En-5
Transportation of the unit
3. 4.
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.
Be sure to hold the handles on the sides of the unit. Otherwise, holding the suction grille
•
on the sides of the unit may cause deformation.
Handle
Installation of the unit
3. 5.
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 connection
•
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.
AIR
Bottom side
540 mm
320 mm
Fix securely with bolts on a solid block. (Use 4 sets of commercially available M10 bolt,
nut and washer.)
Bolt
Nut
Block
PIPE INSTALLATION I
4.
Flare connection (pipe connection)
4. 1.
CAUTION
Do not use mineral oil on a
fl
ared part. Prevent mineral oil from getting into the system
as this would reduce the lifetime of the units.
While welding the pipes, be sure to blow dry nitrogen gas through them.
The maximum lengths of this product are shown in the table. If the units are further
apart than this, correct operation cannot be guaranteed.
Flaring
Use special pipe cutter and
fl
are tool exclusive for R410A.
•
Cut the connection pipe to the necessary length with a pipe cutter.
(1)
Hold the pipe downward so that the cuttings will not enter the pipe and remove any
(2)
burrs.
Insert the
fl
are nut (always use the
fl
are nut attached to the indoor and outdoor units
(3)
respectively) onto the pipe and perform the
fl
are processing with a
fl
are tool. Leakage
of refrigerant may result if other
fl
are nuts are used.
Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from
(4)
entering the pipes.
L
Check if [L] is
fl
ared uniformly
and is not cracked or scratched.
Pipe
A
B
Die
Pipe outside
diameter [mm (in.)]
Dimension A (mm)
Dimension B 0
- 0.4 [mm]
Flare tool for R410A,
clutch type
6.35 (1/4)
0 to 0.5
9.1
9.52 (3/8)
13.2
12.70 (1/2)
16.6
15.88 (5/8)
19.7
19.05 (3/4)
24.0
When using conventional
fl
are tools to
fl
are R410A pipes, the dimension A should be
•
approximately 0.5mm more than indicated in the table (for
fl
aring with R410A
fl
are tools) to
achieve the speci
fi
ed
fl
aring. Use a thickness gauge to measure the dimension A.
Pipe outside diameter
[mm (in.)]
Width across
fl
ats of Flare nut
[mm]
6.35 (1/4)
17
9.52 (3/8)
22
12.70 (1/2)
26
15.88 (5/8)
29
19.05 (3/4)
36
Width across
fl
ats
Bending pipes
4. 1. 1.
CAUTION
To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of
curvature of 100mm or more.
If the pipe is bent repeatedly at the same place, it will break.
If pipes are shaped by hand, be careful not to collapse them.
•
Do not bend the pipes at an angle of more than 90°.
•
When pipes are repeatedly bent or stretched, the material will harden, making it dif
fi
cult to
•
bend or stretch them any more.
Do not bend or stretch the pipes more than 3 times.
•
Pipe connection
4. 1. 2.
CAUTION
Be sure to install the pipe against the port on the indoor unit and the outdoor unit
correctly. If the centering is improper, the
fl
are nut cannot be tightened smoothly.
If the
fl
are nut is forced to turn, the threads will be damaged.
Do not remove the
fl
are nut from the outdoor unit pipe until immediately before
connecting the connection pipe.
After installing the piping, make sure that the connection pipes do not touch the
compressor or outer panel. If the pipes touch the compressor or outer panel, they will
vibrate and produce noise.
9379342070-02_IM.indb 5
9379342070-02_IM.indb 5
2011-12-21 11:14:09
2011-12-21 11:14:09