En-8
4. 4. Drain installation
45 type
CAUTION
• Perform drain work in accordance with this Manual, and ensure that the drain water
is properly drained. If the drain work is not carried out correctly, water may drip down
from the unit, wetting the furniture.
• When the outdoor temperature is 32 °F (0 °C) or less, do not use the accessory
drain pipe and drain cap. If the drain pipe and drain cap are used, the drain water in
the pipe may freeze in extremely cold weather. (Reverse cycle model only).
• As the drain water
fl
ows out of the outdoor unit during heating operation, install the
drain pipe and connect it to a commercial 5/8 in. (16 mm) hose. (Reverse cycle
model only)
• When installing the drain pipe, plug all the holes other than the drain pipe mounting
hole in the bottom of the outdoor unit with putty so there is no water leakage. (Reverse
cycle model only)
[Unit: in. (mm)]
Drain cap mounting hole × 7
Drain pipe mounting
hole × 1
5-1/2 (140)
8-15/16 (227)
11-5/8 (296)
12 (305)
1-9/16 (40)
12-3/8 (315)
12-5/8 (321)
13-7/16 (341)
1-15/16 (50)
10-15/16 (278)
17-1/4 (438)
3 (76)
20-11/16 (526)
24-1/2 (622)
27-3/16 (690)
Drain pipe mounting hole
Base
Drain pipe
4. 5. Secure the unit
WARNING
When installing the outdoor unit where it may exposed to strong wind, fasten it secure-
ly.
• 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 2 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
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
1
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)
2 (50)
2 (50)
16
16-1/8 (410)
[Unit: in. (mm)]
Bolt
1 (20)
Nut
Base
• 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.
2 in. (50 mm) or over
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.
In places where the outdoor temperature drops to 32 °F (0 °C) or lower, the drain wa-
ter may freeze and may stop up the drain or cause other outdoor unit trouble. There-
fore take measures so that the drain water will not freeze and clog the drain.
Please set up the outdoor unit in a high place and please do not arrange the frame of
installed stand under the drain port, because the water dropped from the drain port
repeats freezing and accumulating, and may block the drain port.
5. PIPE INSTALLATION
5. 1. Pipe connection
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.
5. 1. 1. Flaring
• Use special pipe cutter and
fl
are tool exclusive for R410A.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that the cuttings will not enter the pipe and remove
any burrs.
(3) Insert the
fl
are nut (always use the
fl
are nut attached to the indoor and outdoor
units 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.
(4) Protect the pipes by pinching them or with tape to prevent dust, dirt, or water
from entering the pipes.
9380545101-02_IM.indb 8
9380545101-02_IM.indb 8
2/26/2016 10:16:04 AM
2/26/2016 10:16:04 AM
