Flame Appearance; Pilot Flame Appearance - Monessen Hearth EYF18-R Installation And Operating Instructions Manual

EYF Series Unvented Gas Log Set
Flames from the pilot, front and rear burner should be
visually checked as soon as the heater is installed.
In addition, periodically check the flames visually during
operation.
MILLIVOLT CONTROL
Thermocouple
for Natural Gas
Thermocouple
for LP
Correct Pilot Flame Appearance
Figure 29 -
Millivolt Control Pilot Flame Appearance
MANUAL & HI/LO CONTROL
Thermocouple
for Natural Gas
Correct Pilot Flame Appearance
Figure 30 -
Manual & Hi/Lo Control Pilot Flame Appearance
18 Monessen • EYF18/24 Gas Log Heater Installation/Owner's Manual • 65D1009 • Rev G • 01/2020
FP2272
FP2272
pilot correct flame
Thermocouple
for Natural Gas
Thermocouple
for LP
CHECK 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. Refer to Figures 29 & 30 for
correct pilot flame.
If the pilot flame does not touch the thermocouple, then
the main burner cannot function reliably. Refer to Figures
29 & 30 for incorrect shape of pilot flame.
Thermocouple
for Natural Gas
Thermocouple
for LP
Incorrect Pilot Flame Appearance
Incorrect Pilot Flame Appearance
FP2501
manual pilot flame

FLAME APPEARANCE

FP2273
FP2273
pilot bad flame
Thermocouple
for LP
FP2502