Installation instructions geoTHERM VWS/VWW 0020051574_01
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6.4.2 Dual circuit feed (electrical plan 2 and 3)
S
S
L3 L2 L1
N
PE
L3 L2 L1
N
PE
1
2 N PE
L
N
PE
PE
L2 L1
L
N
PE
L3
N
L3
N
400 V / 50 Hz
230 V / 50 Hz
400 V
50 Hz
400 V
AC1 3 x 13 A
U
max
= 230 V
I
max
= 2 A
U
max
= 230 V
I
max
= 2 A
6
3
4
1
2
+
VWS 220/2-VWS 460/2
5
8
Fig. 6.4 Dual circuit feed, VWS
L3 L2 L1
N
PE
L3 L2 L1
N
PE
L
N
L3 L2 L1
N
PE
PE
PE
L2 L1
L
N
PE
L3
N
L3
N
7
4
VWW 220/2-VWW 460/2
400 V
50 Hz
230 V
50 Hz
400 V
50 Hz
400 V
AC1 3 x 13 A
6
5
3
1
2
+
U
max
= 400V
I
max
= 5 A
U
max
= 400V
I
max
= 5 A, VWW 220...300/2
I
max
= 8,5 A, VWW 380...460/2
Fig. 6.5 Dual circuit feed, VWW
Key to Figs. 6.4 and 6.5
Pump
Compressor
Controller
External auxiliary heating
Heat source circuit
Mixer valve
1 Connection of mains supply for ext. auxiliary heater
2 Connection of external auxiliary heating
3 Connection of mains supply, low tariff
4 Bypass
lines
5 Connection of mains supply, high tariff
6 Circulation pump, heating circuit
7 Connection of immersion pump, heat source circuit
8 Connection of brine mixer valve for external cooling system
With the dual circuit feed the heat pump is operated
using two electricity tariffs (two meters). This can be
the heat pump tariff or the special tariff. A permanent
supply (
4
) for the
secondary consumers (circulation
pumps, controller, etc.)
must be ensured via a meter.
The
low tariff supply (2) for the compressor
(and pos-
sibly the auxiliary heating) is provided via a second
6 Electrical installation
