Viessmann Vitocal 242-S, Инструкция по установке и обслуживанию

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9
Cable lengths in the internal/external unit plus wall clearance
Cables
Internal unit External unit
Power cables:
Heat pump control unit (230 V~) 2.0 m –
Compressor (230 V~) – 1.5 m
Other connecting cables:
230 V~, e.g. for pumps
2.0 m –
< 42 V, e.g. for sensors 2.0 m –
Internal/external unit connecting cable:
12 V BUS
2.5 m 1.5 m
43 V BUS 2.5 m 1.5 m
Recommended power cables
Vitocal 242-S, type AWT-AC
241.A04 241.A07 241.A10 241.A13
External unit (compressor)
230 V~
Cable cross-section
3 x 2.5 mm
2
3 x 2.5 mm
2
3 x 2.5 mm
2
3 x 4.0 mm
2
Max. cable length 29 m 25 m 20 m 20 m
or or
Cable cross-section – – 3 x 4.0 mm
2 3 x 6.0 mm 2
Max. cable length – – 32 m 30 m
Heat pump control unit (inter-
nal unit) 230 V~
Cable cross-section
■ Without power-OFF contact
3 x 1.5 mm 2 3 x 1.5 mm 2 3 x 1.5 mm 2 3 x 1.5 mm 2
■ With power-OFF contact
5 x 1.5 mm
2
5 x 1.5 mm
2
5 x 1.5 mm
2
5 x 1.5 mm
2
Instantaneous heating water
heater
Cable cross-section
■ 400 V~
5 x 2.5 mm
2
5 x 2.5 mm
2
5 x 2.5 mm
2
5 x 2.5 mm
2
■ 230 V~
7 x 2.5 mm
2
7 x 2.5 mm
2
7 x 2.5 mm
2
7 x 2.5 mm
2
Max. cable length 25 m 25 m 25 m 25 m
Overview of possible system schemes
The following table provides an overview
of
all possible system schemes.
Preparing for installation
Requirements regarding on-site connections
(cont.)
5623 661 GB
Installation