Weil-McLain CGS-4E Boiler User Manual


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Part number 550-110-282/1108
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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amesthroughtheinspectionportintheAirinlet
box front cover.
Pilot burner flame (Figure 16)
PROPER pilot flame characteristics
1. Blueame.
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. Underred—Smallame.Innerconenotengulngpilotamesen-
sor.
3. Lackofprimaryair—Yellowame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refortherst60seconds.)
IMPROPER main burner flame characteristics
1. Overfired — Large flames.
2. Underred—Smallames.
3. Lackofprimaryair—Yellowtippingonames(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.
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