Huawei NetCol5000-A035 Quick Manual page 9

6.2
Discharging Nitrogen
Exhaust nitrogen from three needle valves
for the indoor unit and one needle valve for
the outdoor unit. When exhausting
nitrogen, do not remove the valve plug in
case of losing or damaging it.
6.3
Welding the Indoor Unit Ports
Take protective measures, such as spreading a piece of wet cloth, around the welding position,
to avoid burning the bottom panel, top panel, side panel, internal components, needle valves,
other pipes, thermal insulation foam, power cables, labels, and tags.
Top pipe routing
Liquid pipe Gas pipe
9
Bottom pipe routing
Gas pipe
Liquid pipe