Connection And Wiring Dia - Viessmann AC-Box Installation And Service Instructions For Contractors

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