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~/400 V~)
–
1.5 m
Other connecting cables:
■ 230 V~, e.g. for circulation 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
Type AWT-AC
221.A04 to A13, B10, B13
Heat pump control unit
(internal unit) 230 V~
Cable cross-section
■ Without power-OFF
3 x 1.5 mm
2
■ With power-OFF
5 x 1.5 mm
2
Instantaneous heating water heater
Cable cross-section
■ 400 V~
5 x 2.5 mm
2
■ 230 V~
7 x 2.5 mm
2
Max. cable length
25 m
Type AWT-AC
221.A04
221.A07
221.A10
221.A13
External unit 230 V~
(compres-
sor)
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
Type AWT-AC
221.B10
221.B13
External unit 400 V~
(compressor)
Cable cross-section
5 x 2.5 mm
2
5 x 2.5 mm
2
Max. cable length
30 m
30 m
Preparing for installation
Requirements regarding on-site connections
(cont.)
5782 201 GB
Installation
