Recommended Power Cables - Viessmann VITOCAL 222-S Installation And Service Instructions Manual

Preparing for installation
Requirements regarding on-site connections
Pos. Sym- Meaning
bol
Liquid line
F
Hot gas line
G
H Heating water flow
Heating water return
K
1. Prepare the connections on the heating water and
the DHW side.
Flush the heating system.
Cable lengths in the internal/external unit plus wall clearance
Cables
Power cables
Heat pump control unit 230 V~
■
Compressor 230 V~/400 V~
■
Other connecting cables
230 V~, e.g. for circulation pumps
■
< 42 V, e.g. for sensors
■
BUS cable for internal/external unit
12 V
■
43 V
■

Recommended power cables

Internal unit
Type AWT/AWT-AC
Heat pump control unit 230 V~
Cable cross-section
Without power-OFF
■
With power-OFF
■
Instantaneous heating water heater
Cable cross-section
400 V~
■
230 V~
■
Max. cable length
8
(cont.)
Connection to the internal unit
Type AWT/AWT-AC Pipe
221.A04
221.A05 to A13
221.B10 to B16
221.A04
221.A05 to A13
221.B10 to B16
2. Prepare the electrical connections.
Internal unit
2.0 m
2.0 m
2.0 m
2.5 m
2.5 m
221.A04 to A13, 221.B10 to B16
UNF thread
7
6 mm
(Reducer
x ⁷⁄₁₆ supplied)
⅝
10 mm
10 mm
12 mm
(Reducer
x supplied)
⅞ ¾
16 mm
16 mm
Cu 28 x 1 mm
Cu 28 x 1 mm
External unit
—
3 x 1.5 mm
5 x 1.5 mm
5 x 2.5 mm
7 x 2.5 mm
⅝
⅝
⅝
⅞
⅞
⅞
—
1.5 m
—
—
1.5 m
1.5 m
2
2
2
2
25 m