Viessmann Vitocal 350-A Installation And Service Instructions Manual page 73

Electrical connections in the control panel
1. Type AWH-I:
Route the 230 V~ cables through one
cable entry, and the LV cable through
the other cable entry in the l.h. or r.h.
side panel.
Type AWH-O:
Cut one entry in the sealing mat for
the 230 V~ cables and a second entry
for the LV cable. Route the cables
from below through the sealing mat.
2. Route the cables through the pre-fit-
ted retainers. Secure the LV cable
and 230 V~ cables separately.
3. Secure the cables below the front
edge of the control panel with a loop
(see previous diagram) to the cable
bracket.
Installation sequence
(cont.)
4. Push the connecting cable (LV cable
< 42 V and control cable 230 V~)
from the heat pump control unit into
the corresponding plug-in connector
on the distributor PCB in the control
panel.
5. Route 400 V~ power cable through
cable entry and apply strain relief.
Carry out the power connection
according to page 104.
Note
The 400 V~ power connection is pro-
tected against accidental contact with
a contact shield. This contact shield
can be sealed for power-OFF (if
required) (see page 110).
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