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6.2Draining vented installations
Some service activities require the appliance to be drained. The procedure is as follows:
1.Shut down the appliance by setting the ON/OFF switch on the control panel to position 0.
2.Isolate the water heater from the power supply by putting the isolator between the appliance and the mains power supply to position 0.
3.Shut off the gas supply (10).
4.Close the stop valve (11) in the hot water pipe.
5.Close the stop valve (4) between the cold water head tank and the cold water inlet.
6.Open the drain valve (9).
7.Bleed the appliance (or installation) so that it drains completely.
Instruction manual BFM | 47 |
