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PH Gas Logs
Flames from the pilot, front and rear burner should be
visually checked as soon as the heater is installed.
In addition, periodically check the fl ames visually during
operation.
CHECK THE PILOT FLAME
The pilot fl ame must always be present when the
heater is in operation. It should just touch the top of the
thermocouple tip for natural. Refer to Figures 28 and 30
for correct pilot fl ame appearance.
MILLIVOLT CONTROL
Thermocouple
for Natural Gas
Thermocouple
for LP
Figure 28 -
Correct Pilot Flame Appearance
Thermocouple
for Natural Gas
Thermocouple
for LP
Figure 29 -
Incorrect Pilot Flame Appearance
22
If the pilot fl ame does not touch the thermocouple, then
the main burner cannot function reliably. Refer to Figures
29 and 31 for incorrect pilot fl ame appearance.
MANUAL & HI/LO CONTROL
Thermocouple
for Natural Gas
FP2272
Figure 30 -
Correct Pilot Flame Appearance
Thermocouple
for Natural Gas
FP2273
Figure 31 -
Incorrect Pilot Flame Appearance
FLAME APPEARANCE
Thermocouple
for LP
Thermocouple
for LP
FP2502
65D2035
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