The link or location you used does not exist or was moved. For the fastest assistance, please try one of the following options: Thank you for visiting FDA.gov. Classvent Quiet to ErP 2018 Variable control for both air volume and heating Low Noise Breakout with Optional Cooling to meet BB93 Feb 2015 and TM52 Specifications To reduce boost ventilation noise to conform to BB93 Feb 2015, duplex fans are run together to produce no change in tone or noise level in boost operation. The classvent maintains levels of temperature and CO² with variable control of both air volume and heating. Heat recovered from the exhaust air is transferred to the fresh air to reduce the LPHW heating load. The system responds quickly to occupancy changes. When unoccupied the system reverts to energy saving temperature set back mode with full recirculation of air flow. the system provides uniform distribution of temperature and fresh air. Classvent provides an energy efficient solution to providing a

good environment for teaching and learning. Energy saving heat recovery. Quick response to timetable occupancy changes. Increased ventilation rates in summer. Unoccupied, reduced temperature set point. Recirculation air on start up. Energy saving variable speed fans. Energy saving fast start up just prior to occupancy. No need for pre-heat time compensation The unit is constructed with 50mm thick double skinned acoustically insulated panel. Each unit is complete with filters, fresh air/recirculation dampers, plate heat exchanger, LPHW heating coil, variable speed supply and extract fan, water pipework, 3 port valve, control panel, sensors, damper actuators and internally wired prior to testing. The unit will start up in full recirculation mode and the valve to the heating coil fully open to preheat the classroom. On occupancy the system will revert to 100 % fresh and exhaust air with room temperature control via the 3 port valve. The fan speed will be controlled to regulate the C0² level

below the stipulated 1500 parts per million level. occupancy, when the concentration is below 900 parts per million the fan speed will reduce to save energy. Free Ambient Air Cooling In winter with the high occupancy gains, there could be aThe unit will control the room air temperature and lower the supply air off coil temperature to reduce the space temperature and provide free cooling. A low limit supply air temperature of 16 Deg C is set to prevent cold draughts being provided to the area. When there is a cooling demand from the space and no cooling is available from the outside air, the supply fan will shut down and the extract run in boost to increase the air change rate within the room. The boost mode will be activated on a predetermined return air set point temperature or a manual teacher operated push button. Night Ambient Air Cooling Heat which is stored in the fabric of the building during the

daytime can be removed to reduce the temperate increaseThis function is carried out by using the lower night time ambient air and operating the unit to obtain the room set point during the night reducing the fabric gainhvac heat pump brands For more information or professional advice and assistance please contact us onhow to fix ac unit fan motorSize 400 centrifugal fans measured in an air handling unitwhat to do when ac unit freeze up Leading the way: The new RadiPac, our highly integrated plenum fan system, is the new standard for air handlers, as confirmed by ILK Dresden*. Compact motorVariable speed driveMODBUS controlAirfoil impellerCustom inlet coneRugged mounting structureAll-in-all, modification of the flow machine and the motor brought about a more than 8% increase in the efficiency of the RadiPac fans.

This can be seen from the difference between the green and black curves.The full expert report of the ILK in Dresden can be viewed The results of the optimisation process are impressive, as shown by the "old" versus "new" comparison in Fig 1.All-in-all, modification of the flow machine brought about an efficiency increase of more than 10%. At the same time the noise level dropped by more than 3 dB(A). The extra efficiency is converted into higher air flows, i.e. the new fans attain higher operating points.The corresponding measurements were taken on an officially certified (TÜV) aeroacoustic fan test stand (c.f. text: Certified test stand) which permits the simultaneous recording of air performance data and noise values. This chamber or combination test rig consists of two low-reflection half chambers with high-impedance floor conforming to accuracy class 1 for acoustic measurements. Air performance measurements can be conducted at an air flow of up to 100,000 m³/h with a static pressure increase of up to 3,000 Pa.

Better performance - even compared to the competition ebm-papst does not shy away from comparison with commercially available, highly efficient fan concepts and comes out well on top. The two sizes 400 and 560 were used for comparison and the measurements were taken in the same installation situation closely resembling real usage conditions.The ebm-papst RadiPac (green curve) was challenged by: A manufacturer who also develops EC external rotor motors (blue) andA company which uses corresponding control electronics (red) with PM internal rotor motors (permanent magnet).The diagram shows air performance, overall efficiency and noise generation. The characteristic curves speak for themselves. As a certified manufacturer, ebm-papst fully conforms to the following criteria as specified for test stands by the guidelines of the AHU manufacturers’ association: "An expert report/test report for fans will be accepted if testing was performed in accordance with the latest standard DIN EN ISO 5801:12-2010 (ISO 5801:2007 incl. corr. 1:2008) by a named test body on a suction-side chamber test rig and the component is manufactured without any modifications."