Samsung MXJ-YA1509 Series Installation Manual page 67

2) Piping works among outdoor units 2) Piping works among outdoor units
The additional branch joints are needed for module installation of the outdoor units. The additional branch joints are needed for module installation of the outdoor units.
When outdoor units are installed in module, there is no designation of outdoor unit's location When outdoor units are installed
according to capacity. according to capacity.
The connected piping should be positioned at the same or lower level with pipe cover hole. The connected piping should be positioned at the same or lower level with pipe cover hole.
Cautions Cautions
The refrigerant The refrigerant
piping should piping should be
the same level or the same level or
lower than lower than
connecting position connecting position
of piping to of piping to outdoor
units. units.
Piping work should Piping work should
be run with side be run with side
direction for better direction for better
uniform distribution uniform distribution
of refrigerant and oil of refrigerant and oil
like next diagram. like next diagram.
Outdoor joint kits Outdoor joint kits
should be installed should be installed
in a horizontal in a horizontal
direction even it is a direction even it is a
low pressure pipe. low pressure pipe.
When the piping When the piping
length between length between
outdoor and branch outdoor and branch
joints is 2m or joints is 2m or
more, a vertical trap more, a vertical trap
has to be installed has to be installed
like right diagram. like right diagram.
in module, there is no designation of outdoor unit's location
Correct piping Correct
be
outdoor
66 66
work
piping work
Installation guide Installation guide
Wrong piping work
Wrong piping work