Weil-McLain GOLD CGS-4E - Manual (Page 29)

Part number 550-110-282/1108
29
GOLD CGs-4E Gas-Fired Water Boiler — Boiler Manual
Start-up — operate boiler
(continued)
7b
Figure 16 Typical pilot burner flame
Figure 17 Typical main burner flame
Check burner flames
View pilot and main flames through the inspection port in the Air inlet
box front cover.
Pilot burner flame ( Figure 16 )
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 sen-
sor.
3. Lack of primary air — Yellow flame tip.
4. Incorrectly heated pilot flame sensor.
Main burner flame ( Figure 17 )
PROPER main burner flame characteristics
1. Yellow-orange streaks may appear (caused by dust).
(NOTE: The CGs-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).
If you discover evidence of any gas leak, shut down the
boiler at once. Find the leak source with bubble test and
repair immediately. Do not start boiler again until cor-
rected. Failure to comply could result in severe personal
injury, death or substantial property damage.