51
Installation and Servicing
SECTION 3 - SERVICING
3.24 CH WATER FLOW SENSOR REPLACEMENT
1.
Refer to Section 3.8.
2.
Drain down the boiler. Refer to Section 3.19.
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.
Refill the boiler. Refer to Section 2.16.
8.
Check the operation of the boiler. Refer to
Sections 2.23 & 2.24.
3.25 CONTROL / NO FLOW THERMISTOR REPLACEMENT
4
3
1.
Refer to Section 3.8.
2.
Drain the boiler. Refer to Section 3.19.
3.
Pull of the electrical connection
4.
Turn the retaining collar anti-clockwise and
pull the head from the housing.
5.
Fit the new water flow sensor head, ensuring
the electrical lead connections wires point to
the bottom of the boiler as shown.
6.
Re-assemble in reverse order.
7.
Re-fill the boiler. Refer to Section 2.16.
8.
Check the operation of the boiler. Refer to
Sections 2.23 & 2.24
5
4
SER
VICING
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