2. When drawing out the refrigerant pipe from the
underside, set the height of the stand to
19.7" (500 mm) or more.
4. Mount the vibration-proof rubber (including vibration-proof blocks) so that it fits under the whole clamping leg.
C
r o
e r
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Install the vibration-proof
Anchor bolt
rubber so that the bent
part of the fixing leg is
Vibration-proof rubber
grounded.
n I
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The bent part of
the fixing leg is not
grounded.
5. Be careful of the connecting arrangement of the header unit and follower units. Set the outdoor units in order of
capacity from the one with the largest capacity. (A (Header unit)
Be sure to use a header unit for the leading outdoor unit to be connected to the main pipe. (Figure 1 and 3)
Be sure to use a outdoor unit connection piping kit (RBM-BT14UL/RBM-BT24UL : separately purchased)
to connect each outdoor unit.
Be careful of the direction of the Outdoor unit connection piping kit for the liquid side. (As shown in Figure 2, a
Outdoor unit connection piping kit cannot be attached so that the refrigerant of the main pipe flows directly into
the header unit.)
Liquid piping
Figure 1
Correct
Header unit
Follower unit
Follower unit
A
B
C
Main pipe
To the indoor unit
15-EN
3. Do not use 4 stands on the corner to support the
outdoor unit.
Incorrect
Correct
C
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Incorrect
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B
C)
Figure 2
Incorrect
Header unit
Follower unit
Follower unit
A
B
C
Incorrect
Main pipe
To the indoor unit
Gas piping
Figure 3
Correct
Header unit
Follower unit
Follower unit
A
B
C
Main pipe
T
o
h t
e
n i
d
o
r o
u
n
t i
Extension valve
When attaching a Y-shaped branching joint for the gas side, attach it level with the ground (Be sure not to
exceed ±15 degrees.). Regarding a T-shape branching joint for the liquid side, there is no restriction for its angle.
(Horizontal line)
Within ±15 degrees
A
(A arrow view)
B
In case of using the Y-shaped branching joint for connecting between
outdoor units (Discharge gas joint and Suction gas joint), please keep
the straight part of at least 19.7" (500 mm) at the inlet.
When drawing pipes downward
Figure 5
Correct
Header unit
Follower unit
Follower unit
A
B
C
L-shaped
pipe
To gas-side branch
To gas-side branch
unit
unit
Adding only one follower unit is possible. Install the additional unit so that its position is opposite to the header
unit. Use an extension valve for installation (See the figure above.).
Specify the pipe diameter in advance to allow for adding another unit.
– 8 –
[Inverse connection of a gas-side branch unit]
Figure 4
Incorrect
Header unit
Follower unit
Follower unit
A
B
C
Main pipe
T
o
h t
e
n i
d
o
r o
u
n
t i
To gas-side branch unit
(Horizontal line)
Do not connect
Within ±15
the branching
degrees
vertically.
(B arrow view)
At a level position
[Vertical connection of branch units]
Figure 6
Incorrect
To gas-side
To gas-side
branch unit
branch unit
EN
EN
ID
16-EN