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Operating the Appliance
6 720 611 138 GB (03.11)
3Operating the Appliance
3.1 Preparation
Turn on the gas cock (172).
B Press in the handle and turn it anti-clockwise as far as the stop
(when handle is in line with direction of flow, the cock is open).
Central heating system valves (170)
B Using a spanner, turn square nut until groove is in line with
direction of flow (see detail).
Groove at right angles to direction of flow = off.
170
172
6 720 611 138-02.1O
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