Connecting External Components - Vaillant geoTHERM VWS Installation Instructions Manual

6.4.4 Connecting external components

A1
L1 L2
ABB
T1 T2
Fig. 6.5 Connecting external components
Key to Fig. 6.5
p
Brine Switch
3-way valve with solenoid
Should you wish to connect an external brine pressure
switch to the heat pump, use the terminals (1) for this.
Installation instructions geoTHERM VWS 0020046310_01
PE N L
A2
L3
N L
N L
A12-30-01
T3
N N L L L N
Only if the VPA multi-cylinder or some other multi-
cylinder is installed
• Connect the external 3-way valve for the multi-cylin-
der to the terminals (2).
h Note!
When using an external 3-way valve, the
proper functioning of the heat pump is
only assured if the valve supplied with
the VPA Multi-cylinder is used.
Electrical installation 6
1 2
p
L L
S S B B A Z N
29