Replacing The Non-Return Valve; Finalising Work - DeDietrich AMC 15 Installation And Service Manual

10 Maintenance
Fig.101

Replacing the non-return valve

4
2x
1
3
230V
X91
2
5
6
2x
108 AMC
10.3.6
Replace the non-return valve if it is defective or if the service kit includes
one. To do this, proceed as follows:
1. Remove the air inlet flue on the venturi.
2. Loosen the gland on the gas valve unit.
3. Disconnect the 2 plugs located under the fan.
4. Release the 2 clips holding the fan/mixing elbow unit in place on the
heat exchanger.
5. Remove the fan together with the mixing elbow unit.
6. Replace the non-return valve.
7. Reassemble the unit in reverse order.
AD-0001245-03
10.3.7
1. Fit all removed parts in the reverse order.
Caution
During inspection and maintenance operations, always replace all
gaskets on the parts removed.
2. Fill the siphon with water.
3. Put the siphon back in place.
4. Carefully open the water tap.
Replacing the non-return valve

Finalising work

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