 x 6

Round Head Machine Screw

M4 x 12

Round Head with Flange Tapping Screw

M3 x 6

Hexagon Head with Flange Machine Screw

M5 x 16

Truss Head Tapping Screw

M4 x 16

Round Head Machine Screw

M3 x 6

Item Description

Length

Truss Head Machine Screw

M4 x 6

Round Head Tapping Screw

M4 x 16

Truss Head Machine Screw

M5 x 30

Hexagon Head with Flange Machine Screw

M5 x 12

Truss Head Machine Screw

M4 x 25

Round Head Tapping Screw

M4 x 30

Binding Head Tapping Screw

M4 x 10

Round Head Tapping Screw

M3 x 16

Round Head Machine Screw

M4 x 10

Round Head Machine Screw

M5 x 12

Round Head Tapping Screw

M4 x 8

LIGHT OFF ACTIVITIES DATE COMPLETED ________________

Yes No

1) Fill the

heating system

Check all piping and gas connections, verify all are tight

Has the system been cleaned and flushed?

Has the appliance and the system been purged of all air?

Refer to Start-Up Preparation, this manual.

Has the auto air purge feature been used / set? Refer to

Start-Up Preparation, this manual.

Pressurize system (12 – 15 psi) CH ____ PSI

Pressurize system domestic HW

Add water to prime condensate cup

Percentage of glycol in system (0 – 50%) ____ %

Verify proper near appliance piping (Primary/Secondary)

2) Electrical Have the power and control wiring been connected per the

wiring diagram in this manual?

Is the supply voltage 120v and polarity correct?

3) Check gas

pipe

Leak test using locally approved methods (consult

jurisdictional code book)

Has the gas supply line been verified to deliver the required

BTU of the appliance?

Has a union and shut-off valve (no less than ¾” ) been

installed?

Does the gas type match the type indicated on the rating

plate?

Check incoming gas pressure (Max is 12.5" for NG and 13" for LP)

____ in w.c. Static

If necessary, convert the appliance to the proper gas type

Locate the stickers in the appropriate locations on the

appliance

If applicable, have all dip switches been set and verified to

match system requirements?

Verify combustion settings after gas conversion, Carbon

Dioxide

____% CO2 High Fire ____% CO2 Low Fire

Verify combustion settings after gas conversion, Carbon

Monoxide

____ppm

High Fire ____ppm CO Low Fire

What is the “drop” on light off (No more than 1” W.C.)? ____ in w.c. Dynamic

4) Venting Has the appliance been vented with 2" or 3" PVC, CPVC,

Polypropylene, or (AL294C) Stainless for Cat IV

appliances?

Ensure no ABS or PVC Cellular core has been used

Is the vent sloped upward toward the terminal at a rate of ¼”

per ft. or 2% grade?

Have all intake and exhaust joints been properly sealed and

tested?

Are all vent runs properly supported?

Have the termination screens been installed?

Is the vent termination a min of 12” above grade or the

highest anticipated snow level?

Is the total developed vent length including elbows within

the stated max vent length restriction?

5) Condensate

piping / tubing

Is the condensate line piped with the approved materials

listed in this manual?

Does the condensate line have an air inlet at the top/

beginning of the drain? Refer to Install the Condensate

Drain, this manual.

Has the condensate been piped over to a drain, and

checked to be free flowing?

If necessary, has a condensate pump and /or a neutralizer

been installed?

FINAL SIGNED BY TECHNICIAN DATE

START-UP REPORT

10.5

Table 35 – Start-Up Report

MAINTENANCE REPORT

In unusually dirty or dusty conditions, care must be taken to keep appliance cabinet door in place at all times. Failure to do so VOIDS

WARRANTY!

The appliance requires minimal periodic maintenance under normal conditions. However, in unusually dirty or dusty conditions, periodic

vacuuming of the cover to maintain visibility of the display and indicators is recommended.

Periodic maintenance should be performed once a year by a qualified service technician to ensure that all the equipment is operating

safely and efficiently. The owner should make necessary arrangements with a qualified heating contractor for periodic maintenance of

the appliance. Installer must also inform the owner that the lack of proper care and maintenance of the appliance may result in a

hazardous condition.

INSPECTION ACTIVITIES DATE LAST COMPLETED

PIPING

YEAR 2

YEAR 3

YEAR 4

YEAR*

Near appliance piping Check appliance and system piping for any sign of leakage.

Leaking pipes could cause property damage. Make sure all

piping is properly supported.

Vent Check condition of all vent pipes and joints. Ensure all vent

piping is properly supported. Check for obstructions exhaust

and intake termination points.

Gas Check Gas piping, test for leaks and signs of aging. Make sure

all pipes are properly supported.

SYSTEM

Visual Do a full visual inspection of all system components.

Functional Test all functions of the system (central heating, water heating,

safeties)

Temperatures Verify safe settings on appliance or Anti-Scald Valve

Temperatures Verify programmed temperature settings

ELECTRICAL

Connections Check wire connections. Make sure they are tight.

Smoke and CO

detector

Verify devices are installed and working properly. Change

batteries if necessary.

Circuit Breakers Check to see that the circuit breaker is clearly labeled. Exercise

circuit breaker.

Switch and Plug Verify ON/OFF switch and convenience plug are both functional

CONDENSATE

Neutralizer Check condensate neutralizer. Replace if necessary.

Condensate hose Disconnect condensate hose. Clean out dirt and re-install.

(NOTE: Verify the flow of condensate, making sure that the

hose is properly connected during final inspection.)

GAS

Pressure Meas

ure incoming gas pressure (Max is 12.5" for NG and 13" for LP)

Pressure Drop Measure drop in pressure on light off (no more than 1” W.C.)

Check gas pipe for

leaks

Check piping for leaks. Verify that all are properly supported.

COMBUSTION

CO/CO2 Levels Check CO and CO2 levels in Exhaust. Record at high and low

fire.

SAFETIES

ECO (Energy Cut Out) Check continuity on Flue ECO. Replace if corroded.

CH AND DHW LOOPS

It is recommended to flush the CH and DHW heat exchangers

annually if water hardness exceeds 12 grains per gallon

(considered extremely hard water). If water hardness falls below

12 grains per gallon it is recommended to flush the heat

exchanger every two to three years.

In addition, it is recommended to clean the CH and DHW inlet

filters annually.

FINAL INSPECTION

Check list Verify that you have completed entire check list. WARNING:

FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY

OR DEATH.

Homeowner Review what you have done with the homeowner.

TECH SIGN OFF

Table 36 – *Continue annual maintenance beyond the 4th year as required.

10.5

AP18733 REV. 3.2.17

MAINTENANCE NOTES

CUSTOMER INSTALLATION RECORD FORM

The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim. After reading the

important notes at the bottom of the page, please also sign this document.

IMPORTANT NOTES:

Customer: Please only sign after the installer has reviewed the installation, safety, proper operation and maintenance of the system.

In the case that the system has any problems, please call the installer. If you are unable to make contact, please contact your Sales

Representative.

Distributor/Dealer: Please insert contact details.

Customer’s Name:

Installation Address:

Date of Installation:

Installer’s Code/Name:

Product Serial Number(s):

Model Number:

Combustion Setting at Time of Installation:

Comments:

Installer’s Phone Number:

Signed by Installer:

Signed by Customer:

Rheem RCBH199DVLN Prestige High Efficiency Combi Boiler 9.9 GPM 199000 BTU

Product's Documents

Use and Care Manual

Specifications

Rheem RCBH199DVLN Questions and Answers