28
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Air in the system impairs the efficiency of the solar
heating system considerably. For this reason, there must
be sufficient venting points in every solar circuit.
>
Select one of the following venting methods in relation
to the filling type of the solar circuit as per
Tab. 6.3:
– Only for flat collectors: Venting via the vent opening
(
¬
Fig. 6.1
)
– Venting via an air separator system (
¬
Fig. 6.2
)
Vent opening (only for flat collectors)
1
2
Fig. 6.1 Plug with vent opening for flat collectors
Key
1 Plug
2 Vent
opening
The vent opening enables the venting of the solar circuit
during filling and flushing, i.e. during commissioning or
maintenance.
>
For flat collectors, install a plug with a vent opening at
the highest point.
i
Whilst the solar heating system is being oper-
ated, the vent opening must be closed to pre-
vent the loss of fluid at times of stagnation.
Automatic air separator system
Fig. 6.2 Automatic air separator system
You can use the Vaillant automatic air separator system
instead of an automatic air vent.
An air separator system vents the solar circuit com-
pletely automatically, both during filling and flushing and
continuously whilst the solar heating system is being
operated.
i
You must install an air separator system in
an area where no steam will escape, preferably
in the return line between the solar pump unit
and the solar cylinder.
>
Install the Vaillant automatic air separator system in
accordance with the corresponding assembly instruc-
tions.
6 Installation
