Viessmann AWT-AC 241.A04, Installation And Service Instructions Manual

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Type AWT-AC 241.A07 to A13,
B10, B13
:
Replace nuts with union nuts sup-
plied (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 torque:
Type AWT-AC Cable
Connection
to external
unit Torque in Nm
241.A04 Liquid line
7
6 mm
⁷
⁄
₁₆
UNF
14 to 18
Hot gas line
7
12 mm ¾ UNF 50 to 62
241.A07 Liquid line
7
10 mm ⅝ UNF 33 to 42
Hot gas line
7
16 mm ⅞ UNF 63 to 77
241.A10 Liquid line
7
10 mm ⅝ UNF 33 to 42
Hot gas line
7
16 mm ⅞ UNF 63 to 77
241.A13 Liquid line
7
10 mm ⅝ UNF 33 to 42
Hot gas line
7
16 mm ⅞ UNF 63 to 77
241.B10 Liquid line
7
10 mm ⅝ UNF 33 to 42
Hot gas line
7
16 mm ⅞ UNF 63 to 77
241.B13 Liquid line
7
10 mm ⅝ UNF 33 to 42
Hot gas line
7
16 mm ⅞ UNF 63 to 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.)
5546 699 GB
Installation