Electrical installation 6
0020250181_00 geoTHERM Installation and maintenance instructions
21
6.4
Wiring diagrams
p
High-pressure switch
X23
X21
X22
X25
X24
X20
L N
230V~
24=
S20
24=
X1
X1 1
L N
230V~
X16
L N
230V~
X13
L N
230V~
C
X15
O N
230V~
X700
L L
230V~
X14
L N
230V~
X100
- +
BUS
S21
1
1
X20
8
7
2
1
3
4
5
6
1 2 5 6 7 8
4
3
Building
circuit pump
L N
Electronic expansion valve
M
Environ-
N
L
X2
Orange
Yellow
Grey
Black
Red
mental
circuit pump
GND
PWM1
PWM2
GND
SSM1
SSM2
PWM2
PWM1
GND & SSM 1
SSM2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
10
1
2
3
4
5
6
7
8
9
10
1 2
3 4
1 2
9 1 0
3 4
11 12
5 6
13 14
7 8
15 16
1 2
5 6
3 4
7 8
Relay PCB
Main PCB
X700
L L
230V~
C
X70
R N
230V~
X1C
L N
230V~
X19
L L
230V~
X17
L N
230V~
X1A
L N
230V~
X1B
L N
230V~
L
X18
L
230V~
S R C
Compressor
Operating
capacitor
M
B A N
O
S
52
230V~
L
N
X12
F1
X51
X40
X30
Yellow
Blue
Brown
Red
M
3-way mixer
Relay PCB
X700
Compressor safety relay
X70
Compressor
X1A
—
X1B
Power supply
X1C
Main PCB mains connection transfer
X17
Cooling active signal, thermostatic radiator valve
switch
X18
—
X19
—
X20
Main PCB control line
