En-14
Separation tube connection
51 21
CAUTION
Use genuine separation tubes for the refrigerant piping branches. Separation tubes may be used for piping
•
between the outdoor unit and branch box.
Select number of separation tubes and purchase it before starting the installation work.
•
Any vertical piping shall be in the part of the main piping. If a main pipe is bent, keep the straight part more than 10 times
•
the diameter of the connected pipe. A variance in the amount of refrigerant may be caused if the straight part is short.
For details, refer to the Installation Manual of separation tubes.
•
CAUTION
Separation tube
A
B
A
B
A
B
A
B
A
B
A
B
Horizontal
line
OK
Horizontal
Vertical
or
NO GOOD
±15°
A : Outdoor unit or Separation tube
B : Branch box or Separation tube
Name and shape
Liquid pipe
Gas pipe
Flare connection (pipe connection)
51 31
CAUTION
Do not use mineral oil on a flared part. Prevent mineral oil from getting into the system as this would reduce the
•
lifetime of the units.
While welding the pipes, be sure to blow dry nitrogen gas through them.
•
The maximum lengths of this product are shown in the table. If the units are further apart than this, correct
•
operation cannot be guaranteed.
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