Weil-McLain CGA25SPDN 6d Start-up- verify operation, Pilot burner flame &IGURE ,  LUE mAME

GOLD CGa Gas-Fired Water Boiler — Boiler Manual

6d Start-up — verify operation

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Check burner flames

Pilot burner flame (&IGURE )

PROPER pilot flame

 "LUE mAME

2.Inner cone engulfing thermocouple (standing pilot) or pilot flame sensor (spark-ignited pilot).

3.Thermocouple or pilot flame sensor glowing cherry red.

IMPROPER pilot flame

1.Overfired — Large flame lifting or blowing past pilot flame sensor.

2.Underfired — Small flame. Inner cone not engulfing pilot flame sensor.

 ,ACK OFKPRIMARY AIRR I9ELLOW mAMEATIP

4. Incorrectly heated pilot flame sensor.

Main burner flame (&IGURE )

PROPER main burner flame

&IGURE R Typical pilot burner flame

&IGURE R Typical main burner flame

 9ELLOWORANGE STREAKSE MAYA APPEAR CAUSEDU BY dust).

IMPROPER main burner flame:

1.Overfired — Large flames.

2.Underfired — Small flames.

 ,ACK OF PRIMARYMAIRI ˆ 9ELLOW TIPPINGPON mAMESM (sooting will occur).

Check vent damper operation

1. 2AISEIROOMOTHERMOSTAT TO CALL FOR HEAT 6ENT

damper actuator will slowly open vent damper.

2.7HEN VENT DAMPER IS FULLYYOPEN — Main gas valve will open and main burners will ignite. (Spark-ig- nited pilot controls will first light pilot, then allow main burners to ignite.)

6ENT DAMPER MUST BE FULLYL OPEN before main burners light. If vent damper does not fully open, flue products such as carbon monoxide will escape into house, causing se- vere personal injury or death.

3.,OWERETHERMOSTAT SETTING — Main burner flames will go out, then vent damper will close.

4.2EPEAT 3TEPSETHROUGH  several times to verify operation.

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5.Return thermostat to normal setting.

6.Set thermostat heat anticipator setting indicated on wiring diagram.

Check vent system operation

 #HECKEVENT SYSTEM AT LEASTAONCE AAMONTHNDURING

heating season. With boiler firing, hold candle or MATCHTBELOWLLOWERWEDGE OF DRAFTAHOOD hSKIRTv )F flame does not blow out, but burns undisturbed, vent system is functioning properly. If flame blows out or flickers drastically, inspect vent system for obstructions or other causes of improper venting (such as exhaust fans in boiler room).

Part Number 550-101-009/0107