15
S4179544
2-1.
Air- Discharge Chamber for Top Discharge
Install the air-discharge chamber in the field when:
●
it is difficult to keep a space of 50 cm minimum
between the air-discharge outlet and the obstacle.
●
the air-discharge outlet is facing the sidewalk and
discharged hot air can annoy the passers-by.
(Fig. 2-4.)
2-2.
Installing the Unit in Heavy Snow Areas
In positions with strong wind, snow-proof ducting
should likewise be fitted and direct exposure to the
wind should be avoided as much as possible.
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 there may be
damage to the unit.
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.
2-3.
Precautions When Installing in Heavy Snow
Areas
(1)
The platform should be higher than the maximum
snow depth. (Fig. 2-5)
(2)
The two anchoring feet of the outdoor unit should
be used for the platform, and the platform should
be installed beneath the air-intake side of the
outdoor unit.
(3)
The platform foundation must be solid and the
unit must be secured with anchor bolts.
(4)
When installing on a roof subject to strong wind,
countermeasures must be taken to prevent the
unit from being overturned.
Air discharge
0426_C_I
Fig. 2-4
In regions with snow fall, the outdoor unit should be
provided with a platform and snow-proof duct.
0819_C_I
Without snow-
proof ducting
(Low platform)
Snow-proof
ducting
(High platform)
2-4.
Dimensions of Snow / Wind-Proof Ducting
and Refrigerant Tubing Space for
Installation
Duct
Duct
Outdoor Unit
Min. 100
300
Min. 100
300
Unit: mm
0489_C_I
Fig. 2-5
Fig. 2-6
Air
Intake
Platform (foundation)
Higher than the
max.
snow depth
Duct
About 1/2 of the
unit height
Air
Intake
Duct
Outdoor
Unit
0817_C_I
Fig. 2-7
Example of Installation
0490_C_I
Fig. 2-8