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AIR CURTAIN SELECTION FACTORS To select an air curtain the following factors should be kept in mind: • The height of the installation measured from the discharge diffuser to the floor. • The width of the door. • The location of the building to determine the level of protection needed against weather conditions (temperature, humidity and wind). • If the building has several doors in the same area, different or opposite façade. • If the building has several storeys connected by escalators / stairs. • Pressure differences between the inside and outside of the building. • Door characteristics: if always open, it opens automatically, it opens manually, revolving door, etc... • Characteristics of the ventilation and air conditioning installation. • Voltage and electrical power availability. • Type of business, style and decoration of the premises. • Free hanging or recessed, horizontal or vertical installation, heated or unheated, etc… Some installations with strong wind conditions may compromise the air curtain due to: severe wind, extreme temperature difference indoor/outdoor, more than one door, different levels, big halls, high pressure difference, etc… In those situations a higher performance model is recommended. |