IBC Technologies Inc.
1-844-432-8422
|
www.ibcboiler.com
120-299E3
-
August 23, 2023
- Released Document
3 of 5
5. Remove the front cover.
6. Remove the top service panel with a T-20 Torx screwdriver.
Removing the Fan Assembly - SL 40-399 G3
1. Disconnect the two electrical connectors from the fan
(A).
2. Disconnect the female spade connections from the gas
valve (B).
3. Remove the 4 mm Allen bolts securing the gas valve
outlet to the 90 degree venturi mixer (C) adapter.
4. Separate the gas valve from the venturi mixer adapter.
Retain the O-ring for reinstallation.
5. Remove the four 7 mm hex nuts securing the fan to the
heat exchanger lid (D).
6. Remove the fan assembly, and set aside.
7. Remove the fan gasket (E) from the heat exchanger lid
and discard.
8. Remove and retain the 3 mm Allen bolts securing the
venturi mixer to the old fan.
Removing the Fan Assembly - EX400/500
1. Unplug the two fan wiring harnesses from the fan (A).
2. Disconnect the ignition cable and ground wire from the
ignitor , and wrap the loose wires around the ignition
module harness.
3. Remove the four 10 mm bolts that mount the fan to the
heat exchanger lid (D).
4. Push the air intake tube into the filter box to gain
clearance.
5. Disconnect the gas valve (B) electrical wires.
6. Remove the fan assembly.
7. Remove the fan gasket (E) from the heat exchanger lid
and discard.
8. Use a 3 mm Allen key to remove the three screws
connecting the mixing device (C) to the fan; keep these
for reinstallation. Remove and discard the fan O-ring that
is seated in the groove.
