Requirements Of The Heating Circuit; Scope Of Delivery - Vaillant geoTHERM VWS Installation Instructions Manual

4.6

Requirements of the heating circuit

The heat pump is only suitable for connection to a
closed central heating installation. To ensure trouble-
free operation, the central heating installation must
have been installed by authorised technical personnel in
compliance with the applicable regulations.
A heat pump is suited to low temperature heating sys-
tems. The system must therefore be designed for low
flow temperatures (ideally around 30 to 35 °C). Further-
more, it must be ensured that power company outages
are bridged over.
EN 12828 requires the following the heating system in-
stallation:
– a filling valve, in order to fill the heating system with
water or be able to drain the water,
– a diaphragm expansion vessel in the return line of the
heating circuit,
– an overpressure safety valve (opening pressure 3 bar)
with pressure gauge (safety group) in the flow line of
the heating circuit, immediately after the appliance,
– an air/dirt separator in the return line of the heating
circuit.
To avoid energy losses and protect against freezing,
thermal insulation must be installed on all supply lines.
The lines must be dirt free - so flush these through tho-
roughly before filling, if necessary.
a Caution!
Risk of damage!
Do not add any antifreeze or corrosion
protection agents to the heating water,
as seals and other components can be
damaged as a result and this can lead to
water leaks.
In hydraulic installations that are predominantly equip-
ped with thermostatically or electrically controlled val-
ves, it is necessary to ensure a constant, adequate flow
through the heat pump. Regardless of the choice of hea-
ting system, the nominal flow rate of heating water
must be ensured. This is guaranteed by using a professi-
onally installed buffer cylinder.
Installation instructions geoTHERM VWS 0020046310_01
Assembly and installation 4
4.7

Scope of delivery

14
13
12
11
Fig. 4.4 Checking the supplied material
For key, see Table 4.2.
The heat pump is delivered on a pallet in two packing
units.
• Check the heat pump and the separately packaged
operating console for any transport damage.
1
2
3
4
5
6
7
8
9
10
15