IBC Technologies Inc.
1-844-432-8422
|
www.ibcboiler.com
120-388E0
January 09, 2023
Released Document
4 of 7
Note
A ladder or step may be required to have a clear vertical view of the work area. Do not attempt to
remove the assemblies without a clear view, as damage to the connectors, screws or refractory
may occur.
Burner removal
Preparing the boiler for service
1. Remove call(s) for heat.
2. Remove power to the boiler at a wall switch or a breaker.
3. Shut off gas supply to the boiler.
Do not drain the boiler unless freezing conditions are expected during this procedure.
4. Allow the boiler to cool down to the ambient temperature.
5. Remove the front cover.
6. Remove the top service panel by removing the three yellow thumbscrews at the top corners of the
boiler.
Removing the fan and gas valve assembly
1. Disconnect the two electrical connectors from the fan (A).
2. Disconnect the electrical connector from the gas valve (B).
3. Position the wiring harnesses out of the way of the heat exchanger lid (F).
4. Disconnect the flare-fitting nut on the gas supply line (C).
5. Remove the four 8 mm hex bolts attaching the fan to the heat exchanger lid.
6. Remove the fan and gas valve assembly. Retain the fan gasket (D)
(and fan coupler and coupler
gasket for the G1)
for reinstallation.
Note
SL 20-115 G2 only
: The fan and venturi are one unit and must not be separated.
If necessary, the gas valve can be removed from the fan/venturi assembly by removing the two
Torx 25 screws. Retain the gasket between the gas valve and venturi for reinstallation, and
ensure that it is intact and free from debris. For LP models there will be a brass orifice installed in
the gasket. There is no orifice required for NG models.
