7
Installation instructions geoTHERM VWS/VWW 0020057444_01
These different temperatures are produced in the cool-
ant circuit by means of a compressor (
2
) and an expan-
sion valve (
4
), which are situated between the evapora-
tor and the condenser. The coolant flows in vapour form
from the evaporator into the compressor, where it is
compressed. This causes the pressure and temperature
of the coolant vapour to rise sharply. After this process
it flows through the condenser, where it releases its
heat to the heating water by condensation. It flows as a
liquid to the expansion valve, where it expands signifi-
cantly and in so doing loses much of its pressure and
temperature. This temperature is now lower than that
of the brine which flows through the evaporator. The
coolant can thus take up more heat in the evaporator,
turning into vapour in the process and flowing to the
compressor. The cycle starts again.
If required, the electric auxiliary heating can be
switched in by means of the integrated controller.
To prevent the formation of condensate in the interior
of the unit, the pipes of the heat source circuit and the
coolant circuit are insulated. Should condensate appear,
however, it is collected in a pan inside the unit (see
Fig. 2.7) and fed away underneath it. Drop formation
under the unit is thus possible.
2.3
Design of the heat pump
The Vaillant geoTHERM heat pump is available in the
versions listed below. The versions differ principally in
their output.
Type name
Heating output (kW)
Brine/Water Heat Pumps (B0/W35)
VWS 61/2
5.9
VWS 81/2
8.0
VWS 101/2
10.4
VWS 141/2
13.8
VWS 171/2
17.3
Water/Water Heat Pumps (W10/W35)
VWW 61/2
8.2
VWW 81/2
11.6
VWW 101/2
13.9
VWW 141/2
19.6
VWW 171/2
24.3
Table 2.2 Type summary
You can read the type designation of the heat pump
from the sticker (see Fig. 2.4, Item
1
) on the pillar frame.
The heat pump is designed to implement all current
electrical supply tariffs.
2
3
1
Fig. 2.4 Front view VWS/VWW
Key to Fig. 2.4
1 Label with heat pump type designation
2 Operating
panel
3 vrnetDIALOG mounting plate (behind the pillar cladding)
Description of the device 2
Summary of Contents for 0010002778
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