Overview Of Possible System Schemes - Viessmann Vitocal 350-G Installation And Service Instructions Manual

Preparing for installation
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 351.A18
BWS 351.A18
Note
An instantaneous heating water heater
(on site) can only be installed outside
the heat pump. The flow temperature
sensor system must be installed 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.
12
BW 351.A18
1.0 m
1.0 m
1.5 m
Heat pump con-
trol unit (230 V~)
Cable cross-sec-
tion
2
3 x 1.5 mm
2
(5 x 1.5 mm with
power-OFF)
—
BWS 351.A18
A connecting cable is used
for the power supply
1.0 m
Connecting cable
Compressor (400 V~)
Cable cross-sec-
tion
2
4 x 4.0 mm
4 x 4.0 mm 2
Selected system schemes are explained
using system examples (see from
page 42).
Max. cable length
50 m
50 m