Gree HOME GMV Инструкция по эксплуатации онлайн [184/367] 48267

Gree HOME GMV Инструкция по эксплуатации онлайн [184/367] 48267
Dc Inverter VRF plus Water Heater Solution Service Manual INSTALLATION
180
6Flaring
The flaring refers to expansion of pipe opening. The copper pipe is inserted here to replace the
casing pipe. In this way, it is only needed to weld on one position where the pipe is expanded.
10.6 Installation of Refrigerant Piping
1Precautions on piping works
At the site of transport, storage and construction, the two ends of copper pipes shall
be sealed with plastic sealing caps. Before welding, copper pipes must be cleaned
(washing the inner side of pipe with alcohol) to ensure no dust and no water in
pipeline.
Nitrogen-filled welding shall be used for the welding of copper pipes. Nitrogen
pressure shall be 0.050.3MPa. Nitrogen flow can be sensed by hand.
When multiple multi-connected units are installed, refrigerant piping must be marked
to avoid confusion between pipes of different units.
A two-way drier shall be mounted at the liquid pipe side at the place where an outdoor
unit is connected.
2Assemble copper pipes
The copper pipe shall be vertically inserted to the specified length. The centerline of two
assemblies shall overlap. The position shall be determined for welding. To ensure correct
mounting size, do not determine the position with your hands, thus to prevent the copper pipe from
moving when heated.
Welding
Steel pipe
Jacketed bende
r
Inner side wrinkled
and deformed
Bent, with fissure
occurring on this side
The copper pipe might be
deformed even if it is not bent
Correct section
Section
Bend section

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