Diverter Valve Internal Cartridge Replacement; Dhw Plate Heat Exch Replacement; Pump Head Replacement - IDEAL LOGIC + Combi 24 Installation And Servicing

64 DIVERTER VALVE INTERNAL CARTRIDgE REpLACEMENT

FRONT CARTRIDgE REpLACEMENT
1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 59.
3. Remove the diverter valve head. Refer
to Frame 54.
4. Unscrew the top connection to access
the internal cartridge.
5. Fit the new valve mechanism ensuring
the correct fit of the pin.
6. Reassemble in reverse order.
7. Refill the boiler. Refer to Frame 24.
8. Check operation of the boiler. Refer to
Frames 32-36.
65 DhW pLATE hEAT ExCh. REpLACEMENT
1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 59.
3. Remove condensate trap/siphon. Refer to Frame 55.
4. Remove the diverter valve actuator. Refer to Frame 54.
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 defined from the location of the holes on the brass
mounting.
8. Reassemble in reverse order.
9. Refill the boiler. Refer to Frame 24.
10. Check operation of the boiler. Refer to Frames 32-36.
50
SERVICING
REAR CARTRIDgE REpLACEMENT
1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 59.
3. Remove the diverter valve head. Refer to Frame 54.
4. Remove the flow pipe. Refer to Frame 70 no. 12.
5. Disconnect the CH flow pipe and DHW outlet pipe union connections underneath
the boiler. Refer to Frame 59.
6. Remove the plate heat exchanger LH fixing screw. Refer to Frame 65.
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 fit of the pin.
10. Reassemble in reverse order.
11. Refill the boiler. Refer to Frame 24.
12. Check operation of the boiler. Refer to Frames 32-36.
FRONT CARTRIDgE
3
4
5
REAR CARTRIDgE
9

66 pUMp hEAD REpLACEMENT

1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 59.
3. Disconnect the electrical plug 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. Refill the boiler. Refer to Frame 24.
9. Check operation of the boiler. Refer to Frames 32-36.
3
4
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Ideal Logic Combi -
8
Installation and Servicing