Wolf BWL-1S-07 - Filling the Refrigerant Lines; Filling the Indoor Module and Refrigerant Lines; Checking the Refrigerant Circuit for Leaks

30 3064298_201805
Fillingtherefrigerantlines
16 Fillingtherefrigerantlines
16.1 Fillingtheindoormoduleandrefrigerantlines
Singlerefrigerantlinelength<12m
Thepre-lledquantityofrefrigerantintheoutdoormoduleissufcient
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.
Outdoor module
Indoor module
Shut-off valves
BWL-1S(B)-05hotgaslineØ12mm
BWL-1S(B)-07/10/14/16hotgaslineØ16mm
BWL-1S(B)-05refrigerantlineØ6mm
BWL-1S(B)-07/10/14/16refrigerantlineØ10mm
Service valve (Schrader valve)
Pressure
gauge block
Vacuum gauge
with shut-off valve
Vacuum pump
Liquid line
Hot gas line
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ared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.