Viessmann Vitocal 300-G Installation And Service Instructions Manual page 72

Installation sequence
Electrical connections
A Connection area, heat pump stage
2 (type BWS 301.A)
B Connecting cables, LV < 42 V:
Overview of the electrical connections of the heat pump control
unit (type BW 301.A and BWC 301.A)
Note
■ Route 230 V~ cables and LV cables
separately and bundle them tightly
together at the terminals. This ensures
that, in case of failure, for example
when detaching a wire, the wires can-
not drift into the adjacent voltage area.
■ Strip the insulation as close to the ter-
minals as possible.
■ If two components are connected to
the same terminal, press both wires
together into a single wire ferrule.
72
(cont.)
■ With plugs aJB and aVG for the
connection area for heat pump
stage 2 (type BWS 301.A).
■ With plugs "X6" and aVG for the
connection area for heat pump
stage 1 (type BW 301.A).
C 230 V~ connecting cables:
■ With plugs without ID for the con-
nection area for heat pump stage
2 (type BWS 301.A).
■ With plugs "X300" and aBH for the
connection area for heat pump
stage 1 (type BW 301.A).
D Connection area, heat pump stage
1 (type BW 301.A)