33
English
- OPERATION AND
APPLICATION AREA
Air is drawn in at the top of the unit and blown out
downwards so that it shields the door opening and
minimizes heat loss.
To achieve the optimum curtain effect, the unit must
extend the full width of the door opening.
The efficiency of the air curtain depends on the air tem
-
perature, pressure differences across the doorway and
any wind pressure.
NOTE!
Negative pressure in the building
considerably reduces the efficiency of the
air curtain. The ventilation should therefore
be balanced.
The position for installation of the unit, to obtain the
best performance and prevent breakdowns or hazards,
must have the following requisites:
- The air curtain unit must be installed horizontally with the
supply air grille facing downwards as close to the door as
possible.
- The maximum height of installation must be 3,50 m
(fig. B ).
-The wall on which the unit is installed must be sturdy
and able to withstand its weight.
-It must be possible to leave room around the unit for
any maintenance operations that may be necessary.
-There should be no obstacles to the free circulation of
air on the intake side and, especially, on the air outlet
side; on this side, in particular, there should be no
obstacles closer than 2 m. This could cause turbulence
that would interfere with correct operation of the unit.
3,50 m
100
mm
100 mm
DOOR
DOOR
2°
(Fig. B)
m
0,1
1,0
2,0
3,0
3,5
12 m/s
5,8 m/s
4,8 m/s
4,1 m/s
3,6 m/s
