Overview Of Possible System Schemes - Viessmann VITOCAL 300-G Installation And Service Instructions Manual

Installation
(cont.)
Line lengths in the heat pump plus wall clearance:
Type
Heat pump control unit
power supply (230 V~)
Compressor power supply
(400 V~)
Additional power cables
Recommended power cables:
Type
BW 121
BWS 121
BW 129
BWS 129
BW 145
BWS 145
Note
An instantaneous heating water heater
(on site) can only be installed outside
the heat pump (on site). The flow tem-
perature sensor system must be instal-
led in the direction of flow downstream of
the instantaneous heating water heater.

Overview of possible system schemes

The following table provides an overview
of all possible system schemes.
BW
1.0 m
1.0 m
1.5 m
Heat pump con-
trol unit (230 V~)
2
3 x 1.5 mm
—
3 x 1.5 mm 2
—
2
3 x 1.5 mm
—
Preparing for installation
BWS
A connecting cable is used
for the power supply
1.0 m
Connecting cable
Compressor (400 V~)
2
4 x 2.5 mm
2
4 x 2.5 mm
4 x 4.0 mm 2
2
4 x 4.0 mm
2
4 x 6.0 mm
4 x 6.0 mm 2
Max. cable length
50 m
50 m
50 m
50 m
40 m
40 m
15