TVT
July 4, 2022
TA-Silenzio
July 4, 2022

TZ-Silenzio

FOR SUPPLY AIR SYSTEMS WITH DEMANDING ACOUSTIC REQUIREMENTS AND LOW AIRFLOW VELOCITIES

Rectangular VAV terminal units for the supply air control in buildings with variable air volume systems, demanding acoustic requirements and low airflow velocities

  • Highly effective integral attenuator
  • Optimised for airflow velocities of 0.7 – approx. 7 m/s
  • High control accuracy, even in case of unfavourable upstream conditions
  • Compact construction with rectangular connections on both ends
  • Electronic control components for different applications (Easy, Compact, Universal, and LABCONTROL)
  • Closed blade air leakage to EN 1751, Class 4
  • Casing leakage to EN 1751, 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
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Description

General Information

Application

  • Rectangular VAV terminal units for use in ventilation and air conditioning systems
  • For controlling, restricting or shutting off airflows in supply air systems with low velocities and demanding 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 differential pressure control with suitable control components

Special features

  • Hygiene tested and certified
  • Direct connection to ductwork
  • 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

Nominal sizes

  • 125, 160, 200, 250, 315

Variants

  • TZ-Silenzio: supply air unit
  • TZ-Silenzio-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
  • Factory assembled control components complete with wiring and tubing
  • Aerodynamic functional testing on a special test rig prior to 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 in case of unfavourable upstream conditions

Attachments

  • Easy controller: compact unit with potentiometers
  • 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 TS
  • Heat exchanger Type WT

Construction features

  • Rectangular casing
  • Replaceable seals
  • Flanges on both ends for the connection to ductwork
  • Position of the damper blade indicated externally at shaft extension
  • Thermal and acoustic insulation (lining)

Materials and surfaces

  • Casing made of galvanised sheet steel
  • Damper blade and effective pressure sensor made of aluminium
  • Lining is mineral wool
  • 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
  • For other applicable standards and guidelines refer to the hygiene certificate

Casing leakage

  • EN 1751, Class C

Closed blade air leakage

  • 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

 

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