Weil-McLain CGI-4E Boiler User Manual


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Part Number 550-110-711/1108
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CGi-4E Gas-Fired Water Boiler — Boiler Manual
Figure 29 Typical main burner flame
Check burner flames
Viewpilotandmainamesthroughtheinspectionport
in the base burner shield.
Pilot burner flame (Figure 28)
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
engulfing pilot flame sensor.
3. Lackofprimaryair—Yellowame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refor
the first 60 seconds.)
IMPROPER main burner flame characteristics
1. Overfired — Large flames.
2. Underred—Smallames.
3. Lackofprimaryair—Yellowtippingon
flames (sooting will occur).
Figure 28 Typical pilot burner flame
Start-up — operate boiler (continued)7b
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