Viessmann Vitocal 242-S, Инструкция по установке и обслуживанию

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36
2.
!
Please note
Contamination (e.g. metal
swarf) or moisture must not
enter the copper pipes.
Therefore, hold the pipe open-
ings downwards or tempora-
rily plug them.
Undo the nuts from connections C
and
D
on the refrigerant lines (liquid
line and hot gas line).
Type AWT-AC 241.A04 :
Slide the nuts onto the refrigerant
lines prepared on site.
Type AWT-AC 241.A07 , A10 and
A13 :
Replace nuts with the supplied union
nuts (internal unit) (⅝ UNF for liquid
line, ⅞ UNF for hot gas line).
3. Flare the pipe ends.
4. Secure the pipes.
Tighten nuts with the following torques:
Type AWT-AC Line
Connection
to external
unit Torque in Nm
241.A04 Liquid line
7
6 mm
⁷
⁄
₁₆
UNF 14–18
Hot gas line
7
12 mm ¾ UNF 50–62
241.A07 Liquid line
7
10 mm ⅝ UNF 33–42
Hot gas line
7
16 mm ⅞ UNF 63–77
241.A10 Liquid line
7
10 mm ⅝ UNF 33–42
Hot gas line
7
16 mm ⅞ UNF 63–77
241.A13 Liquid line
7
10 mm ⅝ UNF 33–42
Hot gas line
7
16 mm ⅞ UNF 63–77
Connection to the internal unit
Note
We recommend using the pipe bends
supplied for connecting the refrigerant
lines. Depending on the installation con-
ditions, it may also be possible to con-
nect the refrigerant lines directly without
bends.
Installation sequence
Connecting refrigerant lines
(cont.)
5623 661 GB