Keston Combi 30 - Page 54

54
SERVICING
Keston Combi - Installation and Servicing
1. Refer to Frame 45.
2. Drain down the boiler. Refer to Frame 60.
3. Unplug the electrical lead.
4. Unscrew the thermistor (to facilitate removal a
13mm socket spanner should be used).
5. Fit the new thermistor using the sealing washer
provided.
6. Reassemble in the reverse order.
7. Rell the boiler. Refer to Frame 22.
8. Check the operation of the boiler. Refer to Frame
36.
71 NO FLOW THERMISTOR REPLACEMENT
4
3
70 DHW FLOW REGULATOR CLEANING / REPLACEMENT
1. Refer to Frame 45.
2. Isolate the mains cold water supply to the
boiler.
3. Drain the boiler DHW circuit. Refer to Frame
60.
4. Remove the DHW ow turbine cartridge.
Refer to Frame 69.
5. Unscrew the ow regulator housing.
6. Inspect the ow regulator for any blockage
and remove if necessary.
7. Reassemble in reverse order.
8. Rell the boiler. Refer to Frame 22.
9. Check Operation of the boiler. Refer to
Frame 36.
6
5
SERVICING
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