37
12.0 CHANGING COMPONENTS
12.8
Flue/Heat Exchanger Thermostat
Sensor
(Fig. 53)
1. Ease the retaining tab on the sensor away and
disconnect the electrical plug.
2. Turn the sensor 90
o
anticlockwise to remove - it is a
bayonet connection.
3. Reassemble in reverse order.
12.9
Water Pressure Sensor
(Fig. 54)
1. Drain the primary circuit.
2. Disconnect the two wires from the sensor.
3. Undo the nut on the flow pipe securing and sealing
the sensor.
4. Remove the sensor, examine the sealing washer,
replacing if necessary.
5. Reassemble in reverse order. The component is not
polarised - either wire will fit each terminal.
12.10
Central Heating Temperature Sensor
(NTC)
(Fig. 54)
1. Ease the retaining tab on the sensor away and
disconnect the electrical plug.
2. Unscrew the sensor from it’s pocket and reassemble
in reverse order. The plug will only fit one way.
12.11
Safety Thermostat
(Fig. 54)
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.
12.12
DHW Temperature Sensor (NTC)
(Fig. 55)
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 plate heat exchanger
manifold. Examine the sealing washer,replacing if
necessary.
4. Reassemble in reverse order. The plug will only fit
one way.
Central Heating
Temperature Sensor
Safety
Thermostat
Flow Pipe
Fig. 54
DHW Temperature
Sensor
Fig. 55
Plate Heat
Exchanger
Pressure
Sensor
Flue/Heat Exchanger
Thermostat Sensor
Electrical
Plug
Fig. 53
Publication No. 5116282
Содержание Gold 24 HE
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