Pilot Burner Flame; Main Burner Flame; Check Condensate Drain System (If Used) - Weil-McLain CGa Series User Manual

maintenance
Maintenance Procedures — MONTHLY, continued
1

Pilot Burner Flame

Proper pilot flame (Figure 7):
1 Blue flame.
2 Inner cone engulfing thermocouple or thermopile
(standing pilot) or pilot flame sensor (spark-
2
ignited pilot)
3 Thermocouple or thermopile, or pilot flame sensor
glowing cherry red
Improper pilot flame:
1 Overfired — Large flame lifting or blowing past
3
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.
4

Main Burner Flame

Proper main burner flame (Figure 8):
1 Yellow-orange streaks may appear (caused by
dust)
Improper main burner flame:
5
1 Overfired — Large flames.
2 Underfired — Small flames.
3 Lack of primary air — Yellow tipping on flames
(sooting will occur)

Check Condensate Drain System (if used)

6
While the boiler is running, check the discharge
end of the condensate drain tubing by holding your
fingers in front of the opening. If you notice flue
gas escaping, this indicates a dry condensate drain
trap. See the following steps to fill the trap. If the
condensate trap dries out on a regular basis, call
7
your qualified service technician to inspect the boiler
and condensate line and refill the condensate trap.
WARNING
!
The condensate trap must be filled with water
during all times of boiler operation to avoid flue
8
gas emission from the condensate drain line.
Failure to fill the trap could result in severe
personal injury or death.
20
cg , cg , eg, peg, & lgb user manual
a i
Figure 7 Pilot burner and flame, typical
Figure 8 Main burner flame, typical
Under some circumstances, a vent system may not
produce enough condensate to keep the trap full of liquid
If the trap is not full, small amounts of flue products can
be emitted into the boiler room through the condensate
drain line. Follow the procedure below to fill the trap.
1 Fill the condensate trap with fresh water by
pouring water into the removed trap
a Verify that the condensate assembly is
unobstructed by pouring until the water runs
out the end of the condensate drain line
b If the water does not run out, there is an
obstruction Proceed to the next step
2 To remove an obstruction, remove and flush the
trap and drain line
a Loosen any attachments to the supplied
flexible drain hose.
b Loosen the condensate trap inlet connection
c Remove and flush out the condensate trap and
drain line
d Reinstall the trap and drain line Tighten all
attachments
e Pour water into the port and ensure that water
runs out the end of the drain line
f If the water still does not run out, call your
qualified service technician to inspect the boiler
and clean or replace the condensate assembly
550-142-301/0123