Filter
Top Products
Part Number 550-110-710/0107
35
GOLD CGi Gas-Fired Water Boiler — Boiler Manual
Figure 29 Typical main burner flame
Check burner flames
View pilot and main flames through the inspection port
in the base burner shield.
Pilot burner flame (Figure 28)
PROPER pilot flame characteristics
1. Blue flame.
2. Inner cone engulfing pilot flame sensor.
3. Pilot flame sensor glowing cherry red.
IMPROPER pilot flame characteristics
1. Overfired — Large flame lifting or blowing
past pilot flame sensor.
2. Underfired — Small flame. Inner cone not
engulfing pilot flame sensor.
3. Lack of primary air — Yellow flame tip.
4. Incorrectly heated pilot flame sensor.
Main burner flame (Figure 29)
PROPER main burner flame characteristics
1. Yellow-orange streaks may appear (caused by
dust).
IMPROPER main burner flame characteristics
1. Overfired — Large flames.
2. Underfired — Small flames.
3. Lack of primary air — Yellow tipping on
flames (sooting will occur).
Figure 28 Typical pilot burner flame
Start-up — operate boiler (continued)7b
Start-up — if boiler doesn’t start . . .7c
4. Gas not turned on at meter or boiler?
5. Incoming gas pressure less than:
5” w.c. for natural gas? 11” w.c. for propane gas?
6. If none of the above corrects the problem, refer to
Troubleshoot-
ing, section 11 of this manual.
1. Loose connections, blown fuse or
service switch off?
2. High limit switch set below boiler
water temperature?
3. Thermostat set below room tempera
-
ture?
Check for: