SERVICING
Mini Installation & Servicing
33
4 0 R E --- A S S E M B LY
Re --- assemble the boiler in the following order:
3 Refit the burner.
4 Reconnect the electrodes to the electronic pcb. See frame
37 for correct connectors.
5 Refit the combustion chamber panel.
6 Refittheinnercasecover.
IMPORTANT. Ensure the boiler sealing panel is correctly
fitted and that a good seal is made.
7 Refittheboilersideandfrontpanels.
8 Turn on the gas supply at the gas service cock.
9 Reconnect the electrical supply.
41 FAN AND VENTURI REMOVAL AND
CLEANING
1 Disconnect the electrical supply.
2 Remove outer and inner casing.
3 Disconnect the connectors A and the earth connection B.
A
B
4 Disconnect the pipe which connects the venturi device to
the air pressure switch.
5 Unscrew the screws C and remove the clamp D.
C
D
F
If the right clearance is at least 50 cm (20”)....
6 Unscrew the 3 sc rews E and remove the fan and skip to
step 9
E E
F
If the right clearance is less than 50 cm (20”)....
6 Remove the combustion chamber panel (see frame 36)
7 Remove the 3 screws F and remove the flue hood with the
fan.
8 Unscrew the 3 screws E and remove the fan.
9 Check that the impeller runs freely. Clean with a soft brush
or renew as necessary. Refer to frame 52 for replacement.
Note: Always take care when handling the fan, in order to
preserve the balance of the impeller.
10 Check the venturi G for cl eaness.
G
11 Re --- assemble in reverse order.
To correctly connect the venturi device to the air pressure
switch, refer to the following illustration.
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SERVICING
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