13
$ 7HENOUTDOORUNITSARESTACKED
Only two outdoor units can be stacked.
For drain treatment, a space of at least 400 mm is required between the upper and lower outdoor units.
Close the area A (gap between the upper outdoor unit and lower outdoor unit) so that the outlet air does not bypass there.
(1) Obstruction on the air outlet side (2) Obstruction on the air inlet side
a
b
Area A
a 500 mm or more
b 400 mm
a
b
Area A
a 200 mm or more
b 400 mm
% 7HENOUTDOORUNITSAREINSTALLEDINROWSSUCHASONAROOFTOP,(
(1) One outdoor unit installed in each row
a
b
c
d
H
L
a 500 mm or more
b 300 mm or more
c 1,000 mm or more
d 50 mm or more
(2) Only two outdoor units can be installed side by side.
a
b
c
A
L
H
d
e
a 1,000 mm or more
b 400 mm or more
c 2,000 mm or more
d 250 mm or more
e 250 mm or more
4HEDIMENSIONALRELATIONSHIPBETWEEN(!AND,ISASSHOWN
in the following table.
Unit: mm
A
,
( 150
(, Installation is not allowed.
The values described above are the least space to optimize
application performance.
If any service area is needed for service according to field
circumstance, obtain enough service space.
In case of multiple installations
● Concrete block foundation should be used and well drained.
"ESURETHATTHEFOUNDATIONHEIGHTISKEPTATLEASTMORETHAN
50 mm from the ground.
● "ASELEGSHOULDBEFIXEDBYINSERTINGTHEFLATWASHERFIELD
supply) and single nut (field supply) onto the anchor bolt
(M8, field supply). Protrusion length of anchor bolt should be
13 mm or less and fastening height of nut should be 12 mm
or less.
Note: If the anchor bolt is longer and the fastening height of
nut is higher, the front panel may be damaged when
installing or removing it.
● Use lug bolts or equal to bolt down unit, reducing vibration
and noise.
Air intake
Air intake
Min. 150 mm
Anchor bolts
(4 pieces)
Air discharge
13 mm or less
(Protrusion length of anchor bolt)
12 mm or less
(Fastening height of nut)
14
2-2. Air-Discharge Chamber for Top Discharge
"ESURETOINSTALLTHEAIRDISCHARGECHAMBERINTHElELDWHEN
● it is difficult to keep a space of min. 50 cm between the air
discharge outlet and an obstacle.
● the air discharge outlet is facing a sidewalk and discharged
hot air annoys passers-by.
Air discharge
)NREGIONSWITHSIGNIlCANTSNOWFALLTHEOUTDOORUNITSHOULDBE
provided with a platform and snow-proof duct.
2-3. Installing the Unit in Heavy Snow Areas
In locations with strong wind, snow-proof ducting should likewise
BElTTEDANDDIRECTEXPOSURETOTHEWINDSHOULDBEAVOIDEDAS
much as possible.
■
Countermeasures against snow and wind
In regions with snow and strong wind, the following problems
may occur when the outdoor unit is not provided with a platform
and snow-proof ducting:
Without snow-
proof ducting
,OWPLATFORM
With snow-proof
ducting
(IGHPLATFORM
a) The outdoor fan may not run and damage of the unit may be
caused.
b) There may be no airflow.
c) The tubing may freeze and burst.
d) The condenser pressure may drop because of strong wind,
and the indoor unit may freeze.
2-4. Precautions for Installation in Heavy Snow Areas
(1) The platform should be higher than the maximum snow
depth +50 cm.
(2) The 2 anchoring feet of the outdoor unit should be used for
the platform, and the platform should be installed beneath
the air intake side of outdoor unit.
(3) The platform foundation must be firm and the unit must be
secured with anchor bolts.
(4) In case of installation on a roof subject to strong wind,
countermeasures must be taken to prevent the unit from
being blown over.
2-5. Dimensions of Snow / Wind-proof Ducting and
Refrigerant Tubing Space for Installation
146
146
Min. 100
Min. 100
Unit: mm
$UCT
Air Intake
Platform (foundation)
(IGHERTHANTHEMAXIMUM
snow depth + 50 cm
About 1/2 of the unit height
$UCT
Outdoor Unit
9
ENGLISH
00_2WAY_All_282008.indb 900_2WAY_All_282008.indb 9 2016/12/1 9:55:122016/12/1 9:55:12
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