Technical data

ManualsBrandsAlpha Boilers ManualsBoilerAlpha 240XP

Alpha 240XP and 240XE - Component Replacement

Fig. 29

Fig. 30

Rear cover of

control box

Push fit

Suppressor

Mains

Blue

Green/Yellow

Mains

Brown

Switch bracket

screw

DHW flow

microswitch assy.

Primary flow

microswitch assy.

Main PCB

Fixing screws

8.22 MAIN PCB - Fig. 29

1. Gain access as described in section 8.1.

2. Disconnect all the wiring connectors from

the PCB.

3. Remove the four fixing screws and

carefully withdraw the board from the

switch spindles.

4. Re-assemble in reverse order. Refer to the

Wiring Diagram on page 34 or 35 for

connections.

8.23 SUPPRESSOR - Fig. 30

1. Gain access as described in section 8.1.

2. Withdraw the suppressor from the control

panel cover.

3. Disconnect the wiring and re-assemble with

a new suppressor. Connect the wiring as

follows:-

Mains Brown to L2, Mains Blue to N4, Brown

to U1, Blue to 3U, Green/Yellow to

8.24 DHW AND PRIMARY FLOW SWITCHES - Fig. 31

Note that both switches are the same.

1. Gain access as described in section 8.1.

2. Remove the screw securing the switch bracket to the

diverter valve, disconnect the wiring and remove. Re-

assemble in reverse order with a new switch. Ensure

that the bracket is located under the nut flange.

3. Connect the wiring as follows:-

PRIMARY flow switch (back of diverter valve), red

wires to terminals as shown in Fig. 31.

DHW flow switch (front of diverter valve), green wires

to terminals as shown in Fig. 31.

8.25 CLOCK (if fitted) - Refer to Fig. 15

1. Gain access as described in section 8.1.

2. 240XE only - Remove the ignition PCB as described

in section 8.18.

3. Disconnect the wiring from the clock.

4. Remove the clock retaining screws and withdraw the

clock from the control panel.

5. Fit the new clock, and connect the wires as follows:-

Blue to terminal 1, Brown to terminal 2 and Black wires

to terminals 3 and 4, (or as per the instructions supplied with the clock).

6. Re-assemble in reverse order. Refer to the User's instructions and the boiler's

control cover to set the clock.

Switch bracket

screw

Fig. 31