Constant Volume Dampers Type ‘EN’
FOR THE PRECISE CONTROL OF NORMAL AND HIGH CONSTANT VOLUME FLOWS
Rectangular self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems
- Suitable for volume flow rates up to 12,096 m³/h or 3,360 l/s
- Volume flow rate can be set using an external scale, no tools required
- High control accuracy
- No on-site test measurements required for commissioning
- Suitable for airflow velocities of up to 8 m/s
- Casing air leakage to EN 1751, up to class C
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Product Information
Optional equipment and accessories
- Acoustic cladding for the reduction of case-radiated noise
- Secondary silencer Type TX for the reduction of air-regenerated noise
- Hot water heat exchanger of Type WT for reheating the airflow
- Actuator for switching between setpoint values
- EN: Volume flow controller
- EN-D: Volume flow controller with acoustic cladding
- Units with acoustic cladding and/or secondary silencer Type TX for demanding acoustic requirements
- Acoustic cladding cannot be retrofitted
- Galvanised sheet steel
- P1: Powder-coated, silver grey (RAL 7001)
- Ready-to-commission controller
- Damper blade with low-friction bearings
- Bellows that acts as an oscillation damper
- Cam plate with leaf spring
- Scale with pointer to set the volume flow rate setpoint
- Aerodynamic function testing of each unit on a special test rig prior to shipping
- Min/Max actuators: Actuators for switching between minimum and maximum volume flow rate setpoint values
- Modulating actuators: Actuators for the stepless adjustment of volume flow rates or to switch between minimum and maximum volume flow rate setpoint values
- Retrofit kits: Actuators and installation accessories
- EN with actuator only up to H = 300 mm
- Secondary silencer Type TX
- Heat exchanger Type WT
- Rectangular casing
- Flanges on both sides, suitable for duct connection
- Volume flow controllers from H = 400 mm are fitted with two damper blades and two volume flow rate scales
- Casing and damper blade made of galvanised sheet steel
- Leaf spring made of stainless steel
- Polyurethane bellows
- Plain bearings with PTFE coating
- Casing and damper blade made of galvanised sheet steel, powder-coated
- Acoustic cladding made of galvanised sheet steel
- Rubber profile for the insulation of structure-borne noise
- Lining is mineral wool
- To EN 13501, fire rating class A1, non-combustible
- RAL quality mark RAL-GZ 388
- Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
- Casing air leakage to EN 1751, class C (B + H ≤400, class B)
- Maintenance-free as construction and materials are not subject to wear