Connection To The Internal Unit - Viessmann VITOCAL 200-S Installation And Service Instructions Manual

Connecting the refrigerant lines
Type AWB/ Cable
AWB-AC
201.C10 Liquid line
Hot gas line
201.C13 Liquid line
Hot gas line

Connection to the internal unit

2x
2.
1.
C
D
Fig. 13
Liquid line
C
Hot gas line
D
!
Please note
Ensure that no contamination (e.g. metal swarf)
or moisture enters the copper pipes.
Therefore, hold the pipe openings down or plug
them.
Note
The refrigerant lines of the internal unit are filled with
nitrogen; overpressure 1 to 2 bar (0.1 to 0.2 MPa).
1. Remove the nuts from refrigerant connections
and D .
Type AWB/AWB-AC 201.B04:
Replace nuts with union nuts supplied:
⁷⁄₁₆ UNF for liquid line
■
UNF for hot gas line
■ ¾
Connect supplied reducer with copper sealing ring.
Type AWB/AWB-AC 201.B07 to B13, C10, C13:
Push the nuts onto the relevant refrigerant lines
from the external unit.
(cont.)
10 mm
7
16 mm
7
10 mm
7
16 mm
7
C
D
C
D
C
Connection to exter-
nal unit
UNF
⅝
UNF
⅞
UNF
⅝
UNF
⅞
3.
2. Flare the pipe ends of the refrigerant lines.
Note
If solder fittings are used, solder the fittings using a
shielding gas.
3. Fit refrigerant lines and insulate them to provide
protection from heat and vapour diffusion.
Installation sequence
Torque in Nm
33 to 42
63 to 77
33 to 42
63 to 77
17