En-5
Base
2 in
(50 mm)
or over
Do not install directly on the ground, this may result in equipment
failure.
Make sure the height of the base is 2 in (50 mm) from the
ground. Otherwise, there is a risk that the drainage water will
freeze between the device and the surface, disabling drainage.
CAUTION
If the unit is installed in a region that is exposed
to high winds, freezing conditions, freezing rain,
snow fall or heavy snow accumulation, take
appropriate measures to protect it from those el-
ements. To ensure stable operation, the outdoor
unit must be installed on a raised stand or rack,
at or above the anticipated snow depth for the
region. The installation of snow hoods and drift
prevention fencing is recommended when blow-
ing and drifting snow is common to the region.
4. SYSTEM CONFIGURATION
4. 1. System con
fi
guration
CAUTION
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 + f
≤
393 ft (120 m), a + p
≤
393 ft (120 m)
• Between the
fi
rst separation tube and the farthest indoor unit
f
≤
131 ft (40 m), p
≤
131 ft (40 m)
• Between the nearest indoor unit and the outdoor unit
a + b + h
≥
16 ft (5 m), a+c+q
≥
16 ft (5 m)
• Between outdoor unit and the
fi
rst separation tube
a
≥
9 ft (3 m)
• Difference in height between outdoor units and indoor units (H1)
164 ft (50 m) or less: Outdoor unit is higher than indoor unit
131 ft (40 m) or less: Outdoor unit is lower than indoor unit
• Difference in height between indoor units and indoor units
H2
≤
49 ft (15 m), H3
≤
49 ft (15 m)
• Maximum total equivalent pipe length
a + f + h + j + l + n + p + q + s + u
≤
590 ft (180 m)
• Total refrigerant amount
≤
34 lbs (15.7 kg)
Fig. A
Outdoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
H1
H2
H3
f
h
p
q
j
s
u
l
n
b
c
a
4. 2. Pipe selection
CAUTION
This unit is designed speci
fi
cally for use with the R410A refrigerant.
Pipes for R407C or R22 may not be used with this unit.
Do not use existing pipes.
Improper pipe selection will degrade performance.
First separation
tube (optional)
Separation tube
(optional)
Pipe size
(table B)
Pipe size
(table C)
Pipe size
(table D)
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
3. 3. 3. Outdoor units installation in multi row
Unit: in (mm)
* The following settings are not recommended in case of cooling by a low outside tempera-
ture.
(1) Single parallel unit arrangement
6 (150)
24 (600)
40 (1000)
79 (2000) or more
(2) Multiple parallel unit arrangement
20 (500)
24 (600)
60 (1500)
119 (3000) or more
3. 4. Transporting the unit
WARNING
Do not touch the
fi
ns. Otherwise, personal injury could result.
CAUTION
When carrying the unit, hold the handles on the right and left sides and be careful.
If the outdoor unit is carried from the bottom, hands or
fi
ngers may be pinched.
• Carry slowly in the manner as shown on “Fig. B” holding the handles “Fig. A” in right and
left sides. (Be careful not to touch with hands or objects.)
• Be sure to hold the handles on the sides of the unit. Otherwise, the suction grilles on the
sides of the unit may be deformed.
Front view
Rear view
Fig. B
Handle
Handle
Suction grille
Fig. 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 1 in (50 mm) 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 connec-
tion pipes.
• Secure the unit to a solid block using foundation bolts. (Use 4 sets of commercially avail-
able M10 bolts, nuts, and washers.)
• The bolts should protrude 13/16 in (20 mm). (Refer to the
fi
gure.)
• If overturning prevention is required, purchase the necessary commercially available
items.
6-9/16
(166)
AIR
25-9/16
(650)
6-1/16
(154)
1-15/16
(50)
1-15/16
(50)
5/8 (16)
13/16 (20)
16-1/8 (410)
Unit: in (mm)
Bolt
Nut
Base
9380545095_IM.indb 5
9380545095_IM.indb 5
11/17/2015 4:14:25 PM
11/17/2015 4:14:25 PM
