Viessmann AC-Box - Connection and Wiring Dia

32
L1
N
A
aMG
K1
N
230V
X3.8
X3.9
=
~
24V
X4.1
X4.2
X4.8
X4.9
X4.7
B
C
D
E
F
G
H
K
L
N
~
~
M
1~
2
M
1~
1
aMY]
D
aBY]
A
[YA
K
aBY]
B
aBY]
C
aMY]
E
lM]
F
lM]
G
s-]
B
lM]
A
lM]
B
lM]
C
s-]
A
lM]
D
lM]
E
V5 V6 V7 V1 V2 V3 V4
K6
K1
40
K4
K5
Fig.21
Note
Earth connection not shown.
A
Power supply 1/N/PE 230 V/50 Hz
B
Fuse F2 (16 A)
C
Fuse F1 (6.3 A (slow))
D
Contact humidistat signal 24 V–
E
Contact humidistat 24 V– (accessory)
F
Shutdown signal for heat pump 230 V~
G
NC signal 230 V~
H
AC signal 230 V~
K
Additional frost stat (accessories): Remove jumper
when connecting.
L
Frost stat connected at the factory
Connection and wiring diagram
Connection and wiring diagram
5675 895 GB
Appendix