En-5
4. SYSTEM CONFIGURATION
4. 1. System confi guration
CAUTION
The maximum lengths of this product are shown in the table. If the units are further
apart than this, correct operation cannot be guaranteed.
Always keep to the limit on the total amount of refrigerant. Exceeding the limit on the
total amount of refrigerant when charging will lead to malfunction.
• Between outdoor unit and the farthest indoor unit
a + d ≤ 50m, a + h ≤ 50m
• Between the fi rst separation tube and the farthest indoor unit
d ≤ 40m, h ≤ 40m
• Between the nearest indoor unit and the outdoor unit
a + b + e ≥ 5m, a + c + i ≥ 5m
• Between outdoor unit and the fi rst separation tube
a ≥ 3m
• Diff erence in height between outdoor units and indoor units (H1)
30m: For the indoor unit stated below
30m: For the outdoor unit stated below
• Diff erence in height between indoor units and indoor units
H2 ≤ 15m, H3 ≤ 15m
• Maximum total equivalent pipe length
a + d + e + f + g + h + i + j + k ≤ 80m
• Total refrigerant amount ≤ 6.83kg
Fig. A
Outdoor
unit
Indoor
unit
d
h
i
f
e
b
c
jk
H3
g
H1
H2
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
a
3. 5. Installing the unit
• Please install the outdoor unit without slant. (within 3 degrees )
• Install 4 anchor bolts at the locations indicated with arrows in the fi gure.
• To reduce vibration, do not install the unit directly on the ground. Install it on a secure
base (such as concrete blocks).
• The foundation shall support the legs of the unit and have a width of 50mm or more.
• Depending on the installation conditions, the outdoor unit may spread its vibration
during operation, which may cause noise and vibration. Therefore, attach damping
materials (such as damping pads) to the outdoor unit during installation.
• Install the foundation, making sure that there is enough space for installing the con-
nection pipes.
• Secure the unit to a solid block using foundation bolts. (Use 4 sets of commercially
available M10 bolts, nuts, and washers.)
• The bolts should protrude 20mm. (Refer to the fi gure.)
• If overturning prevention is required, purchase the necessary commercially available
items.
166
AIR
650 154
50 50
16
410
(Unit: mm)
Bolt
20
Nut
Base
• Do not install directly on the ground, this may result in equipment failure. Make sure
the height of the base is 50 mm from the ground. Otherwise, there is a risk that the
drainage water will freeze between the device and the surface, disabling drainage.
50 mm
or over
Base
CAUTION
In areas with heavy snowfall , where
intake and outlet of the outdoor unit can
become blocked by snow.
It is recommended that unit be installed
under a canopy or elevated on a high
stand.
Failure to do so will result in poor heating
performance and/or premature failure of
equipment.
9380545149-02_IM_EN.indd 59380545149-02_IM_EN.indd 5 9/7/2021 1:38:53 PM9/7/2021 1:38:53 PM
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