A.O. Smith GPDH Owner's Manual
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A.O. Smith GPDH Owner's Manual

A.O. Smith GPDH Owner's Manual

A.o.smith gas water heater owners manual gpdh, gpdt, gpdx
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RESIDENTIAL
Thank you for buying this energy efficient water heater from
A.O. Smith Water Products Company. We appreciate your
confidence in our products.
You should thoroughly read this manual before installation and/
or operation of this water heater. Please pay particular attention
to the important safety and operating instructions as well as the
WARNINGS and CAUTIONS.
PRINTED IN U.S.A. 0805
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
GAS WATER HEATER
GPDH/GPDT/GPDX
GAS MODELS
Hot Surface Ignition

TABLE OF CONTENTS

GET TO KNOW YOUR WATER HEATER ...................... 2
GENERAL SAFETY INFORMATION ............................. 3
INSTALLATION ....................................................... 3-11
LIGHTING AND OPERATING LABEL ......................... 12
OPERATION .......................................................... 13-14
MAINTENANCE AND
TROUBLESHOOTING ........................................... 14-18
WARRANTY ................................................................ 19
TEXT PRINTED OR OUTLINED IN RED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ
THOROUGHLY BEFORE INSTALLING AND USING THIS
APPLIANCE.
A DIVISION OF A.O. SMITH CORPORATION
www.aosmithwaterheaters.com
1
OWNER'S MANUAL
with
CAUTION
PART NO. 184707-001
PAGE

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  • Page 1: Table Of Contents

    RESIDENTIAL Thank you for buying this energy efficient water heater from A.O. Smith Water Products Company. We appreciate your confidence in our products. You should thoroughly read this manual before installation and/ or operation of this water heater. Please pay particular attention to the important safety and operating instructions as well as the WARNINGS and CAUTIONS.

  • Page 2: Replacement Parts And Deliming Products

    Replacement parts and recommended delimer may be ordered through authorized servicers or distributors. Refer to the Yellow Pages for where to call or contact the A.O. Smith Water Products Company, 125 Southeast Parkway, Franklin, TN 37068, 1-800-433-2545. When ordering parts, provide complete model and serial numbers (see rating plate), quantity and name or part desired (as listed in Figure 1).

  • Page 3: General Safety Information

    INSULATION BLANKETS Insulation blankets available to the general public for external use on gas water heaters are not necessary with A.O. Smith products. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank water heaters.

  • Page 4: Location Of Heater

    Canadian Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH 44131, and both documents are available from the National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269. The appliance, when installed, must be electrically grounded in accordance with local codes or in the absence of local codes with the current edition of the National Electrical Code, ANSI/NFPA 70.

  • Page 5: Closed Water System

    CLOSED WATER SYSTEM A closed system will exist if a back-flow preventer (check valve), pressure reducing valve, or other similar device is installed in the cold water line between the water heater and the street main (or well). Excessive pressure may develop due to the thermal expansion of heated water causing premature tank failure or intermittent relief valve operation.

  • Page 6: Combustion Air And Exhaust

    COMBUSTION AIR AND EXHAUST WARNING WHEN DETERMINING THE INSTALLATION LOCATION FOR A POWER DIRECT VENT WATER HEATER, SNOW ACCUMULATION AND DRIFTING SHOULD BE CONSIDERED IN AREAS WHERE APPLICABLE. Venting Through an Outside Wall - Clearances • 0" clearance for 3" PVC, ABS, or CPVC Schedule 40 piping from combustible surfaces.

  • Page 7: Wire Fence

    WARNING VENT TERMINATION MUST NOT BE WITHIN 4 FEET (122 cm) OF ANY ITEMS SUCH AS GAS METERS, GAS VALVES OR OTHER GAS REGULATING EQUIPMENT. WIRE FENCE When the water heater outlet terminal is low enough to be touched accidentally, or is accessible to small children, a wire mesh chain link fence (as show in Figure 7) may be used.

  • Page 8: Venting System Example Installation For All Models

    FIGURE 11. STANDARD MODELS. If making an immediate horizontal run of vent off the blower, two 3" PVC or ABS Schedule 40 street elbows are required. The water heater requires its own (separate) venting system. 3" PVC, ABS or CPVC Schedule 40 piping and fittings are acceptable materials for the vent system.

  • Page 9: Vent Pipe Separation

    FIGURE 17. Cementing PVC, ABS or CPVC Pipe and Fittings Read and observe all safety information printed on printer, cleaner, and cement container. DANGER Primer, cleaner, and cements are extremely flammable. They are harmful or fatal if swallowed. The vapors are harmful. They may irritate eyes and skin and can be absorbed through the skin.

  • Page 10: Venting Through A Roof

    wall will help minimize discoloration of the wall. Note that the inside flue mounting adaptors must be slipped over the vent piping before locating the pipe through the wall. Before securing the inside and outside collars to the wall, use a silicone sealer between pipe and opening to insure a water and air tight seal.

  • Page 11: Schematic Diagrams

    GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN THE ABSENCE OF LOCAL CODES, WITH THE NATIONAL ELECTRICAL CODE, ANSI/NFPA 70. If local codes do not permit use of a flexible power supply cord. OPTIONAL Field Installed Wiring 1. Remove screws to remove wiring junction cover. 2.

  • Page 12: For Your Safety Read Before Operating

    FOR YOUR SAFETY READ BEFORE OPERATING WARNING: explosion may result causing property damage, personal injury or loss of life. BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner.

  • Page 13: Operation

    OPERATION 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. FILLING Close the heater drain valve by turning handle clockwise, Figure 1.

  • Page 14: Maintenance

    CARBON MONOXIDE GAS IN EXCESS OF SAFE LIMITS, WHICH COULD RESULT IN EXCESS OF SAFE LIMITS, WHICH COULD RESULT IN SERIOUS PERSONAL INJURY OR DEATH. A.O. Smith builds models specifically for high altitude service. Please check the rating plate before making changes. VENTING MANUAL RESET SWITCH There is a venting manual reset switch located on the venting hood.
  • Page 15 USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE GAS CARRYING COMPONENTS OF THIS APPLIANCE SHOULD BE INSPECTED FOR PROPER OPERATION PERIODICALLY BY A QUALIFIED SERVICE TECHNICIAN. MAIN BURNER Check main burner every 12 months for proper flame characteristics.

  • Page 16: Service And Repair

    Do not attempt to repair the water heater yourself. Any work performed by unauthorized personnel may void the warranty. If you are having a problem with your A.O. Smith water heater and are not pleased with the service you received: •...

  • Page 17: Troubleshooting

    WARNING: DO NOT BY-PASS ANY CONTROLS TO MAKE HEATER OPERATE. Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first. LED STATUS An open earth ground circuit to the ignition system.
  • Page 18 Allow more time for heater to reheat. Have plumber check and repair leaks. Take unit out of service immediately, call an A.O. Smith service representative. Proper dilution air must be provided for combustion and dilution of flue temp. Refer to “INSTALLATION” section.

  • Page 19: Limited Residential Gas Warranty

    TABLE 1 WARRANTY PERIOD MODELS TANK GPDH / GPDT / GPDX 6 YEARS When the water heater has been used for other than single family residential application: 1. The tank warranty shall be reduced to 3 years for 10 year models, and 1 year for 6 year models. 2. The parts warranty shall be reduced to one year for all models.
  • Page 20 125 SOUTHEAST PARKWAY • FRANKLIN, TN 37068 Phone: 1-800-433-2545 • Fax: 1-800-433-2515 www.aosmithwaterheaters.com / email: parts @hotwater.com...

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GpdtGpdx

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