• TYPES OF INSTALLAION FOR AIR CURTAIN SYSTEMS

    An important part of correctly designing an air curtain system is the situation of the building. Two different installation variations are used depending on whether there is excess pressure or low pressure in the building: IDW or ADW installation.

    Various device options within these two types of installation make it possible to achieve the optimal effect for the building conditions concerned.

    IDW INSTALLATION

    IDW INSTALLATION

    Air roll rotating inwards.

    Air is drawn in from the direction of the building and discharged above the door. This creates an air roll whose direction of rotation is directed into the room. This IDW method for installing an air curtain system is in principle the most favourable method in terms of energy. The preferred application area: to equalise pressure or where there is excess pressure. For small and medium-sized buildings where no employees are permanently stationed in the door area.
    ADW INSTALLATION

    ADW INSTALLATION

    Air roll rotating outwards.

    Air is drawn in above the door and the discharge nozzle is in the building. This creates an air roll whose direction of rotation is directed outside, counteracting the cold air flowing into the building. This achieves a marked increase in the screening performance. There is less air movement in the entrance area. As a result of the lower temperatures in the air intake area, the heat output is greater than with the air roll rotating inward type of installation IDW. A frost protection thermostat should be provided with the ADW installation. The preferred application area: where there is low pressure.
  • INSTALLATION TYPE 1 – ASSEMBLY DIRECTLY ON THE DOOR

    For buildings without covered entrance the most common type of installation for air curtain systems is directly on the door. For smaller buildings or stores with moderate wind load, the air is drawn from the inside of the building to the back of the device (installation type 1.1).

    With medium-sized and larger entrance areas with the ability to combine more than one device, installation type 1.2 is advisable; here the device directly captures the air roll again at the bottom for air intake.

    Outdoor air can be added to the air intake where greater screening performance is required and to equalise pressure differences; the air roll rotates outwards (installation type 1.3).

    1.1

    INSTALLATION TYPE 1.1

    Air roll rotating inwards (IDW) – air intake at the front from inside the building

    The air roll develops a different depth of penetration into the room depending on the local conditions. This design is compact and requires the least energy because indoor air is used.
    Type of use:
    Small and medium-sized systems

    Application area:
    • For pressure equalisation or excess
      pressure in the building
    • With moderate wind load
    • In closed arcades in a reasonably sheltered position or with a covered entrance
    1.2

    INSTALLATION TYPE 1.2

    Air roll rotating inwards (IDW) – air intake underneath from inside the building

    The penetration depth into the room is less, the device is supplemented by the air intake chambers.
    Type of use:
    Single units and groups of units of
    any width and larger air volume

    Application area:
    • For moderate and medium wind load
    • Also for slightly exposed positions
    1.3

    INSTALLATION TYPE 1.3


    Air roll rotating outwards (ADW) – air intake underneath

    Almost no circulation forms inside the building. Mixing outdoor air and the associated reduction in pressure differences produces a distinctly higher screening performance, however energy requirements also increase.
    Type of use:
    Single units and groups of units of any width and larger air volume

    Application area:
    • Pressure equalisation and low pressure (e.g. several floors)
    • Common wind loads and unfavourable shop locations
  • INSTALLATION TYPE 2 – ASSEMBLY IN A COVERED ENTRANCE

    The most versatile types of installation are possible when installed in combination with covered entrances. Depending on the depth and design of the covered entrance, its function can be lost as from a certain amount of customer throughput. A correctly installed air curtain system can counteract this. The type of installation used with covered entrances will depend on the building situation, the type of use, the interior design and installation space.

    INSTALLATION TYPE – ASSEMBLY IN A COVERED ENTRANCE

    The air roll circulates inside the covered entrance which then maintains its temperature. What is more, the operating noise of the air curtain is reduced in the covered entrance.

    2.1

    INSTALLATION TYPE 2.1

    Air roll rotating inwards (IDW) – assembly on the outer door, air intake at the front

    The covered entrance remains warm, the outside air is blocked at the first door, keeping energy requirements low.
    Application area:
    • Single storey building without doors opposite
    • Balanced pressure conditions
    • Generally low requirements
    • No employees working in and behind the
      covered entrance
    2.2

    INSTALLATION TYPE 2.2

    Air roll rotating outwards (ADW) – assembly on the outer door, air intake underneath

    The covered entrance remains warm, the outside air is blocked at the first door. Screening is reinforced, but there are increased energy requirements.
    Application area:
    • An inward flowing air current is interrupted
    • Single and multi-storey buildings, also with doors opposite
    • Employees working in and behind the covered entrance
    2.3

    INSTALLATION TYPE 2.3

    Mixing outdoor air and a reduction in pressure differences produces a distinctly higher screening performance with moderate energy requirements.

    Application area:
    • Single and multi-storey buildings, also with doors opposite
    • Employees working behind the covered entrance
  • INSTALLATION TYPE – ASSEMBLY IN THE BUILDING WITH COVERED ENTRANCE IN FRONT

    Installation Type – Assembly in the building with covered entrance in front

    The covered entrance remains cold, the system contributes continuously to heating the room.

    2.4

    INSTALLATION TYPE 2.4

    Air roll rotating inwards (IDW) – assembly on the inner door, air intake at the front

    The air roll runs inwards into the building. It incorporates and warms a relatively large area in the air change. Energy requirements are kept low.
    Application area:
    • Single and multi-storey buildings
    • No employees working directly and unprotected behind the covered entrance
    2.5

    INSTALLATION TYPE 2.5

    Air roll rotating outwards (ADW) – assembly on the inner door, air intake underneath

    The air roll primarily rotates in the direction of the outer door and also penetrates the covered entrance. The screening effect is reinforced, however energy requirements also increase.
    Application area:
    • Single and multi-storey buildings
    • Employees working directly behind the covered entrance
  • INSTALLATION TYPE 3 – VERTICAL ASSEMBLY

    Vertical devices primarily in conjunction with automatic sliding doors. Good screening results can be achieved with relatively low energy use by shifting the air discharge to the floor area.

    3.1

    INSTALLATION TYPE 3.1

    Floor-mounted on one side

    The air intake is from the inside of the room. The air is directed away from areas where people are working and other occupied areas.

    A particularly well protected area results on the side of the air intake opening.
    Application area:
    • Office buildings
    • Hospitals
    • Hotels with reception in the foyer
    • Buildings with limited installation possibilities
    3.2

    INSTALLATION TYPE 3.2

    Floor-mounted on both sides

    The air intake is from the inside of the room. The air is directed towards the centre of the door.

    Occupied areas and working areas lie only to the side of the door area or are at a distance to the door.
    Application area:
    • Shopping malls
    • Office buildings
    • Hospitals
    • Hotels with large entrances
    • Entrance areas with open connection to lower floors
    • Buildings with limited installation possibilities
    3.3

    INSTALLATION TYPE 3.3


    Diagonal in the covered entrance

    The air roll rotates as stable system inside the covered entrance.

    Most of the air volume produced is captured by the system opposite. The air circulation takes place inside the covered entrance. The double air curtain that ensues simultaneously ensures a high screening effect.
    Application area:
    • Covered entrances in single and multi-storey buildings with special air-related and visual demands
    • Employees working directly behind the covered entrance
    • Entrance situations such as those in hospitals, hotels, shopping malls etc.
    3.4

    INSTALLATION TYPE 3.4

    In conjunction with revolving doors

    The air intake occurs from the inside of the room. The air direction is adjusted by the nozzle system to approx. 20° into the door opening.

    The cold air moved through the wings of the door cannot then flow unhindered into the room, but is largely held in the revolving door.
    Application area:
    • Shopping malls
    • Office buildings
    • Hospitals
    • Hotels with revolving doors
    • and reception in the foyer.