Pilot Flame Characteristics - Empire Comfort Systems VFLL38FP30LN-1 Installation Instructions And Owner's Manual

Figures 27 and 29 show a correct pilot flame pattern. The correct
flame will be blue and will extend beyond the thermocouple. The
flame will surround the thermocouple just below the tip. A slight
yellow flame may occur where the pilot flame and main burner
flame meet. Figures 28 and 30 show an incorrect pilot flame pattern.
The incorrect pilot flame is not touching the thermocouple. This will
cause the thermocouple to cool. When the thermocouple cools, the
heater will shut down.
THERMOPILE
THERMOCOUPLE
(LPG)
Correct Pilot Flame Pattern for MILLIVOLT
THERMOPILE
THERMOCOUPLE
(LPG)
Incorrect Pilot Flame Pattern for MILLIVOLT
If pilot flame pattern is incorrect, as shown in Figure 28
• See Millivolt Troubleshooting, page 27.
Page 20

pILOT FLAME CHARACTERISTICS

PILOT
THERMOCOUPLE
(NATURAL)
Figure 27
PILOT
THERMOCOUPLE
(NATURAL)
Figure 28
SENSOR
Correct Pilot Flame Pattern for IP
SENSOR
Incorrect Pilot Flame Pattern for IP
If pilot flame pattern is incorrect, as shown in Figure 30.
• See IP Troubleshooting, pages 36 - 38.
IGNITOR
PILOT
Figure 29
IGNITOR
PILOT
Figure 30
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