GWS-090E
Gas-Fired Water Boiler –
Boiler Manual
22
Part Number 550-110-737/1108
11 Service and maintenance
continued
❏
Inspect . . . . . . . . . .
Reported problems
Inspect any problems reported by owner and correct before
proceeding.
Boiler area
1. Verify that boiler area is free of any combustible materials,
gasoline and other flammable vapors and liquids.
2. Verify that boiler area (and air intake) is free of any of the
contaminants listed in Table 3 on page 5 of this manual. If any
of these are present in the boiler intake air vicinity, they must
be removed.
Air openings
1. Verify that combustion and ventilation air openings to the
boiler room and/or building are open and unobstructed. Check
operation and wiring of automatic combustion air dampers, if
used.
2. Verify that boiler vent discharge and air intake are clean and
free of obstructions.
Flue gas vent system
1. Visually inspect entire flue gas venting system for blockage,
deterioration or leakage. Repair any joints that show signs
of leakage in accordance with vent manufacturer’s instruc
-
tions.
Failure to inspect for the above conditions and have
them repaired can result in severe personal injury
or death.
Pilot and main burner flames
1. Visually inspect pilot burner and main burner flames as di-
rected under Section 7, page 15 of this manual.
Water piping
1. Check the boiler interior piping and all system piping for signs
of leaks.
2. Repair any leaks before proceeding.
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.
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, overheat-
ing cast iron, and causing section failure. Leaking
water may also cause severe property damage.
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, fol-
low 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 com-
ponents 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.
Burners and base
1. After turning off power to the boiler, remove the inlet air box
top panel (Figure 16, item 13, page 34).
2. Inspect gasket (Figure 16, item 14, page 34).
2. Inspect burners and all other components in the inlet air box
and boiler base.
3. If burners must be cleaned, access the burner assembly by first
removing the burner baffle (Figure 16, item 4, page 34). 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.
4. Inspect the base insulation. Verify that the insulation is intact
and secure against all four sides of the base.
The boiler contains ceramic fiber and fiberglass
materials. Use care when handling these materials
per instructions on page 21 of this manual. Failure
to comply could result in severe personal injury.
If insulation is damaged or displaced, do not oper-
ate 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.
5. Replace inlet air box top panel.
Do not operate boiler without inlet air box top panel
secured in place. Failure to comply could result in
severe personal injury, death or substantial property
damage.
Condensate drain system
1. If vent system is equipped with a condensate drain, check the
hose and connections for tightness.
2. Verify the hose is unobstructed and in good condition and that
condensate can flow freely. Replace hose if necessary.
The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per instructions on
page 21 of this manual. Failure to comply could result in severe personal injury.
