Appendix - Vaillant VWZ MEH 61 Installation Instructions And Instructions For Use

APPENDIX

10 Appendix
1
2
3 5 6
4
1 2
EVU
1 Temperature sensor
2 Pressure sensor
3 Pressure sensor wiring
harness
4 Temperature sensor
wiring harness
5 EVU contact
6 Multifunction input
16
7 8 9 10
1 2 DCF AF 1 2 1 2 -
ME DCF/AF SP1 VF1 BUS
19 20
7 DCF receiver with
external temperature
sensor
8 Cylinder sensor
9 Flow sensor
10 VRC 470 controller
11 Resistance heater box
N L1 L2
11
400V~
12 13
+ 2 1 N 2 1 N
ZH UV1
X51
21
12 Resistance heater relay
control wiring harness (*)
13 Three-way valve wiring
harness (*)
14 Three-way valve
15 Multifunction output 2
16 Multifunction output 1
17 230V OUT
Installation instructions and instructions for use VWZ MEH 61 0020166663_03
02 01
N 1 2
L3
14
15 16 17 18
L N L N L N
MA2 MA1 230V~
18 230V IN (*)
19 Main circuit board
20 Card interface wiring
harness
21 Interface card 1
(*) delivered pre-cabled
L N
230V~