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RESIDENTIAL GAS, NON POWER VENTED, WATER HEATER 
SERVICE HANDBOOK 
 
State Water Heater 
 
Technical Training Department 
© 2004 
 
Ashland city, TN 
6
RESIDENTAL GAS WATER HEATER SERVICE 
 
This portion of this manual applies to the Operations and Servicing of Residential Gas, Tank 
Type, Water Heaters, which are vented atmospherically and use a thermocouple as their 
electrical source.  
 
 
 
 
 
 
Contro
l: There is one control on this style of water heater.  The control has a main gas 
regulator, pilot gas regulator, on-off-pilot knob, controls water temperature, has a temperature 
adjustment knob, and a high water temperature limit safety. 
 
σ(delta) 
Note:  The word “Hot” 
may or may not be 
present on the control 
knob