63
CH WATER PRESSURE SWITCH REPLACEMENT
1. Refer to Frame 40.
2. Drain the boiler. Refer to frame 55.
3. Pull off the two electrical connections.
4. Using a suitable tool, pull out the metal retaining clip.
5. Carefully withdraw the pressure switch.
6. Fit the new pressure switch and re-assemble in reverse
order.
7. Rell the boiler.
8. Check operation of the boiler. Refer to Frames 29 & 30.
3
4
5
3
1. Refer to Frame 40.
2. Isolate the DHW supply and drain down.
Refer to Frame 55.
3. Turn the housing anti clockwise and
pull forward to remove the cartridge. Be
aware of water spillage.
4. Using a pair of pliers, pull out the plastic
lter/ow regulator.
5. Clean or replace lter as necessary.
6. Reassemble in reverse order.
7. Re-instate the DHW supply and check for
leaks.
8. Check operation of the boiler. Refer to
Frames 29 & 30.
4
1. Refer to Frame 40.
2. Drain down the boiler. Refer to Frame 55.
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. Rell the boiler.
8. Check the operation of the boiler. Refer to Frames
29 & 30.
65
FLOW THERMISTOR REPLACEMENT
4
3
64
DHW FILTER & DHW FLOW REGULATOR CLEANING / REPLACEMENT
SERVICING
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