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14.0 Changing Components
46
© Baxi Heating UK Ltd 2009
14.23 Secondary Heat Exchanger (Fig. 87)
1. Drain the primary circuit
2. Undo the four screws securing the right hand case
panel. Remove the panel.
3. Prise the connecting clips from the heat exchanger
return pipe and the boiler return pipe. Remove the
pipes.
4. Remove the fan and hood assembly as described in
Section 14.1
5. Remove the nut securing the elbow to the secondary
heat exchanger. Draw the elbow and outlet pipe
forwards.
6. Remove the secondary heat exchanger from the
outer drum by easing it forward.
7. Reassemble in reverse order of dismantling.
14.24 Flue Overheat Thermostat (Fig. 88)
NOTE: The flue overheat thermostat includes a
reset button. Check that the thermostat will not
reset before replacing.
1. Remove the fan and hood assembly as described in
Section 14.1
2. Pull the two wires off the terminals on the flue
overheat thermostat. Unscrew the thermostat from the
adaptor in the outlet elbow.
3. Reassemble in reverse order of dismantling.
Overheat Thermostat
Secondary
Heat Exchanger
Outer Drum
Boiler Return Pipe
Pipe Connecting Clip
Elbow
Heat Exchanger
Return Pipe
Fig. 87
Fig. 88