A.O. Smith BPD-80 Installation Manual

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Page 1

Installation and Operating Manual

COMMERCIAL GAS WATER HEATERS

POWER DIRECT VENT GAS MODELS

WITH HOT SURFACE IGNITION

NOT FOR USE IN MANUFACTURED (MOBILE) HOMES

MODELS BPD-80 SERIES 210, 211

WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

- Do not store or use gasoline or other flammable 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 fire department.

- Installation and service must be performed by a qualified installer, service agency or the gas supplier.

• For Your Safety •

AN ODORANT IS ADDED TO THE GAS USED

BY THIS WATER HEATER.

ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE CONTACT THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.

KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE

WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.

1502 331603-000

Page 2

TABLE OF CONTENTS

SAFE INSTALLATION, USE AND SERVICE . . . . . . . . . . .3

GENERAL SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Qualiﬁ ed Installer Or Service Agency . . . . . . . . . . . . 6

Preparing For The Installation. . . . . . . . . . . . . . . . . . 6

INSTALLATION REQUIREMENTS FOR THE

COMMONWEALTH OF MASSACHUSETTS . . . . . . . . . . . 7

TYPICAL INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . 9

Get To Know Your Water Heater - Gas Models

(List Referencing Figures 1-5). . . . . . . . . . . . . . . . . . 9

Replacement Parts And Deliming Products . . . . . . 10

Combo Heating Inlet And Outlet Side Taps . . . . . . . 10

Water Piping - Mixing Valve Usage . . . . . . . . . . . . . .11

Mixing Valves

Water Heater Operation . . . . . . . . . . . . . . . . . . . . . 12

Electrical Requirements & Wiring Diagram . . . . . . . 13

SAFETY LOCKOUTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

High Limit Controls (Energy Cut Off). . . . . . . . . . . . 14

Thermostat/Water Temperature Blower High Limit Switch

Blower Air Pressure Switches . . . . . . . . . . . . . . . . . 14

LOCATING THE NEW WATER HEATER. . . . . . . . . . . . . 15

Facts To Consider About The Location . . . . . . . . . . 15

Clearances To Combustibles Floors With Carpeting Clearances For Servicing Important Notes and Warnings

Insulation Blankets . . . . . . . . . . . . . . . . . . . . . . . . . 17

Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 17

INSTALLING THE NEW WATER HEATER . . . . . . . . . . . 18

Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Space Heating And Potable Water Systems . . . . . . 18

Combo Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

System Requirements Installation

Closed Water Systems . . . . . . . . . . . . . . . . . . . . . . 20

Thermal Expansion . . . . . . . . . . . . . . . . . . . . . . . . . 20

Temperature-Pressure Relief Valve. . . . . . . . . . . . . 20

T&P Valve Discharge Pipe Requirements: Temperature-Pressure Relief Valve And

Pipe Insulation

High Altitude Installation . . . . . . . . . . . . . . . . . . . . . 22

Gas Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Sediment Traps. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Filling The Water Heater . . . . . . . . . . . . . . . . . . . . . 24

Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Termination Clearances (Sidewall) . . . . . . . . . . . . . 26

Side Wall Vent Terminal Installation Roof Vent Terminal Installation Concentric Vent Termination Kit Installation Multiple Concentric Vent Installations Vent Pipe Length Vent Pipe Termination Venting Terminations And Sizing Vent Screen Installation Vent Pipe Material

Vent Pipe Preparation . . . . . . . . . . . . . . . . . . . . . . . 30

Vent Pipe Installation Vent Pipe Runs Vent Terminal Installations

Blower Assembly Installation. . . . . . . . . . . . . . . . . . 33

Vent/Intake Pipe Connections To Blower/Air Duct Coupling Installations According To Vent Sizes

Sound Suppressor . . . . . . . . . . . . . . . . . . . . . . . . . 35

Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . 36

LIGHTING INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . 37

OPERATING THE TEMPERATURE

CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Gas Control Valve/Thermostat . . . . . . . . . . . . . . . . 39

FOR YOUR INFORMATION. . . . . . . . . . . . . . . . . . . . . . . 40

Start Up Conditions . . . . . . . . . . . . . . . . . . . . . . . . . 40

Condensate Smoke/Odor Strange Sounds

Operational Conditions . . . . . . . . . . . . . . . . . . . . . . 40

Smelly Water

“Air” In Hot-Water Faucets . . . . . . . . . . . . . . . . . . . 40

PERIODIC MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . 41

General Upkeep . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Venting System Inspection . . . . . . . . . . . . . . . . . . . 41

Burner Operation And Inspection . . . . . . . . . . . . . . 41

Combustion Chamber And Burner Cleaning. . . . . . 42

Housekeeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Temperature-Pressure Relief Valve Test . . . . . . . . . 42

Draining And Flushing. . . . . . . . . . . . . . . . . . . . . . . 43

To Drain The Water Heater Storage Tank: To Flush The Water Heater Storage Tank:

Anode Rod Maintenance. . . . . . . . . . . . . . . . . . . . . 44

LEAKAGE CHECKPOINTS . . . . . . . . . . . . . . . . . . . . . . . 45

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

REFERENCE PARTS LISTING . . . . . . . . . . . . . . . . . . . . 46

TROUBLESHOOTING GUIDELINES. . . . . . . . . . . . . . . . 48

Resetting The Heater Control . . . . . . . . . . . . . . . . . 48

Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Soft Lockout Hard Lockout

Ignition State And Timing . . . . . . . . . . . . . . . . . . . . 48

System Status And Error Codes . . . . . . . . . . . . . . . 49

Reading The LED Flash Sequence. . . . . . . . . . . . . 49

Corrective Actions . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Other Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

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SAFE INSTALLATION, USE AND SERVICE

Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very

important that the meaning of each safety message is understood by you and others who install, use or service this water heater.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

DANGER indicates an imminently

DANGER

WARNING

CAUTION

hazardous situation which, if not avoided, will result in death or injury.

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

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

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

All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message and how to avoid the risk of injury.

The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known to the State of California to cause cancer, birth defects or other reproductive harm and requires businesses to warn of potential exposure to such substances.

This product contains a chemical known to the State of California to cause cancer, birth defects or other reproductive harm. This appliance can cause low level exposure to some of the substances listed in the Act.

This product is certiﬁ ed to comply with a maximum weighted average of 0.25% lead content as required in some areas.

IMPORTANT DEFINITIONS

Qualiﬁ ed Installer: A qualiﬁ ed installer must have ability equivalent to a licensed tradesman in the ﬁ elds of plumbing, air supply, venting and gas supply, including a thorough understanding of the requirements of the “National Fuel Gas Code”, ANSI Z223.1/NFPA 54 as it relates to the installation of gas ﬁ red water heaters. The qualiﬁ ed installer must also be familiar with the design features and use of ﬂ ammable vapor ignition resistant water heaters and have a thorough understanding of this Installation and Operating manual.

Service Agency: A service agency also must have ability equivalent to a licensed tradesman in the ﬁ elds of plumbing, air supply, venting and gas supply, including a thorough understanding of the requirements of the “National Fuel Gas Code”, ANSI Z223.1/NFPA 54 as it relates to the installation of gas ﬁ red water heaters. The service agency must also have a thorough understanding of this Installation and Operating manual, and be able to perform repairs strictly in accordance with the service guidelines provided by the manufacturer.

Gas Supplier: The Natural Gas or Propane Utility or service who supplies gas for utilization by the gas burning appliances within this application. The gas supplier typically has responsibility for the inspection and code approval of gas piping up to and including the Natural Gas meter or Propane storage tank of a building. Many gas suppliers also offer service and inspection of appliances within the building.

Page 4

DANGER

GENERAL SAFETY

Water temperature over 125°F can cause severe burns instantly resulting in severe injury or death.

HOT

BURN

Children, the elderly and the disabled and are at highest risk of scald injury.

Feel water before bathing or showering.

Temperature limiting valves are available.

Read instruction manual for safe temperature setting.

WARNING

Fire or Explosion Hazard

• Do not store or use gasoline or other flammable

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

• Avoid all ignition sources if you smell gas.

• Do not expose water heater control to excessive

gas pressure.

• Use only gas shown on rating plate.

• Maintain required clearances to combustibles.

• Keep ignition sources away from faucets after

extended period of non-use.

Read instruction manual before

installing, using or servicing

water heater.

Page 5

GENERAL SAFETY

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Install vent system in accordance with codes.

• Do not operate water heater if flood damaged.

• For operation above 10,100’, a high altitude orifice must be installed.

• Do not operate if soot buildup is present.

• Do not obstruct water heater air intake with insulating jacket.

• Do not obstruct blower air intake.

• Do not place chemical vapor emitting products near water heater.

• Gas and carbon monoxide detectors are available.

• No vent damper installation is compatible with this power vented water heater.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

DANGER

FLAMMBLE

Vapors from flammable liquids may explode and catch fire causing death or severe burns.

Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater.

Keep flammable products:

1. far away from heater,

2. in approved containers,

3. tightly closed and

4. out of children's reach.

Installation: Do not install the water heater where flammable products will be stored or used.

Flammable Vapors

Water heater has a main burner and hot surface igniter. The hot surface igniter:

1. can be triggered at any time and

2. the hot surface will ignite flammable vapors.

Vapors:

1. cannot be seen,

2. are heavier than air,

3. go a long way on the floor and

4. can be carried from other rooms to the the electodes by air currents.

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INTRODUCTION

Thank You for purchasing this water heater. Properly

installed and maintained, it should give you years of trouble free service.

Abbreviations found in this Installation and Operating manual:

• CSA - Canadian Standards Association

• ANSI - American National Standards Institute

• NFPA - National Fire Protection Association

• ASME - American Society of Mechanical Engineers

• UL - Underwriters Laboratories Inc.

• AHRI - Air Conditioning, Heating and Refrigeration

Institute.

This gas-ﬁ red water heater is design certiﬁ ed by CSA International, under Water Heater Standard ANSI

Z21.10.3 • CSA 4.3 (current edition), as applicable.

QUALIFIED INSTALLER OR SERVICE AGENCY

Installation and service of this water heater requires ability equivalent to that of a Qualiﬁ ed Agency (as deﬁ ned by ANSI below) in the ﬁ eld involved. Installation skills such as plumbing, air supply, venting, gas supply and electrical supply are required in addition to electrical testing skills when performing service.

ANSI Z223.1 2006 Sec. 3.3.83: “Qualiﬁ ed Agency” - “Any individual, ﬁ rm, corporation or company that either in person or through a representative is engaged in and is responsible for (a) the installation, testing or replacement of gas piping or (b) the connection, installation, testing, repair or servicing of appliances and equipment; that is experienced in such work; that is familiar with all precautions required and that has complied with all the requirements of the authority having jurisdiction.”

If you are not qualiﬁ ed (as deﬁ ned by ANSI above) and licensed or certified as required by authority having jurisdiction to perform a given task, do not attempt to perform any of the procedures described in this manual. If you do not understand the instructions given in this manual do not attempt to perform any procedures outlined in this manual.

PREPARING FOR THE INSTALLATION

1. Read the “General Safety” section of this manual ﬁ rst and then entire manual carefully. If you don’t follow safety rules, the water heater will not operate properly. It could cause DEATH, SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE. This manual contains instructions for installation, operation, and maintenance of the gas-ﬁ red water heater. It also contains warnings throughout the manual that you must read and be aware of. All warnings and instructions are essential to proper operation of the water heater and your safety. Since we cannot put

everything on the ﬁ rst few pages, READ ENTIRE MANUAL BEFORE ATTEMPTING TO INSTALL OR OPERATE THE WATER HEATER. The installation must conform with these instructions and local code authority having jurisdiction. In absence of local codes, installation must comply with current editions of the

“National Fuel Gas Code”, ANSI Z223.1/NFPA 54 and “National Electrical Code”, NFPA 70. All

documents are available from:

CSA International, 8501 East Pleasant Valley Road, Cleveland, Ohio, United States 44131-5575.

NFPA documents are also available from: National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269.

2. The water heater, when installed, must be electrically grounded in accordance with the local codes or in the absence of local codes: current edition of the “National Electrical Code”, NFPA 70.

3. If after reading this manual you have any questions or do not understand any portion of the instructions, call the local gas utility or the manufacturer whose name appears on the rating plate.

4. Carefully plan the place where you are going to put the water heater. Correct combustion, vent action, and vent pipe installation are very important in preventing death from possible carbon monoxide poisoning and ﬁ res (see Figure 12). Examine the location to ensure the water heater complies with the “Locating The New Water Heater” section in this manual.

5. For installation in areas subject to earthquakes, this water heater must be braced, anchored, or strapped to avoid falling or moving during an earthquake. See instructions for correct installation procedures. Instructions may be obtained from:

California Ofﬁ ce of the State Architect, 400 P Street, Sacramento, CA 95814.

6. Massachusetts Code requires this water heater to be installed In accordance with Massachusetts 248-CMR

2.00: State Plumbing Code and 248-CMR 5.00.

7. Complies with California Health and Safety code 116875 (known as AB-1953) and with weighted average maximum of 0.25% lead.

Page 7

INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS

COMMONWEALTH OF MASSACHUSETTS For all side wall terminated, horizontally vented power vent, direct vent and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above ﬁ nished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisﬁ ed:

INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasﬁ tter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the ﬂ oor level where the gas equipment is to be installed. In addition, the installing plumber or gasﬁ tter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the sidewall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualiﬁ ed licensed professionals for the installation of hard wired carbon monoxide detectors. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent ﬂ oor level. In the event that the requirements of this subdivision can not 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 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 720 and be ANSI/ UL 2034 listed and CSA certiﬁ ed.

SIGNAGE A metal or plastic identiﬁ cation plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one- half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.”

INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.

EXEMPTIONS The following equipment is exempt from 248 CMR 5.08(2) (a) 1 through 4:

1. The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current edition of NFPA 54 as adopted by the Board; and

2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building, or structure used in whole or in part for residential purposes.

MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall include:

1. Detailed instructions for the installation of the venting system design or the venting system components; and

2. A complete parts list for the venting system design or venting system.

MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED When the manufacturer of Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the ﬂ ue gases, but identiﬁ es “special venting systems,” the following requirements shall be satisﬁ ed by the manufacturer:

1. The referenced “special venting system” instructions shall be included with the appliance or equipment installation instructions; and

2. The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall include a parts list and detailed installation instructions.

A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.

Page 8

INSTALLATION GRAPHIC: GAS-FIRED POTABLE WATER HEATING/SPACE HEATING SYSTEM

• If your water heater will be installed in the Commonwealth of Massachusetts, refer to the following

graphic during installation and during modifications to the water supply system.

COMBINATION SPACE HEATING / POTABLE WATER HEATING SYSTEM

TEMPERED WATER TO FIXTURES (MUST MEET TEMPS LISTED IN MASS. CODE 248 CMR

MUST BE VERTICAL TO REMOVE A

MIXING VALVE (MUST BE INSTALLED BELOW TOP OF WATER HEATER AS PER MANUFACTURER’S RECOMMENDATIONS)

WATER HEATER ACCEPTED BY THE BOARD FOR INSTALLATION IN MASSACHUSETTS.

MASSACHUSETTS INSTALLATION REQUIREMENTS:

1.) CONNECT ELECTRONICALLY-CONTROLLED TIMER TO AN ALL-BRONZE PUMP. PUMP MUST ACTIVATE EVERY 6 HOURS

2.) ALL WATER PIPING MUST BE INSTALLED AND INSULATED IN ACCORDANCE WITH MASSACHUSETTS CODE (248 CMR

3.) PIPING LOOP BETWEEN WATER HEATER AND AIR HANDLER MUST BE INSTALLED IN COMPLIANCE WITH 248 CMR.

† REQUIRED FOR MASSACHUSETTS.

‡ PIPING FROM THE TOP OF THE WATER HEATER WITH TEES IS ACCEPTABLE.

IR BUBBLES

FOR 60 SECONDS. TURN PUMP TIMER OFF BEFORE CLOSING PIPING LOOP SHUT-OFF VALVE.

& 780 CMR).

†

)

†

TYPICAL MIXING VALVE INSTALLATION

EXPANSION TANK

CHECK

VALVE

UNION

HOT

WATER

OUT

VACUUM

†

RELIEF VALVE

UNION

TEMP/ PRESSURE RELIEF VALV E

SEE NOTE ‡

100’-0” MAXIMUM DISTANCE FROM WATER HEATER TO FAN COIL AND BACK. (DEVELOPED LENGTH) NOT INCLUDING COIL

CHECK VALVE

(1/8” HOLE

DRILLED IN CLAPPER)

PUMP

AIR

HANDLER

SHUT-OFF

VALV E

IN HEATING UNIT

COLD WATER INLET

†

FLOW CONTROL

OUT

COIL

AIR

HANDLER

†

SHUT-OFF

VALVE

Page 9

TYPICAL INSTALLATION

GET TO KNOW YOUR WATER HEATER - GAS MODELS (LIST REFERENCING FIGURES 1-5)

1 Termination Elbow with Rodent

Screen 2 *Vent Pipe 3 *Coupling (if required) 4 CPVC Vent Pipe ( 5 ft. supplied) 5 *Vent Pipe Elbow (long radius) 6 *CPVC Vent Pipe Elbow 7 *Union (Di-electric water connection) 8 Cold-Water Inlet Nipple/Diptube 9 **Combo Heating System Supply

Outlet (Optional) 10 T&P Valve 11 * Discharge Pipe 12 **Combo Heating System Return

Inlet (Optional) 13 Gas Control Valve/Thermostat

(Honeywell) 14 Gas Valve Electronic Control Module

And Cover (Honeywell) 15 Drain Valve 16 Outer Gas Door 17 Manifold Door Assembly (behind

outer door) (see Figure 3)

3 4

18 *Metal Drain Pan 19 *Floor Drain 20 Flexible Manifold Tube (see

Figure 3) 21 ***Control Harness 22 *Sediment Trap 23 *Ground Joint Union (gas

connection) 24 *Main Manual Gas Shut-off Valve 25 *Gas Supply* 26 Anode (under cap) 27 Bafﬂ e Assembly 28 Hot-Water Outlet Nipple/Anode 29 Sound Suppressor (Tee ﬁ tting) 30 *Inlet Water Shut-off Valve 31 ****Rubber Coupling (see Figure 4) 32 Gear Clamp (see Figure 4) 33 ***Blower with Power Cord (see

Figure 4) 34 Air Duct Adapter 35 Air Inlet Snorkel 36 Air Duct 37 *Thermal Expansion Tank (see

“Closed Water Systems” and

“Thermal Expansion” sections) 38 Flame Sensor Rod (see Figure 3) 39 Sheet Metal Burner (see Figure 3)

40 Gas Oriﬁ ce (see Figure 3) 41 Gas Manifold (see Figure 3) 42 Hot-Surface Igniter (see Figure 3) 43 Manifold Door Gasket (see

Figure 3) 44 Manifold Door (see Figure 3) 45 Two Piece Grommet With Clip (see

Figure 3) 46 Viewport (see Figure 3) 47 Air Tubing (Intake) (see Figure 4) 48 Blower High Limit Switch (see

Figure 4) 49 Intake Air Pressure Switch (NC)

(inside box) (see Figure 4) 50 Capacitor (see Figure 4) 51 Air Tubing (Exhaust) (see Figure 4) 52 Exhaust Air Pressure Switch (NO)

(inside box) (see Figure 4) *, **, ***, **** see notes on following

page

AIR INLET PIPING

EXHAUST OUTLET

PIPING

13 14

16 17

Front View

Figure 1 Figure 2

1920

Rear View

Page 10

Natural gas and Propane (LP) main burner with igniter assembly. NG burner shown. LP burner similar but with drain hole (item 17 in Figure 1).

Flare Nut

††

Figure 3

REPLACEMENT PARTS AND DELIMING PRODUCTS

Replacement parts and recommended delimer may be ordered through authorized servicers or distributors. When ordering parts, provide complete model and serial numbers (see rating plate), quantity and name of part desired. Standard hardware items may be purchased locally.

COMBO HEATING INLET AND OUTLET SIDE TAPS

Models equipped with Combo Heating capabilities are shipped with the two side plumbing taps OPEN (item 9 and item 12 in Figure 1 and see also Figure 6 & Figure 19). If the heater is to be operated without using the side taps these openings must be plugged with the two pipe plugs supplied with the heaters.

Shown with Junction Box Cover removed for clarity.

Vacuum relief valve install per local codes (not supplied with heater).

Figure 4

Figure 5

Notes:

* Items not supplied with the water heater. ** The side recirculation loop connections may not be

used as the primary water inlet and outlet connections. See “Combo Heating Inlet And Outlet Side Taps”

below. *** Caution harness has 120 VAC In operation. **** See “Vent Pipe Installation” for more information.

Page 11

WATER PIPING - MIXING VALVE USAGE

Mixing Valves

Water temperature over

DANGER

125°F can cause severe burns instantly resulting in severe injury or death.

Children, the elderly and the disabled and are at highest risk of scald injury.

Feel water before bathing or showering.

Temperature limiting devices

HOT

such as mixing must be installed when required by codes and to ensure safe

BURN

temperatures at fixtures.

Water heated to a temperature which satisﬁ es space heating, clothes washing, dish washing, and other sanitizing needs can scald and cause permanent injury upon contact. Short repeated heating cycles caused by small hot-water uses can cause a temperature increase of the hot water by 20F° higher than the heater’s temperature settings.

TEMPERED POTABLE WATER

MIXING

VALV E

TEMPERATUREPRESSURE RELIEF VALVE

SUGGESTED PIPING ARRANGEMENT

FOR TOP CONNECTIONS

SHUT-OFF

VALV E

COLD-WATER

INLET

This appliance has been design certiﬁ ed as complying with ANSI/CSA Standard for water heaters and is considered suitable for combination Water (Potable) Heating and Space Heating but not space heating only applications.

The water supply pressure should not exceed 80 psi. If this occurs, a pressure reducing valve with a bypass should be installed in the cold water inlet line. This should be placed on the supply to the entire house in order to maintain equal hot and cold water pressures.

TEMPERED

POTABLE WATER

NON-TEMPERED

WATER SUPPLY

SUGGESTED PIPING

ARRANGEMENT FOR

TOP CONNECTIONS

TEMPERATUREPRESSURE RELIEF VALVE

DISCHARGE PIPE (DO NOT CAP OR PLUG)

* NOTE: THE

T&P VALVE

DISCHARGE PIPE

SHALL BE PIPED

DIRECTLY TO

THE DRAIN OR

EXTERNAL TO

THE BUILDING

SHUT-OFF

VALV E

COLD-WATER

INLET

NON-TEMPERED

WATER RETURN

MIXING VALVE

METAL DRAIN

PAN 1.75 in.

MAX. DEPTH.

AT LEAST 2

in. GREATER

THAN THE

DIAMETER OF

THE WATER

HEATER.

DISCHARGE PIPE (DO NOT CAP OR PLUG)

* NOTE: THE

T&P VALVE

DISCHARGE

PIPE SHALL

BE PIPED

DIRECTLY TO

THE DRAIN

OR EXTERNAL

TO THE

BUILDING

DRAIN VALV E

MASSACHUSETTS: INSTALL A VACUUM RELIEF IN COLD WATER LINE PER SECTION 19 MGL 142.

CERTAIN MODELS

ARE EQUIPPED WITH

SIDE PLUMBING

CONNECTIONS FOR

SPACE HEATING.

METAL DRAIN PAN

1.75 in. MAX. DEPTH. AT LEAST 2 in.

GREATER THAN THE

DIAMETER OF THE

WATER HEATER.

6 in. MAX. AIR GAP*

Figure 6

DRAIN VALV E

6 in. MAX. AIR GAP*

MASSACHUSETTS: INSTALL A VACUUM RELIEF IN COLD WATER LINE PER SECTION 19 MGL 142.

Figure 7

TEMPERED

POTABLE

WATER

NON-

TEMPERED

WATER

SUPPLY

TO HOT

OUTLET

SHUT-OFF

MIXING

VALV E

NON-

TEMPERED

WATER

RETURN

TO COLD

Figure 8

COLD-

WATER

SUPPLY

INLET

Page 12

Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the inﬁ rm and the physically/mentally disabled. Table 1 (published by U.S. Government Memorandum,

1978) shows the approximate time-to-burn relationship for normal adult skin. If anyone using hot water provided by the water heater being installed ﬁ ts into one of these groups or if there is a local code or state law requiring a certain water temperature at the point of use, then special precautions must be taken.

Water

Temperature

°F

Time for 1st

Degree Burns

(Less Severe Burns)

110 (normal shower temp.)

116 (pain threshold)

116 35 minutes 45 minutes

122 1 minute 5 minutes

131 5 seconds 25 seconds

140 2 seconds 5 seconds

149 1 second 2 seconds

154 instantaneous 1 seconds

(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15,1978)

Time for Permanent

Burns 2nd & 3rd

Degree (Most

Severe Burns)

Table 1

In addition to using lowest possible temperature setting that satisﬁ es demand of application, a mixing valve should be installed at water heater (see Figure 6 & Figure 7) or at hot-water taps to further reduce system water temperature. Mixing valves are available at plumbing supply stores. Consult a Qualiﬁ ed Installer or Service Agency. Follow mixing valve manufacturer’s instructions for installation of the valves. Before changing the factory setting on the thermostat, read the “Operating The Temperature Control System” section in this manual.

WATER HEATER OPERATION

Figure 9 shows the water heater’s sequence of operation when a call for heat is initiated. The ignition control module will attempt to light the burner three times. If the ignition control does not detect ignition it will enter lockout mode and ﬂ ash the corresponding error code.

HEATER

THERMOSTAT

CALLS FOR

HEAT

HEATER CONTROL

CHECKS TO ENSURE

BLOWER EXHAUST

PRESSURE SWITCH IS

OPEN

BLOWER IS

ENERGIZED

CONTROL CHECKS

TO ENSURE: EXHAUST PRESSURE SWITCH CLOSES AND

INTAKE PRESSURE

SWITCH REMAINS

CLOSED INDICATING

BLOWER IS

OPERATING AND

THERE ARE NO

BLOCKAGES (INTAKE

OR EXHAUST)

TEMPERATURE

SWITCH REMAINS CLOSED INDICATING VENT TEMPERATURE

IS NOT ABOVE THE

ALLOWABLE LIMIT

IGNITER IS ENERGIZED

AND GAS VALVE IS

OPENED

BURNER COMES ON

AND THE FLAME IS

SENSED BY CONTROL

BURNER CONTINUES

UNTILL THE WATER IN

THE TANK REACHES

THERMOSTAT SETTING

GAS VALVE IS CLOSED

AND BURNER SHUTS

OFF

BLOWER CONTINUES

FOR A POST PURGE

TIME

HEATER

REMAINS ON STANDBY UNTIL NEXT CALL FOR

HEAT

Figure 9

Page 13

ELECTRICAL REQUIREMENTS & WIRING DIAGRAM

WARNING

Electric Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before operating.

Failure to do so can result in death or electrical shock.

Before plugging in the water heater, always make sure:

• The voltage and frequency correspond to that

speciﬁ ed on the water heater wiring diagram.

• The electrical outlet has the proper overload fuse or

breaker protection.

1. The unit must be connected to a 120VAC power supply. A dedicated power circuit is preferred.

2. The water heater must be properly grounded.

3. This water heater is a polarity sensitive appliance and will not operate if the power supply polarity is reversed.

Note: Always reference the wiring diagram for the correct electrical connections.

After making all electrical connections, completely ﬁ ll the tank with water and check all connections for leaks. Open the nearest hot-water faucet and let it run for 3 minutes to purge the water lines of air and sediment and to ensure complete ﬁ lling of the tank. The electrical power may then be turned on. Verify proper operation after servicing. See also “Installation Checklist”.

CAUTION:

LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER SERVICING. POWER VENT WIRING SCHEMATIC.

NOTE: REFER TO THE “Installation Checklist” BEFORE OPERATING THIS HEATER.

EARTH GND

CAPACITOR

BLOWER

FLAME SENSOR

HOT SURFACE IGNITER

PRESSURE SWITCH (CLOSED)

PRESSURE SWITCH (OPEN)

PRESSURE SWITCH (CLOSED)

HIGH LIMIT SWITCH (CLOSED)

Circled numbers indicate sequence of operation.

Figure 11

IF WIRING HAS TO BE REPLACED IN THE FIELD, USE ONLY TYPE TEW 105°C WIRE.

ELECTRICAL RATING 120V, 5A, 60 HZ.

HONEYWELL GAS VALVE

YELLOW

WHITE

BLUE

BLACK

GREEN

IGNITER - FLAME ROD ASSEMBLY

PRESSURE

SWITCH

YELLOW

BLUE

(NO)

BLACK SMOOTH - LINE

BLACK RIBBED - NEUTRAL

BLACK MIDDLE - GND

JUNCTION BOX

PRESSURE

SWITCH

(NC)

CAPACITOR

HIGH LIMIT

BLACK

BLACK WHITE

GREEN

120Vac/60Hz Wall Plug

SWITCH

BLOWER

Figure 10

Page 14

SAFETY LOCKOUTS

This water heater has several lockout features designed to prevent the heater from operating in unsafe conditions.

HIGH LIMIT CONTROLS (ENERGY CUT OFF)

Thermostat/Water Temperature

This feature is a part of the gas control valve/thermostat (see Figure 1, item 12) and limits the maximum water temperature. In the event of the water overheating, this safety feature shuts off the fuel supply to the burner.

Blower High Limit Switch

This device is located on the blower (see Figure 4, item

48) and limits the maximum temperature of the blower. If the blower temperature rises above the temperature setting, the switch opens causing the heater to shut down. The switch will auto reset once the temperature drops sufﬁ ciently.

BLOWER AIR PRESSURE SWITCHES

The blower/heater is equipped with two air pressure switches located in the junction box (see Figure 4, item 49 and item 52). These devices are connected in series and monitor the air pressure produced by the blower. In the event that the exhaust venting becomes blocked or sufﬁ ciently restricted, the normally open (NO) air pressure switch will shut down the heater. In the event that the intake pipe becomes sufﬁ ciently blocked or restricted, the normally closed (NC) air pressure switch will shut down the heater.

Page 15

LOCATING THE NEW WATER HEATER

FACTS TO CONSIDER ABOUT THE LOCATION

Carefully choose an indoor location for the new water heater because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. This water heater is not for use in manufactured (mobile) homes or outdoor installation. Whether replacing an old water heater or putting the water heater in a new location, the following critical points must be observed:

1. Select a location indoors as close as practical to the vent termination or location to which the water heater vent piping is going to be connected, and as centralized with the water piping system as possible.

2. Selected location must provide adequate clearances for servicing and proper operation of the water heater.

3. Avoid locations that could cause the water heater to freeze from outside air.

4. Selected location must provide access to a properly grounded electrical branch circuit. A dedicated circuit is preferred. Do not use a GFI outlet.

5. Avoid locations that expose the water heater to direct sunlight.

6. Keep combustibles such as boxes, magazines, clothes, etc., away from the water heater area.

Important: Do not use an extension cord to connect the water heater to an electrical outlet.

CAUTION

• Sensors mounted in the metal drain pan that trigger an

alarm or turn off the incoming water to the water heater when leakage is detected.

• Sensors mounted in the metal drain pan that turn off

the water supply to the entire building when water is detected in the metal drain pan.

• Water supply shut-off devices that activate based on

the water pressure differential between the cold-water and hot-water pipes connected to the water heater.

• Devices that will turn off the gas supply to a gas water

heater while at the same time shutting off its water supply.

WARNING

Fire or Explosion Hazard

• Do not store or use gasoline or other flammable vapors and

liquids in the vicinity of this or any other appliance.

• Avoid all ignition sources if you smell gas.

• Do not expose water heater control to excessive gas

pressure.

• Use only gas shown on rating plate.

• Maintain required clearances to combustibles.

• Keep ignition sources away from faucets after extended

period of non-use.

Read instruction manual before

installing, using or servicing

water heater.

Property Damage Hazard

• All water heaters eventually leak.

• Do not install without adequate drainage.

Installation of the water heater must be accomplished in such a manner that if the tank or any connections should leak, the ﬂ ow of water will not cause damage to the structure. For this reason it is not advisable to install the water heater in an attic or upper ﬂ oor. In all cases, a metal drain pan should be installed under the water heater. Metal drain pans are available at your local hardware store. Such a metal drain pan must have a clearance of at least 1 in. greater than any point on the water heater’s outer jacket and must be piped to an adequate drain. The pan must have a maximum depth of 1.75 in. . Water heater life depends upon water quality, water pressure and the environment in which the water heater is installed. Water heaters are sometimes installed in locations where leakage may result in property damage, even with the use of a metal drain pan piped to a drain. However, unanticipated damage can be reduced or prevented by a leak detector or water shut-off device used in conjunction with a piped metal drain pan. These devices are available from some plumbing supply wholesalers and retailers, and detect and react to leakage in various ways:

WARNING

FLAMMABLES

FIRE AND EXPLOSION HAZARD

Can result in serious injury or death

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Storage or use of gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance can result in serious injury or death.

Flammable Vapors

WARNING

Fire Hazard

For continued protection against risk of fire:

• Do not install water heater on carpeted floor.

• Do not operate water heater if flood damaged.

Page 16

Clearances To Combustibles

Minimum clearances between water heater and combustibles are 0 in. at the sides and rear, 5.5 in. from the front and 12 in. from top (standard clearance.) If clearances stated on the heater differ from standard clearances, install water heater according to clearances stated on the heater (see Figure 12).

Floors With Carpeting

This water heater must not be installed directly on carpeting. Carpeting must be protected by a metal or wood panel beneath the appliance extending beyond the full width and depth of the appliance by at least 3 in. in every direction, or if the appliance is installed in an alcove or closet, the entire ﬂ oor must be covered by the panel. Failure to heed this warning may result in a ﬁ re hazard.

Clearances For Servicing

When installing the heater, consideration must be given to proper location. Location selected should be as close to the wall as practicable and as centralized with the water piping system as possible.

Servicing this appliance, such as changing the anodes, etc. requires clearances for accessibility and replacement of parts. The anode could be as long as 35 in. .

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Flue gases may escape if vent pipe is deformed, broken, or not properly connected.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

Refer to the current edition of the “National Fuel Gas Code”, ANSI Z223.1/NFPA 54 for detailed requirements.

0in. MIN.

TOP VIEW

OF CLOSET

WITHOUT DOOR

0 in.

MIN.

5.5 in. MIN.

TOP VIEW OF

CLOSET WITH

DOOR

0 in. MIN.

Figure 12

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Install water heater in accordance with the instruction manual and NFPA 54.

• To avoid injury, combustion and ventilation air must be taken from outdoors.

• Do not place chemical vapor emitting products near water heater.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

Page 17

Important Notes and Warnings

• This heater is certiﬁ ed to be installed using Schedule

40 PVC or CPVC or polypropylene plastic vent material. Only use approved material. All venting material and components must be joined with the approved primer/ cleaner and solvent cement or mechanical seals. To join PVC and CPVC materials, use ATSM F-493 compliant cement.

• Do not common vent this heater with any other

appliance.

• During operation the plastic piping will expand as it

heats up and contract as it cools down. This is normal for this type of venting. Rigidly fastening the vent piping can cause undue stress that may result in the cracking or fracturing the vent piping material. A fracture of the venting pipe may pose a serious safety hazard. To prevent stressing of the vent system, all hangers and supports must allow the vent piping freedom to move.

• Use long sweep elbows wherever possible. Closely

coupled elbows and short radius elbows can reduce the venting capacity.

• All power vented water heaters generate a certain

amount of operational noise. In order to minimize noise transmission to the support structure, it is recommended to use isolation pads between the pipe hangers and the vent pipe.

• Most power vent installations develop some

condensation in the vent piping. When using long runs of venting or when the venting passes through cold or unheated areas, considerable amounts of condensate from the ﬂ ue gases can develop. Provision must be made for the condensate to drain freely from the system or to be collected in a condensate trap(s) that can be drained. Damage or fracture of the vent piping may occur if the condensate is allowed to collect and freeze. Pooling of condensate can restrict airﬂ ow and can cause nuisance failures of the system.

Keep it on the side of the water heater or nearby for future reference.

• Do obtain new warning and instruction labels from the

manufacturer for placement on the blanket directly over the existing labels.

• Do inspect the insulation blanket frequently to make

certain it does not sag, thereby obstructing combustion air ﬂ ow.

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Do not obstruct water heater air intake(s) with insulating jacket.

• Gas and carbcn monoxide detectors are available.

• Install water heater in accordance with the instruction manual and NFPA54.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

AIR REQUIREMENTS

For safe operation an adequate supply of fresh, uncontaminated air for combustion, dilution and ventilation must be provided. Note: Contaminated or dusty air may cause build-up on the blower wheel resulting in nuisance shut downs.

INSULATION BLANKETS

Insulation blankets are available to the general public for external use on gas water heaters but are not necessary with these products. The purpose of an insulation blanket is to reduce standby heat loss encountered with storage tank heaters. Your water heater meets or exceeds the current standards with respect to insulation and standby loss requirements, making an insulation blanket unnecessary. Should you choose to apply an insulation blanket to this heater, you should follow these instructions (For identification of components mentioned below, see Figure 1 thru Figure 5). Failure to follow these instructions will restrict the air ﬂ ow required for proper combustion and dilution, potentially resulting in ﬁ re, asphyxiation, serious personal injury or death.

• Do not apply insulation to the top of the water heater,

as this will interfere with safe operation of the blower assembly.

• Do not cover the outer door, thermostat or T&P relief

valve.

• Do not cover the “Installation And Operating manual”.

Page 18

INSTALLING THE NEW WATER HEATER

WATER PIPING

Water temperature over

DANGER

HOT

BURN

HOT WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, cleaning and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the inﬁ rm, or physically/ mentally handicapped. If anyone using hot water ﬁ ts into one of these groups or if there is a local code or state law requiring certain temperature water at the hot-water tap, then you must take special precautions. In addition to using lowest possible temperature setting that satisﬁ es your hot water needs, a means such as a mixing valve, should be used at hot-water taps used by these people or at the water heater (see Figure 6 & Figure 7). Valves for reducing point of use temperature by mixing cold and hot water are also available.

SPACE HEATING AND POTABLE WATER SYSTEMS

This appliance has been design certiﬁ ed as complying with ANSI/CSA Standard for water heaters and is suitable for combination water (potable) heating and space heating but not space heating only applications.

125°F can cause severe burns instantly resulting in severe injury or death.

Children, the elderly and the disabled and are at highest risk of scald injury.

Feel water before bathing or showering.

Temperature limiting devices such as mixing must be installed when required by codes and to ensure safe temperatures at fixtures.

WARNING

Before changing the factory setting on thermostat, read “Operating The Temperature Control System” section in this manual.

• This water heater should not be connected to any

heating systems or components previously used with a non-potable water heating appliance.

• All piping components connected to this unit for space

heating applications should be suitable for use with potable water.

• Toxic chemicals, such as those used for boiler treatment

shall not be introduced into the potable water used for space heating.

• When the system requires water for space heating at

temperatures higher than required for domestic water purposes, a mixing valve must be installed. Please refer to Figure 6 & Figure 7 for suggested piping

arrangement. Note: Water piping and vent piping occupy the space above the water heater. Plan the water piping to ensure it does not cause interference with the vent piping. If this water heater is to be used to supply both space heating and potable water, the instructions listed below must be followed:

• Be sure to follow the manual(s) shipped with the air

handler or other type heating system.

• This water heater is not to be used as a replacement

for an existing boiler installation.

• Do not use with piping that has been treated with

chromates, boiler seal or other chemicals and do not

add any chemicals to the water heater piping.

• If the space heating system requires water temperatures

in excess of 120°F , steps must be taken to limit

temperatures at ﬁ xtures in the potable hot-water supply

for safety and regulatory requirements.

• Pumps, valves, piping and ﬁ ttings must be compatible

with potable water.

• A properly installed ﬂ ow control valve is required to

prevent thermosiphoning. Thermosiphoning is the

result of a continuous ﬂ ow of water through the air

handler circuit during the off cycle. Weeping (blow off)

of the temperature-pressure relief valve (T&P) or higher

than normal water temperatures are the ﬁ rst signs of

thermosiphoning.

• The hot-water line from the water heater should be

vertical past any mixing valve or supply line to the

heating system to remove air bubbles from the system.

• Do not connect the water heater to any system or

components previously used with non-potable water

heating appliances when used to supply potable water.

Toxic Chemical Hazard

• Do not connect to non-potable water system.

Consult a Qualiﬁ ed Installer or Service Agency. Follow manufacturer’s instructions for installation of valves.

Page 19

COMBO HEATING

This section serves as a guide for the installation and use of “Combo” heating systems utilizing a domestic water heater that has been speciﬁ cally approved for such use. It is written for those knowledgeable in the required trades and professionals involved in the design and installation of Combo Heating Systems. It is the responsibility of the installer/designer to follow all applicable codes to ensure the effectiveness and safety of the installation.

System Requirements

The following requirements must be met for the installation of Combo Heating Systems:

1. All components used for the distribution of water in the heating loop must be suitable for potable water. These include all piping, ﬁ ttings, solder and ﬂ uxes, pumps for circulation of water, valves, etc.

2. The water heater must not be connected to a hydronic heating system that has been used previously.

3. No boiler treatment chemicals of any kind shall be introduced into the system.

4. The Combo System components must be selected and sized to meet and maintain the total calculated demands for both domestic service hot water and space heating requirement. The sizing and installation must be performed in accordance with good engineering practice such as “ASHRAE

Handbooks”, HRAI’s Uniﬁ ed Combo Guidelines, “Hydronics Institute Manuals”, ANSI Z223.1, CSA F280, National/Provincial Building Codes, ANSI

and/or codes having jurisdiction.

5. The air handler (fan coil) and/or the circulating pump in a baseboard hydronic loop will require a dedicated 120V circuit. This must be provided and identiﬁ ed for this purpose.

6. All piping between the water heater and the air handler or hydronic baseboard loop must be adequately insulated to reduce heat loss.

7. If the local jurisdiction requires a back-ﬂ ow preventer in the cold water line, an expansion tank of adequate size must be installed.

8. “Combo” Heating Systems require higher water temperatures than other applications. When the system is used to supply water for Combo Heating applications, a means, such as mixing valve, must be installed to temper the water in order to reduce scald hazard potential (see Figure 13 & Figure 14).

Installation

The heating mode may be one of the following options: A. A fan coil/air handler (Figure 13). B. A hydronic baseboard (finned tube) loop/In floor

heating (Figure 14).

The following is a list of requirements for the installation of option A or B.

1. Install shut-off valves and unions so that the water heater can be isolated from the heating module should servicing of the water heater become necessary.

2. Install a drain valve at the lowest point of the heating loop so that water can be drained from the heating module without affecting the water heater.

3. If the air handler does not have a venting means at the highest point of the piping arrangement, install an air bleed at the highest point of the plumbing arrangement.

HOT WATER

TO HOUSE

FIXTURE

MIXING

VALV E

HOT

OUTLET

EXPANSION TANK (OPTIONAL)

WATER

HEATER

COLD SUPPLY

code requirements

CHECK VALVE (IF USED REQUIRES EXPANSION TANK)

CHECK

COLD INLET

AIR

HANDLER

VALV E

FLOW CONTROL

HOSE BIB

(OPTIONAL)

SUPPLY

(see also

Massachusetts

on pg 8)

EXTERNAL CIRCULATOR

RETURN

DRAIN/ PURGE VALV E

INTERNAL

CIRCULATOR

Figure 13

HOT WATER

TO HOUSE

FIXTURE

MIXING

VALV E

HOT

OUTLET

EXPANSION TANK (OPTIONAL)

WATER

HEATER

COLD SUPPLY

code requirements

CHECK VALVE (IF USED REQUIRES EXPANSION TANK)

CHECK

COLD INLET

VALV E

FLOW CONTROL

HOSE BIB

(OPTIONAL)

SUPPLY

(see also

Massachusetts

on pg 8)

EXTERNAL CIRCULATOR

RETURN

HYDRONIC

BASEBOARDS

(SERIES

CONNECTED

SHOWN)

Figure 14

Page 20

CLOSED WATER SYSTEMS

Water supply systems may, because of code requirements or such conditions as high line pressure, among others, have installed devices such as pressure-reducing valves, check valves, and back ﬂ ow preventers. Devices such as these cause the water system to be a closed system.

THERMAL EXPANSION

As water is heated, it expands (thermal expansion). In a closed system, the volume of water will increase. As the volume of water increases, there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause premature tank failure (leakage). This type of failure is not covered under the limited warranty. Thermal expansion can also cause intermittent temperature-pressure relief valve operation: water discharged from the valve due to excessive pressure build up. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion. This condition is not covered under the limited warranty.

HOT-WATER

OUTLET

UNION UNION

SHUT-OFF VALVE

COLD-

WATER

INLET

Note: To protect against untimely corrosion of hot and cold water ﬁ ttings, it is recommended that di-electric unions or couplings be installed on this water heater when connected to copper pipe.

CAUTION

Property Damage Hazard

• Avoid water heater damage.

• Install thermal expansion tank if necessary.

• Do not apply heat to cold water inlet.

• Contact qualified installer or service agency.

Figure 15 shows typical attachment of water piping to the water heater. The water heater is equipped with 3/4” NPT water connections.

Note: If using copper tubing, solder tubing to an adapter before attaching the adapter to the water heater connections. Do not solder the water lines directly to the water heater connections - it will harm the dip tube and heat traps and damage the tank.

TEMPERATURE-PRESSURE RELIEF VALVE

3/4” SWEAT

FITTING

SOME

COMPONENTS

NOT SHOWN

FOR CLARITY.

METAL DRAIN PAN

3/4” SWEAT

FITTING

TEMPERATUREPRESSURE RELIEF VALVE

DISCHARGE PIPE (DO NOT CAP OR PLUG)

DRAIN VALV E

6 in. MAX. AIR GAP

FLOOR DRAIN

Figure 15

A properly-sized thermal expansion tank should be installed on all closed systems to control the harmful effects of thermal expansion. Contact a plumbing service agency or your retail supplier regarding the installation of a thermal expansion tank.

WARNING

Explosion Hazard

• Temperature-pressure relief

valve must comply with ANSI Z21.22-CSA4.4 and ASME code.

• Properly sized temperature-

pressure relief valve must be installed in opening provided.

• Do not plug, block, or cap the

discharge line.

• Failure to follow this warning

can result in excessive tank pressure, serious injury or death.

This water heater is provided with a properly rated/sized and certiﬁ ed combination Temperature-Pressure Relief Valve (T&P valve) by the manufacturer. The valve is certiﬁ ed by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements for

Relief Valves for Hot Water Supply Systems, ANSI Z21.22-CSA 4.4, and the code requirements of ASME.

If replaced, the new T&P valve must meet the requirements of local codes, but not less than a combination temperaturepressure relief valve rated/sized and certiﬁ ed as indicated in the above paragraph. The new valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water heater (150 psi) and a discharge capacity not less than the water heater Btu/hr input rate as shown on the water heater’s model rating plate.

Page 21

For safe operation of the water heater, the temperaturepressure relief valve must not be removed from its designated opening nor plugged. The T&P valve must be installed directly into the ﬁ tting of the water heater designed for the relief valve. Install discharge piping so that any discharge will exit the pipe within 6 in. above an adequate ﬂ oor drain, or external to the building. In cold climates it is recommended that it be terminated at an adequate drain inside the building. Be certain that no contact is made with any live electrical part.

The discharge opening must not be blocked or reduced in size under any circumstances. Excessive length (over 30 ft. ), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve.

No valve or other obstruction is to be placed between the T&P valve and the tank. Do not connect discharge piping directly to the drain unless a maximum of 6 in. air gap is provided. To prevent bodily injury, hazard to life, or property damage, the relief valve must be allowed to discharge water in adequate quantities should circumstances demand. If the discharge pipe is not connected to a drain or other suitable means, the water ﬂ ow may cause property damage.

CAUTION

It is recommended to manually operate the T&P valve at least once a year. Caution should be taken to ensure (1) no one is in front of or around the outlet of the discharge line, and (2) the water manually discharged will not cause any bodily injury or property damage because the water may be extremely hot. If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold-water inlet to the water heater, follow the draining instructions in this manual, and replace the temperature-pressure relief valve with a properly rated/ sized new one.

Note: The purpose of a temperature-pressure relief valve is to prevent excessive temperatures and pressures in the storage tank. The T&P valve is not intended for the constant relief of thermal expansion. A properly sized thermal expansion tank must be installed on all closed systems to control thermal expansion, see “Closed Water Systems” and “Thermal Expansion” sections.

Temperature-Pressure Relief Valve And Pipe Insulation

The T&P valve installed on this water heater is covered by insulation to minimize heat loss. The insulation has a hole on the bottom side to accommodate the valve outlet and allow for the piping connection. Do not restrict the outlet opening of the T&P valve.

Water Damage Hazard

• Temperature-pressure relief valve discharge pipe

must terminate at an adequate drain.

T&P Valve Discharge Pipe Requirements:

• Shall not be smaller in size than the outlet pipe size

of the valve, or have any reducing couplings or other restrictions.

• Shall not be plugged or blocked.

• Shall not be exposed to freezing temperatures.

• Shall be of material listed for hot water distribution.

• Shall be installed so as to allow complete drainage

of both the temperature-pressure relief valve and the discharge pipe.

• Must terminate a maximum of 6 in. above a ﬂ oor

drain or external to the building. In cold climates, it is recommended that the discharge pipe be terminated at an adequate drain inside the building

• Shall not have any valve or other obstruction between

the relief valve and the drain.

DANGER

• Burn hazard.

• Hot water discharge.

HOT

BURN

• Keep clear of

temperature-pressure relief valve discharge.

T&P Relief Valve Insulation (Outlet opening on underside)

Manual Relief Lever

T&P Relief Valve

T&P Relief Valve Drain Line

Figure 16

Locate the temperature and pressure relief valve on the water heater (also known as a T&P relief valve). See Figure 16.

1. Locate the slit running the length of the T&P relief valve insulation.

2. Spread the slit open and ﬁ t the insulation over the T&P relief valve. See Figure 16. Apply gentle pressure to the insulation to ensure it is fully seated on the T&P Relief Valve. Once seated, secure the insulation with duct tape, electrical tape, or equivalent. Important: The insulation and tape must not block the discharge opening or hinder access to the manual relief lever (Figure 16). Ensure a discharge pipe is installed into the T&P valve discharge opening per the instructions in this manual.

3. Locate the hot water (outlet) & cold water (inlet) pipes to the water heater.

4. Locate the slit running the length of a section of pipe insulation.

Page 22

5. Spread the slit open and slip the insulation over the cold water (inlet) pipe. Apply gentle pressure along the length of the insulation to ensure it is fully seated around the pipe. Also, ensure the base of the insulation is ﬂ ush with the water heater. Once seated, secure the insulation with duct tape, electrical tape, or equivalent.

6. Repeat steps 4 and 5 for the hot water (outlet) pipe.

7. Add additional sections of pipe insulation as needed.

HIGH ALTITUDE INSTALLATION

WARNING

Breathing Hazard - Carbon Monoxide Gas

• For operation above 10,100 ft.

a high altitude orifice must be installed.

• Contact a qualified installer or service agency.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

This heater is approved for operation up to 10,100 ft. without alteration.

Failure to replace standard oriﬁ ce with a high altitude oriﬁ ce when installed above 10,100 ft. could result in improper and inefficient operation of the appliance, producing carbon monoxide gas in excess of safe limits, which could result in serious injury or death. Contact your gas supplier for any speciﬁ c changes which may be required in your area.

GAS PIPING

WARNING

Explosion Hazard

Have a qualified technician make sure that the L.P. gas operating pressure does not exceed 14" water column.

Failure to do so can result in death, explosion, or fire.

Make sure the gas supplied is the same type listed on the model rating plate. The inlet gas pressure must not exceed 14” w.c. for natural gas and propane gas. The minimum inlet gas pressure shown on the rating plate is that which will permit ﬁ ring at rated input. All gas piping must comply with local codes and ordinances or with the “National Fuel Gas Code”, ANSI Z223.1/ NFPA 54. Copper or brass tubing and ﬁ ttings (except tin lined copper tubing) should not be used. If the gas control valve/thermostat is subjected to pressures exceeding 1/2 psi, the damage to the gas control valve/thermostat could result in a ﬁ re or explosion from leaking gas.

If the main gas line shut-off serving all gas appliances is used, also turn “OFF” the gas at each appliance. Leave all gas appliances shut “OFF” until the water heater installation is complete.

A gas line of sufﬁ cient size must be run to the water heater. Consult the current edition of “National Fuel Gas Code”, ANSI Z223.1/NFPA 54 and your gas supplier concerning pipe size.

WARNING

Fire and Explosion Hazard

• Do not use water heater with

any gas other than the gas shown on the rating plate.

• Excessive pressure to gas control valve can cause serious injury or death.

• Turn off gas lines during installation.

• Contact qualified installer or service agency.

There must be:

• A readily accessible manual shut-off valve in the gas

supply line serving the water heater, and

• A sediment trap ahead of gas control valve/thermostat

to help prevent dirt and foreign materials from entering the gas control valve/thermostat.

• A ﬂ exible gas connector or a ground joint union between

the shut-off valve and gas control valve/thermostat to permit servicing of the unit.

Be sure to check all the gas piping for leaks before lighting the water heater. Use a soapy water solution, not a match or open ﬂ ame. Repair and retest as required. When ﬁ nished, rinse off soapy solution and wipe dry.

Page 23

WARNING

SEDIMENT TRAPS

Fire and Explosion Hazard

• Use joint compound or tape

compatible with natural gas and propane.

• Leak test before operating heater.

• Disconnect gas piping and shut-off valve before pressure testing system.

Use pipe joint compound or Teﬂ on® tape marked as being resistant to the action of gases.

The appliance and its gas connection must be leak tested before placing the appliance in operation.

The appliance and its individual shut-off valve should be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi. It should be isolated from the gas supply piping system by closing its individual manual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi.

Connecting gas piping to the gas control valve/thermostat of water heater can be accomplished by either of two methods shown in Figure 17 & Figure 18.

WARNING

Fire and Explosion Hazard

• Contaminants in gas lines can

cause fire or explosion.

• Clean all gas piping before installation.

• Install sediment trap in accor-

Contaminants in the gas lines may cause improper operation of the gas control valve/thermostat that may result in ﬁ re or explosion. Before attaching the gas line be sure that all gas pipe is clean on the inside. To trap any dirt or foreign material in the gas supply line, a sediment trap (sometimes called a dirt leg) must be incorporated in the piping. The sediment trap should be either a tee ﬁ tting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap. If a tee ﬁ tting is used, it should be installed in conformance with one of the methods of installation shown in Figure 17 & Figure 18. Refer to the current edition of the “National Fuel Gas Code”, ANSI Z223.1/NFPA 54.

dance with NFPA 54.

SHUT-OFF VALVE

GROUND

JOINT

UNION

(OPTIONAL)

3”

MIN.

3 in. MIN.

SEDIMENT

CAP

BLACK PIPE

SEDIMENT

CAP

FLEX PIPE

(PROPERLY SIZED

FOR THE HEATER

INPUT RATE)

TRAP

Figure 17

TRAP

Figure 18

GROUND

JOINT

UNION

(OPTIONAL)

GAS

CONTROL

VALV E

GAS

CONTROL

VALV E

HOT-WATER

OUTLET

UNION

SOME

COMPONENTS

NOT SHOWN

FOR CLARITY.

METAL DRAIN PAN

COLD-

WATER

INLET

SIDE TAP (OUTLET)

TEMPERATUREPRESSURE RELIEF VALVE

DISCHARGE PIPE (DO NOT CAP OR PLUG)

SIDE TAP (INLET)

DRAIN VALV E

6 in. MAX. AIR GAP BELOW DISCHARGE PIPE

FLOOR DRAIN

Figure 19

Page 24

FILLING THE WATER HEATER

CAUTION

Property Damage Hazard

• Avoid water heater damage.

• Fill tank with water before operating.

• Do not insert the power cord into the electrical

receptacle until the heater has been fully installed.

• Never use this water heater unless it is completely full

of water. To prevent damage to the tank, the tank must be ﬁ lled with water. Water must ﬂ ow from the hot-water faucet before turning “ON” gas to the water heater.

To ﬁ ll the water heater with water:

1. Close the water heater drain valve by turning handle to the right (clockwise). The drain valve is on the lower front of water heater (see Figure 19).

2. If the heater is equipped with plumbing side taps and they are not connected to piping, ensure the side taps have been closed with pipe plugs.

3. Open all hot-water faucets served by the water heater to allow air to escape from the tank and the water piping. Ensure any shut-off valves between the heater and the faucets are the open position.

4. Open the cold-water supply valve to the water heater. Notes:

• The cold-water supply valve must be left open when

the water heater is in use.

• Avoid water leakage when ﬁ lling the tank. Do not

allow the insulation of the water heater to get wet as water can reduce the effectiveness of the insulation.

5. To ensure complete ﬁ lling of the tank, allow air to exit by opening nearest hot-water faucet. Allow water to run until a constant ﬂ ow is obtained. This will let air out of the water heater and the piping.

6. Check all water piping and connections for leaks. Repair as needed.

VENTING

All venting must comply with the current edition of the “National Fuel Gas Code”, ANSI Z223.1/NFPA 54. This

heater is certiﬁ ed to be installed using Schedule 40 PVC, ABS or CPVC or polypropylene plastic vent material. Only use approved material. All venting material and components must be joined with the approved primer/ cleaner and solvent cement or mechanical seals.

Improper Installation, use and service may result

in property damage.

This unit includes an air intake terminal

and an exhaust vent terminal.

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Install vent system In accordance with codes.

• Do not operate water heater if flood damaged.

• Install water heater in accordance with the

instruction manual.

• Do not operate if soot buildup is present.

• Do not obstruct water heater air intake(s) with

insulating blanket.

• Do not place chemical vapor emitting products near water heater.

• Gas and carbon monoxide detectors are available.

• Never operate the heater unless it is vented to the

outdoors and has adequate air supply to avoid risks of improper operation, fire, explosion or asphyxiation.

• 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.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

3” CPVC

VENT PIPE

3” CPVC VENT

PIPE, 3 in. MAX

LENGTH

3” RUBBER COUPLING (SUPPLIED)

BLOWER

Important: DO NOT common vent this water heater with any power vented appliance. DO NOT vent into a common chimney.

3” CPVC ELBOW

Figure 20

3” INLET PIPE

AIR DUCT ADAPTER

Use only Schedule 40 CPVC piping and ﬁ ttings for the ﬁ rst linear 5 ft. of the outlet vent system. A 5 ft. section of 3” Schedule 40 CPVC vent pipe is supplied with the water heater for this purpose. If 4” venting is to be used it must be ﬁ eld supplied. For the rest of the outlet vent system use piping and ﬁ ttings as deﬁ ned above.

Page 25

This water heater has a direct vent system in which all air for combustion is taken from the outside atmosphere and all combustion products are discharged to the outdoors. This water heater must be properly vented for removal of exhaust gases to the outside atmosphere. Correct installation of the vent pipe system is mandatory for the safe and efﬁ cient operation of this water heater and is an important factor in the life of the unit. A Vent Kit included with this water heater consists of:

1. Blower outlet adapter (rubber coupling and gear clamps),

2. Sound Suppressor

3. One (1) 45° Vent Termination Elbow,

4. More-restrictive Vent Termination Screens,

5. Less-restrictive Vent Termination Screens,

6. Wall Plates,

Vent pipe must be installed in accordance with all local and provincial or state codes or, in the absence of such, the latest edition of “National Fuel Gas Code”, ANSI Z223.1/NFPA 54.

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Install water heater in accordance with the instruction manual and NFPA 54.

• To avoid injury, combustion and ventilation air must be taken from outdoors.

• Do not place chemical vapor emitting products near water heater.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

Important: Check to make sure the vent pipe is not blocked in any way. Note: Do not common vent this water heater with any other appliance. Do not install in the same chase or chimney with a metal or high-temperature plastic from another gas or fuel burning appliance.

Page 26

TERMINATION CLEARANCES (SIDEWALL)

INSIDE CORNER

DETAIL

Vent terminal

Air supply inlet

Area where is not permitted

FIXED

CLOSED

OPERABLE

FIXED

CLOSED

Gas meter / regulator

Figure 21

Vent terminal clearances for “Power Direct Vent” installations.

Clearance above grade, veranda,

porch, deck or balcony

Clearance to window or door that may

be opened

Clearance to permanently closed

window

Vertical clearance to ventilated sofﬁ t located above the terminal within

a horizontal distance of 2’ from the center line of the terminal

E Clearance to unventilated sofﬁ t 12” L

F Clearance to outside corner 2’ M

G Clearance to inside corner 18”

In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code. ‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the ﬂ oor.

12” H

4’ below or to side of opening; 1’ above opening

12” J

12” K

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

Clearance to service regulator vent

outlet

Clearance to a non mechanical air supply inlet into building or combustion air inlet to any other appliance

Clearance to a mechanical air supply inlet

Clearance above paved sidewalk or paved driveway located on public property

Clearance under veranda, porch, deck, or balcony

N/A

3’*

4’ below or to side of opening; 1 foot above opening.

3’ above if within 10’ horizontally

7’

12”‡

Page 27

Side Wall Vent Terminal Installation Important: When terminating the vent on a side wall, the

following speciﬁ cations pertaining to terminal location must be followed (see Figure 22).

1. The air intake terminal and the exhaust vent terminal must terminate on the same exterior wall.

2. The vertical centerline of the air intake terminal must be located at a minimum of 8 in. and not more than 24 in. from the vertical centerline of the exhaust vent terminal.

3. The horizontal centerline of the air intake terminal may not be located more than 4 in. below the horizontal centerline of the exhaust vent terminal.

4. To avoid exhaust recirculation, the air intake terminal may be rotated away from the exhaust vent terminal (see Figure 22).

4. The air intake termination and the exhaust vent termination must penetrate the same side of roof.

5. The centerline of the air intake termination and the centerline of the exhaust vent termination must not be closer than 8 in. and not farther away than 24 in. .

6. The air intake terminal and the exhaust vent terminal must be oriented facing downward and the same direction.

Concentric Vent Termination Kit Installation

A concentric vent termination kit (see Table 2) may be used for vertical or horizontal terminations.

45° ELBOW (SEE LOCAL CODES)

PIPE NIPPLE

SIDE WALL

EXHAUST VENT

TERMINAL

8 in. MIN, 24

in. MAX.

INTAKE VENT

TERMINAL

4 in. MAX

Figure 22

Roof Vent Terminal Installation Important: When terminating the vents through a roof,

the following speciﬁ cations pertaining to terminal location must be followed (see Figure 23).

1. The air intake termination and the exhaust vent termination shall extend above anticipated snow level or at least 18 in. above the roof.

2. Must provide proper support for all pipes protruding through roof.

3. The vertical roof terminations should be sealed with a plumbing roof boot or equivalent ﬂ ashing.

MIN.,

MAX.

“A” & “B”: ABOVE SNOW ACCUMULATION LEVEL OR 18 in. MIN. ABOVE ROOF.

1 in.

INTAKE

VENT

TERMINAL

SCREEN INSIDE

COMBUSTION AIR

FLASHING (FIELD SUPPLIED)

EXHAUST

ABOVE SNOW ACCUMULATION LEVEL OR 18 in. MIN. ABOVE ROOF.

ROOF

STRAP (FIELD SUPPLIED)

ELBOW (FIELD SUPPLIED)

COMBUSTION AIR

Figure 24

Figure 24 illustrates the concentric vent termination kit in a vertical (roof) installation. Ensure the combustion air intake location is above the anticipated snow level.

EXHAUST

VENT

TERMINAL

Figure 23

Page 28

ORIENTATION OF EXHAUST PIPING AND COMBUSTION AIR PIPING RELATIVE TO EACH OTHER MAY BE VERTICAL (AS SHOWN) OR AT ANY OTHER ANGLE TO SUIT THE INSTALLATION.

STRAP (FIELD SUPPLIED)

EXHAUST

COMBUSTION AIR

PIPE NIPPLE (USE WITH ELBOW)

90° ELBOW (SEE LOCAL CODES)

SLOPE 1/4 in. OVER

COMBUSTION AIR

ELBOW (FIELD SUPPLIED)

5 ft.

Figure 25

VENT DIA. P/N

3” 9006328005

Table 2

Figure 25 illustrates the concentric vent kit for a horizontal (side wall) installation. To prevent rain water from entering the exhaust outlet, slope the vent kit at a downward pitch of 1/4 in. per 5 ft. away from the inside wall. Ensure the combustion air intake location is above the anticipated snow level.

Multiple Concentric Vent Installations

When two concentric vent kits are being installed, the vent hood centers shall be either less than 9.5 in. apart or more than 43.5 in. apart. Spacings between 9.5 in. and

43.5 in. are not allowed due to the possibility of exhaust cross circulation (see Figure 26).

When more than 2 kits are installed only 2 of them shall be less than 9.5 in. apart. Never install 3 termination kits together less than 9.5 in. apart (see Figure 27).

WALL

9.5 in. MAX OR

43.5 in. MIN

NOTE: IF AN ELBOW IS REQUIRED BY LOCAL CODES INSTALL SCREEN IN ELBOW INSTEAD OF CONCENTRIC VENT

SCREEN

EXHAUST.

Figure 26

1 in. MAXIMUM

WALL

NOTE: IF AN ELBOW IS REQUIRED BY LOCAL CODES INSTALL SCREEN IN ELBOW INSTEAD OF CONCENTRIC VENT EXHAUST.

9.5 in

MAX..

SCREEN INSIDE

SCREEN

3.5 in. MIN.

WALL

Figure 27

Vent Pipe Length

The maximum allowable pipe lengths for air intake and exhaust are listed in Table 3. The speciﬁ ed maximum lengths are for each of the intake and exhaust systems and not for the combined lengths of both systems. In addition, each system requires a 45° long sweep elbow termination with a restrictive screen. Minimum pipe length is 3 ft. with a minimum of one 90° elbow per side (intake and exhaust).

1. Determine termination type and pipe size.

2. Determine number of elbows in vent system. Do not include termination elbow. Calculate the maximum equivalent length of the exhaust and air intake system.

90° SHORT SWEEP ELBOW

(MORE RESTRICTIVE)

90° LONG SWEEP ELBOW

(LESS RESTRICTIVE)

Figure 28

Page 29

WATER

HEATER

MODEL

75 gal. 76,000

* see Figure 29, “Venting Terminations And Sizing” and “Vent Screen Installation”.

HEATER

INPUT

(Btu/hr)

VENT

SIZE (Inside Diam.)

3”

4”

2 PIPE MAX.

EQUIV. VENT

LENGTH

50’ + term. elbow and screen*

125’ + term. elbow and screen*

2 PIPE

MIN. EQUIV.

VENT LENGTH

7’ + term. elbow and screen*

50’ + term. elbow and screen*

CONC. VENT

VENT LENGTH

30’ + term. elbow and screen*

MAX. EQUIV.

N/A N/A

CONC. VENT

MIN. EQUIV.

VENT LENGTH

7’ + term. elbow and screen*

Equivalent lengths of straight pipe for various elbows using Schedule 40 PVC, CPVC, ABS, and polypropylene.

Vent Pipe

Size

3" 4"

Vent Pipe Termination

This water heater includes one (1) pair of more restrictive Vent Termination Screens and one (1) pair of less restrictive Vent Termination Screens. For safety and optimum efﬁ ciency performance, ensure the correct Vent Termination Screen is installed for the vent length in your installation.

Note: Before installing the Power Direct Vent Water Heater, it is recommended that the location of the pipe terminations (air intake and exhaust vent) be determined.

Use the Vent Termination Screen as shown in Figure 29. Install the same Vent Termination Screen in the Termination Elbow on both the air intake pipe and the exhaust pipe.

Venting Terminations And Sizing

Elbow

Type

90° 8’ 5’

45° 4’ 2.5’

Short Sweep/

Table 3

Radius

Long Sweep/

Radius

• Refer to Table 3 for vent pipe materials and sizing. If

the installation requires a vent riser, suitable drainage must be provided to ensure condensation does not accumulate (see Figure 36). Termination through a roof is shown Figure 23.

Notes:

1. Vent lengths shown do not include vent termination elbow.

2. A horizontal vent must have a 45° vent termination elbow to direct the vent pipe downward.

3. A vertical vent must have a 90° elbow to direct the vent pipe horizontally followed by a vent termination 45° elbow to direct the vent pipe downward.

4. If additional elbows are used in the vent system the allowable vent lengths are reduced (see chart below).

5. Two 45° elbows are considered the equivalent of one 90° elbow.

6. The equivalent length of the sound suppressor is similar to that of a short sweep 90° elbow.

Vent Screen Installation

Installed in the vent termination elbow, the vent screen is required to keep foreign objects, rodents and small birds from entering the venting system. These screens have been sized to ensure maximum energy efﬁ ciency of the vent system based on the “equivalent length” of the vent piping. CHOOSE ONLY the ONE PAIR OF SCREENS THAT MATCH YOUR VENTING CONFIGURATION (see Figure 29). How to determine the “equivalent length” is shown in Table 3.

• Supplied with this heater are several vent termination

screens (see Figure 29).

• Install the appropriate vent screen into the vent

termination elbow.

• Gently push the screen into the termination elbow until

it sits against the inside shoulder.

• The metal wire screens are self-securing.

• Plastic screens must be secured with (2) screws:

• Install plastic screen into elbow (see Figure 30).

• Orient screen as shown in see Figure 30 with an

opening at the bottom of the assembly and the smooth side facing in.

• Ensure screen is fully seated against shoulder in

elbow.

• Secure screen in place with screws (ﬁ eld supplied)

(see Figure 30).

Important: Failure to install the appropriate screen in the vent termination elbows could result in improper heater operation with attendant risk of property damage, personal injury or death by ﬁ re or carbon monoxide poisoning.

Page 30

with 3” venting (short) with 3” venting (long)

VENT LENGTH LESS THAN OR EQUAL TO 20 EQUIVALENT FT.

USE THIS SCREEN (SUPPLIED).

VENT LENGTH GREATER THAN

20 EQUIVALENT FT.

USE THIS SCREEN (SUPPLIED).

with 4” venting

VENT LENGTH GREATER THAN

50 EQUIVALENT FT. USE THIS

SCREEN (SUPPLIED).

Figure 29

Note: Use only solid (not foam core) piping. Plastic pipe

and ﬁ ttings are available through most plumbing suppliers. Always check the marking on the pipe to make sure you are using the correct material.

VENT PIPE PREPARATION

1. INITIAL PREPARATION

• Make sure the solvent cement you are planning to

use is designed for the speciﬁ c application you are attempting.

• Know the physical and chemical characteristics and

limitations of the PVC and CPVC piping materials that you are about to use.

• Know the reputation of your manufacturer and their

products.

• Know your own qualifications or those of your

contractor. The solvent welding technique of joining PVC and CPVC pipe is a specialized skill just as any other pipe ﬁ tting technique.

• Closely supervise the installation and inspect the

ﬁ nished job before start-up.

• Contact the manufacturer, supplier, or competent

consulting agency if you have any questions about the application or installation of PVC and CPVC pipe.

• Take the time and effort to do a professional job.

Shortcuts will only cause you problems and delays in start-up. By far, the majority of failures in PVC and CPVC systems are the result of shortcuts and/ or improper joining techniques.

PLASTIC SCREEN

POCKETS

FACING OUT

#6 SHEET

METAL

SCREW

(FIELD

SUPPLIED)

ELBOW

SHOULDER

#6 SHEET

METAL

SCREW

CLOSED POCKET

OPEN

POCKET

Figure 30

Vent Pipe Material

This heater is certiﬁ ed to be installed using Schedule 40 PVC or CPVC or polypropylene or ABS plastic vent material for the exhaust. The combustion air intake material may be PVC, ABS, CPVC or polypropylene. Check local codes to determine which materials are allowed in your area and only use approved material. All venting material and components must be joined with the approved primer/ cleaner and solvent cement or mechanical seals. Do not cement the venting system to the heater.

2. SELECTION OF MATERIALS (PVC and CPVC VENTING)

• Cutting Device - Saw or Pipe Cutter

• Deburring Tool, Knife, File, or Beveling Machine (2”

and above)

• Brush - Pure Bristle

• Rag - Cotton (Not Synthetic)

• Primer and Cleaner

• Solvent Cement - PVC for PVC Components and

CPVC for CPVC Components only

• Containers - Metal or Glass to hold Primer and

Cement. Select the type of PVC or CPVC materials to be used on the basis of their application with respect to chemical resistance, pressure rating, temperature characteristics, etc.

• Insertion Tool - Helpful for larger diameter pipe and

ﬁ ttings 6” and above.

Page 31

WARNING

Fire or Explosion Hazard

• Do not store or use gasoline or other flammable vapors and

liquids in the vicinity of this or any other appliance.

• Avoid all ignition sources if you smell gas.

• Do not expose water heater control to excessive gas

pressure.

• Use only gas shown on rating plate.

• Maintain required clearances to combustibles.

• Keep ignition sources away from faucets after extended

period of non-use.

Read instruction manual before

installing, using or servicing

water heater.

Primer:

It is recommended that Tetrahydrofuran (THF) be used to prepare the surfaces of pipe and ﬁ ttings for solvent welding. Do not use water, rags, gasoline or any other substitutes for cleaning PVC or CPVC surfaces. A chemical cleaner such as MEK may be used.

Cement:

PVC Materials should use ASTM D-2564 Grade Cement; CPVC Materials should use ASTM F-493 Grade Cement and ABS Materials should use ASTM D-2235 Grade Cement. Select the proper cement; Schedule 40 cement should be used for Schedule 40 pipe. Never use all-purpose cements, commercial glues and adhesives or ABS cement to join PVC or CPVC pipe and ﬁ ttings.

WARNING

Fire Hazard

• Primers and cements are

extremely flammable, and must not be stored or used near heat or open flame.

• Also, use only in a well ventilated area.

Applicators:

Select a suitable pure bristle type paint brush. Use a proper width brush or roller to apply the primer and cement (see chart below). Speedy application of cement is important due to its fast drying characteristics. IMPORTANT NOTE: A dauber type applicator should only be used on pipe sizes 2” and below. For larger diameter pipe, a brush or roller must be used.

RECOMMENDED BRUSH* SIZE FOR

PRIMER AND CEMENT APPLICATIONS

Nominal

Pipe (IPS)

3 1.5” - 2.5”

*USE ONLY NATURAL BRISTLE

3. MAKING THE JOINT

A. Cutting

Pipe must be squarely cut to allow for the proper interfacing of the pipe end and the ﬁ tting socket bottom. This can be accomplished with a miter box saw or wheel type cutter. Wheel type cutters are not generally recommended for larger diameters since they tend to ﬂ are the corner of the pipe end. If this type of cutter is used, the ﬂ are on the end must be completely removed. Note: Power saws, if used, should be speciﬁ cally designed to cut plastic pipe.

Figure 31

B. Deburring

Use a knife, plastic pipe deburring tool, or ﬁ le to remove burrs from the end of small diameter pipe. Be sure to remove all burrs from around the inside as well as the outside of the pipe. A slight chamfer (bevel) of about 10°-15° should be added to the end to permit easier insertion of the pipe into the end of the ﬁ tting. Failure to chamfer the edge of the pipe may remove cement from the ﬁ tting socket, causing the joint to leak.

Brush Size

Table 4

Figure 32

Page 32

C. Test dry ﬁ t of the joint

Tapered fitting sockets are designed so that an interfaced ﬁ t should occur when the pipe is inserted about 1/3 to 2/3 of the way into the socket. Occasionally, when pipe ﬁ tting dimensions are at the tolerance extremes, it will be possible to fully insert dry pipe to the bottom of the ﬁ tting socket. When this happens, a sufﬁ cient quantity of cement must be applied to the joint to ﬁ ll the gap between the pipe and ﬁ tting. The gap must be ﬁ lled to obtain a strong, leak-free joint.

D. Inspection, cleaning, priming

Visually inspect the inside of the pipe and ﬁ tting sockets and remove all dirt, grease or moisture with a clean dry rag. If wiping fails to clean the surfaces, a chemical cleaner must be used. Check for possible damage such as splits or cracks and replace if necessary.

Depth-of-entry

Marking the depth of entry is a way to check if the pipe has reached the bottom of the ﬁ tting socket in Step F. Measure the ﬁ tting depth and mark this distance on the pipe O.D. You may want to add several inches to the distance and make a second mark as the primer and cement will most likely destroy your ﬁ rst one. Apply primer to the surface of the pipe and ﬁ tting socket with a natural bristle brush. This process softens and prepares the PVC or CPVC for the solvent cementing step. Move quickly and without hesitation to the cementing procedure while the surfaces are still wet with primer.

E. Application of solvent cement

• Apply solvent cement evenly and quickly around

outside of pipe at a width a little greater than the depth of the ﬁ tting socket.

• Apply a light coat of cement evenly around the inside

of the ﬁ tting socket. Avoid puddling.

• Apply a second coat of cement to the pipe end.

WARNING

Fire Hazard

• Cans of cement and primer should

be closed at all times when not in use to prevent evaporation of chemicals and hardening of cement.

• They are also very flammable and should be kept away from heat or flame.

Figure 33

F. Joint assembly

Working quickly, insert the pipe into the ﬁ tting socket bottom and give the pipe or ﬁ tting a 1/4 turn to evenly distribute the cement. Do not continue to rotate the pipe after it has hit the bottom of the ﬁ tting socket. A good joint will have sufﬁ cient cement to make a bead all the way around the outside of the ﬁ tting hub. The ﬁ tting will have a tendency to slide back while the cement is still wet so hold the joint together for about 15 seconds.

Figure 34

G. Cleanup and joint movement

Remove all excess cement from around the pipe and ﬁ tting with a dry cotton rag. This must be done while the cement is still soft. The joint should not be disturbed immediately after the cementing procedure, and sufﬁ cient time should be allowed for proper curing of the joint. Exact drying time is difﬁ cult to predict because it depends on variables such as temperature, humidity and cement integrity. For more speciﬁ c information, you should contact your solvent cement manufacturer.

Figure 35

Page 33

Vent Pipe Installation

The following guidelines should be followed when installing the air intake and exhaust vent system:

• Venting should be as direct as possible with a minimum

number of pipe ﬁ ttings.

• Vent diameter must not be reduced unless speciﬁ cally

noted in the installation instructions.

• Support all horizontal pipe runs every 4 ft. and all

vertical pipe runs every 5 ft. or according to local codes or venting manufacturer’s instructions.

• Vents run through unconditioned spaces where

below freezing temperatures are expected, are not recommended.

• Vents run through unconditioned spaces inside a

building may result in the condensation of ﬂ ue gases during the winter season. The rubber coupling joined to the blower includes a nipple with a cap. In installations

such as this connect a condensation trap to this nipple. The combustion air intake and exhaust vent system and termination may be installed in one of the following type terminations:

1. Concentric Vent Termination (horizontal/side wall

installation).

2. Concentric Vent Termination (vertical/roof installation).

All pipe, ﬁ ttings, pipe cement, primers and procedures must conform to American National Standard Institute and American Society for Testing and Materials (ANSI/ASTM) standards. This water heater has been design certiﬁ ed by CSA International for use with the speciﬁ ed (CSA) listed plastic vent pipe.

WARNING

Fire Hazard

• Primers and cements are

extremely flammable, and must not be stored or used near heat or open flame.

• Also, use only in a well ventilated area.

WARNING

Fire Hazard

• Cans of cement and primer should

be closed at all times when not in use to prevent evaporation of chemicals and hardening of cement.

• They are also very flammable and should be kept away from heat or flame.

Do not use solvent cement to connect the exhaust vent system to the blower. Use the rubber coupling and gear clamps instead. This connection must be removable to service the heater. All other joints in the air intake and exhaust vent systems must be properly joined and sealed.

Vent Pipe Runs

1. The exhaust vent system must not, under any circumstances, be run downhill then run uphill thus forming a valley. It may leave a space to accumulate condensation and block vent pipe.

2. Horizontal runs require a minimum 1/8 in. rise per 5 ft. and a support every 4 ft. or according to venting manufacturer’s instructions. Ensure there is enough height between heater and termination to raise vent pipe runs the required distance.

3. Vertical runs require a support every 5 ft. that must provide proper support to prevent stress on the pipes or according to venting manufacturer’s instructions.

Vent Terminal Installations Important: The vent system must terminate so that proper

clearances are maintained as cited in local codes or the latest edition of “National Fuel Gas Code”, ANSI Z223.1/ NFPA 54.

In addition, the manufacturer recommends the vent terminal not to be installed closer than 6 in. from an inside or outside corner.

Plan the vent system layout so that proper clearances are maintained from plumbing and wiring. Vent pipes serving power vented appliances are classiﬁ ed by building codes as “vent connectors”. Required clearances from combustible materials must be provided in accordance with information in this manual under “Locating The New Water Heater” and with the latest edition of “National Fuel Gas Code”,

ANSI Z223.1/NFPA 54 and local codes.

BLOWER ASSEMBLY INSTALLATION

1. This power vented water heater comes with blower assembly installed.

2. After unit is set in place, make sure blower assembly is still mounted securely. Make sure there is no damage to blower.

3. Make sure there is no packing material in the inlet or discharge of the blower.

4. Make sure that the plastic tubing is still attached from the air pressure switch to the port on the blower motor housing. Make sure the plastic tubing is not folded anywhere between the pressure switch and the blower motor housing (see Figure 37 & Figure 38).

5. This water heater is a polarity sensitive appliance and will not operate if the power supply polarity is reversed. Power to this water heater must be wired properly (correct polarity).

6. Do not plug in power cord until vent system is completely installed. The Power Direct Vent operates on 110 -120 VAC. therefore a grounded outlet must be within reach of the 6 foot ﬂ exible power cord supplied with the heater. The power cord supplied may be used on a unit only where local codes permit. If local codes do not permit use of ﬂ exible power supply cord:

a. Make sure the unit is unplugged from the wall

outlet. Remove the screw and open panel on the front of the junction box on the blower.

Page 34

b. Cut the ﬂ exible power cord, leaving enough to be

able to make connections. Remove the strain relief

ﬁ tting from the box. c. Install a suitable conduit ﬁ tting inside the enclosure. d. Splice ﬁ eld wiring into existing wiring using code

authorized method (wire nuts, etc). e. Be certain that the neutral and line connections

are not reversed when making these connections. f. Ground heater properly. This water heater must be

grounded in accordance with the current edition

of “National Electrical Code”, NFPA 70 and/or

local codes. These must be followed in all cases.

The water heater must be connected to a grounded

metal, permanent wiring system or an equipment

grounding conductor must be run with the circuit

conductors and connected to the equipment

grounding terminal or lead on the water heater (see

Figure 11; the wiring diagram). g. Close the panel on the junction box. Make sure that

the access panel is properly secured.

7. The blower discharge has a rubber coupling made to accept only straight sections of 3” pipe. To start off with an elbow, a short section of the straight pipe must be cut and glued into the end of the elbow that will mount in the rubber coupling.

8. A rubber coupling is an integral part of the vent system and must be used in every installation. Failure to do so may result in overheating, poor performance, nuisance lock-outs, personal injury or death.

CAUTION

Property Damage Hazard

• Do not overtighten the top and bottom gear clamps of the

rubber coupling.

• Do not apply solvent cement or silicone to the rubber coupling connection.

BLOWER

ASSEMBLY

8 in.

LOOP

HOSE CONNECTION

PORT FOR

CONDENSATE DRAIN

Figure 36

DRAIN

Vent/Intake Pipe Connections To Blower/Air Duct

1. The CPVC vent piping ( 5 ft. supplied) connects into the rubber coupling located on the top of the blower assembly. This coupling includes gear clamps to connect the venting to the blower.

Important: These connections must be properly seated and tightened to prevent the leakage of ﬂ ue gases into the area. See Figure 37 & Figure 38.

2. The heaters are supplied with a 3” rubber coupling to accept the vent pipe. Note: Polypropylene vent systems require separate adaptor (ﬁ eld supplied).

3. Before installing clean and lightly sand the end of the CPVC plastic vent piping that will connect into the rubber coupling. For polypropylene vent systems follow manufacturer’s instructions.

4. Loosen the upper clamp on the rubber coupling and insert the sanded end of the vent piping a full 1-1/4 in. . Do not use glue or sealant in the rubber coupling. Check that there is no stress on the connection or the vent piping that may be caused by twisting or bending.

5. Tighten the upper clamp so that the vent piping is ﬁ rmly secured in the coupling and is gas tight. Do not over tighten or cause distortion of any of the parts. Ensure the bottom of the rubber coupling is ﬁ rmly seated on the blower outlet and that the lower gear clamp is also secure. Check to ensure there is no distortion or movement of the clamped assembly once it is completed.

Page 35

Coupling Installations According To Vent Sizes

3” CPVC

VENT

PIPE

3” RUBBER COUPLING (SUPPLIED)

BLOWER

CONFIGURATION FOR HI-INPUT HEATERS CONNECTED TO 3” VENTING. (OPTIONAL CONFIGURATION FOR LO-INPUT HEATERS CONNECTED TO 3” VENTING.)

3” INLET PIPE

AIR DUCT ADAPTER

Figure 37

4” CPVC

VENT PIPE

3”-4” CPVC

ADAPTER (FIELD

SUPPLIED)

3” CPVC VENT

PIPE, 3 in. MAX

LENGTH

3” RUBBER

COUPLING

(SUPPLIED.)

4” INLET PIPE

3” PIPE

(FIELD

SUPPLIED)

SOUND SUPPRESSOR WITH SCREEN

EXHAUST

VENT

TERMINAL

Figure 40

INTAKE

VENT

TERMINAL

BLOWER

CONFIGURATION FOR HI-INPUT HEATERS CONNECTED TO 4” VENTING.

AIR DUCT ADAPTER

Figure 38

SOUND SUPPRESSOR

Included with this water heater is a Tee ﬁ tting conﬁ gured as a sound suppressor which should be used as the exhaust termination (see Figure 39 and Figure 40). The Vent Termination Screen (see “Vent Pipe Termination” section) must be installed in the straight through end of the Sound Suppressor (see Figure 39 and Figure 40).

EXHAUST VENT

TERMINAL

INTAKE VENT

TERMINAL

SIDE WALL

RODENT SCREEN (INSTALL INTO TERMINATION)

Figure 39

Page 36

INSTALLATION CHECKLIST

Note: Use and complete this checklist before lighting the

heater. Correct any conditions that do not meet these instructions.

Water Heater Location

Centrally located with the water piping system.



Located as close to gas piping and vent pipe system as possible.

Located indoors and in a vertical position. Protected



from freezing temperatures.

Proper clearances from combustible surfaces main-



tained and not installed directly on a carpeted floor.

Provisions made to protect the area from water



damage. Metal drain pan installed and piped to an adequate drain.

Installation area free of corrosive elements and flam-



mable material.

Sufficient room to service the water heater.



Protected from moving vehicles.



Gas Supply And Piping

Gas supply is the same type as listed on the water



heater data plate.

Gas line equipped with shut-off valve, union and



sediment trap.

Approved pipe joint compound used.



Adequate pipe size and of approved material.



Chloride-free soap and water solution or other



approved means used to check all connections and fittings for possible gas leaks.

Vent Termination Horizontal

12 in. min. above grade/snow level.



Away from corners, other vents, windows etc.



Vertical

Air Intake and Exhaust terminations 18 in. min.



above roof/snow level.

Water System Piping

Temperature and Pressure relief valve properly



installed with a discharge line run to an open drain and protected from freezing.

All piping properly installed and free of leaks.



Side taps plugged if not used for combo heating.



Heater completely filled with water.



Closed system pressure build-up precautions



installed.

Electrical Connections

Unit connected to a 120V electrical supply.



Proper polarity.



Water heater properly grounded.



Installed in accordance with prevailing provisions



of local codes, or in the absence of such, the latest edition of “National Electrical Code” (NFPA 70).

Vent Pipe System

Vent pipe and fittings of approved material.



Acceptable size, length and number of elbows on



exhaust vent system.

Installed in accordance with prevailing provisions



of local codes, or in the absence of such, the latest edition of “National Fuel Gas Code”, ANSI Z223.1/ NFPA 54.

Horizontal piping slopes at an upward pitch of 1/8 in.



rise per 5 ft. away from the water heater.

Not obstructed in any way.



After all actions on checklist are checked/

completed, read the Lighting Instructions and

proceed with lighting the heater.

Page 37

LIGHTING INSTRUCTIONS

FLAMMABLE

Read and understand these directions thoroughly before attempting to operate the water heater. Make sure the burner viewport is not missing or damaged. Make sure the tank is completely ﬁ lled with water before operating the water heater. The gas control valve/thermostat has an “On/Off Switch” and must be turned on before the water heater is operational. Check the label on the front of the water heater near the gas control valve/thermostat for the correct gas. Do not start this water heater with any gas other than the one listed on the label. If you have any questions or doubts, consult the gas supplier or gas utility company. The following Lighting Instruction label appears on the front of the water heater.

FOR YOUR SAFETY READ BEFORE LIGHTING

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

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

BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES.

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

equipped with an ignition device which automatically lights the burner. Do NOT try

to light the burner by hand.

B. BEFORE OPERATING smell all around the

appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

• Do not touch any electric switch; Do not use any phone in your building.

• Immediately call your gas supplier from a neighbor's phone. Follow the gas suppliers instructions.

This heater is equipped with a Honeywell gas control/ thermostat and a hot-surface igniter. This control is a combination gas valve, thermostat and ignition controller for use on this power vented water heater. The valve contains a micro-controller that supervises the ignition sequence and monitors the temperature settings and operation of the heater. The controller also monitors the ﬂ ammable vapor safety features of this heater.

This heater is equipped with a hot-surface ignition system that automatically ignites the burner. Do not attempt to light this heater manually with a match or ﬂ ame-producing device.

FLAMMABLE

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

C. Use only your hand to turn the gas control

buttons. Never use tools. If the control buttons will not turn, don't try to repair them, 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 contact a qualified installer or service agency to replace a flooded water heater. Do not attempt to repair the unit. It must be replaced!

OPERATING INSTRUCTIONS

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

2. Turn off all electric power to the appliance.

3. Turn the thermostat counter-clockwise to the lowest setting.

4. Set the switch on the control to the “OFF” position.

5. Do not attempt to light manually.

6. 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 the next step.

10. If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance” and call your service technician or gas supplier.

7. Turn on all electric power to the appliance.

8. Set the switch on the control to the “ON” position.

9. Turn thermostat to desired setting.

DANGER

DANGER Hotter water increases the risk of scald injury. Consult the instruction manual before changing temperature.

TO TURN OFF GAS TO APPLIANCE

1. Turn the thermostat counter-clockwise to the lowest setting.

2. Set the gas control switch to the “OFF” position.

3. Turn off electrical power to the appliance if service is to be performed.

323546-000

Page 38

OPERATING THE TEMPERATURE CONTROL SYSTEM

It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperature be set for the lowest temperature which satisﬁ es your hot-water needs. This will also provide the most energy efﬁ cient operation of the water heater. Short repeated heating cycles caused by small hot-water uses can cause a temperature increase of the hot water by 20F° higher than the heater’s temperature settings. If you experience this type of use you should consider using lower temperature settings to reduce scald hazards.

Should overheating occur or the gas supply fails to shut off, turn off the main manual gas shut off valve to the appliance (see Figure 1).

Water temperature over

DANGER

HOT

BURN

125°F can cause severe burns instantly resulting in severe injury or death.

Children, the elderly and the disabled and are at highest risk of scald injury.

Feel water before bathing or showering.

Temperature limiting devices such as mixing must be installed when required by codes and to ensure safe temperatures at fixtures.

The water heater should be located in an area where the general public does not have access. If a suitable area is not available, a cover should be installed over the thermostat to prevent tampering.

This water heater is equipped with an adjustable thermostat to control water temperature (see Figure 41). Hot water temperatures required for automatic dishwasher and laundry use can cause scald burns resulting in serious personal injury and/or death. The temperature at which injury occurs varies with the person’s age and time of the exposure. The slower response time of children, aged or disabled persons increases the hazards to them. Never allow small children to use a hot-water tap, or to draw their own bath water. Never leave a child or disabled person unattended in a bathtub or shower.

The hot setting shown on the dial is approximately 120°F . This is a good starting point to set the temperature.

Setting the water heater temperature at 120°F will reduce the risk of scalds. Some states require settings at speciﬁ c lower temperatures.

The thermostat settings on the gas control valve are shown in Figure 41.

The water temperature setting was factory set at the lowest (VAC) temperature setting.

HOT WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, cleaning and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the inﬁ rm, or physically/ mentally handicapped. If anyone using hot water ﬁ ts into one of these groups or if there is a local code or state law requiring certain temperature water at the hot-water tap, then you must take special precautions. In addition to using lowest possible temperature setting that satisﬁ es your hot water needs, a means such as a mixing valve, should be used at hot-water taps used by these people or at the water heater (see Figure 6 & Figure 7). Follow manufacturer’s instructions for installation of the valves. Before changing the factory setting on the thermostat, see Table 5 in this manual.

Page 39

GAS CONTROL VALVE/THERMOSTAT

181°F

70°F

ON/OFF SWITCH

TEMPERATURE SETTING DIAL

140°F 155°F 165°F

130°F 110°F

Figure 41

Temperature

Dial Setting

Approximate Temperature

°F

Time to induce a 2nd

and 3rd Degree burn

to adult skin

VERY HOT 181 Less than 1 second

C 165 Less than 1 second

B 155 About 1.5 seconds

A 140 Less than 5 seconds

HOT 130 More than 30 seconds

LOW 110 Normal shower temp

VAC 70 N/A

Table 5

Note: The temperatures indicated are approximate. The

actual temperature of the heated water may vary. The Vacation Setting (VAC) sets the controller at approximately 70°F . This setting is recommended when the water heater is not in use for a long period of time. This effectively turns the controller temperature setting down to a temperature that prevents the water in the water heater from freezing while still conserving energy.

Page 40

FOR YOUR INFORMATION

START UP CONDITIONS

Condensate

Whenever the water heater is ﬁ lled with cold water, some condensate will form while the burner is ON. A water heater may appear to be leaking when in fact the water is condensate. This usually happens when: a. A new water heater is ﬁ lled with cold water for the

ﬁ rst time.

b. Burning gas produces water vapor in water heaters,

particularly high efficiency models where flue temperatures are lower.

c. Large amounts of hot water are used in a short time

and the reﬁ ll water in the tank is very cold.

Moisture from the products of combustion condense on the cooler tank surfaces and form drops of water which may fall onto the burner or other hot surfaces to produce a “sizzling” or “frying” noise. Because of the suddenness and amount of water, condensate water maybe diagnosed as a “tank leak”. After the water in the tank warms up (about 1-2 hours), the condition should disappear. Do not assume the water heater is leaking until there has been enough time for the water in the tank to warm up. An undersized water heater will cause more condensation. The water heater must be sized properly to meet the family’s demands for hot water including dishwashers, washing machines and shower heads. Excessive condensate maybe noticed during the winter and early spring months when incoming water temperatures are at their lowest. Good venting is essential for a gas ﬁ red water heater to operate properly as well as to carry away products of combustion and water vapor (see also “Condensate” section).

Smoke/ Odor

It is not uncommon to experience a small amount of smoke and odor during the initial start-up. This is due to burning off of oil from metal parts, and will disappear in a short while.

Strange Sounds

Possible noises due to expansion and contraction of some metal parts during periods of heat-up and cool-down do not necessarily represent harmful or dangerous conditions. Condensation causes sizzling and popping within the burner area during heating and cooling periods and should be considered normal.

OPERATIONAL CONDITIONS

Smelly Water

Each water heater contains at least one anode rod for corrosion protection of the tank. Certain water conditions will cause a reaction between this rod and the water. The most common complaint associated with the anode rod is one of a “rotten egg smell” in the hot water. The smell is a result of four factors which must all be present for the odor to develop: a. A concentration of sulfate in the supply water. b. Little or no dissolved oxygen in the water. c. A sulfate reducing bacteria which has accumulated

within the water heater (this harmless bacteria is nontoxic to humans).

d. An excess of active hydrogen in the tank. This is

caused by the corrosion protective action of the anode.

Smelly water may be eliminated or reduced in some water heater models by replacing the anode(s) with one of less active material, and then chlorinating the water heater tank and all water lines. Contact the local water heater supplier or service agency for further information concerning an Anode Replacement Kit and this chlorination treatment. If the smelly water persists after the anode replacement and chlorination treatment, we can only suggest that chlorination or aeration of the water supply be considered to eliminate the water problem.

Do not remove the anode leaving the tank unprotected. By doing so, all warranty on the water heater tank is voided.

“AIR” IN HOT-WATER FAUCETS

WARNING

Explosion Hazard

• Flammable hydrogen gases may

be present.

• Keep all ignition sources away from faucet when turning on hot water.

HYDROGEN GAS: Hydrogen gas can be produced in a hot-water system that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely ﬂ ammable and explosive. To prevent the possibility of injury under these conditions, it is recommended that the hot-water faucet, located farthest away, be opened for several minutes before any electrical appliances which are connected to the hot-water system are used (such as a dishwasher or washing machine). If hydrogen gas is present, there will probably be an unusual sound similar to air escaping through the pipe as the hotwater faucet is opened. There must be no smoking or open ﬂ ame near the faucet at the time it is open.

Page 41

PERIODIC MAINTENANCE

GENERAL UPKEEP

Make it a habit to look around the heater, the vent piping, and the hot and cold water pipes. Do not allow any material to be piled up against the heater. Do not place any object on top of the vent pipes. Every 3 - 6 months or as necessary:

• Clean lint from blower, top of heater.

Once per year:

• Inspect the Vent System.

• Burner Operation and Inspection.

• Combustion Chamber for scaling or sooting.

• Temperature-Pressure Relief Valve Test.

• Anode Rod Inspection.

• Flush a pail of water from the heater drain valve, once

per year. If any deﬁ ciencies or abnormalities are encountered during these inspections call a qualiﬁ ed service technician.

Flood damage to a water heater may not be readily visible or immediately detectable. However, over a period of time a ﬂ ooded water heater will create dangerous conditions which can cause death, serious bodily injury, or property damage. Contact a qualiﬁ ed installer or service agency to replace a ﬂ ooded water heater. Do not attempt to repair the unit! It must be replaced!

VENTING SYSTEM INSPECTION

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Flue gases may escape if vent pipe is not properly

connected.

• Be alert for obstructed, sooted or deteriorated vent system to avoid serious injury or death.

• Do not store corrosive chemicals in vicinity of water heater.

• Chemical corrosion of flue and vent system can cause serious injury or death.

• 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.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

At least once a year a visual inspection should be made of the venting system. You should look for:

• Obstructions which could cause improper venting. The

combustion, dilution and ventilation air ﬂ ow must not be obstructed.

• Damage or deterioration which could cause improper

venting or leakage of combustion products.

Chemical vapor corrosion of the ﬂ ue and vent system may occur if air for combustion contains certain chemical vapors. Spray can propellants, cleaning solvents, refrigerator and air conditioner refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, bleach and process chemicals are typical compounds which are potentially corrosive.

If after inspection of the vent system you found sooting or deterioration, something is wrong. Call the local gas utility to correct the problem and clean or replace the ﬂ ue and venting before resuming operation of the water heater.

BURNER OPERATION AND INSPECTION

At least once a year a visual inspection should be made of the main burner and the hot surface igniter assembly for proper ﬂ ame characteristics and ignition sequences. This can be done by removing the outer door and viewing the main burner operation through the viewport on the inner door (see Figure 42). The main burner should provide complete combustion of gas, ignite rapidly, give reasonably quiet operation, and cause no excessive ﬂ ame lifting from the burner ports. If the proper ﬂ ame characteristics are not evident (see Figure 43), make sure that the ﬂ ow of combustion and ventilation air is not blocked. Inspection of exhaust/air intake termination is needed to ensure there is no blockage there.

You should also check for sooting. Soot is not normal and will impair proper combustion. A visual inspection of the main burner and hot surface igniter should also be done at least once a year (see Figure 42).

Soot build-up indicates a problem that requires correction before further use. Turn “OFF” gas to water heater by unplugging the power cord and leave off until repairs are made. Failure to correct the cause of the sooting can result in a ﬁ re causing death, serious injury, or property damage.

MAIN

BURNER

IGNITER

AND

FLAME

ROD

VIEWPORT

Figure 42

Be sure the vent piping is properly connected to prevent escape of dangerous ﬂ ue gases which could cause deadly asphyxiation. Obstructions and deteriorated vent systems may present serious health risk or asphyxiation.

Page 42

BLUE TIPS

LIGHT BLUE INNER

CONES ARE

SATISFACTORY

CORRECT FLAME

SOFT BLUE

INCORRECT

FLAME LAZY

YELLOW

Figure 43

COMBUSTION CHAMBER AND BURNER CLEANING

In the event your burner or burner air openings require cleaning, Call your service agency to remove and clean the burner and correct the problem that required the burner to be cleaned.

HOUSEKEEPING

DANGER

Fire and Explosion Hazard

• Do not place chemical vapor

emitting products near air intake and exhaust terminations.

• Do not use or store flammable vapor products such as gasoline, solvents or adhesives in the same room or area near water heater or other appliance.

• Can cause serious injury or death.

INSTALLED IN SUITABLE AREA: To ensure sufficient ventilation and combustion air supply, proper clearances from the water heater must be maintained. See “Locating The New Water Heater” section. Combustible materials such as clothing, cleaning materials, or ﬂ ammable liquids, etc. must not be placed against or adjacent to the water heater which can cause a ﬁ re.

TEMPERATURE-PRESSURE RELIEF VALVE TEST

operation, make sure that (1) no one is in front of or around the outlet of the T&P valve discharge line, and (2) that water discharge will not cause any property damage, as water may be extremely hot. Use care when operating valve as the valve may be hot. To check the relief valve, lift lever at the end of valve several times (see Figure 44). The valve should seat properly and operate freely. If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold-water inlet to the water heater and drain the water heater, see “Draining And Flushing” section. Replace the T&P valve with a properly rated/sized new one, see “Temperature-Pressure Relief Valve” for instructions on replacement.

Figure 44

If the Temperature-Pressure Relief Valve on the water heater weeps or discharges periodically, it may be due to thermal expansion. Note: Excessive water pressure is the most common cause of temperature-pressure relief valve leakage. Excessive water system pressure is most often caused by “thermal expansion” in a “closed system.” See “Closed Water Systems” and “Thermal Expansion” sections of this manual. The T&P valve is not intended for the constant relief of thermal expansion.

Temperature-pressure relief valve leakage due to pressure build up in a closed system that does not have a thermal expansion tank installed is not covered under the Limited Warranty. Thermal expansion tanks must be installed on all closed water systems.

WARNING

DANGER

• Burn hazard.

• Hot water discharge.

HOT

BURN

It is recommended that the temperature-pressure relief valve be checked to ensure it is in operating condition at least once a year.

When checking the temperature-pressure relief valve

• Keep clear of

temperature-pressure relief valve discharge.

Explosion Hazard

• Temperature-pressure relief

valve must comply with ANSI Z21.22-CSA4.4 and ASME code.

• Properly sized temperature-

pressure relief valve must be installed in opening provided.

• Do not plug, block, or cap the

discharge line.

• Failure to follow this warning

can result in excessive tank pressure, serious injury or death.

Page 43

DRAINING AND FLUSHING

Periodic draining and cleaning of sediment from the tank maybe necessary. It is recommended that the tank be drained and ﬂ ushed every 6 months to remove sediment which may build up during operation. The water heater should be drained if being shut down during freezing temperatures. See “Typical Installation” section in this manual for location of the water heater components described below.

DANGER

• Burn hazard.

• Hot water discharge.

HOT

BURN

• Keep hands clear of drain

valve discharge.

To Flush The Water Heater Storage Tank:

1. Turn “OFF” the electrical supply to the water heater.

2. Ensure the cold-water inlet valve is open.

3. Connect a hose to the drain valve and terminate it to an adequate drain.

4. Ensure the drain hose is secured before and during the entire ﬂ ushing procedure. Flushing is performed with system water pressure applied to the water heater.

5. Open the water heater drain valve to ﬂ ush the storage tank. Caution: Water will be hot.

6. Flush the water heater storage tank to remove sediment and allow the water to ﬂ ow until it runs clean.

7. Close the water heater drain valve when ﬂ ushing is completed.

8. Remove the drain hose.

9. Ensure the heater is full of water.

10. Turn “ON” electrical supply to place water heater back in operation and follow the lighting instructions.

11. Allow the water heater to complete several heating cycles to ensure it is operating properly.

To Drain The Water Heater Storage Tank:

1. Turn “OFF” the electrical supply to the water heater.

2. Turn “OFF” the gas supply at the Main Gas shut-off Valve if the water heater is going to be shut down for an extended period.

3. CLOSE the cold-water inlet valve to the water heater.

4. OPEN a nearby hot-water faucet and leave open to allow for draining.

5. Connect a hose to the drain valve and terminate to an adequate drain.

Note: If the water heater is going to be shut down and drained for an extended period, the drain valve should be left open with hose connected allowing water to terminate to an adequate drain.

6. Close the water heater drain valve when all water in the storage tank has drained.

7. Follow instructions in the “Filling The Water Heater” section.

8. Turn “ON” the gas supply at the main gas shut-off valve.

9. Follow the lighting instructions on the label or see “Lighting Instructions” to restart the water heater.

Caution: Do not turn on power to the water heater unless the tank is full. Open a hot-water faucet and allow the water to run until the air is purged and the water ﬂ ows uninterrupted from the faucet.

Important: When operating a cold tank, condensation can occur and drip on the burner. This should not be confused with a tank leak.

Page 44

ANODE ROD MAINTENANCE

Each water heater contains at least one anode rod, which will slowly deplete (due to electrolysis) prolonging the life of the water heater by protecting the glass-lined tank from corrosion. Adverse water quality, hotter water temperatures, high hot water usage, hydronic heating devices, and water softening methods can increase the rate of anode rod depletion. Once the anode rod is depleted, the tank will start to corrode, eventually developing a leak.

Certain water conditions will cause a reaction between the anode rod and the water. The most common complaint associated with the anode rod is a “rotten egg smell” produced from the presence of hydrogen sulﬁ de gas dissolved in the water. Important: Do not remove this rod permanently as it will void any warranties. A special anode rod may be available if water odor or discoloration occurs. Note: This rod may reduce but not eliminate water odor problems. The water supply system may require special ﬁ ltration equipment from a water conditioning company to successfully eliminate all water odor problems. Artiﬁ cially softened water is exceedingly corrosive because the process substitutes sodium ions for magnesium and calcium ions. The use of a water softener may decrease the life of the water heater tank. The anode rod should be inspected after a maximum of three years and annually thereafter until the condition of the anode rod dictates its replacement (see Figure 45).

Note: Artiﬁ cially softened water requires the anode rod to be inspected annually. The following are typical (but not all) signs of a depleted anode rod:

• The majority of the rods diameter

is less than 3/8 in. .

EXPOSED SUPPORT WIRE

• Signiﬁ cant sections of the support

wire (approx. 1/3 or more of the

anode rod’s length) are visible. If the anode rod show signs of either or both it should be replaced. Note: Whether re-installing or replacing the anode rod, check for any leaks and immediately correct if found.

To replace the anode:

1. Turn off gas supply to the water heater.

2. Shut off the water supply and open a nearby hot water

faucet to depressurize the water tank.

3. Drain approximately 5 gallons of water from tank. (Refer

to “Draining And Flushing” for proper procedures). Close drain valve.

4. Remove old anode rod.

5. Use Teﬂ on® tape or approved pipe sealant on threads

and install new anode rod.

6. Turn on water supply and open a nearby hot water

faucet to purge air from water system. Check for any leaks and immediately correct any if found.

7. Restart the water heater as directed in this manual.

See the “Reference Parts Listing” for anode rod location.

PITTED ANODE ROD

EXPOSED SUPPORT WIRE

Figure 45

Figure 46

Page 45

LEAKAGE CHECKPOINTS

SERVICE

If a condition persists or you are uncertain about the operation of the water heater contact a service agency. Use this guide to check a “leaking” water heater. Many suspected “leakers” are not leaking tanks. Often the source of the water can be found and corrected.

If you are not thoroughly familiar with gas codes, your water heater and safety practices, contact your gas supplier or qualiﬁ ed installer to check the water heater.

Ensure the venting is properly attached and secured.

Never use this water heater unless it is completely ﬁ lled with water. To prevent damage to the tank, the tank must be ﬁ lled with water. Water must ﬂ ow from the hot-water faucet before turning “ON” gas to the water heater.

C. Water at the blower assembly is water vapo r which

has condensed out of the combustion products. This is caused by a problem in the vent. A drainage port is included at the vent pipe connection.

D. *Condensation may be seen on pipes in humid weather

or pipe connections may be leaking. E. *The anode rod ﬁ tting may be leaking. F. Small amounts of water from temperature-pressure

relief valve may be due to thermal expansion or high

water pressure in your area. G. *The temperature-pressure relief valve may be leaking

at the tank ﬁ tting. H. Water from a drain valve may be due to the valve being

slightly opened. I. *The drain valve may be leaking at the tank ﬁ tting. J. Combustion products contain water vapo r which can

condense on the cooler surfaces of the tank. Droplets

form and drip onto the burner. This is common at the

time of start-up after installation and when incoming

water is cold. K. Water in the water heater bottom may be from

condensation, loose connections, or the relief valve.

DO NOT replace the water heater until a full inspection

of all possible water sources is made and necessary

corrective steps taken.

Leakage from other appliances, water lines, or ground seepage should also be checked. * To check where threaded portion enters tank,

insert cotton swab between jacket opening and ﬁ tting. If cotton is wet, follow the instructions in the “Draining And Flushing” section and then remove ﬁ tting. Put pipe dope or Teﬂ on and replace. Then follow the instructions in the “Filling The Water Heater” section.

tape on the threads

Figure 47

Page 46

REFERENCE PARTS LISTING

Replacement parts may be ordered through your plumber or the local distributor. When ordering replacement parts, always have the following information ready:

1. Model, Serial and Product number

2. Type of gas

3. Item number

4. Parts description

1 Termination Elbow with Rodent Screen 2 *Vent Pipe 3 *Coupling (if required) 4 CPVC Vent Pipe (5 ft. supplied) 5 *Vent Pipe Elbow (long radius) 6 *CPVC Vent Pipe Elbow 8 Cold-Water Inlet Nipple/Diptube 9 **Combo Heating System Supply Outlet

(Optional) 10 T&P Valve 11 * Discharge Pipe 12 **Combo Heating System Return Inlet

(Optional) 13 Gas Control Valve/Thermostat

(Honeywell) 14 Gas Valve Electronic Control Module

And Cover (Honeywell)

3 4

15 Drain Valve 16 Outer Gas Door 17 Manifold Door Assembly (behind

outer door) (see Figure 3) (see also

Figure 50) 18 *Metal Drain Pan 19 *Floor Drain 26 Anode (under cap) 27 Bafﬂ e Assembly 28 Hot-Water Outlet Nipple/Anode 29 Sound Suppressor (Tee ﬁ tting) 31 ****Rubber Coupling (see Figure 4)

(see also Figure 51) 32 Gear Clamp (see Figure 4) (see also

Figure 51) 33 ***Blower with Power Cord (see Figure

4) (see also Figure 51) 34 Air Duct Adapter 35 Air Inlet Snorkel 36 Air Duct 38 Flame Sensor Rod (see Figure 3) (see

also Figure 50)

39 Sheet Metal Burner (see Figure 3) (see

also Figure 50)

40 Gas Oriﬁ ce (see Figure 3) (see also

Figure 50)

41 Gas Manifold (see Figure 3) (see also

Figure 50)

42 Hot-Surface Igniter (see Figure 3) (see

also Figure 50)

43 Manifold Door Gasket (see

Figure 3) (see also Figure 50)

44 Manifold Door (see Figure 3) (see also

Figure 50)

45 Two Piece Grommet With Clip (see

Figure 3) (see also Figure 50)

46 Viewport (see Figure 3) (see also

Figure 50)

47 Air Tubing (Intake) (see Figure 4) (see

also Figure 51)

48 Blower High Limit Switch (see Figure

4) (see Figure 51)

49 Intake Air Pressure Switch (NC)

(inside box) (see Figure 4) (see also Figure 51)

50 Capacitor (see Figure 4) (see also

Figure 51)

51 Air Tubing (Exhaust) (see Figure 4)

(see also Figure 51)

52 Exhaust Air Pressure Switch (NO)

(inside box) (see Figure 4) (see also Figure 51)

*, **, ***, **** see notes on following

page

AIR INLET PIPING

EXHAUST OUTLET

PIPING

13 14

16 17

Front View

Figure 48 Figure 49

Rear View

Page 47

Natural gas and Propane (LP) main burner with igniter assembly. NG burner shown. LP burner similar but with drain hole (item 17 in Figure 1).

Flare Nut ††

Figure 50

Shown with Junction Box Cover removed for clarity.

Figure 51

Notes:

* Items not supplied with the water heater. ** The side recirculation loop connections may not be

used as the primary water inlet and outlet connections.

See “Combo Heating Inlet And Outlet Side Taps”. *** Caution harness has 120 VAC In operation. **** See “Vent Pipe Installation” for more information.

† The oriﬁ ce on Natural gas models has Right-hand

thread, the oriﬁ ce on Propane (LP) models has Left-

hand thread. †† For Natural gas models the Flare Nut has Right-hand

thread. For Propane (LP) models the Flare Nut has

Left-hand thread.

Page 48

TROUBLESHOOTING GUIDELINES

These guidelines should be utilized by a qualiﬁ ed service

agent.

RESETTING THE HEATER CONTROL

• Soft lockouts as diagnosed by the system error codes

require the gas control to be reset.

• To reset the control, slide the “ON/OFF” switch to the

“OFF” position. Wait for 10 seconds and move the switch back to the “ON” position.

• If the problem that caused the control to lock out has

not been corrected, the control will remain or again go back into lockout.

LOCKOUTS

Soft Lockout

• Occurs when a system safety device trips to break the

sequence of operation. The control will try to start the system in a timed basis but will not reinstate operation until the failure is corrected.

Hard Lockout

• Occurs when the main controller fails and must be

replaced.

IGNITION STATE AND TIMING

IGNITION STATE TIMING

Pre-purge

Hot Surface Igniter (HSI) Warmup

Ignition Activation Period (IAP)

Flame Recognition Period (FRP)

Trial For Ignition IAP + FRP

Flame Stabilization Period

Inter-purge 30 seconds

Flame Failure Response Time

Post-purge 30 seconds

Pressure Switch (PS) Prove Period

Pressure Switch (PS) Fault Delay (failed open/closed)

Soft Lockout 20 minutes

Energy Cut Off (ECO) Limit Lockout

5 seconds (NG models)

15 seconds (LP models)

10 seconds

3.5 seconds maximum

0.5 second

Not Applicable

2 seconds max (@ 1uA ﬂ ame current)

2 minutes

Indeﬁ nite

Page 49

SYSTEM STATUS AND ERROR CODES

The micro-controller inside the gas control monitors the ignition sequence, temperature settings, and overall operation of the heater. If any of these parameters does not operate properly the controller will shut down the water heater, diagnose the failure and ﬂ ash an error code. The table below lists the System Status Codes for the Honeywell control. Refer to it and to the “Ignition State And Timing” to diagnose the problem before attempting corrective action.

Corrective

LED Flash Sequence Control Status

Action

Number

Short ﬂ ash once every four seconds IDLE (no call for heat, no fault conditions) 1

“Heartbeat”, alternates bright/dim Call For Heat (no fault conditions) 2

One Flash, three second pause Low Flame Signal (control continues to operate) 3

Two Flash, three second pause Pressure Switch Failed Closed 4

Three Flash, three second pause Pressure Switch Failed Open 5

Four Flash, three second pause

ECO (Energy Cut Off) Limit Lockout thermostat temperature limit was exceeded.

Five Flash, three second pause Flame Out Of Sequence 7

Soft Lockout

Six-One Flash, three second pause

- Retry Limit

- Failed Trial For Ignition

Soft Lockout

Six-Two Flash, three second pause

- Recycle Limit

- Pressure Switch/ High Limit opened

Soft Lockout

Six-Three Flash, three second pause

- Recycle Limit

- Flame Lost

Six-Four Flash, three second pause

Soft Lockout

- Flame out of Sequence Sensed

Seven Flash, three second pause N/A (Flammable Vapor Sensor Lockout) 12

Eight-One Flash, three second pause N/A (Flammable Vapor Sensor Fault Detected) 13

Eight-Two Flash, three second pause Temperature Sensor Fault Detected 14

Eight-Three Flash, three second pause Electronics Fault Detected 15

Eight-Four Flash, three second pause Valve Fault Detected 16

LED continuously “ON” Hard Lockout 17

READING THE LED FLASH SEQUENCE.

The LED indicator light is active when the gas valve/thermostat is in operation. The light will normally show a ﬂ ash sequence of a short ﬂ ash once every four seconds or a “Heartbeat” of alternating bright/dim. Multiple ﬂ ash codes indicate an error and can be read as follows: Example: Corrective Action Number 9, Six-Two Flash, three second pause. For this code, the LED indicator light will make six bright ﬂ ashes, pause for one second and then make two more bright ﬂ ashes. The LED will pause for three seconds and repeat the six-two cycle of ﬂ ashes.

Page 50

CORRECTIVE ACTIONS

See the table below for corrective actions corresponding to the Corrective Action Number in the “System Status And Error Codes”

section above. If following those corrective actions does not resolve the error, refer to “Other Symptoms“ table later in

this manual.

Corrective

Action

Corrective Action

Number

1 Normal operation, no action necessary.

Normal operation, no action necessary.

1. Flame rod not properly seated in flame, reposition rod.

2. Clean flame sensor rod with fine steel wood to avoid lock-out.

1. Check that blower operates and does not have any blockages.

2. Check that all wiring is correct.

3. Ensure the air pressure sensing tubes are properly connected and not kinked or damaged.

4. Ensure the air pressure switch is correct and the air pressure switch (N.O.) is not bypassed

(jumpered).

5. Turn power to the unit “OFF” – check for continuity of the air pressure switch (N.O.) with wires disconnected;

a. If the pressure switch contacts show continuity (closed circuit), replace the pressure switch, b. If the pressure switch contacts are open and all wiring is correct, replace the Gas Control.

1. Ensure the blower is running - check for 120 VAC to the blower when the heating cycle begins.

a. If the Gas Control does not energize the blower - replace the Gas Control. b. If the blower fails to start when energized:

i. Turn power to the heater “OFF” – check if the capacitor is connected; ii. Turn power to the heater “OFF” – check the capacitor rating ( 3uF +/-5%); iii. Turn power to the heater “OFF” - replace the blower assembly.

2. Ensure the air pressure sensing tubes are properly connected and not kinked or damaged;

3. Check continuity of the vent temperature limit switch – replace switch if contact remain open.

4. Check continuity of the air pressure switch (N.C.) – replace switch if contact remain open.

5. Ensure the correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure maximum number of elbows or equivalent feet of both pipes was not exceeded.

6. Ensure there are no obstructions in the exhaust and air intake pipes.

7. If there are excessive restrictions in the air intake pipe the air pressure switch (N.C.) will open.

8. Check air pressure switch performance - Check blower vacuum with a manometer - Compare with air pressure switch (N.O.) setting. If the air pressure switch proves defective – replace the air pressure switch (N.O.).

9. If the air pressure switch (N.O.) performance test results prove the air pressure switch is working properly, and all other steps are followed, and fault code persist – replace the control.

Resetting the ECO (Energy Cut-Out) requires manual intervention. It cannot be reset by cycling power to the control. Reset Procedure

1. Manual reset is performed by turning the set point knob to lowest set point position for a minimum of 10 seconds and then return it to the desired set point.

2. The manual reset of the ECO can only be performed 2 times, after the ECO trips a third time, the gas valve will enter a hard lock out where the gas control will need to be replaced.

1. Turn the power “OFF” for 10-20 seconds then “ON” again to clear the fault code.

2. Flame rod not properly seated in flame, reposition rod.

3. Clean flame sensor rod with fine steel wood to avoid lock-out.

4. Replace the control if the fault code persists.

Page 51

Corrective

Action

Corrective Action

Number

1. Gas supply is turned off or gas pressure is too low. Ensure supply pressure and manifold gas pressures are within requirements. Manifold pressure is nonadjustable, if gas supply pressure proves correct and manifold pressure is off by more than 0.3” WC replace the control.

2. Low supply voltage - should be 115 - 125 VAC

3. Ensure flame sensor is making good contact with the burner flame and flame is steady.

4. Ensure flame sensor is clean, use ultra- fine steel wool to clean flame sensor.

5. Ensure the Hot Surface Igniter is positioned properly to provide consistent ignition.

6. Check for any cracks in igniter assembly ceramic insulators - replace igniter assembly if damaged.

7. Check resistance of igniter at room temperature (at the plug). Replace the igniter if resistance is not within 42-76 ohms at room temperature.

8. Ensure correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure maximum number of elbows or equivalent feet of both pipes was not exceeded.

1. Ensure the blower is running - check for 120 VAC to the blower when the heating cycle begins.

a. If the Gas Control does not energize the blower - replace the Gas Control. b. If the blower fails to start when energized:

i. Turn power to the unit “OFF” – check if the capacitor is connected; ii. Turn power to the unit “OFF” – check the capacitor rating ( 3uF +/-5%); iii. Turn power to the unit “OFF” - replace the blower assembly.

2. Ensure the air pressure sensing tubes are properly connected and not kinked or damaged;

3. Check continuity of the vent temperature limit switch – replace switch if contacts remain open.

4. Check continuity of the air pressure switch (N.C.) – replace switch if contacts remain open.

5. Ensure correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure maximum number of elbows or equivalent feet of both pipes was not exceeded.

6. Ensure there are no obstructions in the exhaust and air intake pipes.

7. If there are excessive restrictions in the air intake pipe the air pressure switch (N.C.) will open.

9. If the air pressure switch (N.O.) performance test results prove the air pressure switch is working properly, and all other steps are followed, and fault code persist – replace the control.

1. Gas supply is turned “OFF” or gas pressure is too low. Ensure supply pressure and manifold gas pressures are within requirements. Manifold pressure is nonadjustable. If supply pressure proves correct and manifold, pressure is off by more than 0.3” WC replace the control.

2. Low supply voltage - should be 115 - 125 VAC

3. Ensure flame sensor is making good contact with the burner flame and flame is steady.

4. Ensure the flame sensor is clean, use ultra-fine steel wool to clean flame sensor.

5. Ensure the Hot Surface Igniter is positioned properly to provide consistent ignition.

6. Check for any cracks in igniter assembly ceramic insulators - replace igniter assembly if damaged.

7. Check resistance of igniter at room temperature (at the plug). Replace the igniter if resistance is not within 42-76 ohms at room temperature.

8. Ensure correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure maximum number of elbows or equivalent feet of both pipes was not exceeded.

1. Turn the power “OFF” for 10-20 seconds then “ON” again to clear the fault code.

2. Replace the control if fault code persists.

12 N/A – If this happens replace the gas control.

13 N/A – If this happens replace the gas control.

1. Turn the power “OFF” for 10-20 seconds then “ON” again to clear the fault code.

2. Replace the control if the fault code persist.

1. Turn the power “OFF” for 10-20 seconds then “ON” again to clear the fault code.

2. Replace the control if the fault code persist.

1. Turn the power “OFF” for 10-20 seconds then “ON” again to clear the fault code.

2. Replace the control if the fault code persist.

17 1. Control has failed. If resetting the control does not clear the fault code, replace the control.

Page 52

OTHER SYMPTOMS

Problem Possible Cause(S) Corrective Action

Insufﬁ cient

Hot Water

Water Is

Too Hot

1. Thermostat set too low

2. Leaking faucets/Wasted hot water

3. Wrong piping connections

4. Water heater too small

5. Sediment or lime in tank

6. Long runs of exposed piping

7. Hot-water piping in outside wall

1. Thermostat is set too high

2. Heater stacking (Failure to install the proper restrictive screens)

1. Turn temperature knob to higher setting

2. Repair faucets

3. Correct piping: dip tube must be in cold inlet

4. Install adequate heater

5. Drain/flush-provide water treatment if needed

6. Insulate piping

7. Insulate piping

1. Turn temperature knob to lower setting

2. Ensure correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure proper restrictive screens were used.

Slow Hot

Water Recovery

Drip From

Relief Valve

1. Thermostat set too low

2. Wrong piping connection

3. Wasted hot water

4. Heater too small

1. Heater stacking (Failure to install the proper restrictive screens)

2. Closed water system

3. Pressure build-up

4. Improperly seated valve

1. Turn temperature knob to higher setting

1. Correct piping-dip tube must be in cold inlet

2. Advise customer

3. Install adequate heater

1. Ensure the correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure the proper restrictive screens were used.

2. See “Thermal Expansion” section

3. Use a pressure-reducing valve and relief valve

4. Check Relief valve for proper operation

5. (Do Not plug T&P valve)

Smelly Water

1. Sulfides in water supply

2. Bacteria in water supply

3. Incompatible anode

1. Chlorination procedure

2. Chlorination procedure

3. Replace with anode appropriate for water conditions

Condensation

1. Filling the new water heater for the first time

2. Water dripping from blower assembly

1. Normal operation: the condensation should disappear after heater warms up

2. Install condensate hose to drain port on the rubber coupling

Water Leakage 1. Check “Leakage Checkpoints”

Exhaust Pipe

Too Hot

1. Failure to use correct size of exhaust and air intake pipes;

2. Failure to install the restrictive screens;

3. Blower high limit switch fails to open - switch defective

1. Ensure the correct size of exhaust and air intake pipes were used per the instruction manual for vent length. Ensure maximum number of elbows or equivalent feet of both pipes was not exceeded.

2. Ensure that the proper restrictive screens were used.

3. Replace blower high limit switch

Page 53

LIMITED WARRANTY

COMMERCIAL

WATER HEATER

LIMITED WARRANTY

EFFECTIVE

For 3 Years, in the event of a tank leak, we will repair or, at our

discretion, replace the defective water heater.

For 1 Year, in the event of part failure, we will repair or, at our

discretion, replace the defective part.

We warrant this product against defects in materials or workmanship as described in this document if installed within the United States or Canada and provided the product remains at its original place of installation.

Warranty coverage begins the date of installation OR the date of manufacture if installation cannot be veri¿ ed.

WHAT’S COVERED

Subject to these terms, in the event of defect in materials and/or workmanship resulting in a tank leak during the ¿ rst three years, we will:

• Replace the water heater should the tank leak.

Subject to these terms, in the event of a defect in materials and/or workmanship appearing during the ¿ rst year, we will:

• Repair or, at our discretion, replace any part of the water heater covered under this limited warranty excluding parts subject to normal maintenance (Example: non-electronic anode rod, ¿ lter, etc)

Service/labor, shipping, delivery, installation, handling or any other costs are not covered at any time under this warranty.

Any replacement part or product will be warranted only for the unexpired portion of the original water heater’s limited warranty period.

If an identical model is no longer available due to a change in law, regulation, or standard, we will replace the product with one having comparable capacity and input. In these instances, the owner will have the option of paying the difference between what was paid for the original model and the new model with the additional features, or receiving a refund of the portion of the purchase price, on a pro-rata basis allocable to the unexpired portion of the warranty.

WHAT’S NOT COVERED

• Problems caused by improper: gas supply line sizing, gas type, venting, connections, combustion air, voltage, wiring, or fusing

• Failure to follow applicable codes

• Failure to follow printed instructions

• Abuse, misuse, accident, ¿ re, À ood, Acts of God

• Improper installation, sizing, delivery, or maintenance

• Claims related to rust, noise, smell, or taste of water

• Failure to conduct authorized factory start up if required

• Alterations to the water heater

• Non-outdoor heaters installed outdoors

• Damages due to a failure to allow for thermal expansion

• Heat exchanger failure due to lack of adequate / proper supply of water

• Heaters moved from their original location

• Service trips to explain proper installation, use, or maintenance of the product/unit or to describe compliance requirements under applicable codes and regulations

• Charges related to accessing your heater including but not limited to door/wall removal, equipment rental, etc.

• Replacement parts after expiration of this warranty

LIMITATIONS

NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY, THIS IS YOUR SOLE AND EXCLUSIVE WARRANTY. ALL OTHER WARRANTIES INCLUDING A WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE ARE EXPRESSLY DISCLAIMED. SELLER SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, SPECIAL, PUNITIVE OR OTHER INDIRECT DAMAGES. TOTAL LIABILITY ARISING AT ANY TIME SHALL NOT EXCEED THE PURCHASE PRICE PAID WHETHER BASED ON CONTRACT, TORT, STRICT LIABILITY OR ANY OTHER LEGAL THEORY.

SERVICE INQUIRIES:

For service inquiries call the telephone number listed below. Be prepared to provide the following information:

name, address, and telephone number; the model and serial number of the water heater; proof of installation; and a clear description of the problem.

For your records, ¿ ll in the product:

Serial: ___________________ Model: ___________________ U.S. Customers: Canadian Customers:

A. O. Smith Corporation A. O. Smith Enterprises 500 Tennessee Waltz Parkway 599 Hill St. West Ashland City, Tennessee 37015 Fergus, ON N1M 2X1 800-527-1953 888-479-8324

Page 54

NOTES

Page 55

NOTES

Page 56

500 Tennessee Waltz Parkway,

Ashland City, TN 37015

• Technical Support: 800-527-1953

• Parts: 800-433-2545

• Fax: 800-644-9306

www.hotwater.com

A.O. Smith BPD-80 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual