Flame Appearance - Monessen Hearth MJ27NR Installation And Operating Instructions Manual

FLAME APPEARANCE

Flames from the pilot and burner should be visually checked as soon as the heater
is installed. In addition, periodically check the flames visually during operation.
ChECkING ThE PILOT FLAME
The pilot flame must always be present when the heater is in operation. It should just
touch the top of the thermocouple tip for natural. Figure 31 for correct pilot flame.
If the pilot flame does not touch the thermocouple, then the main burner cannot function
reliably. Refer to Figure 32 for incorrect shape of pilot flame.
Thermocouple
for Natural
Thermocouple
for LP
Figure 31 - Correct Appearance of Pilot Flame
28
FP2014
FP2014
pilot flame correct
Thermocouple
for Natural
Thermocouple
for LP
Figure 32 - Incorrect Appearance of Pilot Flame
FP2015
FP2015
pilot flame wrong
86D0024