51
sERVICINg
Ideal Logic
+
Combi -
Installation and Servicing
66 pUMp AUTOMATIC AIR VENT REpLACEMENT
1.
Refer to Frame 49.
2.
Drain the boiler. Refer to frame 63.
3.
Remove the expansion vessel. Refer to Frame 75.
4.
Firstly, increase access area by disconnecting the 22mm
pipe connection at top of pump chamber and bottom
of heat exchanger and remove pipe Refer to Frame 65
(no’s 5,6 & 7).
5.
The automatic air vent head is retained in the pump
body with a bayonet connection. The air vent head and
float assembly is removed by turning the head anti-
clockwise (viewed from above) and pulling upwards.
6.
Reassembly is the reverse of the above. Ensure the air
vent head ‘o’ ring seal is in place when refitting and the
new ‘o’ ring is fitted to the return pipe top connection.
7.
Ensure the air vent cap is loose.
8.
Refill the boiler. Refer to Frame 29. Check for leaks
around the new air vent joint.
9.
Check the operation of the boiler. Refer to Frames 37-
40.
5
4
67 DhW FLOW TURBINE CARTRIDgE REpLACEMENT
1.
Refer to Frame 49.
2.
Drain the boiler. Refer to Frame 63.
3.
Remove condensate trap/siphon. Refer to
Frame 59.
4.
Remove the DHW flow turbine sensor. Refer
to Frame 62.
5.
Unscrew the top connection to access the
internal part.
6.
Fit the new turbine cartridge.
7.
Refit the turbine flow sensor
8.
Reassemble in reverse order.
9.
Refill the boiler. Refer to Frame 29.
10.
Check operation of the boiler. Refer to
Frames 37-40.
5
7
s
ER
VICIN
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204978-4.indd 51
20/10/2010 14:05:04
