Introduction
The document introduces the LG and LGW air curtains by Systemair, highlighting their role as comfort devices that complement ventilation, heating, and air conditioning systems. These air curtains are designed to reduce energy loss through open doors by up to 90% by creating a barrier of moving air that prevents air leakage between different environments.

Design and Features
The LG air curtain series has been redesigned for improved aesthetics and functionality, making it suitable for modern office lobbies and shop entrances. The air curtains feature an easily adjustable linear grill for optimal installation and reduced energy loss. The front air inlet allows for mounting directly against the ceiling.

Product Variants
The LG air curtain is available in 12 different versions, varying in length and heating sources, suitable for door heights up to 2.5 meters. Key specifications include:

• Lengths: 1024 mm to 2024 mm
• Heating power: 3 kW to 15 kW
• Voltage/phase options: 230~1, 400 3N~, 230~3/400~3N
• Air flow rates: 600/900 m³/h to 1900/2900 m³/h
• Sound levels: 38 dB(A) to 56 dB(A)
• Enclosure class: IP21 and IP44

Construction and Installation
The air curtains are constructed with a low noise cross-flow fan and heating elements housed in a corrosion-proof, hot-dip galvanized, powder-coated steel casing. They are designed for horizontal, fixed installation, with a recommended mounting distance of at least 50 mm from the top of the door. The units can be recessed in false ceilings.

Control and Regulation
The control panel, MP, can manage up to four LG units and can be connected to a thermostat for regulating electric heating elements. The MP can be installed inside the LG for single installations, known as MP-I. The LG0 model, which lacks heating elements, is designed to keep warm air out of cold zones and is often used in refrigerated cases and air-conditioned rooms.

Conclusion
The LG and LGW air curtains by Systemair offer a combination of elegant design and superior functionality, making them a popular choice for reducing energy loss in various environments.