Connecting The Refrigerant Lines To The Outdoor Module - Wolf BWL-1 S Installation And Operating Instructions Manual

Connecting the refrigerant line to
the outdoor module
Shape of flare
Fig.: Example of a flanging tool
Euro flanged adaptor connection kit
3064298_201507
16. Connecting the refrigerant lines
to the outdoor module
Not level Cracks
Only use copper pipes which are approved for refrigerant R410A (for nominal
diameter, see "Specification" chapter).
Suction gas lines and liquid lines must have separate thermal insulation. Closed cell,
diffusion-proof thermal insulation, min. thickness 6 mm
Do not allow any contaminants (e.g. metal swarf or moisture) to enter the
copper pipes.
Remove the union nuts of the outdoor unit from connections C (liquid line) and D
(hot gas line) of the refrigerant lines.
Replace nuts with the union nuts supplied (indoor unit) (5/8 UNF for liquid line,
7/8 UNF for hot gas line).
Flare the pipe ends
Tighten the nuts
Tighten nuts with the following torque:
Line
Liquid line Ø 10 mm
Hot gas line Ø 16 mm
Alternatively, the refrigerant lines can also be connected using the Euro flanged
adapter connection kit for hard-soldering on refrigerant lines (available from the Wolf
range of accessories).
D
Cracks Uneven
thickness
Connection to outdoor unit
5/8 UNF
7/8 UNF
C
CORRECT
Torque in Nm
37 +/- 4
70 +/- 7
25