Start-Up - Weil-McLain GOLD CGt Manual

GOLD CGt Gas-Fired Water Boiler — Boiler Manual
7b
Start-up — operate boiler
Check burner flames
View pilot and main flames through the inspection port
in the base burner shield.
Pilot burner flame
pilot flame characteristics (see
Proper
1. Blue flame.
2. Inner cone engulfing pilot flame sensor.
3. Pilot flame sensor glowing cherry red.
Improper
1. Overfired — Large flame lifting or blowing
past 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.
Main burner flame
main burner flame characteristics (see
Proper
):
27
1. Yellow-orange streaks may appear (caused by
dust).
Improper
1. Overfired — Large flames.
2. Underfired — Small flames.
3. Lack of primary air — Yellow tipping on
flames (sooting will occur).
7c
Start-up — if boiler doesn't start . . .
Check for:
1. Loose connections, blown fuse or service switch
off?
2. High limit switch set below boiler water
temperature?
3. Thermostat set below room temperature?
4. Gas not turned on at meter or boiler?
32
pilot flame characteristics:
main burner flame characteristics:
Figure 26 Typical pilot burner flame
Spark
electrode
):
Figure 26
Pilot
flame
sensor
Figure
Figure 27 Typical main burner flame
5. Incoming gas pressure less than 5" w.c. for natural
gas?
If none of the above corrects the problem, refer to
Troubleshooting
Note: If the boiler water temperature is below tankless
heater low limit setting, boiler can be started even if
thermostat is set above room temperature.
(continued)
Transparent
blue flame
Inner flame
, section , pages 43-55 of this manual.
11
Part Number 550-110-290/0501
Inner
cone
071030
071031