Overview Of Electrical Connections - Viessmann BW 35 .AHT PW Series Installation And Service Instructions Manual

Installation sequence
Electrical connections
Fig. 28
1. Route LV leads through "< 50 V" entry to heat
pump wiring chamber.
2. Route 230 V cables through "230 V" entry to heat
pump wiring chamber.
Secure 230 V cables with cable ties.
Note
Route LV leads and 230 V cables far apart.

Overview of electrical connections

Note
■ Route 230 V~ cables and LV leads separately and
bundle them tightly together at the terminals. This
ensures that, in the event of a fault, e.g. if a wire
becomes detached, the wires cannot drift into the
adjacent voltage area.
Strip the cables of a small amount of insulation close
■
to the terminals.
■ If 2 components are connected to the same terminal,
press both cores together in a single wire ferrule.
34
(cont.)
400 V~
230 V~
<50 V
3. Route power cable for compressor through
"400 V~" entry to heat pump wiring chamber.
Always secure the power cable with strain relief fit-
tings.
Note
On-site strain relief fittings are required.
For power supply, see page 42 onwards.