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(3）Take 3-module combination of outdoor units as an example:If the piping length between the
outdoor unit is no less than 2m, set the oil pool so that oil pool can prevent the accumulation of
cooling oil accumulation inside individual outdoor unit.
*Less than 2m
The outdoor unit
Indoor unit side
Less than 2m
(4) Take 3-module combination of outdoor units as an example:Install the outdoor unit piping in a
horizontal plane, or with the indoor side of the pipe connected to the downward tilt state, otherwise,
the system may accumulate cooling oil in the pipeline.
Indoor unit side
(5) Take 3-module combination of outdoor units as an example:For maintenance, if the piping is
installed in front of the outdoor unit, ensure that the minimum vertical distance between the outdoor
unit and the branch pipe is 500mm. (During the replacement of the compressor, keep a minimum of
500mm maintenance space).
Min 500mm
(6) Branch pipe direction
The direction of the branch pipe is as shown below, install the branch pipe closer to the ground (with
an horizontal inclination angle ≤15 degrees):
The outdoor unit
The outdoor unit
Less than 2m
refrigerant oil
accumulate in pipe
Outdoor unit
*2m or more
The outdoor unit
Indoor unit side
Less than 2m
2m or more
Indoor unit side
Outdoor unit
within + 15°
24
The outdoor unit
The outdoor unit
Less than 2m
2m or more
Outdoor unit
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