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VAV terminal unit, variant TVZ

  • VAV terminal unit for variable supply air volume flow control

TVZ_img_01psd.png
Easyregler-Compactregler_img_01_2020_01_DE__5_psd.psd.link
TU-ELAB-Regler_img_01_2020_01_DE__8_psd.psd.link
TVZ_img_06psd.png

TVZ   

For supply air systems with demanding acoustic requirements


VAV terminal units for the supply air control in buildings with variable air volume systems and demanding acoustic requirements

  • Highly effective integral attenuator
  • Box style construction for the reduction of the airflow velocity
  • Electronic control components for different applications (Easy, Compact, Universal, and LABCONTROL)
  • Closed blade air leakage to EN 1751, up to class 4
  • 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 TS 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 the supply air flow in systems with high acoustic requirements
  • Integral attenuator
  • Closed-loop volume flow control using an external power supply
  • For variable or constant volume flow systems
  • Shut-off by means of switching (by others)
  • Can also be used for duct or room pressure control with suitable control components



Special features

  • Integral attenuator with at least 26 dB insertion loss at 250 Hz
  • Hygiene tested and certified
  • Factory set-up or programming and aerodynamic function testing
  • Parameters can also later be set on the control component; additional adjustment device may be necessary
  • Inspection access according to VDI 6022



Nominal sizes

  • 125, 160, 200, 250, 315, 400



Variants

  • TVZ: Supply air unit
  • TVZ-D: Supply air unit with acoustic cladding
  • Units with acoustic cladding and/or secondary silencer Type TS for very demanding acoustic requirements
  • Acoustic cladding cannot be retrofitted



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 blade
  • Integral attenuator
  • Inspection access
  • 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 control accuracy (even with upstream bend R = 1D)



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



Accessories

  • Double lip seal (factory fitted)



Useful additions

  • Secondary silencer Type TS
  • Heat exchanger Type WT



Construction features

  • Rectangular casing
  • Spigot on the fan end suitable for circular ducts to EN 1506 or EN 13180
  • Spigot with groove for double lip seal
  • Connection on the room end suitable for ducts
  • Baffle plate, downstream of the damper blade, for achieving the best possible acoustic and aerodynamic performance
  • Position of the damper blade indicated externally at shaft extension
  • Thermal and acoustic insulation (lining)



Materials and surfaces

  • Casing and damper blade made of galvanised sheet steel
  • Damper blade seal made of TPE plastic
  • Lining is mineral wool
  • Effective pressure sensor made of aluminium
  • Plastic plain bearings
  • Shaft and linkage: Galvanised steel


Variant with acoustic cladding (-D)

  • Acoustic cladding made of galvanised sheet steel
  • Lining is mineral wool
  • Rubber elements for the insulation of structure-borne noise


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
  • Faced with glass fibre fabric as a protection against erosion from airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth



Standards and guidelines

Fulfils the hygiene requirements of

  • EN 16798, Part 3
  • VDI 6022, Sheet 1
  • DIN 1946, Part 4
  • Further standards, guidelines in accordance with hygiene certificate


Casing leakage:

Nominal sizes 125 – 200

  • EN 1751, Class C

Nominal sizes 250 – 400

  • EN 1751, Class B

Closed blade air leakage:

Nominal sizes 125 – 160

  • EN 1751, Class 3
  • Meets the general requirements of DIN 1946, Part 4, with regard to the acceptable closed damper blade air leakage

Nominal sizes 200 – 400

  • EN 1751, Class 4
  • Meets the increased 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, Quick sizing, Specification text, Order code, Related Products

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
  • RELATED PRODUCTS
Schematic illustration of the TVZ TVZ_gc_04ai.png

① Effective pressure sensor

② Double lip seal

③ Inspection access

④ Damper blade

⑤ Integral attenuator

⑥ 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.

An integral attenuator reduces the noise that is created by the restriction of the airflow.

The airflow velocity at the room end is, due to the larger rectangular cross section, about half the velocity in the circular duct.

 


Variants, Dimensions and weight, Product details, Control Components

  • VARIANTS
  • DIMENSIONS AND WEIGHT
  • PRODUKT DETAILS
  • CONTROL COMPONENTS


Flange detail, Dimensions and weight

  • FLANGE DETAIL
  • DIMENSIONS AND WEIGHT
Flange detail 00078794_0ai.ai.link

1 Compressible seal, to be provided by others
2 Flanges on both ends indented by approx. 12 mm
3 Flange
4 Duct
5 VAV terminal unit

Downloads

product information

brochures

certificates

operation manuals

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Thank you for your message!

Your message is send and will be processed shortly.
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