General Information

Application

• Circular VAV terminal units for use in ventilation and air conditioning systems
• VAV terminal units made from plastic, suitable for contaminated air
• For controlling, restricting or shutting off airflows, preferably 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 (by others)
• Can also be used for duct or room pressure control with suitable control components

Special features

• Slide-out integral effective pressure sensor with 3 mm measuring holes (resistant to contamination)
• Factory set-up or programming and aerodynamic function testing
• Parameters can also later be set on the control component; an additional adjustment device may be necessary

Nominal sizes

• 125, 160, 200, 250, 315, 400

Variants

• TVRK: VAV terminal unit
• TVRK-FL: VAV terminal unit with flanges on both ends

Parts and characteristics

• Ready-to-commission unit which consists of mechanical parts and control components.
• Averaging effective pressure sensor for volume flow rate measurement; can be removed for cleaning
• Damper blade
• Factory mounted 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 affixed to the unit
• High control accuracy (even with upstream bend R = 1D)

Attachments

• Universal controller: controller, effective pressure transducer, and actuators for special applications
• LABCONTROL: control components for air management systems

Accessories

• Matching flanges for both ends, including seals

Useful additions

• Plastic secondary silencer Type CAK for demanding acoustic requirements
  

Construction features

• Circular casing
• Spigot suitable for ducts according to DIN 8077
• Both spigots with the same diameter
• Position of the damper blade indicated externally at shaft extension

Materials and surfaces

• Casing and damper blade made of flame-resistant polypropylene (PPs)
• Effective pressure sensor and plain bearings made of polypropylene (PP)
• Damper blade seal made of chloroprene rubber (CR)
• Stainless steel shaft, material no. 14104

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 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
• Zero point correction of the static effective pressure transducer should be carried out once per year (recommendation)

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Product Information

Certificates

Operation Manuals