Check Automatic Air Vents - Weil-McLain WM97+ User's Information Manual

WM97+ G -
as fired water boiler
User maintenance procedures
MONTHLY
Maintenance
Part number 550-142-086/0113
— User's Information Manual
Check vent & air piping
1. Visually inspect the flue gas vent piping
and air piping for any signs of blockage,
leakage or deterioration of the piping.
Notify your qualified service technician
at once if you find any problem.
Failure to inspect the vent/air
system as noted above and have
them repaired by a qualified
service technician can result
in vent system failure, causing
severe personal injury or death.
Check the relief valve
1. Inspect the boiler relief valve and the
relief valve discharge pipe for signs of
weeping or leakage.
2. If the relief valve often weeps, the expan-
sion tank may not be working properly.
Immediately contact your qualified ser-
vice technician to inspect the boiler and
system.
Check the condensate
drain system
1. Visually inspect the condensate drain
tubing and the end of the tube. Make
sure the tube is in good condition and
that condensate can run freely.
2. Inspect the boiler condensate trap, locat-
ed under the boiler (see Figure 3). Make
sure the ball float in the trap is in place
and appears to be free to move. Make sure
the trap has water in it.
3. Contact a boiler service technician if you
observe any problems.

Check automatic air vents

(if used — automatic air vents
must be used with diaghragm-type
expansion tanks only)
1. See Figure 4.
2. Remove the cap from any automatic air
vent in the system and check operation
by depressing valve "B" slightly with the
tip of a screwdriver.
Scald hazard
air vent may be very hot. Avoid
contact to prevent possible
severe personal injury.
3. If the air vent valve appears to be work-
ing freely and not leaking, replace cap "A",
twisting all the way on.
4. Loosen cap "A" one turn to allow vent to
operate.
(continued)
5. Have vent replaced if it does not operate
correctly.
Figure 3
Ball float
Figure 4
Check display date and
time
1. Observe the date and time shown in the
— Water from
upper right of the control display.
2. If the date or time is incorrect, follow the
instructions in Figure 6, page 10 and Fig-
ure 9, page 12 to access the USER MENU
and change the date and/or time settings.
3. Keeping the data and time current makes
sure the control can record problems
accurately.
Boiler condensate trap
Contact a boiler service techni-
cian immediately if you find
the trap dry (no water inside).
Automatic air vent
A
B
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