Sakata SOB-50VA Service Manual page 116

Light Commercial R410A on-off S13-01.01.13en
5.3 Drainage pipe insulation
The connection part should be insulated, or else water will be condensing at the non-insulation part.
5.4 Note
5.4.1 The jointing area, expanding area and the flange area should be heat insulated after passing
the pressure test
5.4.2 The gas and liquid pipe should be heat insulated individually, the connecting part should be
heat insulated individually.
5.4.3 Use the attached heat-insulation material to insulate the pipe connections (pipes' tie-in ,expand nut )
of the indoor unit
Installation 116