Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
9 Servicing
83309302 1/2018-05 La
124-196
9.1.5 Cleaning the heat exchanger
Observe notes on servicing [ch.9.1.1].
Remove burner surface [ch.9.1.3].
Remove electrodes [ch.9.1.4].
Heat exchanger cleaning kit (accessory) required.
Insert cover plate1 from cleaning kit.
Heat exchanger is protected against falling dirt.
Clean combustion chamber with brush from cleaning kit and vacuum.
Remove cover plate.
Remove disc nuts from service cover3.
Remove service cover.
Remove gasket1 and clean seal groove2.
Clean heat exchanger with cleaning blades and brush from cleaning kit.
Vacuum out any dislodged dirt.
Clean sealing surfaces4.