Exhaust Fans ED 24 Exhaust Fan ED 24 ED24 is the ideal exhaust fan whenever high airflow capacity is required. The unique propeller design is self – cleaning and allows the highest efficiency to be reached. The square fan housing and air conveyor (venturi) are made of a strong galvanised sheet-steel. The 6-blade propeller is statically and dynamic balanced for low noise and low vibration. The propeller is available in stainless steel, galvanised steel and pre-coated and galvanised steel. To improve aerodynamic efficiency, the fan has been developed in Munters euroemme’s R&D lab. The test chamber has been built according to ANSI / AMCA 2 10-85 Figure 15 specifications. Construction details and airtightness have been verified by personnel of the BESS Lab at the Agricultural Engineering Department, University of Illinois – USA. Propeller and Shutter The propeller is directly coupled with motor. The shutter is made of galvanised steel for all models, which is stronger than aluminium and plastic. The fan shutter is tightly closed when the fan is not working reventing any air leakage through the fan. The patented centrifugal system hinders shutter from being closed by air pressure, keeping the efficiency of the fan at a peak at all times by keeping the shutter fully and firmly opened. The shutter does not have to be cleaned regularly as dust does not affect its opening and closing movement. All the plastic parts are made of acetalic plastic with UV protection. Equipment Fan housing and venturi made of strong galvanised sheet-steel Shutters are made of pressed galvanised steel in order to assure highest strength Each motor is individually tested for 100% quality control Propeller is statically and dynamically balanced Shutter bearings are maintenance free Patented centrifugal system permits a fully and firm opening of the shutter Shutter is opened by rotating weights placed over centrifugal system arms Shutter opening is not affected by the weight of dust deposited on shutter blades A powerful couple of springs keep the shutters firmly closed when the fan is not operating Every fan is individually checked for quality Curve refers to ED24 3Ph 50 Hz multi speed motor. Fan lested with shutter and wire mesh. Order Information ED24-X-X-X e.g., ED24-b-2-wp-wm b : Code for electric motor according to above table. 2 : Code for the type of propeller blades. Galvanised propeller blades. Precoated propeller blades. Stainless steel propeller blades. wp-wm : Options codes wm: Fan delivered with pyramidal shape mesh for CE protection on shutter side. nm: Fan delivered without pyramidal shape mesh for CE protection on shutter side (standard) Motor Specifications ED 24 Code Nominal power Type phases Speed Frequency [hz] Voltage [V] Current [A] rpm [w] [hp] a 370 0.5 1 multi* 50 220 3.8 900 b 370 0.5 1 multi* 50 240 3.7 900 c 370 0.5 1 multi* 60 220 4.5 1,100 d 370 0.5 3 multi* 50 230 / 400 2.5 / 1.5 900 e 370 0.5 3 multi* 60 230 / 400 2.5 / 1.5 1,100 * Multi speed motors must be regulated with auto-transformer which is not supplied. Technical Specifications 05 hp Weight of fully equipped fan1 [kg] 44 Nominal propeller speed [rmp] 900 / 1,100 Airflow at 0 Pa1 [m3/h] [cfm] 10,600 [6,240] Airflow at 20 Pa1 [m3/h] [cfm] 9,780 [5,750] Specific performance at 0 Pa1 [m3/wh] [cfm/w] 12.5 [7.3] Propeller diameter [mm] [inch] 600  Number of blades 6 Number of shutter blades 5 IEC protective class of electric motor IP55 Electric motor winding insulation grade B 1 All values refer to 3 phases 50 Hz motor. N.B Airflow data are measured at standard condition (20 °C, 1013 hPa). ED 24 is developed and produced by Munters euroemme S.p.A., Italy.