Millivolt Pilot Flame Characteristics - Empire Comfort Systems VFPC20in33N-1 Installation Instructions And Owner's Manual

MILLIVOLT PILOT FLAME CHARACTERISTICS

Figures 26 and 28 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 27 and 29 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
THERMOPILE
THERMOCOUPLE
THERMOCOUPLE
(PROPANE)
(LPG)
Correct Pilot Flame Pattern
THERMOPILE
THERMOPILE
THERMOCOUPLE
THERMOCOUPLE
(PROPANE)
(LPG)
Incorrect Pilot Flame Pattern
If pilot flame pattern is incorrect as shown in Figure 27, see
Troubleshooting.
39236-1-0219
PILOT
PILOT
THERMOCOUPLE
THERMOCOUPLE
(NATURAL)
(NATURAL)
Figure 26
PILOT
PILOT
THERMOCOUPLE
THERMOCOUPLE
(NATURAL)
(NATURAL)
Figure 27
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