Baxi Platinum 2 Combi 28 GA Installation & Servicing Instructions Manual page 39

Electrical
Plug
Fig. 57
Central Heating
Temperature Sensor
Safety Thermostat
Fig. 58
Retaining Clip
Plug
Hydraulic Pressure
Sensor
© Baxi Heating UK Ltd 2011
Flue Sensor
Control Box removed
for clarity
DHW NTC Sensor
Assemblies and Pipework
Fig. 59
15.7
1. Ease the retaining tab on the sensor away and disconnect
the electrical plug.
2. Turn the sensor 90° anticlockwise to remove - it is a
bayonet connection.
3. Reassemble in reverse order.
15.8
1. There is one sensor on the flow (red wires) and one
sensor on the return (blue wires).
2. After noting the position prise the sensor clip off the pipe
and disconnect the plug.
3. Connect the plug to the new sensor and ease the clip onto
the pipe as close to the heat exchanger as possible.
15.9
1. Pull the terminals off the safety thermostat.
2. Remove the screws securing the thermostat to the
mounting plate on the flow pipe.
3. Reassemble in reverse order, ensuring that the terminals
are pushed fully on.
15.10
1. Turn off the mains cold water supply tap and draw off the
residual domestic hot water.
2. Ease the retaining tab on the sensor away and disconnect
the electrical plug.
3. Unscrew the sensor from the hydraulic outlet assembly.
Examine the sealing washer, replacing if necessary.
4. Reassemble in reverse order. The plug will only fit one way.
15.11
1. Close the flow and return isolation taps and drain the
primary circuit.
2. Disconnect the plug from the sensor.
3. Prise off the spring clip and remove the sensor. Examine
the 'O' ring, replacing if necessary.
Pump, Gas Valve
4. Reassemble in reverse order.
removed for clarity
15.0 Changing Components
Flue Sensor (Fig. 57)
Heating Flow & Return Sensors (Fig. 58)
Safety Thermostat (Fig. 58)
DHW NTC Sensor (Fig. 59)
Hydraulic Pressure Sensor (Fig. 59)
39