Overview Of Electrical Connections - Viessmann Vitocal 300-A Installation And Service Instructions Manual

Electrical connections, heat pump controller

Overview of electrical connections

Note
Route 230 V~ cables and LV cables separately and
■
bundle them tightly together at the terminals. This
ensures that, in the event of a fault, e.g. when
detaching a wire, the wires cannot drift into the adja-
cent voltage area.
Strip the insulation as close to the terminals as pos-
■
sible.
■ If 2 components are connected to the same terminal,
press both cores together in a single wire ferrule.
A
X5
X3
X7
X2
X6
X1
Fig. 25
Cross connect PCB: see page 35.
A
F1 MCB/fuse 6.3 A (slow)
B Main PCB: see page 30.
F3 Fuse 6.3 A (slow)
B
F1
sXS sXD sXF
sYA sYS
(cont.)
C
sVA
sXG
X18
F3
Expansion PCB: see page 32.
C
D Controller and sensor PCB: see page 38.
Installation sequence
D
X31 a:C]
B
a:C]
C
F12 F4
F20
F0
J3
F13
J4
F7 F8
F14 X24
F6
F26 F16 F11
aVG
X25
29