A.O. Smith Residential Power Vent Gas Water Heaters with Hot Surface Ignition - Manuals

NOTE: To protect against untimely corrosion of hot and cold water fittings, it is strongly recommended that di-electric unions or couplings be installed on this water heater when connected to copper pipe. Typical Installation 6 *COLD (RETURN) RECIRCULAT- ING LOOP CONNECTION MUST BE INSTALLED ONLY IN...

7 Locating the New Water Heater 6. The location selection must provide adequate clear- ances for servicing and proper operation of the water heater. 5. The water heater comes equipped with a 7 foot power cord which can be used to connect to a 110/120 volt power source if (1) local codes allow, and (...

Combustion Air and Ventilation When determining the installation location for a power vent water heater, snow accumulation and drifting should be considered in areas where applicable. Venting Through an Outside Wall – Clearances • 0 ″ clearance for 3 ″ (or optional 2 ″ and 4 ″ ) PVC, ABS, or CPVC Sc...

Installing the New Water Heater SHUTOFF VALVE COLD INLET WATER LINE HOT OUTLET TO HOUSE TEMPERATURE- PRESSURE RELIEF VALVE DISCHARGE PIPE (Do not cap or plug) PROVIDE A 6 ″ AIR GAP BETWEEN THE END OF THE DISCHARGE PIPE AND DRAIN VENT TO OUTDOORS GAS SUPPLY Water Piping This water heater shall not be...

Temperature-Pressure Relief Valve Installing the New Water Heater (cont’d) TEMPERATURE-PRESSURE RELIEF VALVE DISCHARGE PIPE (Do not cap or plug) PROVIDE A 6 ″ AIR GAP BETWEEN THE END OF THE DISCHARGE PIPE AND DRAIN 12 COLD HOT WARNING At the time of manufacture this water heater was provided with a ...

Installing the New Water Heater (cont’d) 13 Filling the Water Heater To fill the water heater with water:1. Close the water heater drain valve by turning the han- dle to the right (clockwise). The drain valve is on the lower front of the water heater. 2. Open the cold water supply valve to the water...

Installing the New Water Heater (cont’d) 15 3 ″ PVC, ABS OR CPVC SCHEDULE 40 90° STREET ELBOW 3 ″ PVC, ABS OR CPVC SCHEDULE 40 PIPE VENT CAP WITH SCREEN 3 1 ⁄ 2 ' STRAPPING Horizontal runs must be securely supported at 3 1 ⁄ 2 foot intervals and vertical runs supported at 5 foot intervals. VENTING T...

Gas Piping 22 Installing the New Water Heater (cont’d) WARNING Make sure the gas supplied is the same type listed on the model rating plate. The inlet gas pressure must not exceed 10.5 in. water column (2.6kPa) for natural gas or 13 in. water column (3.2kPa) for propane (L.P.) gas. The mini- mum inl...

Installation Checklist BEFORE OPERATING THE HEATER: 1. Check the gas line for leaks. a. Use a soapy water solution. DO NOT test for gas leaks using a match or open flame. b. Brush the soapy water solution on all gas pipes, joints and fittings. c. Check for bubbling soap. This means you have a leak. ...

Operating This water heater is equipped with an electrically operated venting system and electronic control. For the burner to come on, the water heater thermostat must call for heat. Then the system will begin sequencing, each section prov- ing itself before gas is allowed to flow to the burner. BE...

Operating (cont’d) 27 5. This appliance is equipped with a device which auto- matically lights the burner. DO NOT TRY TO LIGHT THE BURNER BY HAND. 6. Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow “ B ” in the safety information above on this label. If you don ’ t sm...

Temperature Regulation 28 Due to the nature of the typical gas water heater, the water temperature in certain situations may vary up to 30°F high- er or lower at the point of use such as, bathtubs, showers, sink, etc. Any water heaters intended purpose is to heat water. Hot water is needed for clean...

Start Up Conditions CONDENSATION Whenever the water heater is filled with cold water, a cer- tain amount of condensation will form while the burner is on. A water heater may appear to be leaking when in fact the water is condensing. This usually happens when: a. When a new water heater is filled wit...

Periodic Maintenance 31 Venting System Inspection At least once a year a visual inspection should be made of the venting system. You should look for: 1. Obstructions which could cause improper venting. The combustion and ventilation air flow must not be obstructed. 2. Damage or deterioration which c...

Periodic Maintenance (cont’d) 32 Failure to install and maintain a new properly listed tem- perature-pressure relief valve will release the manufacturer from any claim which might result from excessive tempera- ture or pressure. Temperature-Pressure Relief Valve Operation The temperature-pressure re...

Use this guide to check a “Leaking” water heater. Many sus- pected “Leakers” are not leaking tanks. Often the source of the water can be found and corrected. If you are not thoroughly familiar with gas codes your water heater, and safety practices, contact the gas utility to check the water heater. ...

35 Troubleshooting WARNING This troubleshooting guide has been supplied for use by qualified service personnel who have a complete under- standing of both electricity and gas. WARNING Label all wiring before disconnecting any wiring; to ensure correct reconnection. Failure to follow this instruction...

38 Repair Parts 1 2 3 4 5 7 8 9 10 11 21 12 14 13 15 17 16 23 22 20 24 25 26 27 28 29 30 18 19 6 PVC, ABS or CPVC items for all models supplied locally or OR 8 9 Blower/Draft Hood Assembly for 40,000 Btu/Hr Models Only