Air Handling Units Systemair Sense Compact decentralised ceiling air handling unit for school premises
Fresh and clean air contributes to greater concentration during the learning process, providing a healthy and comfortable indoor environment. ...that all makes sense. sense a healthy learning environment at your classroom. Fresh air improves exam results and enhances student and staff productivity.
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Systemair Sense Decentralised compact air handling unit for ceiling installation up to An ideal solution for both new and existing buildings. Its quiet operation makes it a perfect choice for schools, offices and conference rooms.
Ventilation is crucial In poorly ventilated indoor areas with a large number of people, the concentration of CO2 in the air may exceed the recommended values. This can negatively affect people’s health and well-being. Healthy indoor environment Outdoor Optimum environment indoor CO2 level Poor indoor air quality Maximum recommended indoor CO2 level CO2 concentrations above this level are not suitable for healthy living. It can start to affect your health.
Quick overview As the unit is fully exposed in the room, its design is adapted accordingly. Properly specified and positioned components are essential for energy efficient operation of the unit. Housing The unit is delivered in one piece. The frameless housing is made of painted aluminium sheet (RAL 9010), which makes the unit lighter and more compact. To optically lower the device, a darker strip (RAL 7016) is placed along the entire length of the unit, incorporating the discharge air grille.
Supply air discharge grille Double-row painted aluminium grille (RAL 7016) on the discharge side. Two-sided adjustable blades allow the air direction to be set according to the user’s preference. Grilles achieve an effective air throw with good acoustic performance. Doors and panels Side-opening hinged doors allow easy access to the interior of the unit for service and maintenance. The design of the door requires only 517/625 mm of free space under the unit.
Control system Simplified connection, configuration and control The powerful controller built into Sense air handling units allows you to change and set a wide range of built-in functions. The controller enables user to set any operating parameters, or select preset functions, and manage the device remotely via an app or the cloud. Controller Siemens controller provides reliable and easy control of the built-in components and accessories.
Touch screen HMI as standard Modern design, user friendly and clear display, quickly accessible settings and performance monitoring 5 quickly accessible modes Boost • Minimum • Medium • Nominal This function helps to bring as much fresh air as possible into the room. • Auto • Boost • 3 adjustable fan speed setpoints • 3 adjustable temperature setpoins This mode is usually used during breaks, when the units may be less quiet.
Function overview Standard and extended device control options Depending on the choice of control mode and the use of accessories, the device can extend all the operating possibilities not offered by the standard version. For more details on the control options, see the table below. Manual or Auto? CO2 sensor (Accessory) Usually, the units are set to operate automatically, but in particular circumstances, the user can use special operating modes that can be set manually according to the requirements.
Functional diagram The working functions are performed by carefully selected components and their positioning within the unit. A2 B6+CO2 M3 FS1 FS2+FS3 B1 B3 DB B6+CO2 A2 M3 FS1 Room sensor FS2+FS3 B1 B5 M1 Room sensor B3 DB M1 ODA ETA ODA ETA HE1 CHE A1 CHE A1 B4 B4 B2 M2 B2 M2 EHA SUP EHA SUP Electric preheater (HE1) The preheater protects against too low outdoor air temperature entering the heat exchanger.
Technical data Performance SNX700 Pa 900 800 1000 700 600 bo 500 os boost 800 t 600 400 nom 300 200 nom 400 med 100 med 200 min min 0 0 0 200 400 600 800 1000 1200 1400 m3/h - - - Non-applicable area Minimal flow** [m3/h] Unit Medium flow ** [m3/h] 0 250 500 750 Nominal flow** [m3/h] 1000 1250 SNX 700 350 500 700 900 500 700 1000 1450 ** Factory set values. Values can be modified by the user.
Accessories Circular wall grille Rectangular wall grille A weather protection aluminium grille for installation in exterior walls. The grille is used in ductwork for supply and exhaust air, available in size 315mm DN and has a mesh bird screen. Other RAL colours possible on request. A weather protection aluminium grille for installation in exterior walls. The grille protects the outside supply and exhaust wall openings against water penetration, available in size 350x350 mm.
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Contact your sales representative for a more detailed unit calculation and technical data. ...this makes sense.
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