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Gas Control/Thermostat Inspection
Once a year, visually inspect the gas control/thermostat
cover, gas control knob and status light for any physical
damage. Check for any loose connections or frayed
wires as well.
Pilot Light and Burner Inspection
Once a year, visually inspect the pilot light, then the
main burner while in operation. Through the sight
glass, confirm that both flames are blue and exhibit the
pattern shown in the illustrations below. If a different
flame pattern or color is noted or soot has built up on
the burner, turn off the water heater and call a qualified
service technician.
Low NOx Burner
Normal
burner flame
pattern
Normal pilot
light flame
Thermopile
Water and Gas Systems
Once a year, visually inspect the water pipes and
connections, repairing any leaks or damaged fittings.
If you smell gas, refer to Lighting and Shutdown, page 7.
Check the water heater's venting system:
1. Visually inspect the vent hood and vent pipes to
ensure they are firmly attached.
49-6000245 Rev. 3
If damage to any of these components is detected, call
a service technician to repair or replace the gas control/
thermostat.
CAUTION
The pilot light and main burner are in
a sealed chamber. Only a qualified service technician
should access this chamber. Refer to Sealed Burner
Assembly Warning, page 4.
Ultra-Low NOx Burner
Thermopile
connection
Door
Thermistor
The Ultra-Low NOx burner surface will initially have
a short blue flame, which will heat up the burner
and change its radiant surface bright orange (after
~30 minutes of operation). If a large flame pattern or
different flame color is observed, turn off the water
heater and call a qualified service technician.
2. Visually check for soot or any physical deterioration of
the venting system. If corrosion or soot are detected,
call the local gas utility to address the problem and
replace the venting system before placing the water
heater back in operation. (Not covered under the
product warranty.)
Door
Thermistor
Resettable
Thermal Switch
13
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