En-10
Branch kit restriction when install
Be sure following restriction.
(1) Installation angle
Install the outdoor unit branch kit horizontally level, within 0° to -10°, so that the refrigerant
separates evenly.
To indoor unit
To outdoor unit
To outdoor unit or next branch kit
PROHIBITED
PROHIBITED
PROHIBITED
PROHIBITED
GOOD:
0° to -10°
GOOD:
0° to -10°
Do not install
the outdoor
unit branch kit
vertically.
PROHIBITED
PROHIBITED
PROHIBITED
(2) Straight pipe length
Leave the distance 0.5 m or more for straight part to outdoor unit branch kit.
To indoor unit
(To main pipe)
To outdoor unit
To outdoor unit
To outdoor
unit
0.5 m or more
0.5 m or more
To indoor unit (To main pipe)
To outdoor unit
To outdoor
unit
(3) About the connecting curvature of field pipe and branch kit:
The field pipe should
be connected to the
branch kit so that the
curved angle on each
side is 3 degree or
less.
0.5 m
*: Allowed value based on “A” (center
of field pipe) at 0.5 m from “B” (junction
of the branch kit).
* 0 to 26 mm
* 0 to 26 mm
(4) For details, refer to the Installation Instruction Sheet of the outdoor unit branch kit.
Examples of multiple unit installation
Master
unit
Slave
unit 1
Slave
unit 2
(Example 3)
(Example 1)
(Example 2)
Master unit
Slave unit 1 Slave unit 2
Master unit Slave unit 1 Slave unit 2
(5) Examples of multiple unit installation are shown below.
CAUTION
To prevent the oil from settling in the stopped unit, install the pipes between the outdoor
units so that they are level or are tilted upward to the outdoor units.
Installable
patterns
GOOD
GOOD
GOOD
Master
unit
Slave
unit 1
Slave
unit 2
Master
unit
Slave
unit 1
Slave
unit 2
Master
unit
Slave
unit 1
Slave
unit 2
To indoor unit
To indoor unit
To indoor unit
Non-install-
able patterns
PROHIBITED
Master
unit
Slave
unit 1
Slave
unit 2
To indoor unit
PROHIBITED
Master
unit
Slave
unit 1
Slave
unit 2
To indoor unit
PROHIBITED
Master
unit
Slave
unit 1
Slave
unit 2
To indoor unit
(6) If the pipe length between outdoor unit branch kit and outdoor unit branch kit (or
slave unit) is longer than 2 m, or a lower pipe line exists between outdoor units, rise
for gas pipe (Discharge gas pipe and Suction gas pipe) should be arranged to elimi-
nate oil from entering into and remaining at pipes and the stopped outdoor unit.
However, there is no need to provide a rise on the pipe connecting between the
master unit and the indoor unit even if the length exceeds 2 m.
Master
unit
Slave
unit 1
Slave
unit 2
To indoor unit
2 m or less
2 m or less
Suction gas pipe
Discharge gas pipe
Master
unit
Slave
unit 1
Slave
unit 2
To indoor unit
Rise
(200 mm or more)
Suction gas pipe
Discharge gas pipe
2 m or more
2 m or more
2 m or less
2 m or less
Master
unit
Slave
unit 1
Slave
unit 2
Suction gas pipe
Discharge gas pipe
Rise
lower pipe
To indoor unit
500 mm or less
9378945630-02_IM.indb 10
9378945630-02_IM.indb 10
3/6/2020 11:55:23 AM
3/6/2020 11:55:23 AM
