Mitsubishi Electronics PUHY-YMC Caution for snow and seasonal wind, Snow and seasonal wind

9. Caution for snow and seasonal wind

In cold and/or snowy areas, sufficient countermeasures to wind and snow damages should be taken for operating unit in normal and good condi- tion in winter time. Even in the other areas, full consideration is required for installation of unit in order to prevent abnormal operations caused by seasonal wind or snow. When rain and snow directly fall on unit in the case of air-conditioning operations in 10 or less degrees centi- grade outdoor air, mount inlet and outlet ducts on unit for assuring stable operations.

9.1. Snow and seasonal wind

■Prevention of wind and snow damages in cold or snowy areas: Refer to the figure of snow hood shown below:

•Snow hood

Note:

1.Height of frame base for snow damage prevention (H) shall be twice as high as expected snowfall. Width of frame base shall not exceed that of the unit. The frame base shall be made of angle steel, etc., and designed so that snow and wind slip through the structure. (If frame base is too wide, snow will be accumu- lated on it.)

2.Install unit so that seasonal wind will not directly lash against openings of inlet and outlet ducts.

3.Build frame base at customer referring to this figure. Material : Galvanized steel plate 1.2T

Painting: Overall painting with polyester powder

Color : Munsell 5Y8/1 (same as that of unit)

4.When the unit is used in a cold region and the heating operation is continuously performed for a long time when the outside air temperature is below freezing, install a heater to the unit base or take other appropriate measures to prevent water from freez- ing on the base.

<PUHY-400/500YMC>

1093

A 903

1888

<PUHN-200/250YMC>

1093

903

A

888

ENGLISH

1145

500

B

(840)

B

500

H (670) 821

(1990)

1145

500

B

(840)

B

500

H (670)821

(990)

AOutlet

BInlet

9.2. Countermeasure to seasonal wind

Referring to the figure shown below, take appropriate measures which will suit the actual situation of the place for installation.

AA

ASeasonal wind

11