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When an obstruction in the upper space (Unit : mm)
(1) Obstacles at rear and above
• Up to 3 units can be installed side by side.
• When 4 units or more are arranged in a line, provide the space as shown below.
Max. 300
250 or more
1,500 or more
■ Outdoor units installation multi-row
(1) Single parallel unit arrangement
(2) Multiple parallel unit arrangement
250 or more
1,000 or more
Do not install the outdoor unit in two-stage where the drain water could freeze.
Otherwise the drainage from the upper unit may form ice and cause a malfunction of
the lower unit.
NOTES:
• If the space is larger than stated above, the condition will be the same as when there
is no obstacle.
• When installing the outdoor unit, be sure to open the front and left side to obtain
better operation effi ciency.
3.2. Mounting the unit
• 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).
• 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 20 mm. (Refer to the fi gure.)
• If overturning prevention is required, purchase the necessary commercially available
items.
En-6
1,500 or more
250 or more
200 or more
(Unit : mm)
100 or more
1,000 or more
200 or more
500 or more
200 or more
2,000 or more
400 or more
1,000 or more
200 or more
200 or more
CAUTION
• The foundation shall support the legs of the unit and have a width of 50 mm or more.
50 mm
or more
• Do not install directly on the ground, this may result in equipment failure.
• The drain water is discharged from the bottom of the equipment. Construct a drain
ditch around the base and discharge the drain water properly.
• Provide ample space for ice buildup from condensate between the bottom of the unit
and the flat surface on which it is mounted. Otherwise, there is risk that the drainage
water will freeze between the device and the surface, disabling drainage.
• 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 elements.
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 blowing and drifting snow is common to the
region.
(Unit : mm)
580
3.3. Removing and replacing part
■ Switch cover removal
(1) Remove the tapping screws.
(2) Slide the switch cover downwards to
release.
■ Installing the switch
cover
(1) After inserting the hooks (2 places) on
the switch cover into the hole on the
outdoor unit, slide the switch cover
upwards.
(2) Replace the tapping screws.
• Install the unit where it will not be tilted by more than 3°.
• When installing the outdoor unit where it may exposed to strong wind, fasten it
securely.
3.4. Drain installation
• Perform drain work in accordance with this Manual, and ensure that the drain water
is properly drained.
• When the outdoor temperature is 0 °C or less, do not use the accessory drain pipe.
If the drain pipe is used, the drain water in the pipe may freeze in extremely cold
weather.
• If you are installing the drain pipe, provide
a working space under the base of the
outdoor unit.
• As the drain water flows out of the outdoor
unit during heating operation, install the
drain pipe and connect it to a commercial
16 mm hose.
• 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.
Base
CAUTION
Bolt
20
Hooks
Holes
WARNING
CAUTION
Drain pipe mounting hole
Base of the outdoor unit
Drain pipe
Nut
Washer
Screws
Switch cover
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