B Control Pcb - Vaillant VWL 57/5 IS Operating, Installation And Maintenance Instructions

Appendix
B Control PCB
25
24
23
22
21
20
p
19
18
17
1 Control PCB
2 [X51] Display edge connector
3 [X29] eBUS bus connection for the installed system
control
4 [X24] Coding resistor 3
5 [X24] Coding resistor 2
6 [X41] Edge connector (outdoor temperature sensor,
DCF, system temperature sensor, multi-function
input)
7 [X106/S20] Limit thermostat
8 [X106/S21] ESCO contact
9 [X106/BUS] eBUS bus connection (outdoor unit,
VRC 700, VR 70 / VR 71 )
10 [X16] Internal heating pump
11 [X15] Internal prioritising diverter valve for heating
circuit/cylinder charging
12 [X11] Multi-function output 2: Domestic hot water
circulation pump
44
2
1
6 5 4
X21
9 18
8 17
7 16
6 15
5 14
4 13
3 12
2 11
1 10
X22
10 20
9 19
8 18
7 17
6 16
5 15
4 14
3 13
2 12
1 11
X28
6 12
5 11
12
4 10
3 9
2 8
1 7
3
1
2
3 2 1
X24
9 1
10 2
11 3
12 4
13 5
6
FB
14 6
AF
5
15 7
RF
4
16 8
DCF
3
0
2
X41
0
1
6
S20
5
X100 /
4
X106
S21
3
2
1
BUS
1
2
X29
L
3
N
2
X16
1
L
4
S
3
N
2
X15
1
L
3
N
2
X11
1
L
3
N
2
X13
1
L
4
S
3
N
2
X14
1
L
4
N
3
X1
2
1
13 [X13] Multi-function output 1
14 [X14] Multi-function output: External back-up
heater/external prioritising diverter valve
15 [X1] 230 V supply for control PCB
16 Earth wire for the power supply PCB
17 [X28] Data connection to the power supply PCB
18 [X22] Immersion heater flow temperature sensor
19 [X22] Heating pump signal
20 [X22] Pressure sensor
21 [X22] Building circuit flow temperature sensor
22 [X22] Building circuit return temperature sensor
23 [X22] Domestic hot water cylinder temperature
sensor
24 [X21] Condenser outlet temperature sensor (EEV
outlet)
25 [X21] Condenser inlet temperature sensor
Installation and maintenance instructions Hydraulic station 0020257319_02
4
5
6
7
8
-
eBUS 9
+
10
M 11
12
13
14
3
15
16