Keston Combi 30 - Diverter Valve Internal Cartridge Replacement

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SERVICING
Keston Combi - Installation and Servicing
65 DIVERTER VALVE INTERNAL CARTRIDGE REPLACEMENT
FRONT CARTRIDGE REPLACEMENT
1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 65.
3. Remove the diverter valve head. Refer
to Frame 55.
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 22.
8. Check operation of the boiler. Refer to
Frame 36.
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64 DHW FLOW TURBINE CARTRIDGE REPLACEMENT
1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 60.
3. Remove condensate trap/siphon. Refer to
Frame 56.
4. Remove the DHW ow turbine sensor. Refer to
Frame 59.
5. Unscrew the top connection to access the
internal part.
6. Fit the new turbine cartridge.
7. Ret the turbine ow sensor
8. Reassemble in reverse order.
9. Rell the boiler. Refer to Frame 22.
10. Check operation of the boiler. Refer to
Frames 36.
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REAR CARTRIDGE REPLACEMENT
1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 60.
3. Remove the diverter valve head. Refer to Frame 55.
4. Remove the ow pipe. Refer to Frame 22 no. 12.
5. Disconnect the CH ow pipe and DHW outlet pipe union connections underneath
the boiler. Refer to Frame 60.
6. Remove the plate heat exchanger LH xing screw. Refer to Frame 66.
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 22.
12. Check operation of the boiler. Refer to
Frame 36.
FRONT CARTRIDGE REAR CARTRIDGE
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SERVICING
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