Baxi ECOGEN 24/1.0, Installation & Servicing Instructions Manual

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2. Remove the screws securing the thermostat to the mounting plate on the flow pipe.
3. Fit new thermostat and reassemble in reverse order.
14.13 Ambient Sensor
1. Pull the connectors off the sensor.
2. Remove the screw.
3. Fit the new sensor and reassemble in the reverse order ­ ensure the gas valve electrical connections is securely home.
14.14 Water Flow Sensor ( Fig. 65 )
1. Drain the primary circuit (see Section 14.15 paragraph 2).
2. Carefully remove the 3 wire connector noting orientation ­ there is a small latch.
To remove just the sensor element only (recommended): ­
a) Remove the locking ring by twisting anti clockwise.
b) Withdraw the sensor element.
c) Reassemble in the reverse order ­ there is a key way to ensure the sensor is lined up with the body correctly.
d) Reconnect the 3 wire connector (
Fig. 65a ).
To remove just the sensor body: ­
a) Disconnect the four wires on the temperature sensors ( Fig. 63 ).
b) Remove the three pipe clips. One near the heat exchanger and two on the body flow sensor ( Figs. 63 & 65 ).
c) Carefully withdraw the assembly from the heat exchanger and the rear central heating flow pipe.
d) Remove the sensor body from the flow pipe.
e) Reassemble in the reverse order being careful not to damage the O rings.
Ensure the sensor body is fitted in the correct orientation with the arrow pointing to the back of the appliance (
Fig. 65 ).
f) Ensure the 3 wire connector is fitted the correct way round ( Fig. 65a ).