Baxi 124 Combi - 13.14 Plate Heat Exchanger (Fig. 62)

39
13.0 Changing Components
© Baxi Heating UK Ltd 2017
Plate Heat
Exchanger
Rubber Seal
Hydraulic Pressure
Sensor
Securing Clip
(captive)
Plate Heat Exchanger
Securing Screws
Pump, Gas Valve
Assemblies and Pipework
removed for clarity
13.14 Plate Heat Exchanger (Fig. 62)
1. Close the flow & return isolation taps and the cold
mains inlet. Drain the primary circuit and draw off any
residual DHW.
2. Refer to Annual Servicing Section 12.2 paragraphs 5
to 8 and remove the fan etc.
3. Undo the screws securing the plate heat exchanger
to the hydraulic assembly.
4. Withdraw the plate heat exchanger upwards and to
the left to remove.
Seals
5. There are four rubber seals between the hydraulic
assembly and heat exchanger which may need
replacement.
6. Ease the seals out of the hydraulic assembly. Replace
carefully, ensuring that the seal is inserted parallel and
pushed fully in.
7. When fitting the new heat exchanger note that the
right hand location stud is offset towards the centre
(Fig. 62).
8. Reassemble in reverse order.
13.15 Hydraulic Pressure Sensor (Fig. 63)
1. Close the flow and return isolation taps and drain the
primary circuit. Remove the fan and collector assembly.
2. Remove the plug from the sensor and pull the
retaining clip forwards. The clip is captive and does not
need to be fully removed.
3. Reassemble in reverse order.
Control Box removed
for clarity
Plug
Fig. 62
Fig. 63
R.H. Stud -
Note offset