58D6002 19
Flames from the pilot, front and rear burner should be visually checked as soon as the heater is installed.
Inaddition,periodicallychecktheamesvisuallyduringoperation.

CHECkING PILOT FLAME

The pilot flame must always be present when the heater is in operation. It should just touch the top of the ther-
mocouple tip for natural. See Figure 17 forcorrectpilotame.
Ifthepilotame doesnottouch thethermocouple,then theburnerscannot functionreliably.See Figure 18 for incorrect
shapeofpilotame.
MILLI-VOLT CONTROL
Figure 17 - Correct Appearance of Pilot Flame Figure 18 - Incorrect Appearance of Pilot Flame
Thermocouple
for Natural
Thermocouple
for LP Thermocouple
for LP
Thermocouple
for Natural
FLAME APPEARANCE