42
14.0 Changing Components
© Baxi Heating UK Ltd 2012
14.7
Safety Thermostat
(Fig. 65)
1. Pull the plug off the thermostat.
2. Remove the screws securing the thermostat to the
mounting plate on the flow pipe.
3. Reassemble in reverse order, ensuring that the plug is
pushed fully on.
14.8
Central Heating Temperature Sensor (NTC)
(Fig. 84)
1. Drain the boiler primary circuit. Pull the plug off the safety
thermostat and disconnect the in-line plug in the sensor wire.
2. Unscrew the sensor from the heat exchanger. Reassemble
the new sensor in reverse order, using a new sealing washer.
14.9
Water Pressure Switch (Fig. 84a)
1. Drain the boiler primary circuit.
2. Pull the two wires of the microswitch.
3. Draw the securing clip forwards to release the assembly.
The clip is captive and does not need to be fully removed.
4. Reassemble in reverse order.
14.10
DHW Temperature Sensor (NTC)
(Fig. 85)
1. Turn off the mains water supply and draw off the residual
domestic hot water.
2. Ease aside the retaining tab on the sensor and disconnect
the electrical plug.
3. Remove the retaining clip and pull the sensor out of the
pocket.
4. Reassemble in reverse order, ensuring the sensor is fully
inserted. The plug will only fit one way.
Central Heating
Temperature Sensor
Safety Thermostat
Fig. 85
Fig. 83
Fig. 84
DHW Temperature
Sensor
Retaining Clip
Pump removed for clarity
Fig. 84a
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