![Viessmann VITOCAL 300-G PRO Type BW 2150 Installation And Service Instructions Manual Download Page 69](http://html1.mh-extra.com/html/viessmann/vitocal-300-g-pro-type-bw-2150/vitocal-300-g-pro-type-bw-2150_installation-and-service-instructions-manual_1017894069.webp)
69
Information regarding the compres-
sor power supply
(power circuit)
■
!
Please note
An incorrect phase sequence
can cause damage to the appli-
ance.
Make the compressor power
supply
only
in the phase
sequence specified (see termi-
nal) with a
clockwise
rotating
field.
■ The compressor power fuses must
have C characteristics.
Control circuit power supply (230 V~) and power circuit (400 V~)
Make connection in accordance with the
separate "connection and wiring dia-
gram".
Recommended power cables
Note
■ The specified cross-sections and max.
cable lengths apply to routing in empty
pipes or ducts at an ambient tempera-
ture of max. 25 °C.
■ In the case of routing in the vicinity of
heating pipes or encapsulated routing,
the cross-sections and max. cable
lengths must be recalculated (on site).
Load circuit (400 V~) on site, control circuit (230 V~) wired at the factory
Type
Cable cross-section
Max. cable length
BW 190
WW 1125
5 x 25 mm
2
40 m
BW 1120
WW 1155
5 x 35 mm
2
40 m
BW 2150
WW 2200
5 x 50 mm
2
40 m
BW 2180
WW 2250
5 x 70 mm
2
With cable terminal for M8
40 m
BW 2250
WW 2300
5 x 95 mm
2
With cable terminal for M8
40 m
Installation sequence
Power supply
(cont.)
5772 458 GB
Installation