Overview Of The Heat Pump Control Unit Electrical Connections - Viessmann Vitocal 222-G Installation And Service Instructions Manual

Electrical connections

Overview of the heat pump control unit electrical connections

A
sYA sYS
D
400 V / 50 Hz
230 V /
400 V /
50 Hz 50 Hz
230 V /
50 Hz
D
F
Fig. 19
A Expansion PCB on main PCB: connect nothing on
site.
Main PCB: see page 24.
B
F3 Fuse 6.3 A (slow)
Controller and sensor PCB: see page 27.
C
Mains terminals: see page 30.
D
Luster terminals: see page 26.
E
F1 Fuse 6.3 A (slow)
X1 Terminals for earth conductors of all associ-
ated system components
X2 Terminals for neutral conductors of all associ-
ated system components
Switching module, instantaneous heating water
F
heater: see page 30.
(cont.)
B
sVA
J3
J4
X18
F23
F26
F3
X3 X2
N
1
1
3
4
6
7
8
1
9
E
18
F1
X31
a:C]
B
a:C]
A
C
X25
F20 F12 F4
F0
F21 F13 F27
X24
F14 F7 F8
F16 F11 F6
aVG
X15
X1
?
1PE
Installation sequence
23