Install Instructions

Part Number 550-142-782/1112
26
EG
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PEG SERIES 5
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EGH SERIES 5 GAS-FIRED BOILERS — BOILER MANUAL
4. Repeat Steps 2 through 4 several times to verify
operation.
5. Return thermostat to normal setting.
6. Set thermostat heat anticipator setting indicated on
wiring diagram.
Check venting system operation
With boiler firing, hold a candle or match below lower
edge of draft diverter “skirt.” If flame does not blow
out, but burns undisturbed, the vent system is working
properly. If flame blows out or flickers severely, the vent
system must be checked for obstructions or other causes
of improper venting.
Verify operation
Check burner flame — Pilot burner
1. Proper pilot flame (see Figure 28):
a. Blue flame.
b. Inner cone engulfing thermocouple.
c. Thermocouple glowing cherry red.
2. Proper pilot flame:
a. Overfired — Large flame lifting or blowing past
thermocouple.
b. Underfired — Small flame. Inner cone not engulfing
thermocouple.
c. Lack of primary air — Yellow flame tip.
d. Incorrectly heated thermocouple.
Check burner flame — Main burner
1. Proper main burner flame (see Figure 29):
a. Yellow-orange streaks may appear (caused by dust).
2. Improper main burner flame:
a. Overfired — Large flames.
b. Underfired — Small flames.
c. Lack of primary air — Yellow tipping on flames (soot-
ing will occur).
Check vent damper operation
 2AISE ROOMTHERMOSTAT TOCALL FORHEAT 6ENT
damper actuator will slowly open vent damper.
2.
7HENVENTDAMPERISFULLYOPEN — Pilot will light,
then allow main burners to ignite.
 6ENTDAMPER MUSTBE FULLYOPENBEFORE
main burners light. If vent damper does
not fully open, flue products such as
carbon monoxide will escape into house,
causing severe personal injury or death.
3. Lower thermostat setting — Main burner flames
will go out, then vent damper will close.
Start-up (continued)
If boiler doesn’t start . . . Check for:
1. Loose connections, blown fuse or service switch off?
2. High limit switch set below boiler pressure?
3. Thermostat set below room temperature?
4. Gas not turned on at meter or boiler?
5. Incoming gas pressure less than:
5” w.c. for natural gas? 11” w.c. for propane gas?
6. If none of the above corrects the problem, see
“Troubleshooting” in the Control Supplement.
&IGURE Typical pilot burner flame
&IGURE Typical main burner flame