12
19
(6)
Obstructions on the left side, right side and rear side (Front side and above the unit are opened).
(7)
Obstructions on the front side (Rear side, left side, right side and above the unit are opened).
(8)
Obstructions on the front side and rear side (Left side, right side and above the unit are opened).
One of the obstructions’ height shall be not more than 2000 mm.
(9)
Installation in front-rear rows
Installation with intakes facing intakes or outlets facing outlets (Left side, right side and above the unit are opened).
One of the obstructions’ height shall be not more than 2000 mm.
(10)
In the case of continuous installation of the outdoor units, provide a space of 500 mm or more every three units for the
maintenance space.
* The outdoor units require necessary space to unscrew on
the rear side for maintenance and if a sufficient maintenance
space is provided on the rear side (400 mm), the space of
over 150 mm is enough at the right side.
*1
The outdoor units require necessary space to unscrew on
the rear side for maintenance and if a sufficient maintenance
space is provided on the rear side (400 mm), the space of
over 150 mm is enough at the right side.
*2
When using the air-discharge chamber : 1000 mm or more
* When using the air-discharge chamber : 500 mm or more
* When using the air-discharge chamber : 1000 mm
or more
150 mm or more
150 mm or more
250 mm or more
*1
250 mm or more
*1
150 mm or more
250 mm or more*
250 mm or more*
250 mm or more*
200 mm
or more
1000 mm
or more*
300 mm
or more
1500 mm or more
*2
(1500 mm or more)
300 mm or more
2000 mm or more *
(300 mm or more)
500 mm or more
00̲280220̲2WAY̲Eng.indb 19
2016/06/09 18:11:00
20
Without snow- proof ducting (Low platform)
With snow- proof ducting (High platform)
2-4. Precautions for Installation in Heavy Snow Areas
(1)
The platform should be higher than the max. snow depth.
(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.
2-2. Air-Discharge Chamber for Top Discharge
Be sure to install an air-discharge chamber in the field when:
●
it is difficult to keep a sufficient space between the air
discharge outlet and an obstacle.
●
the air discharge outlet is facing a sidewalk and discharged
hot air may annoy passers-by.
In regions with significant snowfall, the outdoor unit should be provided with a platform and snow-proof duct.
2-3. Installing the Outdoor Unit in Heavy Snow Areas
In locations with strong wind, snow-proof ducting should be
fitted and direct exposure to the wind should be avoided as
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:
a)
The outdoor fan may not run and damage to the unit may
occur.
b)
There may be no air flow.
c)
The tubing may freeze and burst.
d)
The condenser pressure may drop because of strong wind,
and the indoor unit may freeze.
Air discharge
Outdoor Unit
Duct
Duct
Higher than the maximum snow depth + 500 mm
Air intake
Platform (foundation)
Air intake
00̲280220̲2WAY̲Eng.indb 20
2016/06/09 18:11:01
00̲280434̲Mini̲VRF̲Mentsuke.indb 12
00̲280434̲Mini̲VRF̲Mentsuke.indb 12
2016/06/16 11:37:36
2016/06/16 11:37:36
