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TVT  

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

 

 


General Information

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 characteristics

  • 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


Material and surfaces

  • Galvanised sheet steel construction
  • Casing made of galvanised sheet steel
  • Shaft and linkage made of galvanised steel
  • Damper blades and effective pressure sensor made of aluminium
  • Gears made of anti-static plastic (ABS), temperature resistant to 50 °C
  • Plastic plain bearings

Powder-coated construction (P1)

  • Casing made of galvanised sheet steel, powder-coated

Variant with acoustic cladding (D)

  • Acoustic cladding made of galvanised 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

Technical information

  • Function
  • TECHNICAL DATA
  • SPECIFICATION TEXT
  • ORDER CODE
Schematic illustration of the TVT TVT_gc_02ai.png

① Effective pressure sensor

② Damper blade with seal

③ Gears

④ Control components, e.g. an Easy controller

The VAV terminal unit is fitted with an effective pressure sensor for measuring the volume flow rate. The control components (attachments) include an effective pressure transducer that transforms the effective pressure into an electric signal, a controller, and an actuator; the control functions can be achieved with an Easy controller or with a Compact controller or with individual components (Universal or LABCONTROL). For most applications, the setpoint value comes from a room temperature controller. The controller compares the actual value with the setpoint value and alters the control signal of the actuator if there is a difference between the two values.

 


Downloads

product information

certificates

operation manuals

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265