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Restriction when install
Be sure following restriction.
1) Installation angle
Place the separation tubes horizontally or vertically so that the refrigerant separates evenly.
Horizontal
ProhibitedProhibitedGood Good
Vertical
CAUTION
● If it is placed horizontally, keep it within ± 15°. Otherwise, it will not separate the refrigerant evenly, causing a reduction
in performance.
±15°
Prohibited
Good:
Prohibited
● During piping work, apply nitrogen gas while brazing the pipes. If pipes are brazed without applying nitrogen gas, it will
create a large amount of oxidation film, which will cause a critical malfunction.
● To prevent moisture or foreign matter from entering during work, do not leave the piping open.
● Refer to the Installation Manual supplied with the outdoor unit for airtightness test and evacuation procedures.
2) Straight pipe length
A straight pipe (minimum length 2 ft. (0.5 m)) before separation tube is necessary in order to
separation the refrigerant exactly.
Main pipe
2ft. (0.5 m) or more
2 ft. (0.5 m) or more
To indoor unit
To indoor unit
To indoor unit or to
separation tube or
to header
To indoor unit or to
separation tube or
to header
To indoor unit
CAUTION
Keep the distance 2 ft. (0.5 m) or more for straight part to separation tube, in order to prevent the
outdoor unit mulfunction and generation of refrigerant noise
About the connecting curvature of eld pipe and separation tube:
The eld pipe should be connected to the branch kit so that the curved angle on each side is 3
degree or less.
3°
3°
2 ft. (0.5 m)
*[0 to 1 in.
(0 to 26 mm)]
*[0 to 1 in.
(0 to 26 mm)]
A
B
*: Allowed value based on "A" (center of eld pipe) at 2 ft. (0.5 m) from "B"
(junction of the separation tube).
- (06 - 32) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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