Part number 550-142-058/0811
77
WM97+
gas
-
fired
water
boiler
—
Boiler Manual
Annual startup
(continued)
The boiler should be inspected and
started annually, at the beginning of
the heating season, only by a qualified
service technician. In addition, the
maintenance and care of the boiler
designated in Figure 78, page 75 and
explained on the following pages must
be performed to assure maximum
boiler efficiency and reliability. Fail-
ure to service and maintain the boiler
and system could result in equipment
failure.
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.
Address reported problems
1. Inspect any problems reported by owner and correct before
proceeding.
Inspect boiler area
1. Verify that boiler area is free of any combustible materials,
gasoline and other flammable vapors and liquids.
2. Verify that air intake area is free of any of the contaminants
listed on page 15 of this manual. If any of these are present
in the boiler intake air vicinity, they must be removed. If
they cannot be removed, reinstall the air and vent lines per
this manual.
Inspect boiler interior & door gaskets
1. Remove jacket front door and inspect interior of boiler.
2. Visually inspect the door gaskets. Make sure all are in good
condition. Obtain replacements if any gasket is damaged.
Door gaskets must be intact, and must provide a
reliable seal. Replace any damaged gasket.
3. Remove the venturi air inlet silencer and clean if necessary.
Reinstall silencer.
4. Vacuum any sediment from the inside of the boiler and
components. Remove any obstructions.
Do not use solvents to clean any of the boiler
components. The components could be damaged,
resulting in unreliable or unsafe operation.
Clean condensate trap
1. See Figure 79.
2. Disconnect top nut that secures the trap body to the boiler
condensate connection (see Figure 47, page 43).
3. Remove the cleanout cap and remove the trap internal parts
as shown.
4. Clean all trap components.
5. Re-assemble trap assembly. Re-install all lower gasket.
6. Make sure the trap ball moves freely when re-inserted.
7. Fill trap with fresh water by pouring into the top of the trap
body. Continue filling slowly until water begins flowing out
the condensate drain line. Make sure the trap line is unob-
structed and flows freely.
8. Reattach the trap to the boiler condensate outlet. Push the
trap up until fully engaged. Then twist the upper nut clock-
wise to tighten. Check for secure connection.
Figure 79
Condensate trap cleaning
Trap ball
Upper nut
Cleanout cap
Valve seat, O-ring
and gasket
Condensate
drain line
Check all piping for leaks
Eliminate all system or boiler leaks. Continual fresh
make-up water will reduce boiler life. Minerals
can build up in the heat exchanger, reducing heat
transfer, overheating heat exchanger, and causing
heat exchanger failure. Leaking water may also
cause severe property damage.
1. Inspect all water and gas piping and verify to be leak free.
2. Look for signs of leaking lines in the system and in the boiler
and correct any problems found.
3. Check gas line using procedure on page 44.
