45
14.0 Changing Components
© Baxi Heating UK Ltd 2012
14.18
Plate Heat Exchanger (Fig. 94)
1. Drain the boiler primary circuit and remove the gas valve
as described in Section 14.23.
2. Remove the clip securing the expansion vessel braided
hose to the hydraulic assembly.
3. Undo the screws securing the plate heat exchanger to the
hydraulic assembly.
4. Withdraw the heat exchanger upwards and to the left,
holding the condensate hose to one side
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 more than the
left hand one.
8. Reassemble in reverse order.
14.19
DHW Flow Regulator & Filter (Fig. 95)
1. Pull out the securing clip and prise the regulator and filter
assembly out of the hydraulic inlet block.
2. Twist the body to unlock the bayonet connection and
remove the regulator.
3. Examine and clean the filter, and reassemble in reverse
order.order.
14.20
Diverter Valve Motor
(Fig. 96)
1. Undo the screw securing the electrical plug to the motor
unit. Disconnect the plug.
2. Hold the motor unit in place against the spring pressure of
the valve and remove the securing clip.
3. Remove the motor.
4. When fitting the new motor it will be necessary to hold
the unit firmly while depressing the valve return spring.
Plate Heat Exchanger
Rubber Seal
Fig. 94
LH Location Stud
Pump and Pipework
removed for clarity
DHW Flow
Regulator & Filter
Diverter Valve
Motor
Fig. 95
Fig. 96