Heat pump interface (VWZ AI)
For more bespoke systems where the hydraulic module and the uniTOWER are unsuitable, the heat pump interface must be fitted
with all the hydraulic components installed separately.
A
230 V~
230 V~
MA1
MA2
UV1
PE N
L
PE N
L
PE N
L
PE N
L
PE N Auf Zu
1. Fixing points
Installer's Quick Guide - aroTHERM plus 11/2020
ZH
Bus
VF1
SP1
DCF/AF
ME
EVU
PE N 1
2
+ -
2 1
2 1
AF
DCF
2 1
2 1
3
B
1. LED
2. Diagnostic socket
(future use)
3. Identification plate
Heat
1
pump
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System
control
VWZ AI
eBUS
cable
230 V~
(on site)
1
2
25
25