Maintenance - Weil-McLain Aqua Balance WMB-155 Manual

W
TM
AquaBalance

35 Maintenance

Disconnect power
Electrical shock hazard — Discon-
nect all electrical power to the boiler
before attempting maintenance pro-
cedures. Failure to complete could
result in severe personal injury, death
or substantial proper t y damage.
Jacket side panels are now
remove able for servicing
The boiler's right and left side jacket panels
are remove able, and can be removed by
removing the screws on the top and bot-
tom of each panel.
Re-install boiler jacket door
after startup or servicing
Reinstall boiler jacket door after start-
up or servicing. The boiler jacket door
must be securely fastened to the boiler to
prevent boiler from drawing air from in-
side the boiler room. This is particularly
important if the boiler is located in the
same room as other appliances.
Failure to keep the jacket door securely
sealed and fastened could result in severe
personal injury or death.
Start-up and check/out
Removing and reinstalling components
can change boiler behavior. After any
maintenance procedure, you must prove
the boiler is operating correctly. To do
so, follow the complete procedure for
boiler and system start-up, beginning on
page 70.
Failure to comply could result in severe
personal injury, death or substantial
property damage.
Label wires
Label all wires prior to disconnection
when servicing controls. Wiring errors
can cause improper and dangerous
operation.
Part number 550-100-305/0118
M -
ALL OUNT GAS FIRED WATER BOILER
—
Boiler Manual
Clean condensate trap
1. See Figure 135.
2. Disconnect top clean out cap nut that secures the trap body to
the boiler condensate connection.
3. Remove the clean out cap.
4. Check for any sediment and clean out if necessary.
5. Re-assemble gasket and clean out cap.
6. Fill trap with fresh water by pouring into the condensate drain
line. Make sure the trap line is unobstructed and flows freely.
DO NOT loop condensate drain hose.
7. Reattach the trap to the boiler condensate drain outlet. Check
for secure connection.
Figure 135
Condensate trap cleaning
Condensate
drain line
Inspect and clean ignition electrode
Wait until heat exchanger/boiler is cooled down
before proceeding. Failure to do so can cause severe
injury.
1. Disconnect the ground wire and ignition cable connected to
the electrode. Ignition wire pulls out of back of control module.
Remove the ignitor wire by pulling on the connector, not the wire.
Figure 136 Inspecting ignition electrode
Cap gasket
Clean out cap
107