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Part Number 550-142-303/1120
32
EG
/
PEG sEriEs 6
•
EGH sEriEs 5 Gas-firEd boilErs — boilEr manual
Service and maintenance (continued)
❏ Service . . . . . . . . . .
Gauge glass (steam boilers)
Normal waterline is halfway up gauge glass. Clean
when needed.
1. Close lower gauge cock.
2. Open pet cock.
3. Open lower gauge cock and allow a small amount of water to
flush out through open pet cock.
4. Close pet cock.
5. Open lower gauge cock.
Boiler pressure must be low to eliminate potential
of severe burns.
If gauge glass breaks, close both gauge cocks. Replace
gauge glass. Do not replace with thin glass tubing.
Failure to comply could cause severe personal injury,
death or substantial property damage.
Temperature / LWCO sensor
The temperature/LWCO sensor may accumulate deposits on the
probe surface. Annual inspection and cleaning of the probe will
improve boiler performance.
Disconnect power, unplug harness from sensor.
a. Drain boiler water to a level below the sensor.
b. Remove sensor from boiler.
c. Wipe any built up contaminates from probe and insulator
surfaces.
d. Reinstall sensor into boiler.
e. Refill boiler to correct waterline.
Probe-type low water cutoff (when used)
Clean probe-type low water cutoff (when used) for
proper operation.
1. Turn off power to boiler and wait 5 minutes.
2. Drain water to bottom of gauge glass.
3. Turn on power.
4. Set thermostat to call for heat. Red neon lamp on lower water
cutoff should light.
5. Wait 5 minutes. Boiler should not fire.
6. Refill boiler to correct waterline. Red lamp should go off.
7. Wait 5 minutes. Boiler should fire.
8. Return thermostat to normal setting.
Float-type low water cutoff (when used)
Clean float-type low water cutoff to clear float
chamber of sediment.
1. Open blow down valve on the bottom control.
2. Drain water into a bucket.
Scald potential. Boiler pressure must be low to avoid
the potential of severe burns from steam.
3. Check float-type low water cutoff for proper operation:
a. Turn operating control to call for heat.
b. Before water gets hot, drain to bottom of gauge glass.
Boiler should shut off after water level lowers a few inches.
c. Refill boiler to correct waterline. Boiler should come back
on.
❏ Start-up . . . . . . . . . .
1. Perform “Start-up” procedures in this manual, pages 24–28, includ-
ing “Verify operation” of burners and vent damper on page 27.
2. C
heck gas piping, per pages 22 and 24, verifying no indica-
tions of leakage and all piping and connections are in good
condition.
3. Read the “Operating Instructions” in the Control Supplement.
4. Start the boiler following the “Operating Instructions.”
❏ Check/test . . . . . . . . . .
Gas piping
1. Sniff near floor and around boiler area for any indication of
a gas leak.
2. Test gas piping using bubble test, per page 22 of this manual,
if there is any indication of a leak.
Boiler waterline
Normal waterline is halfway up gauge glass.
Limit controls
Inspect and test the boiler limit control. Verify operation by turn-
ing control set point below boiler pressure. Boiler should cycle
off. Return dial to original setting.
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