Weil-McLain GOLD CGI-4E - Manual (Page 35)

Part Number 550-110-711/1108
35
GOLD CGi-4E 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).
(NOTE: The CGi-4E will operate at low fire for
the first 60 seconds.)
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