Draining the installation, 5 draining the installation – DE DIETRICH VIVADENS MCR-P 24, MCR-P .._.. MI User Manual
Page 24
8. Wait until water comes out of the bleed valve and then close the
bleed connection.
CAUTION
The water may still be hot.
9. After venting, check whether the pressure in the installation is still
sufficient. Add water to the installation if necessary.
10.Switch on the boiler. A vent cycle of a duration of around 3 minutes
is carried out automatically.
11.Set the room thermostat or the regulator.
5.5
Draining the installation
It may become necessary to empty the water from the heating system
when the radiators have to be replaced, should there be a major water
leak or a risk of frost. To do this, proceed as follows:
1. Open the valves on all radiators connected to the heating system.
2. Switch off the boiler electrical power supply.
T000218-A
T000228-A
1,5 ... 2 bar
T000183-A
1
2
3
4
T000181-B
5. Checking and maintenance
MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI
23
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