Description
FOR NORMAL AND HIGH VOLUME FLOW RATE RANGES AND LOW-LEAKAGE SHUT-OFF
Rectangular air terminal units for standard applications in supply air or extract air systems with variable volume flow rates, suitable for low-leakage shut-off
- For volume flow rate ranges up to 28836 m³/h or 8010 l/s
- Suitable for the control of volume flow rate, room pressure or duct pressure
- Electronic control components for different applications (Easy, Compact, Universal, and LABCONTROL)
- High control accuracy
- Closed blade air leakage to EN 1751, class 3
- Casing air leakage to EN 1751, up to class C
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
Application
- Rectangular VAV terminal units for use in ventilation and air conditioning systems
- For controlling, restricting, or shutting off supply and extract air flows
- Closed-loop volume flow control using an external power supply
- For variable or constant volume flow systems
- Shut-off by means of switching (equipment supplied by others)
- Can also be used for duct or room pressure control with suitable control components
Special features
- Integral effective pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
- Factory set-up or programming and aerodynamic function testing
- Parameters can also later be set on the control component. Depending on the control component, an additional adjustment device may be necessary
Nominal sizes
- 36 nominal sizes from 200 × 100 to 1000 × 600
- Not all attachments may be available or suitable for all sizes of terminal units
Variants
- TVT: VAV terminal unit
- TVT-D: VAV terminal unit with acoustic cladding
- Units with acoustic cladding and/or secondary silencer Type TX for demanding acoustic requirements
- Acoustic cladding cannot be retrofitted
Construction
- Galvanised sheet steel
- P1: Powder-coated, silver (RAL 7001)
Parts and characteristics
- Ready-to-commission unit which consists of mechanical parts and control components
- Averaging effective pressure sensor for volume flow rate measurement
- Damper blades
- Factory assembled control components complete with wiring and tubing
- Aerodynamic functional testing on a special test rig before shipping of each unit
- Set-up data is given on a label or volume flow rate scale affixed to the unit
- High volume flow rate control accuracy
Attachments
- EASY controller: compact unit consisting of controller with potentiometers, effective pressure transducer and actuator
- Compact controller: compact unit consisting of controller with potentiometers, effective pressure transducer and actuator
- Universal controller: controller, effective pressure transducer, and actuators for special applications
- LABCONTROL: Control components for air management systems
Useful additions
- Secondary silencer Type TX for demanding acoustic requirements
- Heat exchanger Type WT
Construction features
- Rectangular casing
- Flanges on both ends, suitable for duct connection
- Opposed blade action, blades connected by internal gears (enclosed) at both ends
- Damper blades with replaceable seals
- Position of the damper blade indicated externally at shaft extension
- Bearings with ring seals
Materials and surfaces
Galvanized sheet steel construction
- Casing made of galvanized sheet steel
- Shaft and linkage made of galvanized steel
- Damper blades and effective pressure sensor made of aluminum
- Gears made of anti-static plastic (ABS), temperature resistant to 50 °C
- Plastic plain bearings
Powder-coated construction (P1)
- Casing made of galvanized sheet steel, powder-coated
Variant with acoustic cladding (D)
- Acoustic cladding made of galvanized sheet steel
- Rubber seal for the insulation of structure-borne noise
- Lining is mineral wool
Mineral wool
- To EN 13501, fire rating Class A1, non-combustible
- RAL quality mark RAL-GZ 388
- Non-hazardous to health thanks to being highly biosoluble in accordance with the Ordinance on Hazardous Substances and Note Q of the European Directive (EC) No. 1272/2008
Standards and guidelines
Fulfils the hygiene requirements of
- EN 16798, Part 3
- VDI 6022, Sheet 1
- DIN 1946, Part 4
- For other applicable standards and guidelines refer to the hygiene certificate
Casing leakage
- EN 1751, Class C; if B + H ≤ 400, Class B
Closed blade air leakage
- EN 1751, Class 3
- Meets the general requirements of DIN 1946, part 4, with regard to the acceptable closed blade air leakage
Maintenance
- Maintenance-free as construction and materials are not subject to wear
Literature
- Product Brochure
- Product IOM
- Installation and commissioning instructions Easy Controller