Biddle IndAC Manual de usuario descargar pdf (Pagina 5)

Selection

An air curtain should be selected so that it has sufficient capacity to heat up the cold

entering air to a comfortable temperature. Additionally, the unit should be able to

screen off the entire doorway. The selection of an appropriate air curtain depends on:

1. Door height or width

2. Situation (building)

1. Door height or width

The door height or width is measured from the bottom or side of the unit. These are

known data, so based on the table at the bottom of this page it is easy to select

your air curtain. It is important for the air curtain to be positioned close to the door

with a minimal gap. In addition, the air curtain should be at least as wide or high as

the door opening, as a too short air curtain will lead to air leakages on the sides or

at the top.

2. Situation (building)

The conditions at a doorway vary continuously, leading to difficulty in determining

the volume and temperature of outside air entering the building. Other aspects such

as multiple open doors in a single room, or the orientation of the building may also

have a large influence on the capacity need. To make selection easier for you, please

use the following guidelines.

• Favourable conditions: no direct wind attack, a sheltered location, internal

(inside) doors.

• Normal conditions: little direct wind attack, no open doors opposite

one another.

• Normal conditions: direct wind attack on open door, multiple open doors,

large mechanical extraction rates, location in open

country.

The above selection table is for indicative purposes only. If in doubt, please contact

Biddle for advice.

Door height/

Conditions

width

Favourable Normal Unfavourable

3 - 4 m

IndAC S IndAC S IndAC M

4 - 5 m IndAC S IndAC M IndAC L

5 - 6 m IndAC M IndAC L IndAC L-W3

6 - 8 m IndAC L - -

Mounting height, measured from the bottom or side of the unit.

The L-type will be available by mid-2007.

1 2 3 4 5 6 7 8 9 10 ... 15 16

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Biddle IndAC Manual de usuario Pagina 5