FANS FOR ROUND DUCTS Application Inline fans for supply and extract ventilation of various commercial and industrial premises requiring powerful air flow. The fans are compatible with Ø 355 and 400 mm air ducts. VENTS BOOST 355-400 VENTS BOOST 355-400 EC Inline fans in a polymer casing with the air flow of up to 5700 m3/h Speed control AC fans are controlled by either a P3-5,0 three-stage or a smooth thyristor speed controllers, connected to the maximum speed terminal. EC models are regulated by a smooth 0-10 V controller. Design The fan casing is made of polymer and reinforced with a metal housing. Due to the conically-shaped polymer impeller with specially profiled blades the air stream circular velocity increases, which results in higher air flow and pressure as compared to characteristics of standard axial fans. The specially designed diffuser, impeller and airflow rectifier at the fan outlet provide smooth air flow distribution and enable the best combination of high air flow, increased pressure and low noise. The fan casing is equipped with an airtight terminal box for connection to power mains. Mounting The fans can be mounted at any place and at any angle within the ductwork system. Several fans can be installed in one system in parallel to attain higher air flow or in series to increase operating pressure in the system. The fan casing is equipped with fixing brackets for floor, wall or ceiling mounting. The fans can be mounted using KM-BOOST brackets of the appropriate size (purchased separately). Motor The line features three-speed four-pole asynchronous motors and energy-efficient EC motors. BOOST 355 BOOST 355 EC BOOST 355 EC S Overall dimensions of brackets

Technical data BOOST 355 Speed Sound pressure level at 3 m distance [dBA] Maximum transported air temperature [°C] Protection rating Motor protection rating VENTS BOOST VENTS BOOST Hz Gen. 63 LwA to inlet dBA 69 50 0 dBA 10069 200 LwA to outlet 56 600 LwA to environment dBA 63 42 10 V    Sound-power level, A -filter Air flow [m3/h]    Sound-power level, A -filter

Maximum transported air temperature [°C] 50 Motor protection rating 110 Sound pressure level at 3 m distance [dBA] FANS FOR ROUND DUCTS 150 150 VENTS BOOST VENTS BOOST LwA to inlet LwA to outlet LwA to environment Air flow [m3/h]    Sound-power level, A -filter    Sound-power level, A -filter LwA to inlet LwA to outlet LwA to environment

min Sound pressure level at 3 m distance [dBA] Maximum transported air temperature [°C] VENTS BOOST Air flow [l/s] 100 Air flow [m3/h]    Sound-power level, A -filter LwA to inlet LwA to outlet LwA to environment