BZZ backflow prevention device
The BZZ damper prevents uncontrolled air flow in the opposite direction when the ventilation system is switched off.
CSR-B Controller
CSR-B EC W, CSR-B EC Zero Plus W, CSR-B EC NFC W controller
Controllers of the CSR-B series are constant pressure regulators designed for cooperation with duct and roof fans with EC motors. By continuously controlling the fan speed, they ensure constant pressure in the ventilation ducting. Based on a PI controller, CSR-B controllers have the option to set a constant fan power and programmable upper and lower fan control limits.
CSR-B EC W, CSR-B EC Zero Plus W, CSR-B EC NFC W controller
Controllers of the CSR-B series are constant pressure regulators designed for cooperation with duct and roof fans with EC motors. By continuously controlling the fan speed, they ensure constant pressure in the ventilation ducting. Based on a PI controller, CSR-B controllers have the option to set a constant fan power and programmable upper and lower fan control limits.
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TLE flexible acoustic silencers
A flexible TLE acoustic silencer is made of a perforated duct. The applied insulation is 25mm thick and covered with an aluminium-polyester jacket. The silencer is connected with metal flanges acting as a nipple. These are available in two lengths, 600mm and 1,200mm. Upon request, it is possible to manufacture silencers: with EPDM
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The TLS silencer is used in round ventilation ducts. As a standard, the silencers are delivered with a rubber seal. Inside they are filled with 50 mm thick mineral wool.