35
Installation instructions geoTHERM VWS/VWW 0020051574_01
Key to Fig. 6.10
3
geoTHERM heat pump, VWS/VWW
5
Domestic hot water cylinder
13
Weather-controlled energy balance controller
16
External sensor/DCF receiver
17
Tap water station
30
Non-return valve
31
Regulating valve
32
Cap valve
33
Dirt trap
42a Expansion
relief
valve
42b
Diaphragm expansion tank
42c
Diaphragm expansion tank, tap water
43
Safety group, water connection
58
Fill and drain valve
KP
Circulation pump, heat pump circuit
CP/SV1 Switching
valve
SP
Cylinder temperature sensor
WQ
Heat source circuit
VF2 Supply
temperature
sensor
ZH
Electric auxiliary heating
ZP
Circulation pump
Optional for hydraulic isolation:
45
Low loss header
HK2-P
Heating circuit pump with control line to the heat pump
The brine pump is only included with VWS.
a
Caution!
Risk of damage!
The electrical auxiliary heating must be
protected on the customer side by a non
self-resetting thermal cut-out that pro-
vides all-pole disconnection.
a
Caution!
Risk of damage!
The heat exchanger in the DHW cylinder
requires an exchanger surface of roughly
1 m
2
per 3-4 kW of heating output by the
heat pump.
h
Note
If it is necessary to isolate the heating
circuit hydraulically, fit a low loss head-
er and an external heating circuit pump
as shown in Fig. 6.10.
h
Note
If you have fitted a low loss header be-
tween the heat pump and the heating
system, the VF2 temperature sensor
must be mounted in the supply line from
the low loss header to the heating sys-
tem.
Electrical installation 6
