Calumet GSA Manual - 11 Service and Maintenance
GSA Gas-Fired Steam Boilers – Boiler Manual
22
Part Number 550-110-738/0703
11 Service and maintenance
continued
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 12 of this manual, if
there is any indication of a leak.
Boiler waterline
Normal waterline is halfway up gauge glass.
Limit controls
1. Inspect and test the boiler limit control. Verify operation by turning
control set point below boiler pressure. Boiler should cycle off.
Return dial to original setting.
Gauge glass
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.
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❏ Service. . . . . . . . . .
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❏ Check/test. . . . . . . . . .
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❏ Start-up. . . . . . . . . .
1. Perform “Start-up” procedures, Section 7, pages 14-15, including
“Verify operation” of burners and vent damper on page 15.
2. Check gas piping, per pages 12 and 14, verifying no indications
of leakage and all piping and connections are in good condition.
3. Read the “Lighting Instructions” (page 18 or 19, whichever
applies based on boiler gas valve).
4. Start the boiler following the “Lighting Instructions”, page 18
or 19.
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❏ Check/test. . . . . . . . . .
Low water cutoffs
Probe-type low water cutoff (see below)
Clean probe-type low water cutoff 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 provided by others
— see below)
Clean float-type low water cutoff (when provided by others) to clear
float chamber of sediment.
1. Open blowdown valve at 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.