A.O. Smith GCF-40, GCF-50, GCFL-40, GCFL-50 Installation Manual

Installation Instructions and Use & Care Guide

RESIDENTIAL GAS WATER HEATERS

FVIR

(FLAMMABLE VAPOR IGNITION RESISTANT)

This water heater complies with ANSI Z21.10.1-current edition regarding the accidental or unintended ignition of ﬂ ammable vapors, such as those emitted by gasoline.

GAS WATER HEATER

FOR POTABLE WATER HEATING ONLY.

NOT FOR USE IN MOBILE HOMES.

For Your Safety

AN ODORANT IS ADDED TO THE GAS USED

BY THIS WATER HEATER.

• Safety Instructions

• Installation

• Operation

INSTALLER:

• AFFIX THESE INSTRUCTIONS TO OR ADJACENT TO THE WATER HEATER.

OWNER:

• RETAIN THESE INSTRUCTIONS AND WARRANTY FOR FUTURE REFERENCE. RETAIN THE ORIGINAL RECEIPT AS PROOF OF PURCHASE.

WARNING: Gas leaks can not always be detected by smell.

Gas suppliers recommend that you use a gas detector approved by UL or CSA.

For more information, contact the your gas supplier. If a gas leak is detected, follow the “WHAT TO DO IF YOU

SMELL GAS” instructions.

• Care and Maintenance

• Troubleshooting

• Parts List

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.

ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED.

IF YOU ARE UNSUCCESSFUL, CONTACT RESIDENTIAL TECHNICAL ASSISTANCE AT 1-888- 479-8324 OR WWW.HOTWATERCANADA.CA .

PRINTED IN THE U.S.A 1213 PART NO. 319555-001

TABLE OF CONTENTS

Water Heater Safety ..........................................................................................................................................................................1 -2

Safe Installation, Use and Service ...................................................................................................................................................... 3

Safety Precautions ............................................................................................................................................................................ 3-4

Typical Installation ............................................................................................................................................................................... 5

Installing Your Gas Water Heater ..................................................................................................................................................... 6-8

Important Information About Your Water Heater ...................................................................................................................... 6

Consumer Information ............................................................................................................................................................. 6

Consumer Responsibilities ...................................................................................................................................................... 6

Unpacking the Water Heater ................................................................................................................................................... 6

Location Requirements ......................................................................................................................................................... 6-7

Site Locations .......................................................................................................................................................................... 7

Clearances and Accessibility ................................................................................................................................................... 8

Gas Supply ....................................................................................................................................................................................... 9-10

Gas Requirements .................................................................................................................................................................... 9

Gas Piping ............................................................................................................................................................................... 9

Gas Pressure ........................................................................................................................................................................... 9

Gas Pressure Testing ............................................................................................................................................................... 9

LP Gas Only ........................................................................................................................................................................... 10

Combustion Air and Ventilation ................................................................................................................................................... 10-13

Unconfined Space .................................................................................................................................................................. 10

Confined Space ......................................................................................................................................................................11

All Air from Inside the Building ................................................................................................................................................11

All Air from Outdoors ...............................................................................................................................................................11

Louvers and Grilles ................................................................................................................................................................ 12

Vent Pipe System .................................................................................................................................................................. 12

Draft Hood Installation ........................................................................................................................................................... 12

Vent Pipe Size ....................................................................................................................................................................... 12

Vent Connectors ............................................................................................................................................................... 12-13

Chimney Connection .............................................................................................................................................................. 13

Vertical Exhaust Gas Vent ..................................................................................................................................................... 13

Vent Size Verification ............................................................................................................................................................. 14

Water System Piping ..................................................................................................................................................................... 14-16

Piping Installation .............................................................................................................................................................. 14-15

Closed System/Thermal Expansion ....................................................................................................................................... 15

Temperature & Pressure Relief Valve .................................................................................................................................... 15

T&P Relief Valve and Pipe Insulation .................................................................................................................................... 16

Important Information About this Water Heater ..............................................................................................................................17

Operating Your Water Heater ....................................................................................................................................................... 18-24

Lighting Instructions ............................................................................................................................................................... 18

Checking the Draft ................................................................................................................................................................. 19

Burner Flames ....................................................................................................................................................................... 19

Emergency Shutdown ............................................................................................................................................................ 19

Water Temperature Regulation ......................................................................................................................................... 19-20

Water Temperature Adjustment ............................................................................................................................................. 20

Operating Modes and Settings .............................................................................................................................................. 20

Electrical Connections/Wiring Diagram ................................................................................................................................. 21

Operational Conditions .......................................................................................................................................................... 22

Draining and Flushing ............................................................................................................................................................ 23

Routine Preventive Maintenance ........................................................................................................................................... 23

Temperature and Pressure Relief Valve ................................................................................................................................ 24

Maintenance of Your Water Heater .............................................................................................................................................. 24-28

Replacement Parts ................................................................................................................................................................ 24

Removing the Burner Manifold/Burner Assembly .................................................................................................................. 25

Replacing the Pilot/Igniter - Flame Sense Assembly ............................................................................................................. 25

External Inspection & Cleaning of the Base-Ring Filter ........................................................................................................ 25

Cleaning the Combustion Chamber and Flame-arrestor ....................................................................................................... 26

Replacing the Manifold Burner/Assembly ......................................................................................................................... 26-27

Igniter System ........................................................................................................................................................................ 27

Testing the Igniter System ..................................................................................................................................................... 27

Removing and Replacing the Gas Control Valve/Thermostat ............................................................................................... 27

FVIR System Operational Checklist ...................................................................................................................................... 28

Troubleshooting Checklist ........................................................................................................................................................... 28-29

Status Light Troubleshooting Flowchart .................................................................................................................................... 30-31

Sequence of Operation Chart ........................................................................................................................................................... 32

Repair Parts Illustration ................................................................................................................................................................ 33-34

Notes .... .......................................................................................................................................................................................... 35-36

Warranty .......................................................................................................................................................................................... 37-38

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 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.

IMPORTANT DEFINITIONS

• Qualified Technician: A qualified technician must be licensed/authorized to install gas water heaters and to work with natural/L.P. gas,

gas/air venting, and gas components. He or she must also have appropriate trade knowledge and a thorough understanding of the requirements of the Natural Gas and Propane Installation Code (CAN/CSA B149.1-current edition) as it relates to the installation of gas fired water heaters. The qualified technician must also be familiar with the design features and use of flammable vapor ignition resistant water heaters, and have a thorough understanding of this instruction manual.

• Service Agency: Employees/representatives of a service agency must also be licensed/authorized to install gas water heaters and to

work with natural/L.P. gas, gas/air venting, and gas components. Its employees and representatives must also have appropriate trade knowledge and a thorough understanding of the requirements of the Natural Gas and Propane Installation Code (CAN/CSA B149.1current edition) as it relates to the installation of gas fired water heaters. The service agency employees/representatives must also have a thorough understanding of this instruction manual, and be able to perform repairs strictly in accordance with the service guidelines provided by the manufacturer.

• Gas Supplier: A gas supplier is the natural gas or propane utility or service that 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.

SAFETY PRECAUTIONS

WARNING

FIRE AND EXPLOSION HAZARD

FLAMMABLES

Flammable Vapors

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 of 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.

Read and follow water heater warnings and instructions.

Fire or Explosion Harzard

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 Natural or LP 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.

TYPICAL INSTALLATION

GET TO KNOW YOUR WATER HEATER - GAS MODELS

A Vent Pipe

B Draft Hood C Anode (Not Shown) D Hot Water Outlet E Insulation F Gas Supply Piping G Manual Gas Shut-off Valve H Ground Joint Union I Sediment Trap

* INSTALL IN ACCORDANCE WITH LOCAL CODES.

* SEDIMENT TRAP AS REQUIRED BY LOCAL CODES.

TO VENT

TERMINATION ON

ROOF

INSTALL THERMAL EXPANSION

TANK IF WATER HEATER IS

INSTALLED IN A CLOSED

J Inner Door K Outer Door L Union M Inlet Water Shut-off Valve N Cold Water Inlet O Inlet Dip Tube P Temperature-Pressure Relief Valve Q Rating Plate R Flue Bafﬂ e

WATER SYSTEM

VACUUM RELIEF

*INSTALL PER

LOCAL CODES

VALV E

S Gas Control Valve/Thermostat T Drain Valve U Pilot and Main Burner V Flue W Metal Drain Pan X Igniter Wire Y Base-Ring Filter Z FV Sensor AA Transformer BB Flue Damper

(S) GAS CONTROL VALVE/

THERMOSTAT

OFF

HOT



LOW

GAS CONTROL/TEMPERATURE KNOB

(U) MANIFOLD/BURNER ASSEMBLY

IGNITER WIRE

PILOT ASSEMBLY

STATUS

Y R

HOT



VAC

STATUS LIGHT

MAIN BURNER

* ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS.

MANIFOLD TUBE

MANIFOLD DOOR

DISCHARGE PIPE

(DO NOT CAP OR PLUG.)

12” (300 mm) MAXIMUM

AIR GAP

FLOOR DRAIN

INSTALLING YOUR GAS WATER HEATER

Important Information About This Water Heater

This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor ignition incident. New technology used in meeting these standards makes this product more sensitive to installation errors or improper installation environments. Please review the Installation Checklist found at the end of the installation instructions section and make any required installation upgrades or changes.

Consumer Information

This water heater is design-certified by CSA International as a Category I, non-direct vented water heater which takes its combustion air either from the installation area or from air ducted to the unit from the outside.

The installation must conform with these instructions and the local code authority having jurisdiction. In addition, installations shall comply with the Natural Gas and Propane Installation Code (CAN/CSA-B149.1-current edition). This publication is available from the Canadian Standards Association, 5060 Spectrum Way, Suite 100 Mississauga, Ontario, Canada L4W 5N6.

Check your phone listings for the local authorities having jurisdiction over your installation.

Consumer Responsibilities

Unpacking the Water Heater

WARNING

Excessive Weight Hazard

Use two or more people to move and install the water heater. Failure to do so can result in injury (including back injury).

IMPORTANT: Do not remove any permanent instructions, labels, or the data label from either the outside of the water heater or on the inside of water heater panels.

• Remove exterior packaging and place installation components aside.

• Inspect all parts for damage prior to installation and start-up.

• Completely read all instructions before attempting to assemble and install this product.

• After installation, dispose of/recycle all packaging materials.

Location Requirements

This manual has been prepared to acquaint you with the installation, operation, and maintenance of your gas water heater and provide important safety information in these areas.

Read all of the instructions thoroughly before attempting the installation or operation of this water heater.

Do not discard this manual. You or future users of this water heater will need it for future reference.

Service to the FVIR System should only be performed by a qualified technician.

Examples of a qualified technician include: licensed plumbers, authorized gas company personnel, and authorized service personnel.

IMPORTANT: The manufacturer and seller of this water heater will not be liable for any damages, injuries, or deaths caused by failure to comply with the installation and operating instructions outlined in this manual.

If you lack the necessary skills required to properly install this water heater, or you have difficulty following the instructions, you should not proceed but have a qualified technician perform the installation of this water heater.

A rating plate identifying your water heater can be found on the front of your water heater. When referring to your water heater, always have the information listed on the rating plate readily available. Retain your original receipt as proof of purchase.

WARNING

Carbon Monoxide Poisoning Hazard

Do not install in a mobile home. Doing so can result in carbon monoxide poisoning and death.

The Flammable Vapor (FV) Sensor is designed to reduce the risk of flammable vapor-related fires. Flammable liquids (such as gasoline, solvents, propane, etc,) emit flammable vapors which can be ignited by a gas water heater’s spark igniter or main burner. The resulting flashback and fire can cause death or serious burns to anyone in the area.

This heater is equipped with an FV sensor for detecting the presence of flammable vapors. When the sensor detects those vapors, the unit will shut down and not operate. Should this happen, please refer to the troubleshooting guide. Even though this water heater is a flammable vapors ignition resistant water heater and is designed to reduce the chances of flammable vapors being ignited, gasoline and other flammable substances should never be stored or used in the same vicinity or area containing a gas water heater or other open flame or spark producing appliance. In the event the FV Sensor does not prevent the ignition of flammable vapors, the FVIR System is designed to reduce the risk of flammable vapor-related fires.

If flammable liquids or vapors have spilled or leaked in the area of the water heater, leave the area immediately and call the fire department from a neighbor’s home. Do not attempt to clean the spill until all ignition sources have been extinguished.

FV Sensor

FIGURE 1.

The patented system protects your family by trapping the burning vapors within the water heater combustion chamber through the special flame-arrestor. The burning vapors literally “burn themselves out” without escaping back into the room. In the event of a flammable vapor incident, the FVIR System disables the water heater by shutting off the gas supply to the water heater’s burner and pilot, preventing re-ignition of any remaining flammable vapors in the area. This will not prevent a possible fire/ explosion if the igniter activates and flammable vapors have accumulated in the combustion chamber with the pilot light off. If you suspect a flammable vapor incident has occurred, do not use this appliance. Do not attempt to light this appliance, if you suspect flammable vapors have accumulated inside or outside the appliance. Immediately call a qualified technician to inspect the appliance. Water heaters subjected to a flammable vapors incident will show a discoloration on the flame-arrestor and require replacement of the entire water heater.

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 of 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.

Read and follow water heater warnings and instructions

Do not use or store flammable products such as gasoline, solvents, or adhesives in the same room or area near the water heater. If such flammables must be used, all gas burning appliances in the vicinity must be shut off and their pilot lights extinguished. Open the doors and windows for ventilation while flammable substances are in use.

Flammable Vapors

WARNING

Fire or Explosion Hazard

• Read instruction manual before installing, using or servicing water heater.

• Improper use may result in fire or explosion.

• Maintain required clearances to combustibles.

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

Site Location

• Select a location near the center of the water piping system. The water heater must be installed indoors and in a vertical position on a level surface. DO NOT install in bathrooms, bedrooms, or any occupied room normally kept closed.

• Locate the water heater as close to the chimney or gas vent as practical. Consider the vent system piping and combustion air supply requirements when selecting the water heater location. The venting system must be able to run from the water heater to termination with minimal length and elbows.

• Locate the water heater near the existing gas piping. If installing a new gas line, locate the water heater to minimize the pipe length and elbows.

• The water heater should be located in an area not subject to freezing temperatures. Water heaters located in unconditioned spaces (i.e., attics, basements, etc.) may require insulation of the water piping and drain piping to protect against freezing. The drain and controls must be easily accessible for operation and service. Maintain proper clearances as specified on the rating plate.

• Do not locate the water heater near an air-moving device. The operation of air-moving devices such as exhaust fans, ventilation systems, clothes dryers, fireplaces, etc., can affect the proper operation of the water heater. Special attention must be given to conditions these devices may create. Flow reversal of flue gases may cause an increase of carbon monoxide inside of the dwelling (Figure 1).

• If the water heater is located in an area that is subjected to lint and dirt, it may be necessary to periodically clean the base-ring filter and flamearrestor (see External Inspection & Cleaning of the Flame-arrestor).

NOTE: This water heater must be installed according to CAN/CSA B149.1-current edition (Natural Gas and Propane Installation Code) and all local/provincial codes.

IMPORTANT: The water heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower floors of the structure. Due to the normal corrosive action of water, the tank will eventually leak after an extended period of time. Also any external plumbing leak, including those from improper installation, may cause early failure of the tank due to corrosion if not repaired. If the homeowner is uncomfortable with making the repair a qualified technician should be contacted. A suitable metal drain pan should be installed under the water heater as shown below, to help protect the property from damage which may occur from condensate formation or leaks in the piping connections or tank. The pan must limit the water level to a maximum depth of 1-3/4” (4.4 cm) and be two inches (5.1 cm) wider than the heater and piped to an adequate drain. NOTE: The pan must not restrict combustion air flow. Locate the water heater near a suitable indoor drain. Outside drains are subject to freezing temperatures which can obstruct the drain line. The piping should be at least 3/4” ID and pitched for proper drainage.

DISCHARGE PIPE (DO NOT CAP OR PLUG)

METAL DRAIN PAN

AT LEAST 2” (5.1 cm) GREATER THAN

THE DIAMETER OF THE WATER HEATER.

12” (300 mm) MAXIMUM AIR GAP

PIPED TO AN ADEQUATE DRAIN

• 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.

EXHAUST FAN

REVERSE FLOW OF GASES

FIGURE 3.

Clearances and Accessibility

NOTE: Minimum clearances from combustible surfaces are stated on the rating plate adjacent to the gas control valve/ thermostat of the water heater.

The water heater is certified for installation on a combustible floor.

• IMPORTANT: If installing over carpeting, the carpeting must be protected by a metal or wood panel beneath the water heater. The protective panel must extend beyond the full width and depth of the water heater by at least three inches (76.2mm) in any direction; or if in an alcove or closet installation, the entire floor must be covered by the panel.

• Figure 4 may be used as a reference guide to locate the specific clearance locations. A minimum of 24 inches (61 cm) of front clearance should be provided for inspection and service.

VENT

BACK

SIDES

TOP

CEILING

FIGURE 2.

Water heater life depends upon water quality, water usage, water temperature 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:

• Sensors mounted in the drain pan that trigger an alarm or turn off the incoming water to the water heater when water is detected.

• Sensors mounted in the drain pan that turn off the water supply to the entire home when water is detected in the drain pan.

FRONT 24” (61 cm) MINIMUM

TOP VIEW

FOR SERVICE

FIGURE 4.

SIDES

WARNING

GAS SUPPLY

MANUAL GAS SHUT-OFF VALVE

GROUND JOINT UNION

CHECK WITH LOCAL UTILITY FOR MINIMUM HEIGHT

DISCHARGE PIPE

(DO NOT CAP

OR PLUG)

Explosion Hazard

• Use a new CSA approved gas supply line.

• Install a shut-off valve.

• Do not connect a natural gas water heater to an L.P. gas supply.

• Do not connect an L.P. gas water heater to a natural gas supply.

• Failure to follow these instructions can result in death, explosion, or carbon monoxide poisoning.

Gas Requirements

IMPORTANT: Read the rating plate to be sure the water heater is made for the type of gas you will be using in your home. This information will be found on the rating plate located near the gas control valve/thermostat. If the information does not agree with the type of gas available, do not install or light. Call your dealer.

NOTE: An odorant is added by the gas supplier to the gas used by this water heater. This odorant may fade over an extended period of time. Do not depend upon this odorant

as an indication of leaking gas.

Gas Piping

3” (7.6 cm) MINIMUM

SEDIMENT TRAP

SUITABLE DRAIN

FIGURE 5.

12” (300 mm) MAXIMUM AIR GAP

Gas Pressure

WARNING

Explosion Hazard

• Gas leaks can not always be detected by smell.

• Gas suppliers recommend that you use a gas detector approved by UL or CSA.

• For more information, contact your gas supplier.

• If a gas leak is detected, follow the “What to do if you smell gas” instructions on the cover of this manual.

The gas piping must be installed according to CAN/ CSA B149.1-current edition (Natural Gas and Propane Installation Code) and all local/provincial codes.

Consult the Natural Gas and Propane Installation Code (CAN/CSA B149.1) for information on the correct sizing of gas pipe and other materials.

NOTE: Use pipe joint compound or teflon tape marked as being resistant to the action of petroleum [Propane (L.P.)] gases (See Figure 5.)

1. Install a readily accessible manual shut-off valve in the gas supply line as recommended by the local utility. Know the location of this valve and how to turn off the gas to this unit.

2. Install a sediment trap (if not already incorporated as part of the water heater) as shown. The sediment trap must be no less than three inches long for the accumulation of dirt, foreign material, and water droplets.

3. Install a ground joint union between the gas control valve/thermostat and the manual shut-off valve. This is to allow easy removal of the gas control valve/ thermostat.

4. Turn the gas supply on and check for leaks. Test all connections by brushing on an approved noncorrosive leak-detection solution. Bubbles will show a leak.

Correct any leak found.

IMPORTANT: The gas supply pressure must not exceed the maximum supply pressure as stated on the water heater’s rating plate. The minimum supply pressure is for the purpose of input

adjustment.

Gas Pressure Testing

IMPORTANT: This water heater and its gas connection must be leak tested before placing the appliance in operation.

• If the code requires the gas lines to be tested at a pressure exceeding 14” W.C. (3.486 kPa), the water heater and its manual shut-off valve must be disconnected from the gas supply piping system and the line capped.

• If the gas lines are to be tested at a pressure less than 14” W.C. (3.486 kPa), the water heater must be isolated from the gas supply piping system by closing its manual shutoff valve.

NOTE: Air may be present in the gas lines and could prevent the pilot from lighting on initial start-up. The gas lines should be purged of air by a qualified technician after installation of the gas piping system. While purging the gas piping system of air, insure that the fuel is not spilled in the area of the water heater installation, or any source of ignition. If the fuel is spilled while purging the piping system of air follow the “WHAT TO DO IF YOU SMELL GAS” instructions on the cover of this manual.

LP Gas Only

WARNING

Explosion Hazard

Have a qualified technician make sure L.P. gas pressure does not exceed 13” water column (3.237 kilopascals).

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

COMBUSTION AIR & VENTILATION

WARNING

Carbon Monoxide Warning

Water heater must be vented to outdoors. Vent must be installed by a qualified technician using

the installation instructions. Examples of a qualified technican include: gas

technicians, authorized gas company personel, and authorized service persons.

Failure to so do can result in death or carbon monoxide poisoning.

IMPORTANT: Air for combustion and ventilation must not come from a corrosive atmosphere. Any failure due to corrosive elements in the atmosphere is excluded from warranty coverage.

The following types of installation (not limited to the following) will require outdoor air for combustion due to chemical exposure and may reduce but not eliminate the presence of corrosive chemicals in the air:

• beauty shops

• photo processing labs

• buildings with indoor pools

• water heaters installed in laundry, hobby, or craft rooms

• water heaters installed near chemical storage areas

Combustion air must be free of acid-forming chemicals such as sulfur, fluorine, and chlorine. These elements are found in aerosol sprays, detergents, bleaches, cleaning solvents, air fresheners, paint, and varnish removers, refrigerants, and many other commercial and household products. When burned, vapors from these products form highly corrosive acid compounds. These products should not be stored or used near the water heater or air inlet.

Combustion and ventilation air requirements are determined by the location of the water heater. The water heater may be located in either an open (unconfined) area or in a confined area or small enclosure such as a closet or small room.

Liquefied petroleum gas is over 50% heavier than air and in the occurrence of a leak in the system, the gas will settle at floor level. Basements, crawl spaces, closets and areas below ground level will serve as pockets for the accumulation of gas. Before lighting an L.P. gas water heater, smell all around the appliance at floor level. If you smell gas, follow the instructions as given in the warning on the front page.

When your L.P. tank runs out of fuel, turn off the gas at all gas appliances including pilot lights. After the tank is reﬁ lled, all appliances must be re-lit according to their manufacturer’s instructions.

Confined spaces are areas with less than 50 cubic feet for each 1,000 BTUH (4.8 cubic metres per kilowatt) of the total input for all gas-using appliances.

Unconfined Space

A water heater in an unconfined space uses indoor air for combustion and requires at least 50 cubic feet for each 1,000 BTUH (4.8 cubic metres per kilowatt) of the total input for all gas appliances. The table below shows a few examples of the minimum square footage (area) required for various BTUH inputs.

TABLE 1

Minimum Square

Feet

BTU/HR

(kW)

Input

30,000 (8.79) 188 (17.47) 9’ x 21’ (2.7 m x 6.4 m) 45,000 (13.18) 281 (26.10) 14’ x 20’ (4.3 m x 6.1 m) 60,000 (17.58) 375 (34.84) 15’ x 25’ (4.6 m x 7.6 m) 75,000 (21.97) 469 (43.57) 15’ x 31’ (4.6 m x 9.4 m) 90,000 (26.37) 563 (52.30) 20’ x 28’ (6.1 m x 8.5 m) 105,000 (30.76) 657 (61.04) 20’ x 33’ (6.1 m x 10.1 m) 120,000 (35.15) 750 (69.68) 25’ x 30’ (7.6 m x 9.1 m) 135,000 (39.55) 844 (78.41) 28’ x 30’ (8.5 m x 9.1 m)

IMPORTANT:

• The area must be open and be able to provide the proper air requirements to the water heater. Areas that are being used for storage or contain large objects may not be suitable for water heater installation.

• Water heaters installed in open spaces in buildings with unusually tight construction may still require outdoor air to function properly. In this situation, outside air openings should be sized the same as for a confined space.

• Modern home construction usually requires supplying outside air into the water heater area.

(Square Metres)

with 8 Foot

(2.44 Metre) Ceiling

Typical Room

with 8 Foot

(2.44 Metre)

Ceiling

Confined Space

OSS

For the correct and proper operation of this water heater, ample air must be supplied for the combustion, ventilation, and dilution of flue gases.

The size of each opening (free area) is determined by the total BTUH input of all gas utilization equipment (i.e., water heaters, furnaces, clothes dryers, etc.) and the method by which the air is provided. The BTUH input can be found on the water heater rating plate. Additional air can be provided by two methods:

1. All air from inside the building.

2. All air from outdoors.

All Air from Inside the Building

When additional air is to be provided to the confined area from additional room(s) within the building, the total volume of the room(s) must be of sufficient size to properly provide the necessary amount of fresh air to the water heater and other gas utilization equipment in the area. If you are unsure that the structure meets this requirement, contact your local gas utility company or other qualified agency for a safety inspection.

When indoor air is used, small enclosures and confined areas must have two permanent openings so that sufficient fresh air can be drawn from outside of the enclosure. The bottom opening must be no lower than 6 inches (150 mm) and no more than 18 inches (450 mm) above floor level. The top opening must have the same area as the bottom opening and be located as close to the ceiling as possible. However, it must never be lower than the relief opening of the draft hood. See Figure 6.

PERMANENT

OPENINGS TO

ADDITIONAL

ROOMS WITHIN

THE BUILDING

AS CLOSE TO CEILING AS P

ABOVE DRAFT HOOD.

IBLE AND

CLOSET

OTHER

CONFINED

SPACE

CONFINED

SPACE

PERMANENT

OPENINGS

1 SQUARE INCH/1000

BTUH

(MINIMUM 100 SQ. IN.) See text for metric values.

FIGURE 7.

All Air from Outdoors

Outdoor fresh air can be provided to a confined area either directly or by the use of ducts. The fresh air can be taken from the outdoors or from crawl or attic spaces that freely communicate with the outdoors. Attic or crawl spaces cannot be closed and must be properly ventilated to the outside.

Ductwork must be of the same cross-sectional area as the free area of the opening to which they connect. The minimum dimension of rectangular air ducts cannot be less than three inches (76.2 mm). In addition, the duct must terminate within 1 foot (304.8 mm) above, and within 2 feet (609.6 mm) horizontally from, the burner level of the appliance having the largest input. See Figure 8.

CONFINED

12 in. (304.8 mm) MINIMUM ABOVE GRADE & SNOW LEVELS

GRADE

COMBINATION COMBUSTION/

VENTILATION

AIR DUCT

SPACE

NO LESS THAN 6 INCHES (150 mm) AND NO MORE THAN 18 INCHES (450 mm) ABOVE FLOOR LEVEL.

FIGURE 6.

Each of the two openings shall have a minimum free area of 1 square inch per 1,000 BTU/HR (2225mm² per kW) of the total input rating of all gas utilization equipment in the confined area, but not less than 100 square inches (645.16

). See Figure 7.

WITHIN 12 in. (304.8 mm) ABOVE BURNER LEVEL

BASEMENT INSTALLATION, EQUIPMENT LOCATED IN CONFINED SPACES; ALL AIR FROM OUTDOORS

WITHIN 24 in. (609.6 mm)

FIGURE 8.

An opening may be used in lieu of a duct to provide the outside air supply. It, too, must be located within 1 foot (304.8 mm) above, and within 2 feet (609.6 mm) horizontally from, the burner level of the applicance having the largest input. However, it must be located at least 12 inches (304.8 mm) above the outside grade level and be clear of snow levels. In addition, it must be equipped with a means to prevent the direct entry of rain and wind without reducing the required free area of the opening.

The size of openings is determined by the method in which the air is to be provided. For specific ventilation and combustion air requirements, consult the Natural Gas and Propane Installation Code (CAN/CSA B149.1-current edition) and the local codes of your area.

Louvers and Grilles

Draft Hood Installation

Draft hood

Flue Damper

In calculating free area for ventilation and combustion air supply openings, consideration must be given to the blocking effect of protection louvers, grilles, and screens. These devices can reduce airflow, which in turn may require larger openings to achieve the required minimum free area. Screens must not be smaller than 1/4” mesh (6.35 mm). If the free area through a particular design of louver or grille is known, it should be used in calculating the specified free area of the opening. If the design and free area are not known, it can be assumed that most wood louvers will allow 20 - 25% of free area while metal louvers and grilles will allow 60 - 75% of free area.

Louvers and grilles must be interconnected with the equipment so that they are opened automatically during equipment operation. Also, keep louvers and grilles clean and free of debris or other obstructions. Do not use manually adjustable louvers.

Consult the local codes of your area for specific ventilation and combustion air requirements.

Vent Pipe System

This water heater uses a non-direct, single-pipe vent system to remove exhaust gases created by the burning of fossil fuels. Air for combustion is taken from the immediate water heater location or is ducted in from the outside (see “Combustion Air and Ventilation.”)

This water heater must be properly vented for the removal of exhaust gases to the outside atmosphere. Correct installation of the vent pipe system is mandatory for the proper and efficient operation of this water heater and is an important factor in the life of the unit.

The vent pipe must be installed according to CAN/ CSA B149.1-current edition (Natural Gas and Propane Installation Code) and all local/provincial codes.

The vent pipe installation must not be obstructed so as to prevent the removal of exhaust gases to the outside atmosphere.

IMPORTANT:

• The use of vent dampers is not recommended by the

manufacturer of this water heater. Although some vent dampers are certified by CSA International, this certification applies to the vent damper device only and does not mean they are certified for use on this water heater.

• Certified (listed) fuel gas and carbon monoxide (CO)

detectors are recommended in all applications and should be installed using the manufacturer’s instructions and local codes, rules, or regulations.

• The venting system must be installed by a qualified

technician

Draft hood Leg Tips*

* Twist or bend the leg tips to secure the draft hood to the flue damper

FIGURE 9.

Align the legs of the draft hood with the slots provided. Insert the draft hood leg tips into slots on the flue damper’s flange as shown in Figure 9. Secure the draft hood by twisting or bending the leg tips. See Figure 9. Do not alter the draft hood in any way. If you are replacing an existing water heater, be sure to use the new draft hood supplied with the water heater.

Vent Pipe Size

It is important that you follow the guidelines in these instructions for sizing a vent pipe system. If a transition to a larger vent size is required, the vent transition connection must be made at the draft hood outlet.

Vent Connectors

1. Type B, Double wall, U.L. Listed Vent Pipe.

2. Single wall Vent Pipe. Maintain the manufacturer’s specified minimum clearance

from combustible materials when using type B double wall vent pipe.

Vent connectors made of type B, double wall vent pipe material may pass through walls or partitions constructed of combustible material if the minimum listed clearance is maintained.

Maintain a twelve inch (300 mm) minimum clearance from all combustible materials when using single wall vent pipe.

IMPORTANT: Single wall vent pipe cannot be used for water heaters located in attics and may not pass through attic spaces, crawl spaces or any confined or inaccessible location. A single wall metal vent connector cannot pass through any interior wall.

When installing a vent connector, please note the following (See Figures 10-12):

• Install the vent connector avoiding unnecessary bends, which create resistance to the flow of vent gases.

• Install without dips or sags with an upward slope of at least 1/4-inch per foot (21 mm per metre).

• Joints must be fastened by sheet metal screws or other approved means. It must be supported to maintain clearances and prevent separation of joints and damage.

• The length of the vent connector cannot exceed 75% of the vertical vent height.

• The vent connector must be accessible for cleaning, inspection, and replacement.

• Vent connectors cannot pass through any ceiling, floor, firewall, or fire partition.

• It is recommended (but not mandatory) that a minimum 12 inches (30.48 cm) of vertical vent pipe be installed on the draft hood prior to any elbow in the vent system.

Gas vents must be supported to prevent damage, joint separation, and maintain clearances to combustible materials (Figures 11 and 12).

LISTED VENT CAP

IMPORTANT: Existing vent systems must be inspected for obstructions, corrosion, and proper installation.

Chimney Connection

IMPORTANT: Before connecting a vent to a chimney, make sure the chimney passageway is clear and free of obstructions. The chimney must be cleaned if previously used for venting solid fuel appliances or fireplaces. Also consult the “Natural Gas and Propane Installation Code,” CAN/CSA B149.1-current edition as well as local and provincial codes for proper chimney sizing and application.

• The connector must be installed above the extreme bottom of the chimney to prevent potentially blocking the flue gases.

• The connector must be firmly attached and sealed to prevent it from falling out.

• To aid in removing the connector, a thimble or slip joint may be used.

• The connector must not extend beyond the inner edge of the chimney as it may restrict the space between it and the opposite wall of the chimney (Figure 10).

LISTED LINED CHIMNEY

MAINTAIN CLEARANCE

SUPPORT STRAP

MAINTAIN CLEARANCE

SEAL

SLOPE

UP 1/4 IN.

PER FT.

(21 mm

PER

METRE)

MINIMUM

MAINTAIN CLEARANCE

DO NOT EXTEND VENT BEYOND EDGE OF CHIMNEY

VENT CONNECTOR

SEE END NOTES ON NEXT PAGE

FIGURE 10.

Do not terminate the vent connector in a chimney that has not been certified for this purpose. Some local codes may prohibit the termination of vent connectors in a masonry chimney.

Vertical Exhaust Gas Vent

Vertical exhaust gas vents must be installed with U.L. listed type B vent pipe according to the vent manufacturer’s instructions and the terms of its listing.

It must be connected to the water heater’s draft hood by a listed vent connector or by directly originating at the draft hood opening.

Vertical gas vents must terminate with a listed cap or other roof assembly and be installed according to their manufacturer’s instructions.

1,2

SUPPORT STRAP

MAINTAIN CLEARANCE

MAINTAIN SPECIFIED CLEARANCE

VERTICAL GAS VENT SYSTEM WITH TYPE B DOUBLE WALL VENT PIPE.

VENT

CONNECTOR

SLOPE UP

1/4 IN. PER FT.

(21 mm PER METRE)

MINIMUM

MAINTAIN SPECIFIED CLEARANCE

TYPE B DOUBLE WALL VENT PIPE

MAINTAIN SPECIFIED CLEARANCE

FIGURE 11.

LISTED VENT CAP

SEAL

MAINTAIN SPECIFIED CLEARANCE

VENT CONNECTOR

UNUSED CHIMNEY FLUE OR MASONRY ENCLOSURE

1,2

MAINTAIN SPECIFIED CLEARANCE

SUPPORT STRAP

MAINTAIN CLEARANCE

VENT

CONNECTOR

SLOPE UP

1/4 IN. PER FT.

(21 mm

PER METRE)

MINIMUM

VENTING THROUGH A CHIMNEY WITH

TYPE B DOUBLE WALL VENT PIPE.

FIGURE 12.

Vent pipe must be installed according to CAN/CSA B149.1-current edition (Natural Gas and Propane Installation Code) and all local/provincial codes.

Refer to local building code and/or the National Building Code of Canada.

IMPORTANT: This gas vent must be terminated in a vertical position to facilitate the removal of the burnt gases.

An unused chimney flue or masonry enclosure may be used as a passageway for the installation of a gas vent (Figure 12).

Common (combined) venting is allowable with vertical type B vent systems and lined masonry chimneys as long as proper draft for the water heater is established under all conditions of operation. CAUTION: DO NOT common vent this water heater with any power vented appliance.

Figures 10-12 are examples of vent pipe system installations and may or may not be typical for your specific application. Consult the “Natural Gas and Propane Installation Code,” CAN/CSA B149.1-current edition and the guidelines set forth by prevailing local codes.

Vent Size Verification

It is possible that the existing venting system was sized through a common vent for a previous installation. Such an arrangement is appropriate for venting two appliances (such as the original water heater and a standard vent furnace). If this is true and the second appliance has been removed from the existing venting system (such as when the furnace has been upgraded to a power vent type), the venting system is now supplying only one appliance. This condition is commonly referred to as “orphaning.” In such

cases, the venting system must be properly resized for a single appliance.

Therefore, it is important to verify the size of the existing venting system. Improper sizing can cause a number of undesirable and potentially unsafe results including spillage of the products of combustion into the room, poor combustion, excessive condensation, pilot outage, or delayed ignition. The vent pipe must not be obstructed so as to prevent the removal of exhaust gases to the outside atmosphere.

WATER SYSTEM PIPING

Piping Installation

Piping, fittings, and valves should be installed according to the installation drawing (Figure 16). If the indoor installation area is subject to freezing temperatures, the water piping must be protected by insulation.

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.

IMPORTANT: Heat cannot be applied to the water fittings on the heater as they may contain nonmetallic parts. If solder connections are used, solder the pipe to the adapter before attaching the adapter to the hot and cold water fittings.

IMPORTANT: Always use a good grade of joint compound and be certain that all fittings are drawn up tight.

1. Install the water piping and fittings as shown in Figure

13. Connect the cold water supply (3/4” NPT) to the cold water inlet fitting. Connect the hot water supply (3/4” NPT) to the hot water outlet fitting.

IMPORTANT: Some models may contain energy saving heat traps to prevent the circulation of hot water within the pipes. Do not remove the inserts within the heat traps.

2. The installation of unions in both the hot and cold water supply lines is recommended for ease of removing the water heater for service or replacement.

3. The manufacturer of this water heater recommends installing a mixing valve or an anti-scald device in the domestic hot water line as shown in Figure 14. These valves reduce the point-of-use temperature of the water by mixing cold and hot water and are readily available for use.

4. If installing the water heater in a closed water system, install an expansion tank in the cold water line as

specified under Closed System/Thermal Expansion.

5. Install a shut-off valve in the cold water inlet line. It should be located close to the water heater and be easily accessible. Know the location of this valve and how to shut off the water to the heater.

6. A temperature and pressure relief valve must be installed in the opening marked “Temperature and Pressure (T & P) Relief Valve” on the water heater. A discharge line must be added to the opening of the T&P Relief Valve. Follow the instructions under Temperature and Pressure Relief Valve.

7. After piping has been properly connected to the water heater, remove the aerator at the nearest hot water faucet. Open the hot water faucet and allow the tank to completely fill with water. To purge the lines of any excess air, keep the hot water faucet open for 3 minutes after a constant flow of water is obtained. Close the faucet and check all connections for leaks.

IN A CLOSED SYSTEM USE A THERMAL EXPANSION TANK

COLD WATER SUPPLY TO FIXTURES

PRESSURE REDUCING VALVE WITH BYPASS

COLD WATER INLET

COLD WATER INLET VALVE (SHUT-OFF VALVE)

12” (300 mm) MAXIMUM AIR GAP

TO FIXTURES

COLD

WATER

INLET

1” MINIMUM

METAL DRAIN PAN

HOT WATER OUTLET

WATER OUTLET

SUITABLE DRAIN

UNTEMPERED HOT WATER

HOT

TEMPERATURE AND PRESSURE (T&P) RELIEF VALVE (OPTIONAL TOP T&P RELIEF VALVE NOT SHOWN)

DISCHARGE PIPE (DO NOT CAP OR PLUG)

DRAIN LINE 3/4” ID MINIMUM

FIGURE 13.

TEMPERED WATER

MIXING VALVE

(SET TO 120°F)

FOLLOW THE MIXING

VALVE MANUFACTURER’S

INSTRUCTIONS

FIGURE 14.

Please note the following:

• The system should be installed only with piping that is suitable for potable (drinkable) water such as copper, CPVC, or polybutylene. This water heater must not be installed using iron piping or PVC water piping.

• Use only pumps, valves, or fittings that are compatible with potable water.

• It is recommend that only full flow ball or gate valves are used in water piping installations. The use of valves that may cause excessive restriction to water flow is not recommended.

• Use only 95/5 tin-antimony or other equivalent solder. Any lead based solder must not be used.

• Piping that has been treated with chromates, boiler seal, or other chemicals must not be used.

• Chemicals that may contaminate the potable water supply must not be added to the piping system.

Closed System/Thermal Expansion

As water is heated, it expands (thermal expansion). In a closed system, the volume of water will grow. As the volume of water grows, 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.

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

Temperature and Pressure Relief Valve

Explosion Harzard

• Temperature-pressure relief valve must comply with ANSI Z21.22-CSA 4.4 and ASME code.

• Properly sized temperaturepressure relief valve must be installed in opening provided.

• Can result in overheating and excessive tank pressure.

• Can cause serious injury or death.

TEMPERATURE AND PRESSURE (T&P) RELIEF VALVE (OPTIONAL TOP T&P RELIEF VALVE NOT SHOWN)

DISCHARGE PIPE (DO NOT CAP OR PLUG)

DRAIN LINE

1” ( 2.54cm)

MINIMUM

METAL DRAIN PAN

DRAIN

FIGURE 15.

3/4” ID MINIMUM

12” (300 mm) MAXIMUM AIR GAP

For protection against excessive pressures and temperatures, a temperature and pressure relief valve must be installed in the opening marked “T & P RELIEF VALVE” (see Figure 15). This valve must be design certified by a nationally recognized testing laboratory that maintains periodic inspection of the production of listed equipment or materials as meeting the requirements for Relief Valves for Hot Water Supply Systems, ANSI Z21.22. The function of the temperature and pressure relief valve is to discharge water in large quantities in the event of excessive temperature or pressure developing in the water heater. The valve’s relief pressure must not exceed the working

pressure of the water heater as stated on the rating plate. IMPORTANT: Only a new temperature and pressure relief

valve should be used with your water heater. Do not use an old or existing valve as it may be damaged or not adequate for the working pressure of the new water heater. Do not place any valve between the relief valve and the tank.

The Temperature & Pressure Relief Valve:

• Must not be in contact with any electrical part.

• Must be connected to an adequate discharge line.

• Must not be rated higher than the working pressure shown on the rating plate of the water heater.

The Discharge Line:

• Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.

• Must not be capped, blocked, plugged or contain any valve between the relief valve and the end of the discharge line.

• Must terminate a maximum of twelve inches (300 mm) above a floor 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.

• Must be capable of withstanding 250°F (121°C) without distortion.

• Must be installed to allow complete drainage of both the valve and discharge line.

T&P Relief Valve and Pipe Insulation (Some Models)

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

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

3. Spread the slit open and fit the insulation over the T&P relief valve. See Figure 16. Apply gentle pressure to the insulation to ensure that it is fully seated on the T&P Relief Valve. Once seated, secure the insulation with duct tape. IMPORTANT: The insulation or tape should not block or cover the T&P relief valve drain opening. Also, the insulation or tape should not block or hinder access to the manual relief lever (Figure 16).

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

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

6. 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 that it is fully seated around the pipe. Also, ensure that the base of the insulation is flush with the water heater. Once seated, secure the insulation with duct tape.

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

8. Add additional sections of pipe insulation as needed.

T&P RELIEF VALVE INSULATION

MANUAL RELIEF LEVER

T&P RELIEF VALVE

FIGURE 16.

IMPORTANT INFORMATION ABOUT THIS WATER HEATER

This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor ignition incident. The new technology used in meeting these standards makes this product more sensitive to installation errors. Please review the following checklist and make any required installation upgrades or changes.

Questions? Contact Residential Technical Assistance by referencing the phone number on the front of the Installation Instructions and Use & Care Guide.

Installation Checklist

Water Heater Location

Water heater location is important and can affect system performance. Please check the following:

□ Installation area free of corrosive elements and

flammable materials.

□ Centrally located with the water piping system (For new

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

□ Located indoors and in a vertical position. Protected

from freezing temperatures.

□ Proper clearances from combustible surfaces

maintained 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.

□ Sufficient room to service the water heater. See

Clearances and Accessibility section of this manual.

□ Water heater not located near an air moving device. □ Is the installed environment dirty (excessive amounts

of lint, dirt, dust, etc.)? If so, the base-ring filter located on the bottom of the water heater will need to be cleaned periodically. Refer to the Maintenance of your Water Heater section of this manual for information on cleaning the base-ring filter.

Combustion Air Supply and Ventilation

Check for sufficient combustion air supply. Insufficient air for the combustion of gas will result in the flame becoming “lazy”, thereby allowing heat to build up in the combustion chamber. This excessive heat will cause a thermal switch on the door assembly to trip. Is the water heater installed in a closet or other small, enclosed space? If so:

□ Are there openings for make-up air to enter and exit

the room/area?

□ Are the openings of sufficient size? Remember, if

there are other gas-fired or air-consuming appliances in the same room, you need more make-up air. Refer to the Location Requirements section of this water heater manual for specific requirements.

Fresh air not taken from areas that contain negative pressure producing devices such as exhaust fans, dryers, fireplaces, etc.

□ Is there a furnace/air handler in the same room space

as the water heater? If so, has a return air duct system been attached that exits the room? If so, check for leaks on the air duct system. If no air duct system is present, correct immediately by contacting a local Heating, Ventilation, Air-Conditioning & Refrigeration (HVAC-R) authorized service provider.

□ Fresh air supply free of corrosive elements and

flammable vapors.

□ Fresh air openings sized correctly with consideration

given to the blocking effect of louvers and grilles.

□ Ductwork is the same cross-sectional area as the

openings.

Vent Pipe System

Check for proper drafting at the water heater draft hood. Refer to the “Checking the Draft” section of this manual for the test procedure. If the procedure shows insufficient draft is present, please check the following.

□ Draft hood properly installed. □ Vent connectors securely fastened with screws and

supported properly to maintain six inch clearance.

□ Vent connector made of approved material and sized

correctly.

□ The vent pipe must be installed according to CAN/

CSA B149.1-current edition (Natural Gas and Propane Installation Code) and all local/provincial codes.

□ Flue baffle properly positioned in the flue tube. □ Check the vent system for restrictions/obstructions

and check the vent termination height. Refer to the Combustion Air and Ventilation section of this water heater manual for specific requirements.

□ Recheck for sufficient combustion air supply.

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. □ Heater completely filled with water. □ Closed system pressure build-up devices installed. □ Mixing valve (when applicable) installed per

manufacturer’s instructions (See Water Temperature Regulation section).

Gas Supply and Piping

□ Gas type is the same as that listed on the water heater

rating plate.

□ Gas line equipped with shut-off valve, union, and

sediment trap.

□ Use pipe joint compound or teflon tape marked as being

resistant to the action of petroleum [Propane (L.P.)] gases.

□ Adequate pipe size and approved pipe material. □ An approved noncorrosive leak detection solution used

to check all connections and fittings for possible gas leaks. Correct any leak found.

OPERATING YOUR WATER HEATER

Lighting Instructions

Read and understand these directions thoroughly before attempting to start or re-start the water heater. Make sure the viewport is not missing or damaged. (See Figure 24) Make sure the tank is completely filled with water before turning the power switch on. Check the data plate near the gas control valve/thermostat for the correct gas. Do not use this water heater with any gas other than the one listed on the data plate. If you have any questions or doubts, consult your gas supplier or gas utility company.

FOR YOUR SAFETY READ BEFORE LIGHTING

WARNING:

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

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

This appliance is equipped with an ingnition

device which automatically lights the pilot. not open and try to light

BEFORE LIGHTING 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.

the inner door of the appliance

the pilot by hand.

smell all around the appliance

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.

If you do not follow these instructions exactly, a

WARNING

Explosion Hazard

Replace view port if glass is missing or damaged.

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

FLAMMABLE

Use only your hand to turn the gas control

Never use tools. If the knob will not hand, don't try to repair it, call a qualified

technician. Force or attempted repair may in a fire or explosion.

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!

DO NOT USE THIS APPLIANCE IF THERE HAS

BEEN AN IGNITION OF VAPORS. Immediately call a qualified service technician to inspect the appliance. Water heaters subjected to a flammable vapors ignition will show a discoloration on the air intake grid and require replacement of the entire water heater.

knob.

move by

service result

LIGHTING INSTRUCTIONS

On / Off Switch

Status Light

STATUS

120°F

OFF

VERY

Position

HOT

•

LOW

VAC

Gas Control/Temperature Knob

STOP! It is imperative that you read

all the safety warnings above on

this label.

2. Remove the outer door.

3. Move the ON / OFF switch on the Gas Control Valve/Thermostat to the OFF position.

4. To clear any gas that may have accumulated, wait ten (10) minutes. If you then smell gas, STOP! Follow “B” in the safety warning above. If you do not smell gas go to the next step.

5. Turn on all electric power to the appliance. (Connect to a grounded 110/120 volt power outlet.)

6. Move the ON / OFF switch on the Gas Control Valve/ Thermostat to the ON position.

7. Turn the gas control/temperature knob to the “LOW” temperature setting. As shown above

8. This appliance is equipped with a device that automatically lights the pilot. DO NOT TRY TO LIGHT THE PILOT BY HAND.

HOT

LOW

VERY

HOT

•

VA C

TO TURN OFF GAS TO APPLIANCE

1. Turn off the gas to the water heater at the manual shut-off valve.

2. Move the ON / OFF switch on the Gas Control Valve/Thermostat to the OFF position.

Pilot

Igniter Electrode

When the pilot is lit, the status light should blink a heartbeat (bright, dim, bright, dim, etc). If the status light does not start blinking, repeat steps 3 - 7.

The pilot can be located by looking through the

glass view port. If the pilot is lit, you will see the pilot flame through the glass view port.

IMPORTANT:If the appliance (pilot) fails to light

after several tries, follow the instructions “To Turn Off Gas to Appliance” and call a qualified service technician or gas supplier. Record any status light flash codes.

10. Set the gas control/temperature knob to the desired setting.

11. Replace the outer door.

Set thermostat to desired setting.

12.

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

3. Turn off all electric power to the appliance.

(Disconnect from grounded 110/120 volt power outlet.)

Checking the Draft

WARNING

Burn Hazard

Do not touch vent.

Doing so can result in burns.

This water heater’s temperature control has been designed to accurately regulate the water temperature. However, under certain operating conditions, the water temperature may temporarily exceed the dial setting. Consequently, in addition to setting the temperature no higher than 120°F (49°C), we recommend the installation of a mixing valve or an anti-scald device in the hot water supply line or at the point of use to further reduce the risk of scald injury. These devices can be obtained from a plumbing service agency or your retail supplier.

Emergency Shut Down

After successfully lighting the water heater, allow the unit to operate for 15 minutes and check the draft hood relief opening for proper draft (Figure 17). Make sure all other appliances in the area are operating and all doors are closed when performing the draft test. Pass a match flame around the relief opening of the draft hood. A steady flame drawn into the opening indicates proper draft.

Vent Pipe

Relief

Opening

FIGURE 17.

Draft Hood

Match

If the flame flutters or is blown out, combustion products are escaping from the relief opening. If this occurs, do not operate the water heater until proper adjustments or repairs are made to the vent pipe system and/or air supply requirements.

Burner Flames

Inspect the burner flames through the viewport and compare them to the drawings in Figure 18. A properly operating burner should produce a soft blue flame. Blue tips with yellow inner cones are satisfactory. The tips of the flame may have a slight yellow tint. The flame should not be all yellow or have a sharp blue-orange color. Contaminated air may cause an orange colored flame. Contact a qualified technician if the flame is not satisfactory.

FIGURE 18.

Water Heater Stacking

Stacking occurs when a series of short draws of hot water (3 gallons [11.36 litres] or less) are taken from the water heater tank. This causes increased cycling of the burner and can result in increased water temperatures at the hot water outlet.

IMPORTANT: Should overheating occur or the gas supply fails to shut off, turn off the water heater’s manual gas control valve and call a qualified technician.

Water Temperature Regulation

Water temperature over 125°F (52°C) can cause servere burns instantly resulting in severe injury or death.

Children, the elderly, and the physically or mentally disabled are at highest risk for scald injury.

Feel water before bathing or showering.

Temperature limiting valves are available.

Read instruction manual for safe temperature setting.

Due to the nature of the typical gas water heater, the water temperature in certain situations may vary up to 30°F (16.7 °C) higher or lower at the point of use such as, bathtubs, showers, sink, etc.

HOTTER 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, 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 infirm, or physically/ mentally handicapped. If anyone using hot water in your home fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap, then you must take special precautions. In addition to using the lowest possible temperature setting that satisfies your hot water needs, a means such as a mixing valve should be used at the hot water taps used by these people or at the water heater. Mixing valves are available at plumbing supply or hardware stores. See Figure 14. Follow manufacturer’s instructions for installation of the valves. Before changing the factory setting on the thermostat, see Figure 19. Using the lowest hot water temperature that meets your needs will also provide the most energy efficient operation of the water heater.

Never allow small children to use a hot water tap, or to draw their own bath water. Never leave a child or handicapped person unattended in a bathtub or shower. NOTE: A water temperature range of 120°F-140°F

(49°C-60°C) is recommended by most dishwasher manufacturers.

The thermostat of this water heater has been factory set at the VAC (Vacation) position. It is adjustable and must be reset to the desired temperature setting to reduce the risk of scald injury. The HOT mark is indicative of approximately 120°F (49°C) and is the preferred starting point. See Figure 22 on the next page. Some jurisdictions have a requirement for a lower setting.

Turn the water temperature dial clockwise (

) to increase the temperature, or counterclockwise ( ) to decrease the temperature.

Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the appliance.

160°F (Approx.)

Status Light

STATUS

OFF

HOT

•

LOW

Gas Control/Temperature Knob

120°F

Position

HOT

•

VAC

110°F (Approx.)

FIGURE 19.

HOT

LOW

•

70°F (Approx.)

VERY

VA C

HOT

Table: 2

Water

Temperature

°F

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 second

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

Time for 1st

Degree Burn

(Less Severe Burns)

Time for Permanent Burns

2nd & 3rd Degree

(Most Severe Burns)

NOTE: During low demand periods when hot water is not being used, a lower thermostat setting will reduce energy losses and may satisfy your normal hot water needs. If hot water use is expected to be more than normal, a higher thermostat setting may be required to meet the increased demand. When leaving your home for extended periods (vacations, etc.) turn the temperature dial to its lowest setting. This will maintain the water at low temperatures with minimum energy losses and prevent the tank from freezing

during cold weather.

Water Temperature Adjustment

The water temperature setting can be adjusted from 70°F to 160°F. Turn the Gas Control/Temperature Knob to the desired setting/temperature.

NOTE: The temperatures indicated are approximates. The actual temperature of the heated water may vary.

Operating Modes and Settings

• Standard Mode - The controller adjusts the water heater to maintain the temperature set by the user.

• Vacation Setting - 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

Status Light Code

Table 5

LED FLASH SEQUENCE CONTROL STATUS

Short flash once every four second IDLE (No call for heat, no fault conditions) “Heartbeat”, alternates bright/dim Call for Heat (No fault conditions) One Flash, three second pause Low Flame Signal (control continues to operate) Two Flash, three second pause End Switch Failed Closed Three Flash, three second pause End Switch Failed Open or TCO Limit Lockout Four Flash, three second pause ECO Limit Lockout (Overheat Failure) Five Flash, three second pause Flame Out of Sequence Six-One Flash, three second pause Soft Lockout* - Retry Limit - Failed TFI (Trial for Ignition) Six-Two Flash, three second pause Soft Lockout* - Recycle Limit - Flame Lost - END Switch Fails Six-Three Flash, three second pause Soft Lockout* - Recycle Limit - Flame Lost Six-Four Flash, three second pause Soft Lockout* - Flame out of Sequence Sensed Seven Flash, three second pause Flammable Vapor Sensor (FVS) Lockout Eight-One Flash, three second pause Flammable Vapor Sensor (FVS) Fault Detected Eight-Two Flash, three second pause Temperature Sensor Fault Detected Eight-Three Flash, three second pause Electronic Fault Detected Eight-Four Flash, three second pause Gas Control Valve/Thermostat Fault Detected

* Soft Lockout - 20 minute wait before returning to normal mode.

while still conserving energy.

ELECTRICAL CONNECTIONS/WIRING DIAGRAM

Electrical Connections

Before plugging in the water heater, always make sure:

• The Voltage and frequency correspond to that specified on the

water heater.

• The electrical outlet has the proper overload fuse or breaker

protection.

• Water heater to be located within 6 feet of 120VAC outlet.

• Unit is to connect to a 120VAC electrical supply outlet

(extension cord is not allowed).

• The water heater and the outlet are properly grounded.

• Installed in accordance with CSA C22.1-current edition

(Canadian Electrical Code) and all local/provincial codes. Completely fill the tank with water and check all connections for leaks. Open the nearest hot water faucet and let it run for three (3) minutes to purge the water lines of air and sediment and to ensure complete filling of the tank. The Electrical power may then be turned on. Verify proper operation after servicing.

WARNING

Electric Shock Hazard

WARNING

Electric Shock Hazard

Plug into a 3 prong outlet.

Do not remove ground prong.

Do not use an adapter.

Do not use an extension cord.

Failure to follow these instructions can result in death, fire, or electrical shock.

Disconnect power before servicing.

Replacing all parts and panels before operating.

Failure to do socan result in death or electrical shock

BN - 24VAC

V - 24VAC

BK - 120VAC

W - 120VAC

TRANSFORMER

YL 24 VAC

V 24 VAC

DAMPER

TEMPERATURE CUT-OFF SWITCH

GAS CONTROL VALVE/

IGNITER/FLAME SENSOR

You must provide all wiring of the proper size outside of the water heater. You must obey local utility requirements when you install this wiring. codes, with the

Note: If any of the original wire as supplied with the appliance must be replaced, it

National Electrical Code ANSI/NFPA No 70 (current edition) and/or THE CSA C22.1 ELECTRICAL CODE.(LATEST EDITION)

THERMOSTAT

FV SENSOR

BN 24 VAC

BK 24 VAC (H)

WH 24 VAC (N)

ON/OFF SWITCH

This appliance must be electrically grounded in accordance with local codes or, in the absence of

YL - 24VAC

BK - 120VAC

YL - 24VAC

TRANSFORMER

WH - 120VAC

must be replaced with 105°C wire or its equivalent.

BK - 24VAC (HOT)

WH - 24VAC (NEUTRAL)

BK - 24VAC (HOT)

codes and electric

6 5 4

3 2 1

GAS CONTROL VALVE\THERMOSTAT

FLAME SENSOR\IGNITER

FLUE DAMPER

1 2 3

4 5 6

TEMPERATURE CUT-OFF SWITCH

FV SENSOR

4 3 2 1

END SWITCH

local

FIGURE 23.

Operational Conditions

Condensation

Whenever the water heater is filled 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 condensation. This usually happens when:

a. A new water heater is filled with cold water for the first

time. b. Burning gas produces water vapor in water heaters, par-

ticularly high efficiency models where flue temperatures

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

the refill 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.

Excessive condensation can cause pilot outage due to water running down the flue tube onto the main burner and putting out the pilot.

Because of the suddenness and amount of water, condensation water may be 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 condensation may be noticed during the winter and early spring months when incoming water temperatures are at their lowest.

Good venting is essential for a gas fired water heater to operate properly as well as to carry away products of combustion and water vapor.

It is always recommended that a suitable metal drain pan be installed under the water heater to protect the area from water damage resulting from normal condensation production, a leaking tank or piping connections. Refer to the “Location Requirements” section.

Water Heater Sounds

During the normal operation of the water heater, sounds or noises may be heard. These noises are common and may result from the following:

1. Normal expansion and contraction of metal parts during

periods of heat-up and cool-down.

2. Condensation causes sizzling and popping within the burner area and should be considered normal.

3. Sediment buildup in the tank bottom will create varying amounts of noise and may cause premature tank failure. Drain and flush the tank as directed under the “Draining and Flushing” section.

Smoke/Odor

The water heater may give off a small amount of smoke and odor during the initial start-up of the unit. This is due to the burning off of oil from metal parts of a new unit and will disappear after a brief period of operation.

“AIR” In Hot Water Faucets

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 flammable and can ignite when exposed to a spark or flame. To prevent the possibility of injury under these conditions, we recommend the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance which is connected to the hot water system. If hydrogen is present, there will probably be an unusual sound such as air escaping through the faucet as water begins to flow. Do not smoke or have any open flame near the faucet at the time it is open.

Safety Shut-off

This water heater is designed to automatically shut-off in the event of the following:

1. The water temperature exceeds 189°F (87°C) for 160°F models.

3. Excessive combustion chamber temperatures.

4. The presence of flammable vapors.

This unit is equipped with a flammable vapor sensor, designed to shut off the gas supply in the event the heater has been exposed to flammable vapors (spilled gasoline or paint fumes for example). IMPORTANT: If the flammable vapor sensor activates a qualified service person must be contacted to reset the water heater. This unit is also equipped with a thermal switch designed to shut off the gas control valve/thermostat in the event the water heater has poor combustion caused by a blocked vent or insufficient combustion air. If the switch opens, check the flame-trap for signs of high temperature (blue or black discoloration), and inspect your installation for any problems with venting or combustion air (See Troubleshooting Flowchart on page 28-29). Reset the thermal switch by depressing the small button in the center of the switch. IMPORTANT: Correct any issues prior to resetting the switch. Contact the Product Service and Support Department for service information at: 1-888-479-8324.

A temperature limit switch or ECO (Energy Cut Off) sensor located in the gas control valve\thermostat, is used to shut off the water heater if the water temperature exceeds 189°F (87°C).

The Diagnostic Status Light will flash a code indicating an “Overheat Failure” (4 Flashes). See “Operating the Temperature Control System.” If the gas control valve/ thermostat has an “ECO Lockout” the gas control valve/ thermostat must be replaced by a qualified person. Contact your local dealer for service information.

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