Empire Comfort Systems VFP32FP(20,21)L - Manual (Page 19)

Page 19 20101-2-0806
Figures 13 and 15 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 14 and 16 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.
VFP(32,36)FP(30,31) PILOT
Correct Pilot Flame Pattern
Figure 13
Incorrect Pilot Flame Pattern
Figure 14
If pilot flame pattern is incorrect, as shown in Figure 14
• See Troubleshooting, page 21.
VFP(32,36)FP(20,21) PILOT
Correct Pilot Flame Pattern
Figure 15
Incorrect Pilot Flame Pattern
Figure 16
If pilot flame pattern is incorrect, as shown in Figure 16
• See Troubleshooting, page 21.
PILOT FLAME CHARACTERISTICS