Filling The Refrigerant Lines; Filling The Indoor Module And Refrigerant Lines; Checking The Refrigerant Circuit For Leaks - Wolf BWL-1S-05 Installation And Operating Instructions Manual

16 Filling the refrigerant lines
16.1 Filling the indoor module and refrigerant lines
Single refrigerant line length < 12 m
The pre-filled quantity of refrigerant in the outdoor module is sufficient
for a single line length of 3 to 12 m.
Single refrigerant line length > 12 m
Line lengths of 12 - 25 m must be topped up with an additional 60 g/m of refrigerant R410A.
The additional refrigerant can be added after evacuating the refrigerant lines and before opening the
shut-off valves on the outdoor module.
Pressure
gauge block
Vacuum gauge
with shut-off valve
Vacuum pump
Outdoor module
16.2 Checking the refrigerant circuit for leaks
R410A is an air-displacing, non-toxic gas. Uncontrolled release of refrigerant
may result in breathing difficulties and asphyxiation.
Check the connections for refrigerant leaks:
− All flared connections on the refrigerant lines between the indoor and outdoor unit.
− All soldered joints and screw connections on the refrigerant lines in the indoor and outdoor module.
− Carry out the leak and pressure test using dry nitrogen.
30
Filling the refrigerant lines
Indoor module
Shut-off valves
BWL-1S(B)-05 refrigerant line Ø 6 mm
BWL-1S(B) -07/10/14/16 refrigerant line Ø 10 mm
BWL-1S(B)-05 hot gas line Ø 12 mm
BWL-1S(B) -07/10/14/16 hot gas line Ø 16 mm
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