Check Burner Flames - Weil-McLain CG Series Manual

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Check pilot burner flame:
1. Proper pilot flame .
a) Blue flame.
b) Inner cone engulfing pilot flame sensor.
c) Pilot flame sensor glows cherry red.
2. Improper pilot flame
a) Overfired - flame is large and lifting or blowing past
pilot flame sensor.
b) Underfired - flame small; pilot flame sensor not en¬
gulfed by inner cone.
c) Lack of primary air - flame tip yellow.
d) Pilot flame sensor not heated properly.
INSPECT VENTING SYSTEM
1. Check venting system atleastoncea month during heating
season. With boiler firing, hold candle or match below
lower edge of draft hood "skirt". If flame does not blow out,
but burns undisturbed, vent system is functioning prop¬
erly. If flame blows out or flickers drastically, vent system
must be checked for obstructions or other causes of im¬
proper venting.
2. Inspect all parts of venting systems for deterioration from
corrosion, physical damage, sagging, etc. Correct all con¬
ditions found.
3. Verify damper is open when burner ignites. For additional
information, see Control Supplement.
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TYPICAL PILOT BURNER FLAME
FIGURE 11
CHECK BURNER FLAMES
1. Proper burner flame, see Figure 12. Yellow-orange streaks
may appear - caused by dust.
2. Improper flame:
a) Overfired - Flames large.
b) Underfired - Flames small.
c) Lack of primary air - Yellow tipping on flames; sooting
will occur.
TYPICAL MAIN BURNER FLAME
FIGURE 12
12