Vaillant geoTHERM Installation Instructions Manual page 124

17 Appendix
Electrical circuit diagram - VWS
High-pressure
Pressure sensor
Heating circuit
brown
grey
black
Fuse
T4A/250 V
white
white
17.3 Appendix, Electrical circuit diagram VWS 220/2 - VWS
300/2
124
blue
grey
black
orange
orange
brown
blue
yellow-green
brown
blue
yellow-green
black
blue
brown
grey
black
blue
brown
grey
black
blue
brown
grey
black
blue
Pressure sensor
sensor
Brine circuit
Low-pressure
sensor
Pressure
sensors
black
black
grey
L1
blue
L2
red
L3
black
orange
orange
brown
Fuse
yellow-green
T4A/250 V
brown
blue
yellow-green
brown
blue
yellow-green
brown
blue
yellow-green
L
N
PE
black
black
grey
brown
black
orange
black
grey
brown
orange
white
black
grey
brown
white
yellow
black
grey
brown
yellow
L
N
PE
L1
Installation instructions geoTHERM 0020051574_04
black
black
black
grey
brown
yellow-green
black
grey
brown
black
grey
brown
white
black
grey
brown
black
orange
brown
L
blue
N
yellow-green
PE
brown
L3
L2
L1
PE