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RESIDENTIAL GAS AND ELECTRIC WATER HEATER
SERVICE HANDBOOK
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.
Construction: See also “General” section of this
manual.
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.
(delta)
Note: The word “Hot”
may or may not be
present on the control
knob
A.O. Smith Water Products Company Technical Training Department
©2005 Ashland City, TN
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