Installing The Programming Unit (Type Bw 301.A) - Viessmann Vitocal 300-G Series Installation And Service Instructions Manual

Electrical connection
Required cable lengths in the heat pump plus distance to wall
Type
Heat pump control unit power supply 230 V~
Compressor power supply 400 V~
Additional connecting cables
Recommended power cables
Power supply
Compressor 400 V~
Heat pump control unit
230 V~

Installing the programming unit (type BW 301.A)

1.
3.
Fig. 8
(cont.)
BW 301.A21
■
BWS 301.A21
BW 301.A29
■
BWS 301.A29
BW 301.A45
■
BWS 301.A45
Without power-OFF
■
With power-OFF
■
BW 301.A
1.0 m
1.0 m
1.5 m
Cable
2
4 x 2.5 mm
2
4 x 4.0 mm
4 x 6.0 mm 2
3 x 1.5 mm 2
2
5 x 1.5 mm
2.
2x
Installation sequence
BWS 301.A
—
1.0 m
—
Max. cable length
50 m
50 m
40 m
40 m
40 m
17