Vaillant geoTHERM Installation Instructions

Electrical installation
Installation instructions geoTHERM 0020051574_04 55
7
7.3.8 Connecting external brine switch (VWS
only)
1 2 N PEL3 L2 L1NPEL3 L2 L1NPE LNPELNPEL3N
PE L2 L1L3N
SS
1
p
2
7.16 Connecting an external brine switch (VWS only)
Key
p
Brine Switch
In some cases (for example, in drinking water protection
areas), local authorities prescribe how an external brine
switch must be installed (VWS only) and the refrigerant cir-
cuit is switched off if the pressure in the brine circuit
exceeds a certain level.
If there is a lock-out due to the brine switch, the controller
displays the error message 91 (¬Ch.11.5).
> Remove the bypass pipework (dashed line) (2).
> Connect an external brine switch to the terminals (1).

Vaillant geoTHERM Specifications

General

Brand	Vaillant
Model	geoTHERM
Category	Heat Pump
Language	English