Pilot Flame Characteristics - Empire Comfort Systems VFP20IN30L10N-1 Installation Instructions And Owner's Manual

Figures 22 and 24 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 23 and 25 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.
MILLIVOLT pILOT
THERMOPILE
THERMOCOUPLE
(LPG)
Correct pilot Flame pattern
THERMOPILE
THERMOCOUPLE
(LPG)
Incorrect pilot Flame pattern
If pilot flame pattern is incorrect, as shown in Figure 23
• See Troubleshooting, page 28.
26497-1-0310

PILOT FLAME CHARACTERISTICS

PILOT
THERMOCOUPLE
(NATURAL)
Figure 22
PILOT
THERMOCOUPLE
(NATURAL)
Figure 23
HyDRAULIC THERMOSTAT pILOT
Correct pilot Flame pattern
Incorrect pilot Flame pattern
If pilot flame pattern is incorrect, as shown in Figure 25
• See Troubleshooting, page 28.
Figure 24
Figure 25
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