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Part Number 550-142-300/0520
31
CGa Series 3 Gas-Fired Water Boiler — Boiler Manual
Start-up — operate boiler (continued)6b
Start-up — if boiler doesn’t start . . .6c
Check for:
Eliminate all system leaks.
Continual fresh makeup water
will reduce boiler life. Minerals
can build up in sections, reduc-
ing heat transfer, overheating cast
iron, and causing section failure.
If you discover evidence of any
gas leak, shut down the boiler at
once. Find the leak source with
bubble test and repair immedi-
ately. Do not start boiler again
until corrected. Failure to comply
could result in severe personal
injury, death or substantial prop-
erty damage.
Do not use petroleum-based
cleaning or sealing compounds
in boiler system. Severe damage
to boiler will occur, resulting in
substantial property damage.
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, refer to
Troubleshooting, Section 11 of this manual.
1. Loose connections, blown fuse or service switch off?
2. Boiler temperature adjustment set below boiler
water temperature?
3. Thermostat set below room temperature?
Start the boiler
• Follow the Operating Instructions from Section
9
to start the boiler. Remove boiler jacket door and
note the gas valve manufacturer and model number.
Use only the operating instruction which applies to
this gas valve (see Table 5, page 30). (The operating
instruction label on the boiler provides the same
information.)
• See
Section 6c if boiler fails to start.
Check system and boiler
1. Check system piping for leaks. If found, shut
down boiler and repair immediately.
2.
Vent air from system using manual vents. Air in
the system will interfere with circulation and cause
heat distribution problems and noise.
3.
Inspect vent system thoroughly for signs of
deterioration from corrosion, physical damage or
sagging. Verify that masonry chimney liners are in
good condition, with no obstructions, and there are
no openings into the chimney.
4.
Check around the boiler for gas odor following the
procedure of Section 6a of this manual.
5.
Verify operation per Section 6d. Perform check-out
procedure in Section 7 and fill in the Installation
and service certificate
on the same page.
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