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RESIDENTIAL GAS AND ELECTRIC WATER HEATER
SERVICE HANDBOOK
A.O. Smith Water Products Company Training Department
©2002 Ashland City, Tennessee
14
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
Installed in accordance with local codes.
TEMPERATURE/PRESSURE RELIEF VALVES