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1-11 Installation Instructions<br />
Selecting the Installation Site<br />
■ Air Discharge Chamber for Top Discharge<br />
Be sure to install the air discharge chamber in the filed<br />
when:<br />
● it is difficult to keep a space of min. 50 cm between<br />
the air discharge outlet and the obstacle.<br />
● the air discharge outlet is facing to the sidewalk and<br />
discharged hot air annoys the passers.<br />
Refer to Fig. 1-6.<br />
■ Installing the Unit in Heavy Snow Areas<br />
In positions with strong wind, snow-proof ducting<br />
should likewise be fitted and direct exposure to the<br />
wind should be avoided as much as possible.<br />
Countermeasures against snow and wind in regions<br />
with snow and strong wind, the following problems<br />
may occur when the outdoor unit is not provided with a<br />
platform and snow-proof ducting.<br />
a) The outdoor fan may not run and damage of the<br />
unit may be caused.<br />
b) There may be no air flow.<br />
c) The tubing may freeze and burst.<br />
d) The condenser pressure may drop because of<br />
strong wind, and the indoor unit may freeze.<br />
■ Precautions for Installation in Heavy Snow<br />
Areas<br />
(1) The platform should be higher than the max.<br />
snow depth. (Fig. 1-7)<br />
(2) The two fixing feet of the outdoor unit should be<br />
used for the platform, and the platform should be<br />
installed beneath the air intake side of outdoor<br />
unit.<br />
(3) The platform foundation must be firmer and the<br />
unit must be secured with anchor bolts.<br />
(4) In case of installation on a roof subject to strong<br />
wind, countermeasures must be taken to prevent<br />
the unit from being blown over.<br />
■ Dimensions of Snow / Wind-proof Ducting and<br />
Refrigerant Tubing Space for Installation<br />
Duct<br />
Duct<br />
Outdoor Unit<br />
Min. 100<br />
300<br />
Min. 100 300 Unit: mm 0489_C_I<br />
I - 102<br />
Air<br />
Intake<br />
Duct<br />
Without snowproof<br />
ducting<br />
(Low platform)<br />
Outdoor<br />
Unit<br />
About 1/2 of the<br />
unit height<br />
Fig. 1-9<br />
1. Specifications<br />
Air discharge<br />
Duct<br />
0426_C_I<br />
Fig. 1-6<br />
In regions with snow fall, the outdoor unit should be<br />
provided with a platform and snow-proof duct.<br />
Without snowproof<br />
ducting<br />
(High platform)<br />
0487_C_I<br />
Fig. 1-7 Fig. 1-8<br />
Air<br />
Intake<br />
Platform (foundation)<br />
Example of Installation<br />
Higher than the<br />
maximum<br />
snow depth<br />
0490_C_I<br />
0488_C_I
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