General Information

Application

• VAV dual duct terminal unit for use in ventilation and air conditioning systems
• Supply air control in dual-duct volume flow systems
• Closed-loop volume flow control using an external power supply
• For maximum acoustic and thermal comfort
• Demand-based mixing of cold and warm air
• Shut-off by means of switching (by others)

Special features

• Integral effective pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
• Integral attenuator with at least 26 dB insertion loss at 250 Hz
• Factory set-up or programming and aerodynamic function testing
• Volume flow rate can later be measured and adjusted on site; additional adjustment device may be necessary
• Inspection access according to VDI 6022

Nominal sizes

• TVM-S: 125, 160, 200
• TVM: 125, 160, 200, 250, 315, 400

Variants

• TVM-S Dual duct unit, 60° spigot arrangement
• TVM-S-D Dual duct unit with acoustic cladding, 60° spigot arrangement
• TVM: Dual duct unit, 90° spigot arrangement
• TVM-D: Dual duct unit with acoustic cladding, 90° spigot arrangement
• 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 sensors for volume flow rate measurement, one in the cold air flow and in the total air flow respectively
• Damper blade
• Integral attenuator
• Inspection access
• 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

• Compact controller: Compact unit consisting of controller with potentiometers, effective pressure transducer and actuator

Accessories

• Double lip seals (factory-fitted)

Useful additions

• Secondary silencer Type TS

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 is fitted after the damper blade for optimum 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 made of 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
• DIN 1946, Part 4
• Further standards, guidelines in accordance with hygiene certificate

Casing leakage

• EN 1751, Class B

Closed blade leakage
Nominal sizes 125 and 160

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

Nominal sizes 200 to 400

• EN 1751, Class 4
• Fulfilment of 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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Product Information

Certificates

Operation Manuals