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Along with adequate make-up air, the quality of the air is important. Contaminants in
combustion air can lead to premature heater failure.
waxes, salts, etc. are drawn into the combustion chamber with the make-up air and, once
fired, mix with water vapor in the gases to form extremely corrosive hydrochloric or
hydrofluoric acid and other corrosive byproducts.
Flammable items, pressurized containers or any other potentially hazardous articles must
never be placed on or adjacent to the heater. Open containers of flammable material
should not be stored or used in the same room with the heater.
Technical Training Department
Ashland City, TN ©2003
SBD TANK TYPE HEATERS
SERVICE HANDBOOK
CONTAMINATED AIR
AIR FOR COMBUSTION
Flammable Items
9
Vapors from bleaches, soaps,
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