Viessmann 7424689, Инструкция по установке и обслуживанию

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34
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Please note
Contamination (such as metal
swarf) or moisture must not enter
the copper pipes.
Therefore, hold the pipe open-
ings down or plug them.
Note
Refrigerant lines of the internal unit are
filled with nitrogen, positive pressure
2 bar.
1. Remove the nuts from the refrigerant
connections
C
and
D
.
Type AWB/AWB-AC 201.A04:
Replace nuts with union nuts sup-
plied (
⁷
⁄
₁₆
UNF for liquid line, ¾ UNF
for hot gas line). Connect supplied
reducer with copper sealing ring.
Type AWB/AWB-AC 201.A07,
201.A10, 201.A13:
Push the nuts onto the associated
refrigerant lines from the external
unit.
2. Swage the pipe ends of the refriger-
ant lines.
Note
If solder fittings are used, solder the
fittings using an inert gas.
3. Fit refrigerant lines and insulate them
to provide protection from heat and
vapour diffusion.
Tighten the nuts with the following torques:
Type
AWB/
AWB-AC
Line Connection to
internal unit Torque in Nm
201.A04 Liquid line
7
6 mm
⅝
UNF
with reducer
⁷
⁄
₁₆
x
⅝
14–18
Hot gas line
7
12 mm
⅞
UNF
with reducer
¾ x
⅞
50–62
201.A07 Liquid line
7
10 mm
⅝
UNF
33–42
Hot gas line
7
16 mm
⅞
UNF
63–77
201.A10 Liquid line
7
10 mm
⅝
UNF
33–42
Hot gas line
7
16 mm
⅞
UNF
63–77
201.A13 Liquid line
7
10 mm
⅝
UNF 33–42
Hot gas line
7
16 mm
⅞
UNF 63–77
Installation sequence
Connecting the refrigerant lines
(cont.)
5601 429 GB