Emptying The Water Circuit - Beretta NOVELLA 31 RAI Installation Manual

3.10

Emptying the water circuit

- Turn the electricity supply off by switching
the boiler's mains power switch and control
panel switch OFF before starting to empty
Fig. 3.15
the boiler (fig. 3.15)
- make sure that the water circuit shut-off
cocks are closed
- connect a rubber hose to the hose union on
the boiler's drain cock and open the cock
(fig. 3.16).
Fig. 3.16
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