En-4
Single outdoor unit installation
21 21 11
When the upward area is open
When there are
•
obstacles at the
back side.
100 mm
or more
AIR
When there are
•
obstacles at the
back and front
sides.
100 mm
or more
600 mm
or more
AIR
When an obstruction is present also in the upward area
When there are
•
obstacles at the
back, side(s), and
top
100-300 mm*
250 mm or more
(Service space)
300 mm
or more
60
0-1
000
mm*
AIR
※
If the space is larger than that is stated, the condition will be the same as that there are no
obstacles.
Multiple outdoor unit installation
21 21 21
Provide at least 250 mm of space between the outdoor units if multiple units are installed.
•
When routing the piping from the side of an outdoor unit, provide space for the piping.
•
No more than 3 units must be installed side by side.
•
When 3 units or more are arranged in a line, provide the space as shown in the following
example when an obstruction is present also in the upward area.
When there are obstacles at the back side with the installation of more than one unit.
•
250 mm
or more
250 mm
or more
300
mm
or more
AIR
Transportation of the unit
21 41
WARNING
Do not touch the fins. 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 fingers 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
21 31
Install 4 anchor bolts at the locations indicated with arrows in the figure.
•
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 figure.)
•
If overturning prevention is required, purchase the necessary commercially available
•
items.
650mm
Bottom side
4-ø12 hole
370mm
AIR
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
41
Flare connection (pipe connection)
41 11
CAUTION
Do not use mineral oil on a flared 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 flare 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 flare nut (always use the flare nut attached to the indoor and outdoor units
(
3
)
respectively) onto the pipe and perform the flare processing with a flare tool. Leakage
of refrigerant may result if other flare 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 flared uniformly
and is not cracked or scratched.
Pipe
A
B
Die
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