Maintenance And Cleaning; Consumer Safety Information - A.O. Smith GAS WATER HEATER User Manual

Maintenance and Cleaning

Repairs and maintenance should be performed by an A. O. Smith service technician. Verify
proper operation after servicing.
It is imperative that control compartments, burners and circulating air passage ways of the
water heater be kept clean.
1. Turn off and disconnect electrical power.
2. Remove and clean the water inlet filter.
3. Use pressurized air to remove dust from the main burner, heat exchanger, and fan
blades. Do not use a wet cloth or spray cleaners on the burner. Do not use volatile
substances such as benzene and thinners. They may ignite or fade the paint.
4. Use soft dry cloth to wipe outer cover of tankless gas.
Vent System
The vent system should be inspected at least annually for blockages or damage.
Motors
Motors are permanently lubricated and do not need periodic lubrication. Keep fan and motor
free of dust and dirt by cleaning annually.
Snow Accumulation
• Keep the area around flue terminal free of snow and ice. The water heater will not
function properly if the intake air or exhaust is impeded (blocked or partially blocked) by
obstructions.
• The burner must flame evenly over the entire surface when operating correctly. The flame
must burn with a clear, blue, stable flame. See the parts breakdown of the burner for the
location of the view ports.

Consumer Safety Information

Warning
• Keep the area around the water heater clear and free from combustible materials,
petrol, diesel, kerosene, and other flammable vapors and liquids.
• Do not use this water heater if any part has been under water.
• Always check the water temperature before entering a shower or bath.
Safety Features
• Overheat
• Flame Failure : The water heater will automatically shut down if the burner flame is
• Power Failure : The water heater will cut off the gas if it loses electrical power.
: The water heater will automatically shut down when the water heater
exceeds a predetermined temperature.
extinguished.
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