GSW ANSI Z21.10.1 - CSA 4.1, RESIDENTIAL GAS WATER HEATERS Installation And Operating Manual

Installation and Operating Manual

RESIDENTIAL GAS WATER HEATERS

DIRECT VENTED GAS MODELS

NOT FOR USE IN MANUFACTURED (MOBILE) HOMES

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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.

1404 327539-000

• For Your Safety •

AN ODOURANT IS ADDED TO THE GAS USED

BY THIS WATER HEATER.

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

TYPICAL INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . .7

Get To Know Your Water Heater - Gas Models

(List Referencing Figures 1-5). . . . . . . . . . . . . . . . . . 7

Replacement Parts And Deliming Products . . . . . . . 8

Combo Heating Inlet And Outlet Side Taps . . . . . . . . 8

High Limit Controls (Energy Cut Off). . . . . . . . . . . . . 8

Thermostat/Water Temperature

LOCATING THE NEW WATER HEATER. . . . . . . . . . . . . .9

Facts To Consider About The Location . . . . . . . . . . . 9

External/Internal Damage . . . . . . . . . . . . . . . . . . . . . 9

Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Conﬁ ned Space Installations. . . . . . . . . . . . . . . . . . 10

Clearances To Combustibles Floors With Carpeting Clearance For Servicing

Chemical Vapour Corrosion . . . . . . . . . . . . . . . . . . 10

Storage Of Flammable Liquids . . . . . . . . . . . . . . . . .11

Insulation Blankets . . . . . . . . . . . . . . . . . . . . . . . . . .11

Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Water Pressure Mixing Valves

INSTALLING THE NEW WATER HEATER . . . . . . . . . . . 13

Water Piping Installation . . . . . . . . . . . . . . . . . . . . . 13

Closed Water Systems . . . . . . . . . . . . . . . . . . . . . . 13

Thermal Expansion . . . . . . . . . . . . . . . . . . . . . . . . . 13

Temperature-Pressure Relief Valve. . . . . . . . . . . . . 14

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

Pipe Insulation

Filling The Water Heater . . . . . . . . . . . . . . . . . . . . . 15

Space Heating And Potable Water Systems . . . . . . 16

Combo Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

System Requirements Installation

Gas Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Sediment Trap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

High Altitude Installations . . . . . . . . . . . . . . . . . . . . 19

Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Vent Terminal Clearances . . . . . . . . . . . . . . . . . . . . 20

DV Termination Safety Cover . . . . . . . . . . . . . . . . . 21

Vent Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Locating Clearance Hole For Vent . . . . . . . . . . . . . 21

Standard Vent Arrangement . . . . . . . . . . . . . . . . . . 21

Vent Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Securing Vent Termination Assembly To

The Exterior Wall. . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Vent Restricter Plate . . . . . . . . . . . . . . . . . . . . . . . . 22

Uncompressing The Corrugated Tubing . . . . . . . . . 22

Vent Connection To The Water Heater . . . . . . . . . . 23

Offset Vent Arrangement. . . . . . . . . . . . . . . . . . . . . 23

Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . 25

LIGHTING INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . .26

TEMPERATURE REGULATION . . . . . . . . . . . . . . . . . . .27

Temperature Regulation . . . . . . . . . . . . . . . . . . . . . 27

Temperature Adjustment

Operating The Temperature Control System. . . . . . 27

Water Temperature Adjustment Operating Modes And Settings

FOR YOUR INFORMATION. . . . . . . . . . . . . . . . . . . . . . . 28

External Damage . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Start Up Conditions . . . . . . . . . . . . . . . . . . . . . . . . . 28

Condensate Smoke/Odour

Thermal Expansion . . . . . . . . . . . . . . . . . . . . . . . . . 28

Strange Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Operational Conditions . . . . . . . . . . . . . . . . . . . . . . 29

Smelly Water “Air” In Hot Water Faucets High Water Temperature Shut Off System

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Housekeeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Flood Damage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Venting System Inspection . . . . . . . . . . . . . . . . . . . 30

Pilot And Main Burner . . . . . . . . . . . . . . . . . . . . . . . 30

Burner Flames. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Servicing The Water Heater . . . . . . . . . . . . . . . . . . 31

Removing And Replacing The Gas Control Valve/

Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Removing The Gas Control Valve/Thermostat: Replacing The Gas Control Valve/Thermostat:

Removing The Manifold/Burner Assembly . . . . . . . 31

Removing The Burner From The Manifold/Burner

Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Natural Gas (Low Nox) & Propane (LP) Gas Burner

Replacing The Pilot/Thermopile Assembly . . . . . . . 32

Replacing The Manifold/Burner Assembly . . . . . . . 33

Piezoelectric Igniter System . . . . . . . . . . . . . . . . . . 34

Testing The Igniter System . . . . . . . . . . . . . . . . . . . 34

Temperature-Pressure Relief Valve Test . . . . . . . . . 34

Draining, Reﬁ lling And Flushing . . . . . . . . . . . . . . . 34

To Drain The Water Heater Storage Tank To Reﬁ ll The Water Heater Storage Tank To Flush The Water Heater Storage Tank

Drain Valve Washer Replacement . . . . . . . . . . . . . 35

Anode Rod Maintenance. . . . . . . . . . . . . . . . . . . . . 35

To Remove The Anode Rod: To Install The Anode Rod:

LEAKAGE CHECKPOINTS . . . . . . . . . . . . . . . . . . . . . . .37

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

REFERENCE PARTS LISTING . . . . . . . . . . . . . . . . . . . .38

TROUBLESHOOTING GUIDELINES. . . . . . . . . . . . . . . .40

NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

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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.

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 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 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.

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GENERAL SAFETY

• Do not store or use gasoline or other flammable

• Avoid all ignition sources if you smell gas.

• Do not expose water heater control to excessive

• Use only gas shown on rating plate.

• Maintain required clearances to combustibles.

• Keep ignition sources away from faucets after

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WARNING

Fire or Explosion Hazard

vapours and liquids in the vicinity of this water heater, the vent termination hood or any other appliance.

gas pressure.

extended period of non-use.

Read instruction manual before

installing, using or servicing

water heater.

GENERAL SAFETY

DANGER

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Install vent system in accordance with codes.

• Do not operate water heater if flood damaged.

• For operation above 2347m (7,700’), a high altitude orifice must be installed.

• Do not operate if soot buildup is present.

• Do not place chemical vapor emitting products near water heater or vent termination hood.

• Gas and carbon monoxide detectors are available.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

FLAMMBLE

Vapours 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 or the vent termination hood. 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 or the vent termination hood where flammable products will be stored or used.

Flammable Vapours

Water heater has a main burner and pilot. While operating, the pilot flame:

1. is in continuous operation and

2. will ignite flammable vapours.

Vapours:

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 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. This water heater is suitable for potable water heating and space heating applications but not for space heating only applications.

Abbreviations found in this Installation and Operating manual:

• CSA - Canadian Standards Association

• ANSI - American National Standards Institute

• ASME - American Society of Mechanical Engineers

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

Z21.10.1 • CSA 4.1 (current edition).

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.

2. 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 “Natural Gas and Propane

Installation Code” B149.1 and “Canadian Electrical Code (C22.1), Part I” . All documents are available

from:

Canadian Standards Association, 5060 Spectrum Way, Mississauga, Ontario, Canada L4W 5N6

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 6). 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. Contact local utilities for code requirements in your area.

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

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

1 Vent Termination Hood 2 Wall Plate 3 ***Vent Pipe 4 Cold Water Inlet Nipple/Diptube 5 **Combo Heating System Supply

Outlet (Optional) 6 T&P Valve 7 Gas Control Valve/Thermostat

(Honeywell) 8 **Combo Heating System Return

Inlet (Optional) 9 *Discharge Pipe 10 Drain Valve 11 Outer Gas Door 12 Manifold Door Assembly (behind

outer door) (see Figure 3 &

Figure 4) 13 *Floor Drain 14 *Metal Drain Pan 15 Flexible Manifold Tube (see

Figure 3 & Figure 4)

TYPICAL INSTALLATION

16 *Sediment Trap 17 *Ground Joint Union (gas

connection) 18 *Main Manual Gas Shut-off Valve 19 *Gas Supply 20 Bafﬂ e Assembly 21 Rating Plate 22 Anode (under cap) 23 Hot Water Outlet Nipple (or

Optional Nipple/Anode) 24 *Inlet Water Shut-off Valve 25 *Union (water connection) 26 Air Inlet Snorkel 27 Air Tower 28 ***Airbox 29 *Thermal Expansion Tank (required

for all closed systems) 30 Sheet Metal Burner (see Figure 3 &

Figure 4) 31 Gas Oriﬁ ce (see Figure 3 &

Figure 4)

32 Gas Manifold (see Figure 3 &

33 Manifold Door Gasket (see Figure 3

34 Manifold Door (see Figure 3 &

35 Two Piece Grommet With Clip (see

36 Viewport (see Figure 3 & Figure 4) 37 Flexible Manifold Tube (see

38 Pilot (see Figure 3 & Figure 4) 39 Thermopile (see Figure 3 &

40 Pilot Shield (see Figure 3 &

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

Figure 4)

& Figure 4)

Figure 4)

Figure 3 & Figure 4)

Figure 4)

1 32

19 18 17

11 12

Front View

Figure 1

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Rear View

Figure 2

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

Figure 5

Natural gas and Propane (LP) main burner with igniter assembly for 38k to 42k Btu/hr models

Figure 3

Natural gas and Propane (LP) main burner with igniter assembly for 47k Btu/hr models

4039

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.

*** During operation the vent pipe and airbox can get hot.

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 (items 5 and 8 in Figure 1 and see also Figure 8). If the heater is to be operated without using the side taps, these openings must be closed with the two pipe plugs supplied with the heaters.

HIGH LIMIT CONTROLS (ENERGY CUT OFF) Thermostat/Water Temperature

This feature is a part of the gas control valve/thermostat (see Figure 1, item 7) and limits the maximum water temperature. In the event of the water overheating, this safety feature shuts off the fuel supply to the burner.

Figure 4

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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 position. Figure 27 shows the venting distances that the heater can be from the outside wall. Ensure the vent termination position maintains the clearances as outlined in Figure 27 thru Figure 29.

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

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

CAUTION

• 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.

EXTERNAL/INTERNAL DAMAGE

Do not operate the water heater until it has been fully checked out by a qualiﬁ ed technician, if the water heater:

• Has been exposed to ﬁ re or damage.

• Displays evidence of sooting.

• Produces steam or unusually hot water.

If the water heater has been ﬂ ooded it must be replaced.

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 25mm (1”) 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 45mm (1.75”). 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:

• 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.

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AIR REQUIREMENTS

For safe operation an adequate supply of fresh, uncontaminated air must be provided for combustion. This gas-ﬁ red water heater is a direct vent model. It connects directly to the outside of the building through the vent termination hood. The hood operates as both the combustion air intake and the heater exhaust port (see Figure 15). All combustion air is obtained from outside the building through this hood. Ensure the area around the termination hood is always kept clear and that the air supply is not exposed to contamination or ﬂ ammable vapours.

CONFINED SPACE INSTALLATIONS

This water heater connects to the vent termination hood using the sealed air intake and exhaust piping (see Figure 1 and Figure 2). During operation this piping can become hot, especially in areas experiencing high ambient temperatures. When installed in a conﬁ ned space such as a closet, it is recommended that the conﬁ ned space be ventilated to minimize the buildup of heat around the heater. Figure 6 and Figure 7 show an examples of ventilating a conﬁ ned space.

0mm

(0”) MIN.

TOP VIEW

OF CLOSET

WITHOUT DOOR

0mm

(0”) MIN.

(5.5”) MIN.

140mm

TOP VIEW OF

CLOSET WITH

DOOR

0mm (0”) MIN.

Figure 6

ROOM AIR

FLOW

VENTILATION

AIR

OPENING

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 76mm (3”) 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.

Clearance For Servicing

Adequate clearance of 610mm (24”) for servicing this appliance should be considered before installation, such as changing the anodes, etc.

A minimum clearance of 140mm (5.5”) must be allowed for access to replaceable parts such as thermostats, drain valve and relief valve. 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.

CHEMICAL VAPOUR CORROSION

CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN CHEMICAL VAPOURS. SUCH CORROSION MAY RESULT IN FAILURE AND RISK OF ASPHYXIATION. Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride (water softener salt), waxes, and process chemicals are typical compounds which are potentially corrosive. Do not store products of this sort near the heater or the vent termination hood. Air which is brought in contact with the heater or the vent termination hood should not contain any of the chemicals. The Limited Warranty is voided when failure of water heater is due to a corrosive atmosphere. See “Limited Warranty” for complete terms and conditions.

ROOM AIR

FRONT VIEW

OF DOOR

FLOW

Figure 7

Clearances To Combustibles

Minimum clearances between water heater and combustibles are 0mm (0”) at the sides and rear, 140mm (5.5”) from the front and 305mm (12”) from top. Minimum clearances from vent piping to combustibles is 25mm (1”) except as noted in Figure 20. If clearances stated on the heater differ from these clearances, install water heater according to clearances stated on the heater (see Figure 6).

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WARNING

Fire or Explosion Hazard

• Do not store or use gasoline or other flammable vapours

and liquids in the vicinity of this water heater, the vent termination hood, 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.

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.

The water heater must be located and/or protected so it is not subject to physical damage by a moving vehicle.

Propellants of aerosol sprays and volatile compounds, (cleaners, chlorine based chemicals, refrigerants, etc.) in addition to being highly ﬂ ammable in many cases, will also react to form corrosive hydrochloric acid when exposed to the combustion products of the water heater. The results can be hazardous, and also cause product failure.

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. Do not install any insulation blankets on this water heater.

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Install water heater in accordance with the instruction manual and B149.1.

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

• Do not place chemical vapor emitting products near water heater or near the vent termination hood.

• Do not obstruct the vent termination hood.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

STORAGE OF FLAMMABLE LIQUIDS

Flammable liquids (such as gasoline, solvents, propane (LP or butane, etc.) and other substances (such as adhesives, paints, etc.) emit ﬂ ammable vapours which can be ignited by a gas water heater’s pilot or main burner. The resulting ﬂ ashback and ﬁ re can cause death or serious burns to anyone in the area. Even though this water heater is a ﬂ ammable vapours ignition resistant (FVIR) water heater and is designed to reduce the chances of ﬂ ammable vapours being ignited, gasoline and other ﬂ ammable substances should never be stored or used in the same vicinity or area containing a gas water heater, the vent termination hood, or other open ﬂ ame or spark producing appliance. Examples of such locations are garages, storage and utility areas.

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WATER PIPING Water Pressure

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. See also “Closed Water Systems” and “Thermal Expansion” sections.

Mixing Valves

HOT WATER CAN SCALD: Water heaters are intended to heat 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.

Short repeated heating cycles caused by small hot water uses can cause a temperature increase of the hot water by 11C° (20F°) higher than the heater’s temperature settings.

SUGGESTED PIPING

ARRANGEMENT FOR

TOP CONNECTIONS

MIXING VALVE

TEMPERED POTABLE WATER

SHUT-OFF

VALV E

COLD WATER

INLET

Water temperature over

DANGER

52°C (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.

HOT

Temperature limiting devices such as mixing must be installed when required by

BURN

codes and to ensure safe temperatures at fixtures.

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 (see Figure 8).

TEMPERATUREPRESSURE RELIEF VALVE

DISCHARGE PIPE (DO NOT CAP OR PLUG)

GAS SUPPLY

305mm ( 12”) MAX. AIR GAP*

Figure 8

CERTAIN

MODELS ARE EQUIPPED WITH SIDE PLUMBING

CONNECTIONS

FOR SPACE HEATING. THE HOT AND COLD FITTING

ASSEMBLIES

(PART #9001262)

CAN BE ORDERED

THROUGH THE

MANUFACTURER

METAL DRAIN

PAN

DRAIN VALV E

Water

Temperature

°C (°F)

Time for 1st

Degree Burns

(Less Severe Burns)

Time for Permanent

Burns 2nd & 3rd

Degree (Most

Severe Burns)

44 (110) (normal shower temp.) 47 (116) (pain threshold) 47 (116) 35 minutes 45 minutes 50 (122) 1 minute 5 minutes 55 (131) 5 seconds 25 seconds 60 (140) 2 seconds 5 seconds 65 (149) 1 second 2 seconds 68 (154) instantaneous 1 seconds

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

Table 1

In addition to using lowest possible temperature setting that satisﬁ es demand of application, a mixing valve should be installed at the water heater (see Figure 8) 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.

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INSTALLING THE NEW WATER HEATER

WATER PIPING INSTALLATION 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 (see “Venting”).

• 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 ﬁ ttings that are compatible

with potable water.

• It is recommend that only full ﬂ ow ball or gate valves

are used in water piping installations. The use of valves that may cause excessive restriction to water ﬂ ow 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. Piping, ﬁ ttings, and valves should be installed according to the installation drawing (see Figure 9). If the indoor installation area is subject to freezing temperatures, the water piping must be protected by insulation. Important: Heat must not be applied to the water ﬁ ttings 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 ﬁ ttings. Important: Always use a good grade of joint compound and be certain that all ﬁ ttings are drawn up tight.

1. Install the water piping and ﬁ ttings as shown in Figure

9. Connect the cold water supply (3/4” NPT) to the cold water inlet ﬁ tting. Connect the hot water supply (3/4” NPT) to the hot water outlet ﬁ tting.

Important: These models may contain energy saving heat traps to minimize the migration of heat to 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. If installing the water heater in a closed water system,

install an expansion tank in the cold water line as speciﬁ ed under “Closed Water Systems” and “Thermal Expansion”.

4. 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.

5. 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 ﬁ ll with water. To purge the lines of any excess air, keep the hot water faucet open for 3 minutes after a constant ﬂ ow of water is obtained. Close the faucet, reinstall the aerator and check all connections for leaks. Repair as needed.

HOT WATER

OUTLET

UNION

3/4” SWEAT

FITTING

SOME

COMPONENTS

NOT SHOWN

FOR CLARITY.

SHUT-OFF

VALV E

UNION

EXPANSION

3/4” SWEAT

FITTING

TEMPERATUREPRESSURE RELIEF VALVE

DISCHARGE PIPE (DO NOT CAP OR PLUG)

DRAIN VALV E

305mm ( 12”) MAX. AIR GAP

FLOOR DRAIN

COLD

WATER

INLET

TANK

METAL DRAIN PAN

Figure 9

Figure 9 shows typical attachment of water piping to the water heater. The water heater is equipped with 3/4” NPT water connections.

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 when heated. 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.

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A properly-sized and charged thermal expansion tank must 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.

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

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 305mm ( 12”) 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

9.14m [30’]), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve.

Property Damage Hazard

• Avoid water heater damage.

• Install thermal expansion tank if necessary.

• Do not apply heat to cold-water inlet or hot-water outlet.

• Contact qualified installer or service agency.

TEMPERATURE-PRESSURE RELIEF VALVE

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.

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 305mm ( 12”) 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

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 305mm ( 12”) 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.

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.

For safe operation of the water heater, the temperaturepressure relief valve must not be removed from its

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DANGER

HOT

BURN

• Burn hazard.

• Hot water discharge.

• Keep clear of

temperature-pressure relief valve discharge.

The T&P valve must be manually operated 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 temperaturepressure 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.

1. Locate the hot water (outlet) and cold water (inlet) pipes to the water heater.

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

3. 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 ﬂ ush with the water heater. Once seated, secure the insulation with duct tape, electrical tape, or equivalent.

4. Repeat steps 2 and 3 for the hot water (outlet) pipe.

5. Add additional sections of pipe insulation as needed.

FILLING THE WATER HEATER

CAUTION

Property Damage Hazard

• Avoid water heater damage.

• Fill tank with water before operating.

• 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.

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

Manual Relief Lever

T&P Relief Valve

T&P Relief Valve Drain Line

Figure 10

Locate the temperature and pressure relief valve on the water heater (also known as a T&P relief valve) (see Figure 10).

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 10). 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, electrical tape, or equivalent.

Important: The insulation and tape must not block the discharge opening or hinder access to the manual relief lever (Figure 10). Ensure a discharge pipe is installed into the T&P valve discharge opening per the instructions in this manual.

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 9).

2. Important: 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 in 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. 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.

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SPACE HEATING AND POTABLE WATER SYSTEMS

This appliance has been design certiﬁ ed as complying with American National Standard/CSA Standard for water heaters and are considered suitable for Water (Potable) Heating and Space Heating. Note: This water heater may be used in combination potable water/space heating system. Do not use in a space heating only application.

WARNING

Toxic Chemical Hazard

• Do not connect to non-potable water system.

Note: Ensure the water heater has been properly sized to accommodate the needs of the hot water demand and space heating load. Undersizing the water heater can result in insufﬁ cient hot water, excessive condensation and inefﬁ cient operation.

• 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.

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

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 8 for suggested piping arrangement.

• 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.

• 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.

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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 11 & Figure 12).

Installation

The heating mode may be one of the following options: A. A fan coil/air handler (Figure 11). B. A hydronic baseboard (ﬁ nned tube) loop/In ﬂ oor heating

(Figure 12). 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

8 in TO

12 in MAX.

HOT

OUTLET

EXPANSION TANK (OPTIONAL)

COLD SUPPLY

CHECK VALVE (IF USED REQUIRES EXPANSION TANK)

MIXING

VALV E

C H

WATER

HEATER

COLD INLET

FLOW CONTROL

AIR

HANDLER

CHECK VALV E

HOSE BIB

(OPT.)

SUPPLY

EXTERNAL CIRCULATOR

RETURN

DRAIN/ PURGE VALV E

INTERNAL

CIRCULATOR

Figure 11

HOT WATER

TO HOUSE

FIXTURE

8 in TO

12 in MAX.

HOT

OUTLET

EXPANSION TANK (OPTIONAL)

COLD SUPPLY

CHECK VALVE (IF USED REQUIRES EXPANSION TANK)

MIXING

VALV E

C H

WATER

HEATER

COLD INLET

FLOW CONTROL

CHECK VALV E

HOSE BIB

(OPT.)

SUPPLY

EXTERNAL CIRCULATOR

RETURN

HYDRONIC

BASEBOARDS

(SERIES

CONNECTED

SHOWN)

Figure 12

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GAS PIPING

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.

WARNING

Explosion Hazard

Have a qualified technician make sure that the L.P. gas operating pressure does not exceed 13" 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 13 inch w.c. for natural gas and propane (LP) 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 “Natural Gas and Propane Installation Code” B149.1 . Copper or brass tubing and ﬁ ttings (except that which is certiﬁ ed for gas usage) should not be used. If the gas control valve/thermostat is subjected to pressures exceeding 1/2 psi (14 inch w.c.), the damage to the gas control valve/thermostat could result in a ﬁ re or explosion from leaking gas.

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 manual gas 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.

WARNING

Fire and Explosion Hazard

• Use joint compound or tape

compatible with 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 manual gas 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 gas 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 the method shown in Figure 13.

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 the “Natural Gas and Propane Installation Code” B149.1 and your gas supplier concerning pipe size.

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BLACK PIPE

Installations above 2,347m (7,700’). require replacement of the burner orifice in accordance with the current edition of the “Natural Gas and Propane Installation Code” B149.1 . Failure to replace the oriﬁ ce could result in improper and inefﬁ cient operation of the appliance,

HIGH ALTITUDE INSTALLATIONS

76mm

(3”) MIN.

SEDIMENT

CAP

TRAP

GROUND

JOINT

UNION

(OPTIONAL)

GAS

CONTROL

VALV E

producing carbon monoxide gas in excess of safe limits, which could result in serious personal injury or death. Contact your gas supplier for any speciﬁ c changes which may be required in your area.

Figure 13

SEDIMENT TRAP

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-

A sediment trap should be installed as close to the inlet of the water heater as practical at the time of water heater installation. 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 the method of installation shown in Figure 13. 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 must be readily accessible. Install in accordance with the “Gas Piping” section. Refer to the current edition of the “Natural Gas and Propane Installation Code” B149.1 .

dance with B149.1.

WARNING

Breathing Hazard - Carbon Monoxide Gas

• High altitude orifice must be

installed for operation above 2,347 metres (7,700 ft.).

• Contact a qualified installer or

service agency.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

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VENTING

This direct vent water heater uses a sealed venting system to supply fresh combustion air to the heater and to exhaust the products of combustion (ﬂ ue gases) to the outdoors. The venting is a “pipe in a pipe” system. The inner (3”) piping carries out the exhaust ﬂ ue gases while the outer (6”) piping carries in fresh combustion air. The corrugated end of the vent piping connects to the top of the water heater and the opposite end connects to the vent termination hood which will be mounted on the exterior wall (see Figure 15). Figure 15 shows the hot exhaust gas exit and the location of the combustion air intake. Figure 18 thru Figure 25 show how to assemble and connect the venting system. Figure 27 thru Figure 29 show various installation options.

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPOURS AND LIQUIDS IN THE VICINITY OF THE VENT TERMINATION HOOD.

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.

• Do not place chemical vapor emitting products near

water heater or vent terminal hood.

• 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.

• Chemical corrosion of flue and vent system can

cause serious injury or death.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

NEVER OPERATE THE WATER HEATER UNLESS IT IS VENTED TO THE OUTDOORS AND HAS ADEQUATE AIR SUPPLY TO AVOID RISKS OF IMPROPER OPERATION, FIRE, EXPLOSION OR ASPHYXIATION.

DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE PROVIDED FOR SAFE OPERATION.

VENT TERMINAL CLEARANCES

The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the “Natural Gas and Propane Installation Code”

B149.1 as follows:

Figure 14

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FRESH

COMBUSTION

AIR IN

HOT EXHAUST GAS OUT

Figure 17

VENT CONNECTIONS

After the location for the vent terminal has been selected as outlined in Figure 6 & Figure 14, use the following illustrations for installation:

SCREW

Figure 15

Be sure venting is properly connected to prevent escape of dangerous flue gases which could cause deadly asphyxiation.

DV TERMINATION SAFETY COVER

When the heater is in operation the vent termination hood will be hot (see Figure 15).

A Safety cover (see Figure 16) is available to prevent accidental contact with the vent terminal. Contact your Customer Service Department for ordering information.

LOCATING CLEARANCE HOLE FOR VENT

Cut a clearance hole, approximately 178mm (7”) in diameter, through the exterior wall for the vent assembly. The recommended height is 1.62m (64”) for 151l (40 gal.) models, 1.85m (73”) for 189l (50 gal.) models and 1.88m (74”) for 189l (50 gal.) Hi-Input models, as measured from the hole center to bottom of water heater. Where the wall is combustible and the wall thickness is over 356mm (14”), 25mm (1”) clearance to combustible surfaces around the vent terminal is needed. The ﬁ rst 356mm (14”) is zero clearance (see Figure 20).

STANDARD VENT ARRANGEMENT * If the horizontal length of the venting is less than 762mm

(30”) the restricter plate must be installed (see Figure 21,

Figure 27 thru Figure 29).

• Do not use the restricter plate in an offset installation

(see Figure 25).

• Do not use the restricter plate the horizontal length of

the venting is greater than 762mm (30”).

Note: The length of “unstretched” corrugated tube could cause the length of the vent run to exceed the minimum. In this case cut off a piece of the corrugated tube to achieve the 432mm (17”) minimum vent length.

Figure 16

Alternatively, a wire mesh or louvered fencing guard can be built around the termination as shown in Figure 17.

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VENT ASSEMBLY

The vent piping and the vent termination hood are to be connected as shown in Figure 19. Maintain vent clearances to combustibles as shown in Figure 20. Depending on your access to where the vent termination passes through the wall, you may wish to connect the piping and vent termination hood together ﬁ rst. Inside the vent piping there are springs that hold the two corrugated pipes in position. When the pipes are stretched to the required length, the springs will remain properly spaced. To connect the vent piping to the vent termination hood, ﬁ rst slide the inner (3”) corrugated pipe over the inner vent termination pipe. Continue this action until the locking clip on the corrugated pipe snaps into position in the corresponding groove (see Figure 18). Secure corrugated pipe with screw (supplied) inserted through hole opposite the locking clip. Repeat this process with the outer (6”) corrugated pipe and lock it into position on the outer pipe on the vent termination (see Figure 18). Secure corrugated pipe with screw (supplied) inserted through hole opposite the locking clip. Note: To reduce the friction between the corrugated pipe and the O-rings, it is recommended to dampen the O-rings with water. The completed connection is shown in Figure 19.

OUTER

CORRUGATED

PIPE

LOCKING

CLIP

INNER VENT

TERMINATION PIPE

O-RING

OUTER VENT

TERMINATION PIPE

junction of the vent terminal base plate and the exterior wall with exterior type sealant (not included). Slide the trim plate (inside) over the outer corrugated tube and fasten the trim plate to the interior wall. Caulk the junction of the outer corrugated tube and the trim plate (inside) with suitable sealant. The vent termination hood attaches to the vent piping as shown in Figure 19.

25mm (1”)

CLEARANCE

SPRING

CUTAWAY TO

SHOW SPRING

PLACEMENT

TRIM PLATE

(INSIDE)

APPLY

SEALANT

356mm

(14”) ZERO

CLEARANCE

TRIM PLATE

(OUTSIDE)

APPLY

SEALANT

Figure 20

VENT RESTRICTER PLATE

The vent restricter plate (see Figure 21) is required for short horizontal runs on low vent installations (see Figure

28) and high vent installations (see Figure 29). For short horizontal vent runs (see Figure 28) place the restricter plate over the ﬂ ue tube reducer before connecting the inner corrugated tube to the ﬂ ue tube reducer. DO NOT use the restricter plate if the horizontal run is greater than 762mm (30”). For high vertical runs use the restricter plate only when the vertical run of the venting above the heater is greater than 1.21m (48”) (see Figure 29).

INNER

CORRUGATED PIPE

LOCKING CLIP

GROOVE

Figure 18

SCREW

Figure 19

SECURING VENT TERMINATION ASSEMBLY TO THE EXTERIOR WALL

Some models are supplied with trim plates which may be used to cover the holes in the wall (see Figure 1 and Figure 20). Slide one trim plate (if supplied) over the outer corrugated tube, then insert the outer corrugated tube through the clearance hole from exterior wall. Secure the trim plate to the exterior wall, then secure the vent terminal to the exterior wall with 4 screw anchors (included) appropriate for the type of wall construction. Caulk the

FLUE TUBE REDUCER

UPPER AIR INLET BOX

RESTRICTER PLATE

Figure 21

UNCOMPRESSING THE CORRUGATED TUBING

1. Pull the inner corrugated tube towards the water heater and leave some length over the water heater’s center for bending (see Figure 22).

2. Pull the outer corrugated tube toward the water heater and leave it 50mm (2”) shorter than the inner corrugated tube.

3. Make sure there are two springs evenly spaced at the bend in the tube.

4. Use metal hangers to keep venting level or with a slope upward from the heater to terminal.

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OUTER

CORRUGATED PIPE

INNER

CORRUGATED

PIPE

RESTRICTER

PLATE

FLUE TUBE

REDUCER

APPLY

SILICONE

SMOOTH,

EASY CURVE

APPLY

SILICONE

TO AIRBOX

BEFORE

ATTACHING

PIPING

SECURE

WITH A

SHEET METAL

SCREW

GEAR

CLAMP

Figure 22

VENT CONNECTION TO THE WATER HEATER

Bend both the corrugated pipes toward the ﬂ ue connection on the water heater. Pull and connect the inner corrugated pipe to the water heater’s ﬂ ue tube reducer with hi-temp red silicone (included) and gear clamp. Make sure this connection is tight and leak proof (see Figure 23). *The sealant between the inner corrugated pipe and water heater’s ﬂ ue tube reducer must be hi-temp red silicone or other material suitable for 315°C (600°F) continuous service.

Note: If you are using the vent restricter plate, the inner vent pipe is to go over the side legs and down the stops.

SMOOTH,

EASY CURVE

RESTRICTER PLATE STOP

GEAR

CLAMP

Figure 24

OFFSET VENT ARRANGEMENT

Where a straight vent arrangement is impossible, a horizontal 90° maximum bend can be made. Use the water heater casing outer diameter as a template to form the corrugated tube.

SMOOTH,

EASY CURVE

90°

MAXIMUM

BEND

Figure 25

CUTAWAY TO

SHOW DETAILS

Figure 23

Apply hi-temp red silicone (included) around the collar on air manifold box. Pull the outer corrugated pipe all the way on to collar and secure with the gear clamp. Pull the free end of the corrugated pipe past the gear clamp and secure with one sheet metal screw (see Figure 24).

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Figure 26

Note: To ensure good exhaust gas ﬂ ow, bend vent piping

using a smooth, easy curve as shown in Figure 23 thru Figure 25. Do not use reverse or compound curves as shown in Figure 26.

Low Vent installation

High Vent installation

ABOVE ANTICIPATED SNOW LEVEL

OR 305mm

(12”) ABOVE

GRADE

Figure 27

DIM. 4038 5040 5047

A 2.03m (80”) MAX.

B 228mm (9”) MIN.

(RECOMMENDED)

(MINIMUM)

D 362mm (14.25”) MIN.

NOTE: Dimension “C” is the height above to ﬂ oor to the center of the termination hole through the exterior wall.

1.62m (63.63”) 1.85m (73.00”) 1.88m (74.00”)

1.54 (60.75) 1.75 (69.50) 1.79 (70.50)

432mm

(17”) MIN.

1.83m (72”)

MAX.

305mm

(12”) MIN.

BELOW SOFFIT

Minimum Vent installation

228mm

(9”)

Figure 28

Figure 29

NOTES: (applies to Figure 27 thru Figure 29)

1. In any installation the total of dimension “A” plus

ABOVE

ANTICIPATED SNOW LEVEL

OR 305mm

(12”) ABOVE

GRADE

dimension “B” must not exceed 2.26m (89”).

2. This heater can be installed with 0mm (0”) clearance to a wall.

3. Minimum vent pipe clearance to combustibles is 25mm (1”) (see Figure 20).

4. Minimum distance from center of heater to wall is 362mm (14.25”).

5. Dimension “A” includes wall thickness.

6. Hole diameter in wall is 178mm (7”).

7. Venting must slope up away from the heater a minimum of 6.4mm per 305mm (0.25” per foot) of length to prevent condensation from collecting and to provide sufﬁ cient draft.

8. Distance above horizontal at full extension is 50mm (2”).

9. Use support stays to hold the venting to avoid sags or valleys.

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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



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.

Installation area free of corrosive elements, flammable



material and flammable vapour emitting products. Sufficient room to service the water heater.



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. Adequate pipe size and of approved material.



Approved pipe joint compound or tape used.



Chloride-free soap and water solution or other



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

Vent Termination Hood

Securely fastened to exterior wall.



Above anticipated snow level or 305mm (12”) above



grade. Proper clearances from windows, doors, corners,



other vent openings etc. Area around vent termination hood clear and



unobstructed. No flammable vapour emitting products stored nearby.



Safety covers in place (when applicable).



Water System Piping

Temperature-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 precautions installed.



Mixing valve installed (when applicable).



After all actions on checklist are checked/

completed, read the Lighting Instructions and

proceed with lighting the heater.

Vent Pipe System

Evenly stretched out between water heater and vent



termination hood. Smooth bend with adequate support to prevent



sagging, 6.4mm per 305mm (0.25” per foot). Inside pipe (3”) and outside pipe (6”) securely



fastened to vent termination hood. Vent restricter plate installed on heater flue outlet as



applicable. Inside pipe (3”) and outside pipe (6”) securely fastened



to water heater with silicone and gear clamps. Not obstructed in any way.



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LIGHTING INSTRUCTIONS

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 LIGHTING: ENTIRE SYSTEM MUST BE FILLED

WITH WATER AND AIR PURGED FROM ALL LINES

A. This appliance has a pilot which is lit by a piezoelectric

spark gas ignition system. Do not open the inner door of the appliance and try to light the pilot by hand.

B. BEFORE LIGHTING smell all around the appliance area for

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

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

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

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

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

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

Never use tools. If the knob will not push in or turn by hand, don't try to repair it, call a qualif ied 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!

LIGHTING INSTRUCTIONS

Gas Control & Temperature Knob / Bouton réglage du gaz & temp.

GAS CONTROL / COMMANDE DU GAZ

1. STOP! It is imperative that you read all safety warnings

before lighting the pilot.

2. Turn the gas control/temperature knob counterclockwise to the "OFF" position.

3. Wait ten (10) minutes to clear out any gas. If you then smell gas,

STOP! Follow “ B” in the safety information above on this label. If you do not smell gas, go to the next step.

4. Turn the gas control/temperature knob clockwise to “PILOT”. See Figure ‘B’.

5. Press the gas control/temperature knob all the way in and hold it in. The knob should travel in about 6mm (1/4 inch) if it is set to "PILOT" correctly. While holding the gas control/temperature knob in, click the igniter button continuously (about once a second) for up to 90 seconds or until Status Light begins to blink. The pilot flame should envelop the thermopile. See Figure ‘D’.

6. When the status light starts blinking, release the gas control/temperature knob. Set the gas control/temperature knob to the desired setting. See Figure ‘C’.

• If the status light does not start blinking within 90 seconds,

repeat steps 2 through 5 up to THREE (3) times, waiting 10 minutes between lighting attempts.

• The circuitry in this advanced gas valve requires that you wait

10 minutes between lighting attempts.

• If the status light turns a solid color, release the gas

control/temperature knob and repeat steps 2 through 5 (waiting 10 minutes before attempting to relight the pilot). If the status light does not start blinking after three lighting attempts, turn the gas control/temperature knob to the "OFF" position and call a qualified service technician or your gas supplier.

DANGER:

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

Refer to the Lighting Instructions in the Installation Manual for

more detailed troubleshooting information.

Status Light / Témoin lumineux Igniter Button / Bouton allumeur

FIGURE 'A'

Repère

120°F

Mark

"OFF" POSITION POSITION "OFF"

CONTROL KNOB / BOUTON DE RÉGLAGE DU GAZ

TO TURN OFF GAS TO APPLIANCE

1. Turn the gas control/temperature knob counterclockwise to the "OFF" position. The status light will stop blinking and stay on for a short time after the water heater is turned off. See Figure ‘A’.

POUR VOTRE SÉCURITÉ, LISEZ

ATTENTIVEMENT AVANT L’ALLUMAGE

AVERTISSEMENT: Tout manquement aux présentes

directives peut causer un incendie ou une explosion

FLAMMABLE

entraînant des dommages matériels, des blessures ou la mort.

AVANT L’ALLUMAGE: LE RÉSEAU D’ALIMENTATION EN EAU DOIT

ÊTRE ENTIÈREMENT REMPLI D’EAU ET L’AIR ENTIÈREMENT PURGÉ

A. L’allumage de la veilleuse de cet appareil au gaz est assuré par un système

d’allumage piézoélectrique à étincelles. Ne tentez pas d’ouvrir la porte d’accès interne et d’allumer la veilleuse manuellement.

B. AVANT L’ALLUMAGE, humez l’air tout autour de l’appareil afin d’y déceler

une éventuelle odeur de gaz. Humez aussi l'air près du sol, car certains gaz sont plus lourds que l’air et s’y accumulent.

SI VOUS DÉTECTEZ UNE ODEUR DE GA Z

• Ne mettez aucun appareil en marche.

• Ne touchez à aucun interrupteur; ne vous servez pas des téléphones se trouvant dans le bâtiment.

• Appelez immédiatement votre fournisseur de service de gaz à partir du téléphone d’un voisin et suivez ses directives.

• Si vous ne pouvez communiquer avec votre fournisseur de service de gaz, appelez le service des incendies.

C. Le bouton de réglage du gaz ne doit être enfoncé ou tourné qu’à la main;

n’utilisez jamais d’outil. Si le bouton reste coincé, ne tentez pas une réparation; appelez plutôt un technicien d'entretien qualifié. Si vous forcez ou tentez de réparer le bouton, il a risque d’explosion ou d’incendie.

D. N’utilisez pas cet appareil même s’il n’a été que partiellement submergé par

de l’eau. Communiquez immédiatement avec un installateur qualifié ou un centre de service afin de faire remplacer tout chauffe-eau ayant été submergé lors d’une inondation. Ne tentez jamais de réparer l’appareil! Il doit être remplacé!

DIRECTIVES D'ALLUMAGE

FIGURE 'B'

Repère

120°F

Mark

"PILOT" POSITION POSITION "PILOT"

1. ARRÊTEZ! Il est essentiel de lire attentivement tous les messages

2. Tournez le bouton de réglage du gaz/température dans le sens antihoraire jusqu'à la position "OFF".

3. Afin de laisser se dissiper tout gaz ayant pu s'accumuler, attendez dix (10) minutes. Si vous détectez une odeur de gaz, ARRÊTEZ! Suivez la directive de sécurité "B" au haut de cette étiquette. Si vous ne détectez pas d’odeur de gaz, procédez à la prochaine étape.

4. Tournez le bouton de réglage du gaz/température dans le sens horaire jusqu'à la position "PILOT" (Figure B).

5. Appuyez complètement sur le bouton de réglage du gaz/température et maintenez-le enfoncé. Le bouton peut s'enfoncer d'environ 6 mm (1/4 po), lorsqu'il est bien positionné à "PILOT". Tout en maintenant le bouton de réglage du gaz/température enfoncé, appuyez de façon répétitive (une fois par seconde) sur le bouton de l'allumeur (jusqu'à 90 secondes), ou jusqu'à ce que le témoin lumineux s'allume. La flamme de la veilleuse devrait envelopper la thermopile. Voir figure "D".

6. Lorsque le témoin lumineux se met à clignoter, relâchez le bouton de réglage du gaz/température. Réglez le bouton à la position désirée (Figure C).

• Si le témoin lumineux ne se met pas à clignoter en moins de 90 secondes,

reprenez les étapes 2 à 5 jusqu'à TROIS (3) reprises, en prenant une pause de 10 minutes entre chaque essai d'allumage.

• Le processeur sophistiqué de cette commande du gaz force une période

d'attente de 10 minutes entre chaque essai d'allumage.

• Si le témoin lumineux passe au une couleur unie continue, relâchez le

bouton de réglage du gaz/température et reprenez les étapes 2 à 5, en prenant une pause de 10 minutes entre chaque essai d'allumage. Si le témoin lumineux ne se met pas à clignoter en trois essais d'allumage, ramenez le bouton de réglage du gaz/température à la position "OFF" et faites appel à un technicien d'entretien qualifié ou à votre fournisseur du gaz.

Reportez-vous aux Directives d'allumage du manuel d'installation pour des

instructions de dépannage plus détaillées.

FIGURE 'C'

Repère

120°F Mark

"ON" POSITION POSITION "ON"

d’avertissement avant d’allumer la veilleuse.

DANGER:

DANGER: Plus l’eau est chaude, plus le risque d’ébouillantage est élevé. Consultez les directives du manuel à ce sujet avant de régler la température.

Pilot Flame /

Flamme de la veilleuse

Thermopile

FIGURE 'D'

COUPER L’ALIMENTATION

EN GAZ DE L’APPAREIL

1. Tournez le bouton de réglage du gaz/température dans le sens antihoraire jusqu'à la position "OFF". Le témoin lumineux cesse de clignoter et reste allumé un court moment après l'arrêt du chauffe-eau (Figure A).

FLAMMABLE

Main Burner / Brûleur

329353-000

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TEMPERATURE REGULATION

Temperature Adjustment

Valves for reducing the point-of-use temperature by mixing cold and hot water are available (see Figure 8). Also available are inexpensive devices that attach to faucets to limit hot water temperatures. Contact a licensed plumber or the local plumbing authority. Note: During low demand periods, 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 (e.g., 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.

GAS CONTROL VALVE/THERMOSTAT SETTINGS

GAS CONTROL/ TEMPERATURE KNOB

IGNITER

STATUS LIGHT

49°C

(120°F)

MARK

33°C

(91°F)

MARK

55°C

(130°F)

MARK

(140°F)

MARK

(150°F)

MARK

(155°F)

MARK

68°C

65°C

60°C

Figure 30

The thermostat is adjusted to the “OFF” position when it is shipped from the factory. Water temperature can be regulated by moving the temperature dial to the preferred setting. The preferred starting point is 49°C (120°F) at the “HOT” setting. Align the knob with the desired water temperature as shown in Figure 30. There is a hot water scald potential if the thermostat is set too high. Note: Temperatures shown on the gas control valve/ thermostat are approximates. The actual temperature of the heated water may vary.

Important: Adjusting the thermostat past the 49°C (120°F) mark on the temperature dial will increase the risk of scald injury. Hot water can produce ﬁ rst degree burns within:

Water

Temperature

°C (°F)

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

Time for 1st

Degree Burns

(Less Severe Burns)

Time for Permanent

Burns 2nd & 3rd

Degree (Most

Severe Burns)

Table 2

Should overheating occur or the gas supply fail to shut off, turn “OFF” the manual gas shut-off valve to the appliance (see Figure 1, item 18).

OPERATING THE TEMPERATURE CONTROL SYSTEM

Water Temperature Adjustment

The water temperature setting can be adjusted from 33°C (91°F) to 68°C (155°F). Turn the Gas Control Valve/ 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.

Setting for vacation - The “LOW” position sets the controller at approximately 33°C (91°F). This setting is recommended for times when the water heater will not be in use for an extended period of time. It effectively turns the controller temperature setting down to a temperature that prevents the water in the water heater from freezing while still conserving energy.

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FOR YOUR INFORMATION

EXTERNAL DAMAGE

Do not operate the water heater until it has been fully checked out by a qualiﬁ ed technician, if the water heater:

• Has been exposed to ﬁ re or damage.

• Displays evidence of sooting.

• Produces steam or unusually hot water.

If the water heater has been ﬂ ooded it must be replaced.

START UP CONDITIONS

NEVER OPERATE THE HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE HEATER. DO NOT ATTEMPT TO OPERATE HEATER WITH COLD WATER INLET VALVE CLOSED.

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 vapour 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 may be diagnosed as a “tank leak”. After the water in the tank warms up (about 1-2 hours), the condition should disappear.

Smoke/Odour

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

THERMAL EXPANSION

Water supply systems may, because of such events as high line pressure, frequent cut-offs, the effects of water hammer among others, have installed devices such as pressure reducing valves, check valves, back ﬂ ow preventers, etc. to control these types of problems. When these devices are not equipped with an internal by-pass, and no other measures are taken, the devices cause the water system to be closed. As water is heated, it expands (thermal expansion) and closed systems do not allow for the expansion of heated water.

As water is heated, it expands (thermal expansion). 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.

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 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 ﬁ red water heater to operate properly as well as to carry away products of combustion and water vapour.

28 www. gsw-wh .com

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.

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. See “Condensate” in this section.

Sediment collecting over time in the bottom of the tank can result in “rumbling” or “percolating” sounds. Follow the directions given in “Draining, Reﬁ lling And Flushing”.

OPERATIONAL CONDITIONS Smelly Water

In each water heater there is installed at least one anode rod (see Figure 1, item 22) for corrosion protection of the tank. Some models will have an additional anode which is connected to the hot water outlet nipple (see Figure 1, item 23). Certain water conditions will cause a reaction between the anode 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 odour to develop:

“Air” In Hot Water Faucets

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, we recommend 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 hot water faucet is opened. There must be no smoking or open ﬂ ame near the faucet at the time it is open.

1. A concentration of sulfate in the supply water.

2. Little or no dissolved oxygen in the water.

3. A sulfate reducing bacteria which has accumulated within the water heater (this harmless bacteria is nontoxic to humans).

4. An excess of active hydrogen in the tank. This is caused by the corrosion protective action of the anode.

For certain water conditions, setting the gas control valve/ thermostat at 60°C (140°F) can reduce the smell generated in the water heater. Note: Under these conditions install a mixing valve to limit the temperature of the water delivered to the system (see “Water Piping” section).

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.

High Water Temperature Shut Off System

This water heater is equipped with an automatic gas shut-off system. This system works when high water temperatures are present. Turn “OFF” the entire gas supply to the water heater. The high temperature shut-off is built into the gas control valve. It is non-resettable. If the high temperature shut-off activates, the gas control valve must be replaced. Contact your gas supplier or service agency.

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

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+ 67 hidden pages

GSW ANSI Z21.10.1 - CSA 4.1, RESIDENTIAL GAS WATER HEATERS Installation And Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual