1 instruction manual printed in the u.S.A 1203 part no. 184639-000 keep this manual in the pocket on heater for future reference when ever maintenance adjustment or service is required. All technical and warranty questions: should be directed to the local dealer from whom the water heater was purcha...
2 safe installation, use and service your safety and the safety of others is extremely important in the installation, use and servicing of this water heater. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a poten...
3 general safety safe installation, use and service .............................. 2 general safety .................................................................. 3 table of contents .............................................................. 3 introduction ......................................
4 thank you for purchasing this water heater. Properly installed and maintained, it should give you years of trouble free service. Abbreviations found in this instruction manual: • ansi - american national standards institute • asme - american society of mechanical engineers • gama - gas appliance m...
5 typical installation figure 1. Uprights compacts table tops install vacuum relief in cold water inlet line as required by local codes. Install suitable drain pans under heaters to prevent damage due to leakage. Refer to water heater location on page 8. Install thermal expansion tank or device if w...
6 wiring diagrams turn off the heater electrical supply before servicing any electrical components. Figure 2. A-9 240 volt “off peak” non-simultaneous operation bottom element on separate time clock or “off peak” meter c-2 two wire circuit for single element heaters equipped with high limit control ...
7 mixing valve usage figure 3. Water (potable) heating: all models are considered suitable for water (potable) heating only. Hotter water can scald: water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, and oth...
8 facts to consider about the location carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. Whether replacing an old water heater or putt...
9 the water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving point of the water heater’s temperature-pressure relief valve is reached, the valve will relieve the excess pressure. The temperature-pressure relief valve is not intende...
10 the discharge pipe: • shall not be smaller in size than the outlet pipe size of the valve, or have any reducing couplings or other restrictions. • shall not be plugged or blocked. • shall be of material listed for hot water distribution. • shall be installed so as to allow complete drainage of bo...
11 keeping the thermostat setting at 120°f will reduce the risk of scalds. Figure 7 shows the approximate time-to-burn relationship for normal adult skin. The thermostats on your water heater have a linear relationship between degrees of angular rotation and the corresponding change in temperature. ...
12 thermal expansion water supply systems may, because of such events as high line pressure, frequent cut-offs, the effects of water hammer among others, have installed devices such as pressure reducing valves, check valves, back flow preventers, etc. To control these types of problems. When these d...
13 the water heater should be drained if being shut down during freezing temperatures. Also periodic draining and cleaning of sediment from the tank may be necessary. 1. Turn electrical supply “off”. 2. Close the cold water inlet valve to the water heater. 3. Open a nearby hot water faucet and leave...
14 leakage checkpoints read this manual first. Then before checking the water heater make sure the electrical power supply has been turned “off” before checking the tank for leakage. *a. Condensation and dripping may be seen on pipes if the water temperature is low in humid weather or pipe connectio...
15 repair parts list drain pan 17 12 16 8 11 14 14 7 1 3 6 4 2 3 9 10 15 key no. Part description 1 upper heating element (if dual element unit) 2 lower heating element 3 element gasket 4 lower thermostat (if dual element unit) 5 upper thermostat w/eco (if dual element unit) 6 lower thermostat w/eco...
16 these guidelines should be utilized by a qualified service agent. Troubleshooting guidelines improperly sealed, hot or cold supply connection, relief valve or drain valve. Leakage from other appliances or water lines. Thermal expansion in closed water system. Improperly seated valve. High sulfate...
17 residential electric warranty this warranty is applicable to the original owner only. In accordance with the warranty terms and conditions specified below. A. O. Smith water heaters (the warrantor) will furnish the original owner, 1) a replacement a. O. Smith water heater of equivalent size and c...
18 without invalidating the remainder of the affected provision or the other provisions of this warranty. Service and labor responsibility under this limited warranty, the warrantor will provide only a replacement water heater or part thereof. The owner is responsible for all other costs. Such costs...
19 notes: ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ______________________________...
20 www.Aosmithwaterheaters.Com.
