Overview Of Electrical Connections - Viessmann VITOCAL 300-G Installation And Service Instructions For Contractors

Electrical connection

Overview of electrical connections

X31
193D
G
Fig. 17
Luster terminals (connections N and
A
X1 Terminals for earth conductors of all associ-
ated system components
X2 Terminals for neutral conductors of all associ-
ated system components
Mains terminals for compressor and instantaneous
B
heating water heater: See page 40.
Luster terminals (message and safety connec-
C
tions): See page 33.
(cont.)
A
X2
X1
241
F3
F E
):
B C
X3
X40
F1
224 224
222
Mains terminals for heat pump control unit: See
D
page 40.
F1 Fuse 6.3 A (slow)
Expansion PCB on main PCB (230 V~ compo-
E
nents): See page 29.
Main PCB (230 V~ components): See page 26.
F
F3 Fuse 2.0 A (slow)
Controller and sensor PCB (extra low voltage
G
(ELV) connections): See page 35.
Installation sequence
D
25