24
(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
*2m or more
Indoor unit side
Indoor unit side
Less than 2m
Less than 2m
Less than 2m
Less than 2m
2m or more
2m or more
oil trap min 200m
m
oil trap min 200m
m
The outdoor unit
The outdoor unit
The outdoor unit
The outdoor unit
The outdoor unit
The outdoor unit
(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
Indoor unit side
refrigerant oil
accumulate in pipe
(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).
Outdoor unit
Outdoor unit
Outdoor unit
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):
within + 15°
