DE DIETRICH INNOVENS MCA 35 - Manual (Page 30)

8. Wait until water comes out of the bleed valve and then close the
bleed connection.
CAUTION
The water may still be hot.
9. Switch on the boiler. A vent cycle of a duration of around 3 minutes
is carried out automatically.
10.After venting, check whether the pressure in the installation is still
sufficient.
If the water pressure is lower than 0,8 bar, more water
should be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1,5 and 2,0 bar).
¼ See chapter: "Filling the system", page 26
11.Set the heating set point.
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.
3. Wait around 10 minutes until the radiators are cold.
T000218-A
1 2
3
4
T000181-B
T000185-A
5. Checking and maintenance MCA 35
29 24/08/2011 - 300024162-001-B