Viessmann AC-Box Installation And Service Instructions For Contractors page 17

Electrical connection
A
X1 X3
GNYE
C
BU
BN
1 2
175
Fig.9
Note
Plug aMG is plugged into the AC-Box PCB at the fac-
tory.
Cross connect PCB inside the heat pump control
A
unit
X1 Earth conductor terminal strip
X3 Terminal strip for message and safety connec-
tion
AC-Box PCB
B
"SC" connecting cable
C
(cont.)
12
11
10
9 L´
L
8
7
6
5
4
3
2
1
B
Installation sequence
17