A.O. Smith GPDH, GPDX, GPDT owner manual Service and Repair, Thermostat and GAS Supply Check

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A hydrogen sulfide (rotten egg) odor may result if water contains high sulfate and/or minerals. Chlorinating the water supply should minimize the problem, see EXTENDED NON-USE PERIODS.

NOTE: Anode rod must remain installed (except for inspection) to avoid shortening tank life. See LIMITED WARRANTY. Replace as necessary.

SERVICE AND REPAIR

The A.O. Smith water heater requires no special care other than the normal maintenance as noted above. If you are having a problem with your water heater, before calling for service please refer to the following TROUBLESHOOTING sections. If service becomes necessary, contact your dealer, installer or an authorized service agent. 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:

•First, please contact your dealer or the A.O. Smith authorized service agent in your area and explain to them why you are not satisfied. This will usually correct the problem.

•If after working with your dealer or service agent the problem has not been resolved to your satisfaction, please let us know by either writing to us at:

A.O. Smith Water Products Company

Service Department

106 Adkisson St.

Ashland City, TN 37015

or, going to our website at: www.aosmithwaterheaters.com

Please click on: "Mail"

then click on: "Service" and leave us a message.

Please be sure to provide the following information when writing or e-mailing:

•Model Number

•Serial Number

•Date of Original Purchase

•Date Problem Originated

•Explanation of Problem

Also, please be sure to include a daytime telephone number.

TROUBLE SHOOTING HELP

THERMOSTAT AND GAS SUPPLY CHECK

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is gas being supplied to the thermostat?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn "ON" gas supply.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

Yes

Call gas company to

No

increase gas pressure.

GO TO TROUBLE SHOOTING

SECTION, PAGE 17.

Is thermostat calling for heat? Run (hot) water from heater and set adjustment button higher. Check using a manometer at thermostat pressure tap.

Yes

Is there a minimum gas pressure 4" (1kPa) W.C. for natural gas or 10" (2.5 kPa) W.C. for propane (L.P.) gas?

Yes

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Contents Residential With HOT Surface Ignition Replacement Parts and Deliming ProductsGAS Model External Damage Chemical Vapor CorrosionExtended NON-USE Periods Insulation BlanketsWater Connections Location of HeaterWater Potable Heating Space Heating GAS Connections Closed Water SystemVenting Combustion AIR and Exhaust Venting Through an Outside Wall ClearancesVenting Through AN Outside Wall Wire FenceVenting Through Roof Clearances Vent piping can be installed as follows Venting System Example Installation For ALL ModelsDIA. Vents Number of 90 DEG Approximate Setting Time for 2-1/2 to 4 Pipe Joints Vent Pipe SeparationCementing PVC, ABS or Cpvc Pipe and Fittings Movement Complete Joint SETWiring Connecting Vent to BlowerVenting Through a Roof ElbowsOptional Field Installed Wiring What to do if YOU Smell GAS Do not TRY to Light the Burner by HandTemperature Regulation FillingHigh Altitude Installation Venting Manual Reset SwitchWater Heating Ignition Sequence Control Sequence HOT Surface Direct IgnitionHigh Temperature Limit Switch Power Venter MaintenanceMain Burner Venting SystemService and Repair Thermostat and GAS Supply CheckTrouble Shooting Water Heater Control LED Status Problem SolutionHOT Water Vent Pipe TOO HOTYellow Flame CondensationLimited Residential GAS Warranty Southeast Parkway FRANKLIN, TN

GPDT, GPDH, GPDX specifications

A.O. Smith is a renowned leader in the manufacturing of water heating solutions, and its series of gas water heaters, including the GPDT, GPDH, and GPDX models, are emblematic of the company’s commitment to innovation, efficiency, and reliability.

The A.O. Smith GPDT series is characterized by its high energy efficiency and robust design. With a 40-gallon capacity, it utilizes a 0.67 energy factor, making it an ideal choice for both residential and light commercial applications. This model features a unique combustion system that minimizes emissions while maximizing hot water output. Equipped with a powered draft system, the GPDT series effectively vents combustion gases, improving air quality and lowering operational costs.

In contrast, the GPDH series is particularly notable for its compatibility with high-efficiency gas appliances. It employs a direct vent system, allowing for versatile installation options. The GPDH models also include advanced diagnostics and a LED display that simplifies monitoring and maintenance. With an enhanced insulation design, these heaters minimize heat loss, effectively optimizing performance and energy savings.

The GPDX series capitalizes on cutting-edge technologies to provide superior performance. With capacities ranging from 30 to 50 gallons, these water heaters are designed to meet varying needs. The GPDX is equipped with a dual-purpose valve that offers superior temperature control and safety features, ensuring user convenience and peace of mind. Its intuitive interface allows users to easily set their desired water temperature and monitor performance metrics.

One of the key characteristics that unify the GPDT, GPDH, and GPDX models is their commitment to durability. A.O. Smith incorporates high-quality materials and innovative engineering processes to enhance the longevity of their products. Each model features an impressive warranty, demonstrating the company’s confidence in their craftsmanship.

In conclusion, A.O. Smith's GPDT, GPDH, and GPDX gas water heater series offer a blend of efficiency, performance, and innovation. These models are equipped with advanced technologies designed to provide users with reliable hot water solutions while minimizing energy consumption. With their robust build, user-friendly features, and impressive warranties, A.O. Smith continues to be a top choice for those seeking dependable gas water heating solutions.
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