GSW 72090 Installation And Operating Instructions Manual
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GSW 72090 Installation And Operating Instructions Manual

Flammable vapor resistant water heater
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FLAMMABLE VAPOR RESISTANT WATER HEATER
INSTALLATION AND OPERATING INSTRUCTIONS
Read these instructions thoroughly before starting
WARNING:
Improper installation, adjustment, alter-
ation, service, or maintenance can cause
injury or property damage. Refer to this
manual. For assistance or additional infor-
mation, consult a qualified installer, serv-
ice agency, or the gas utility.
FOR YOUR SAFETY
• Do not store or use gasoline or other
flammable vapours and liquids in the
vicinity of this or any other appliance.
• Installation and service must be per-
formed by a qualified installer, service
agency or the gas utility.
WARNING:
If the information in these instructions is
not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury or death.
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.
GSW Water Heating is a division of
A. O. Smith Enterprises Ltd.
PART NO. 72090 REV. D (07-11)

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Summary of Contents for GSW 72090

  • Page 1 • 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. GSW Water Heating is a division of A. O. Smith Enterprises Ltd. PART NO. 72090 REV. D (07-11)
  • Page 2 This page intentionally left blank. May be used for notes or to record other installation information. – 2 –...

  • Page 3: Table Of Contents

    Backflow Prevention III) INSTALLATION ......6 Unpacking the Water Heater Location Requirements In Earthquake Zones...

  • Page 4: Service Technician

    We thank you for choosing a Flammable Vapor Resistant Water Heater. Your satisfaction with this product is very important to us. This gas-fired water heater has been developed to produce domestic hot water and may also be used in combination with space heating applications. The...

  • Page 5: Safety Warning (Flammable Vapours)

    The gas-fired water heater igniter or main burner flame can ignite these vapors causing a flashback, fire or explosion which may result in serious personal injury or death, as well as severe property damage.

  • Page 6: Iii) Installation

    4. Completely read and understand all instructions before attempting to assemble and install this product. If you observe damage to the water heater or any of its com- ponents, DO NOT ASSEMBLE OR INSTALL IT OR MAKE ANY ATTEMPT TO FIX THE DAMAGED PART(S). Contact the place of purchase for further instructions.

  • Page 7: Gas Supply

    Figure 7. If the water heater is located in an area that is subject to an excessive amount of lint, dirt or oil, it may be necessary to clean the flame arrester periodically (see “Maintenance”...

  • Page 8: Gas Pressure

    DO NOT PUT INTO SERVICE IF OVER-PRESSURIZATION HAS OCCURRED. GSW Water Heating Company recommends that the gas supply pressure, as measured on the inlet side of the water heater control, be set at 7.0 in. w.c.(1.7 kPa) for natural gas and 11.0 in.

  • Page 9: Air Requirements

    (b). When using a single air supply, the duct shall terminate within 300mm (12 in.) above and within 600mm (24 in.) horizontally of the burner level of the appliance having the largest input. For example: GSW’s water heaters’ burners are 150mm (6 in.) from the floor, plus 300mm CONFINED SPACE EQUIPMENT LOCATED IN CONFINED SPACES;...

  • Page 10: U.s. Installations

    Confined Space Air Requirements for U.S. Installations Refer to Figure 6 (a), (b), (c) or (d) for proper sizing and location of combustion air ducts and openings. CHECK LOCAL CODES. (a) Equipment located in confined spaces; all air from inside the building. Two permanent openings shall be provided connecting the confined space (e.g., closet, small room) with the unconfined space.

  • Page 11: Exhaust Venting

    Figure 9. Do not alter the drafthood in any way. If you are replacing an existing water heater be sure to use the new drafthood supplied with the water heater.

  • Page 12: Closed System/Thermal Expansion

    Refer to Figure 12 for a typical T&P valve installation. 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.

  • Page 13: The Temperature And Pressure Relief Valve

    Must be connected to an adequate discharge line. • Must not be rated higher than the working pressure shown on the data 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.

  • Page 14: Iv) Operating Instructions

    5 minutes at ..49°C (120°F) Temperature Adjustment The thermostat of this water heater has been factory set at its lowest position. It is adjustable and must be set to the desired temperature setting. The preferred starting point is 49°C (120°F).

  • Page 15: Lighting Instructions (Robertshaw 110R)

    Do not try to light any appliance. Do not touch any electric switch; do not use any phone in your building. 1. STOP! Read all safety labels on the water heater before operation. 2. Remove the outer door. 3. Turn the temperature dial counterclockwise est setting.

  • Page 16: Lighting Instructions (Robertshaw 220R)

    Do not try to light any appliance. Do not touch any electric switch; do not use any phone in your building. 1. STOP! Read all safety labels on the water heater before operation. 2. Remove the outer door. 3. Turn the temperature dial counterclockwise est setting.

  • Page 17: Lighting Instructions (White-Rodgers 37C)

    If you smell gas, STOP! Follow “B” in the safety information above on this label. If you don’t smell gas, go to the next step. 7. Make sure the water heater is filled with water. 8. Turn gas control knob counterclockwise (see Figure "A").

  • Page 18: Condensation

    (usually about 1 hour), the condensation will stop. Note: At initial start-up, in certain extremely cold conditions and if the water heater is not allowed enough time to reach the room temperature, the pilot burner might be extin- guished in the first 20 minutes from start-up due to heavy condensation.

  • Page 19: Vi) Maintenance

    The water heater should be drained if being shut down for extended periods of time. To drain the tank, perform the following steps: 1. Turn off the gas to the water heater with the manual gas shut-off valve. 2. Close the cold water inlet valve.

  • Page 20: External Cleaning Of The Flame-Arrester

    Note: Visually inspect the flame arrester by placing a mirror underneath the water heater. A flashlight can be used to illu- minate the slots in the flame arrester if necessary. Routine cleaning of the flame arrester is recommended if inspection shows accumulation of debris on the flame arrester.

  • Page 21: Vii) Combo Heating

    2. A water heater which will be used to supply potable water must not be connected to any heating system or components previously used with a non-potable water heating appliance.

  • Page 22: Viii) Troubleshooting Guide

    TCO-switch, loose connection or interrupted gas control leads. Thermostat set too high Sediment or lime in tank Water heater too small for job Wrong piping connections Leaking faucets Gas leaks Wasted hot water Long runs of exposed piping...
  • Page 23 Repair faucets Advise customer Insulate piping Insulate piping Check with gas utility company Provide ventilation to water heater. Check flue way, flue baffle and burner Clean flue, locate source and correct Check with gas utility company Replace gas control/thermostat Turn temperature dial to desired setting...

  • Page 24: For Installations In Canada 4 Ix) Repair Parts Illustration

    IX) REPAIR PARTS ILLUSTRATION 1. NIPPLE-HOT OUTLET 2. NIPPLE-COLD INLET 3. DRAFTHOOD 4. TEMPERATURE & PRESSURE RELIEF VALVE 5. REDUCER RING 6. ANODE 7. DIP TUBE 8. FLUE BAFFLE 9. DRAIN VALVE 10. BURNER/MANIFOLD ASSEMBLY 11. GAS CONTROL/THERMOSTAT 12. OUTER DOOR 13.

  • Page 25: Who Is Covered

    This warranty is not transferable. This warranty is reduced to one year if the water heater is used in a commercial, or industrial application, or if the water heater is used to supply more than one dwelling unit.
  • Page 26 The water heater is installed outdoors (this water heater is intended only for indoor installation); or n. The water heater is converted, or is attempted to be converted, from one voltage or wattage to another, if an elec- tric water heater, or from one type gas to another, if a gas water heater; or o.

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