Viessmann VITOCAL 300-G PRO Installation And Service Instructions Manual page 73

Power supply
(cont.)
Information on the compressor power
supply (load circuit)
■
!
Please note
Incorrect phase sequence can
cause damage to the appli-
ance.
Control circuit power supply (230 V~) and power circuit (400 V~)
Make connection in accordance with the
separate "Connection and wiring dia-
gram".
Load circuit (400 V~) on site, control circuit (230 V~) fully wired at the factory
Type Cable cross-section
BW 301.A090
5 x 25 mm
BW 302.A090
WW 301.A125
WW 302.A125
BW 301.A120
5 x 35 mm
BW 302.A120
WW 301.A155
WW 302.A155
BW 302.A150
5 x 50 mm
WW 302.A200
BW 302.A180
5 x 70 mm
WW 302.A250
With cable lug for M8
BW 302.A250
5 x 95 mm
WW 302.A300
With cable lug for M8
■ The compressor power MCB/fuses
must have C characteristics.
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 up to 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).
2
2
2
2
2
Installation sequence
Make the compressor power
supply only in the phase
sequence specified (see termi-
nals) with a clockwise rotating
field.
Max. cable length
40 m
40 m
40 m
40 m
40 m
73