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Part number 550-110-260/0200
37
Boiler Manual
❏ Service . . . . . . . . . .
❏ Inspect . . . . . . . . . .
Inducer motor
1. With boiler power OFF, place a few drops of S.A.E.
20 motor oil in each of the two oil cups.
Use only S.A.E. 20 motor oil to
lubricate the inducer motor. Do not
use universal household oils. Motor
could be damaged, resulting in
possible severe property damage.
Oiled bearing circulators
1. The circulator shipped with the CGs boiler is
water-lubricated. No oiling is required.
2. Check other circulators in the system. Oil any
circulators requiring oil, following circulator
manufacturer’s instructions. Over-oiling will
damage the circulator.
If insulation is damaged or
displaced, do not operate the boiler.
Replace or reposition insulation as
necessary. Failure to replace
damaged insulation can result in a
fire hazard, causing severe personal
injury, death or substantial property
damage.
Burners, base and inlet air box
1. After turning off power to the boiler, remove the inlet
air box top panel (Figure 27, item 13, page 54).
2. Inspect gasket (item 14). Replace if necessary.
3. Inspect burners and all other components in the
inlet air box and boiler base.
4. If burners must be cleaned, first remove item 4,
Figure 27, page 54. Access the burner assembly by
first removing burner baffle, item 4. Then remove
the screws securing the burner tray to the manifold.
Slide the burner tray out. Then brush and vacuum
the burners thoroughly, making sure all ports are
free of debris.
5. Inspect the slotted jacket cooling openings in the
bottom left and rear of the base pan (
Figure 27,
item 1, page 54).
6. Inspect the base insulation. Pay attention to the
WARNING on page 36 regarding working with
insulation materials. Verify that the insulation is
intact and secure against all four sides of the base.
Boiler heating surfaces
1. Disconnect the vent pipe at the boiler inducer outlet
connection after turning off power to the boiler.
2. Use a bright light to inspect the flue pipe interior
and inducer interior.
3. Inspect the boiler vent outlet area and heating
surfaces by looking through the opening.
4. If the vent pipe or inducer interior show evidence
of soot, follow Cleaning boiler heating surfaces
in this manual section to remove the flue collector
and clean the boiler if necessary after close
inspection of boiler heating surfaces. If there is
evidence of rusty scale deposits, check the water
piping and control system to make sure the boiler
return water temperature is properly maintained
(per this manual).
5. Reconnect vent to inducer outlet and replace all
boiler components before returning to service.
6. Check inside and around boiler for evidence of any
leaks from the boiler. If found, locate source of leaks
and repair.
Do not use petroleum-based cleaning or sealing
compounds
in boiler system. Severe damage to boiler
will occur, resulting in substantial property damage.
Eliminate all system or boiler leaks. Continual fresh
makeup water will reduce boiler life. Minerals can build
up in sections, reducing heat transfer, overheating cast
iron, and causing section failure. Leaking water may
also cause severe property damage.
Electrical shock hazard — Turn off power to the boiler
before any service operation
on the boiler except as
noted otherwise in this instruction manual. Failure to
turn off electrical power could result in electrical shock,
causing severe personal injury or death.
Condensate drain system
1. Inspect condensate drain fittings and tubing. Verify
that condensate can flow freely to drain.