Venting The Heating System; Manual Venting; Automatic Venting - DeDietrich Alezio V220 Evolution User Manual

7.4

Venting the heating system

Fig.25 Opening the radiators
Fig.26 Venting the floors
B
A
Fig.27 Powering up
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Note
Filling and venting the installation twice a year should be sufficient
to obtain an adequate hydraulic pressure. If it is often necessary
to top up the installation with water, contact your installer.
It is essential that you vent any air in the domestic hot water tank, the
pipes and the taps to prevent the annoying noises likely to be produced
during heating or when drawing off water.

7.4.1 Manual venting

1. Open the valves on all radiators connected to the heating system.
2. Put the heat pump in shut-down/frost protection mode.
AD-0000181-A
3. Vent the underfloor heating circuits and the radiators. First vent the
lower floors A and then the upper floors B.
Note
The heating pump stops 5 minutes after selection of the shut-
down/frost protection mode. If the outside temperature is lower
than 3°C, the heating pump continues to run.
B
A
MW-M001495-1

7.4.2 Automatic venting

If the parameter
venting cycle when it is switched on.
If the parameter
Automatic venting starts up only if the measured domestic hot water
temperature is lower than 25°C.
Automatic venting takes approximately one minute. It is possible to
manually extend automatic venting to more than one minute.
1. When powering up, the word
( ) simultaneously. An automatic venting cycle begins. The word
2. Press the A and B keys (
cycle.
Caution
After venting, check whether the pressure in the installation is still
sufficient. Add more water to the installation if necessary.
is set to 0, the heat pump runs an automatic
is set to 1, a domestic hot water tank is connected.
stops flashing.
) simultaneously to stop the venting
7 Maintenance
flashes. Press the A and B keys
AWHP-2 MIV-3 V220 23