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31
Housekeeping
Visually inspect the hot surface
ignitor.
To ensure sufficient ventilation
and combustion air supply, proper
clearances must be maintained.
When installed in a closet, DO NOT
block or obstruct any of the combustion
air inlet openings located around the
perimeter of the water heater. A minimum
of 1 in. is required between these
combustion air inlet openings and any
obstruction.
DO NOT obstruct or block the
Flammable Vapor Sensor. The sensor
does not require any maintenance
or cleaning. DO NOT expose to
cleaning agents.
!
DANGER: Keep
appliance area clear and
free from combustible
materials, gasoline and
other flammable vapors
and liquids.
Burner Inspection
Visually inspect the hot surface
ignitor and main burners periodically.
Through the sight glass, inspect the
hot surface ignitor with the main
burner off and inspect the main
burner while firing.
If any unusual burner operation is
noted, the water heater should be shut
off until qualified service assistance
can be obtained.
!
CAUTION: For your safety,
cleaning of the burner must be
performed only by qualified service
personnel, as it involves the
disconnection of gas piping and
leak testing. The burner chamber is
a sealed area. If the burner access
door is removed, the burner access
door gasket must be replaced.
For cleaning, remove the burner
from the water heater. A vacuum
cleaner can be used on the burner and
floor shield inside the water heater.
The burner can also be cleaned by
scrubbing with mild detergent.
Venting System Inspection
Periodically inspect the vent system.
Make certain that all joints are secure
and the vent system supports are all
in place,
Check the vent system terminal to see
that it is free from obstructions and
there is no damage nearby caused by
condensate.
Inspect dilution air holes. Make
certain no blockage exists. Clean any
lint, dirt or oil accumulation that may
exist.
Test for spillage at the dilution air
holes after 5 minutes of burner
operation. Place a blown out match or
candle close to the dilution air holes.
The smoke from the candle or match
should be drawn into the dilution air
holes. If the smoke is pushed away
from the dilution air holes, the blower
or vent system may be blocked.
Contact qualified service personnel.
Periodically clean the screens in the
vent terminal (if applicable).
In applicable climates, periodically
inspect the vent and air-inlet
terminals to ensure they are not
blocked by snow.
Blower Assembly Dilution Air Holes
Location of Dilution Air Holes
Proper burner flame pattern
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