IDEAL LOGIC Combi 24 - Diverter Valve Internal Cartridge Replacement; DHW Plate Heat Exch. Replacement; Pump Head Replacement

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SERVICING
Ideal Logic Combi - Installation and Servicing
62 DIVERTER VALVE INTERNAL CARTRIDGE REPLACEMENT
FRONT CARTRIDGE REPLACEMENT
1. Refer to Frame 43.
2. Drain the boiler. Refer to Frame 57.
3. Remove the diverter valve head. Refer
to Frame 52.
4. Unscrew the top connection to access
the internal cartridge.
5. Fit the new valve mechanism ensuring
the correct t of the pin.
6. Reassemble in reverse order.
7. Rell the boiler. Refer to Frame 24.
8. Check operation of the boiler. Refer to
Frames 32 & 33.
REAR CARTRIDGE REPLACEMENT
1. Refer to Frame 43.
2. Drain the boiler. Refer to Frame 57.
3. Remove the diverter valve head. Refer to Frame 52.
4. Remove the ow pipe. Refer to Frame 68 no. 12.
5. Disconnect the CH ow pipe and DHW outlet pipe union connections underneath
the boiler. Refer to Frame 57.
6. Remove the plate heat exchanger LH xing screw. Refer to Frame 63.
7. Remove the screw retaining the brass block to the bottom of the boiler casing
and lift the brass block clear of the boiler.
8. Unscrew the rear cartridge connection.
9. Fit the new valve mechanism ensuring the correct t of the pin.
10. Reassemble in reverse order.
11. Rell the boiler. Refer to Frame 24.
12. Check operation of the boiler. Refer to Frames 32 & 33.
FRONT CARTRIDGE REAR CARTRIDGE
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1. Refer to Frame 43.
2. Drain the boiler. Refer to Frame 57.
3. Remove condensate trap/siphon. Refer to Frame 53.
4. Remove the diverter valve actuator. Refer to Frame 52.
5. Remove the 2 allen screws securing the plate heat exchanger
to the brass housings.
6. Manoeuvre the plate heat exchanger out of the top LH or
centre of the controls area.
7. Fit the new plate heat exchanger, using the new o-rings
supplied.
Note. The mounting pins are offset so the correct position can
be dened from the location of the holes on the brass mounting.
8. Reassemble in reverse order.
9. Rell the boiler. Refer to Frame 24.
10. Check operation of the boiler. Refer to Frame 32 & 33.
63 DHW PLATE HEAT EXCH. REPLACEMENT
64 PUMP HEAD REPLACEMENT
1. Refer to Frame 43.
2. Drain the boiler. Refer to Frame 57.
3. Disconnect the electrical lead from the pump.
4. Remove the 4 Allen screws retaining the pump head.
5. Remove the pump head.
6. Fit the new pump head.
7. Reassemble in reverse order.
8. Rell the boiler. Refer to Frame 24.
9.
Check operation of the boiler. Refer to Frames 32 & 33.
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SERVICING