70
pUMp AUTO AIR VENT REpLACEMENT
71
DhW FLOW TURBINE sENsOR REpLACEMENT
72
DIVERTER VALVE INTERNAL CARTRIDgE REpLACEMENT
1. Refer to Frames 45 & 46.
2. Refer to Frame 53.
3. Close the isolating service valves and drain the (CH)
boiler. Refer to Frame 67.
4. Remove the burner & Fan assembly. Refer to Frame 47.
5. Remove return pipe connected at top of pump and heat
exchanger.
6. The auto air vent is retained in the pump body with a
bayonet connection. The air vent and oat assembly is
removed by turning the head anti-clockwise (viewed from
above) and pulling upwards.
7. Reassemble in reverse order.
8. Ensure the air vent head o ring seal is in place when
retting and the seal is in place at the pump outlet
connection.
9. Rell the CH system. Refer to Frame 67.
10. Loosen the cap of the air vent.
11. Check the operation of the boiler. Refer to Frames 33-36.
1. Refer to Frames 45 & 46.
2. Refer to Frame 53.
3. Lift off the ow turbine sensor plastic retaining clip.
4. Unplug the electrical connection and transfer to new
turbine sensor.
5. Reassemble in reverse order.
6. Check operation of the boiler. Refer to
Frames 33-36.
1. Refer to Frames 45 & 46.
2. Refer to Frame 53.
3. Close the isolating service valves and drain the
(CH) boiler. Refer to Frame 67.
4. Remove the Condense trap. Refer to Frame 50.
5. Disconnect the diverter valve head cable
6. Remove the diverter head retaining clip and
withdraw the diverter head.
7. Using a spanner, unscrew the valve assembly
from the body and lift out.
8. Reassemble in reverse order.
9. Rell the CH system. Refer to Frame 67.
10. Check the operation of the boiler. Refer to
Frames 33-36.
5
3
4
7
6
sERVICINg
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