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RESIDENTIAL GAS AND ELECTRIC WATER HEATER
SERVICE HANDBOOK
Residential Gas – continued
Condensation is a mild acid – it will corrode steel
Condensation
is usually noted when:
water dripping is heard (only) while the main burner is on,
there is “water” around the heater just after the heater has been operating,
there are small, black or red granules on the main burner or top of the heater or
corroded jacket or vent piping is noted.
If … … then
any of the above conditions exist raise the supply air temperature or
increase stored water temperature or
increase the size of the tank
You would not wish to lower combustion
efficiency – this would waste gas. Use
materials (stainless steel, PVC etc.) that
will not be affected by the condensation
Suggested Multiple Heater Water Piping Required For
Proper Operation of Top Connect Models
TEMPERATURE/PRESSURE RELIEF VALVES
Installed in accordance with local codes.
A.O. Smith Water Products Company Technical Training Department
©2005 Ashland City, TN
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