PILOT FLAME CHARACTERISTICS
Figures 21 and 22 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 24 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 | PILOT | |
(VFDR ONLY) | ||
|
THERMOPILE | PILOT | |
(VFDR ONLY) | ||
|
THERMOCOUPLE | THERMOCOUPLE |
(LPG) | (NATURAL) |
Incorrect Pilot Flame Pattern for VFDR
Figure 23
THERMOCOUPLE THERMOCOUPLE
(LPG)(NATURAL)
Correct Pilot Flame Pattern for VFDR
Figure 21
Incorrect Flame Pattern for VFDT & VFDM
Figure 24
If pilot flame pattern is incorrect, as shown in Figures 23 and 24
•See Troubleshooting, page 23.
Correct Pilot Flame Pattern for VFDT & VFDM
Figure 22
Page 21 |
