Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 42

Installation sequence
Power supply
(cont.)
External unit power supply 230 V~
Type AWT/AWT-AC
221.A04
C N L ?
A
N L1
?
B
Fig. 39
Wiring chamber, external unit: See page 39.
A
Power supply 230 V/50 Hz
B
Type AWT/AWT-AC
Cable cross-section
Max. cable length
Cable cross-section
Max. cable length
Fuse protection
External unit power supply 400 V~
!
Please note
Incorrect phase sequence can cause damage to
the appliance.
Make the compressor power supply only in the
phase sequence specified (see terminals) with a
clockwise rotating field.
Type AWT/AWT-AC
Cable cross-section
Max. cable length
Fuse protection
42
221.A05/A07
Ni Li N L
COM
? ?
0 0
? N L1
B
Fig. 40
221.A04 221.A05
3 x 2.5 mm 2 3 x 2.5 mm
29 m 25 m
—
—
B20A B20A
Type AWT/AWT-AC 221.B10/B13/B16
C2 C1
Fig. 42
A
B
221.A10/A13
C2 C1
N L
A
A
Fig. 41
221.A07 221.A10
2 3 x 2.5 mm 2 3 x 2.5 mm
25 m
— — 3 x 4.0 mm
— —
B20A
N L ? N L3 L2L1
?
A
? N L3 L2 L1
B
Wiring chamber, external unit: See page 39.
Power supply 400 V/50 Hz
221.B10 221.B13
2
5 x 2.5 mm 5 x 2.5 mm
30 m
B16A
? N L
?
? N L1
B
221.A13
2 3 x 4.0 mm 2
20 m 20 m
or or
2 2
3 x 6.0 mm
32 m 30 m
B20A B32A
221.B16
2 2
5 x 2.5 mm
30 m 30 m
B16A B16A