Connecting The Secondary Circuit - Viessmann VITOCAL 222-S Installation And Service Instructions Manual

Installation sequence
Connecting refrigerant lines
Type AWT/AWT-AC Line
221.A07 Liquid line
Hot gas line
221.A10 Liquid line
Hot gas line
221.A13 Liquid line
Hot gas line
221.B10 Liquid line
Hot gas line
221.B13 Liquid line
Hot gas line
221.B16 Liquid line
Hot gas line

Connecting the secondary circuit

Opening the casing door
1.
Fig. 21
28
(cont.)
10 mm
7
16 mm
7
10 mm
7
16 mm
7
10 mm
7
16 mm
7
10 mm
7
16 mm
7
10 mm
7
16 mm
7
10 mm
7
16 mm
7
Fig. 22
A
B
Connection to in-
ternal unit
UNF
⅝
UNF
⅞
UNF
⅝
UNF
⅞
UNF
⅝
UNF
⅞
UNF
⅝
UNF
⅞
UNF
⅝
UNF
⅞
UNF
⅝
UNF
⅞
3.
2x
2.
2x
Straight pipe sections supplied
Pipe bends from secondary circuit connection set
(accessories): See separate installation instruc-
tions.
Torque in Nm
33 to 42
63 to 77
33 to 42
63 to 77
33 to 42
63 to 77
33 to 42
63 to 77
33 to 42
63 to 77
33 to 42
63 to 77
A
B