1 part no. 184707-001 gpdh/gpdt/gpdx gas models with hot surface ignition caution text printed or outlined in red contains information relative to your safety. Please read thoroughly before installing and using this appliance. Keep this manual in the pocket on heater for future reference whenever ma...
2 get to know your water heater replacement parts and deliming products a vent pipe-exhaust b anode c hot water outlet d outlet (115 v. Ac) e flue baffle f gas supply g main manual gas shut off valve h ground joint union j dirt leg k outer door l union m inlet water shut off valve n cold water inlet...
3 general safety information external damage do not operate the water heater until it has been fully checked out by a qualified technician, if the water heater: • has been exposed to fire or damage. • displays evidence of sooting. • produces steam or unusually hot water. If the water heater has been...
4 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...
5 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 ...
6 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...
7 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...
8 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. 1. The water heater requires its own (separate) venting system. 2. 3" pvc, abs or cpvc schedule 40 piping and fittings are acceptable materials for ...
9 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...
10 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 wat...
11 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. A standard 1/2" conduit...
12 for your safety read before operating warning: if you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the b...
13 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 1. Close the heater drain valve b...
14 water heating ignition sequence (make sure gas and electric power are connected properly) 1. The ignition control module is powered and monitors the system, waiting for a call for heat from the thermostat. 2. The thermostat calls for heat by reading a resistance value within a given range directl...
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 charact...
16 trouble shooting help thermostat and gas supply check 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 inspecti...
17 trouble shooting 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. Problem solution an open earth ground circuit to the 1. Check that the earth ground connection is ig...
18 trouble shooting (continued) problem cause solution 1) blower will not run. A) “on/off” control switch turned off. Turn switch to the “on” position. B) blower unplugged. Plug blower back into 115 vac. Outlet. C) no power at outlet. Repair service to outlet. D) thermostat defective. Replace thermo...
19 this warranty is applicable to the original owner only. If the glass lined tank in this water heater shall prove upon examination by a. O. Smith corporation (the warrantor) to have leaked during the warranty period in normal residential use, due to natural corrosion from potable water therein, th...
20 125 southeast parkway • franklin, tn 37068 phone: 1-800-433-2545 • fax: 1-800-433-2515 www.Aosmithwaterheaters.Com / email: parts @hotwater.Com.
