Type TVRK

For contaminated air

Plastic circular VAV terminal units for aggressive extract air in variable air volume systems

  • Casing and damper blade made of flame-resistant polypropylene
  • Slide-out differential pressure sensor allows for easy cleaning
  • Suitable for the control of volume flow rate, room pressure or duct pressure
  • Electronic control components for different applications (Universal and LABCONTROL)
  • Suitable for airflow velocities up to 13 m/s
  • Closed blade air leakage to EN 1751, class 3
  • Casing air leakage to EN 1751, class B


Optional equipment and accessories

  • With flanges on both ends
  • Matching flanges for both ends
  • Plastic secondary silencer Type CAK for the reduction of air-regenerated noise

VAV terminal unit, variant TVRK 00136348_0
  • Application
  • Description

Application

  • Circular VARYCONTROL VAV terminal units of Type TVRK, made of plastic, preferably for the extract air flow control in variable air volume systems
  • Closed-loop volume flow control using an external power supply
  • Suitable for contaminated air
  • Shut-off by means of switching (equipment supplied by others)

Special characteristics

  • Integral slide-out differential pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
  • Factory set-up or programming and aerodynamic function testing
  • Volume flow rate can be measured and subsequently adjusted on site; additional adjustment tool may be necessary

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 differential pressure sensor for volume flow rate measurement; can be removed for cleaning
  • Damper blade
  • Factory-assembled control components complete with wiring and tubing
  • Aerodynamic function 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 with upstream bend R = 1D)

Attachments

  • Universal controller: Controller, differential 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 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)
  • Differential pressure sensor and plain bearings made of polypropylene (PP)
  • Damper blade seal made of chloroprene rubber (CR)

Technical information

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code
Schematic illustration of the TVRK 00135846_0

① Differential pressure sensor

② Damper blade

③ Casing

④ Actuator

⑤ Control components, e.g. a Universal controller

Functional description

The VAV terminal unit is fitted with a differential pressure sensor for measuring the volume flow rate.

The control components (attachments) include a differential pressure transducer that transforms the differential pressure (effective pressure) into an electric signal, a controller, and an actuator; the control functions can be achieved with individual components (Universal or LABCONTROL).

For most applications, the setpoint value comes from an external setpoint adjuster.

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.

Nominal sizes125 – 400 mm
Volume flow rate range25 – 1680 l/s or 90 – 6048 m³/h
Volume flow rate control rangeApprox. 17 to 100 % of the nominal volume flow rate
Minimum differential pressure5 – 90 Pa
Maximum differential pressure1000 Pa
Operating temperature10 – 50 °C


Quick sizing: Sound pressure level at differential pressure 150 Pa

Nominal sizeVVAir-regenerated noiseAir-regenerated noiseAir-regenerated noiseAir-regenerated noiseCase-radiated noise
Nominal sizeVV
Nominal sizeVVLPALPA1LPA1LPA1LPA2
Nominal sizel/sm³/hdB(A)dB(A)dB(A)dB(A)dB(A)
125 25 90 3419<15<1517
125 60 216 4430252027
125 105 378 5138322832
125 150 540 5541353137
160 40 144 362318<1521
160 80 288 4231272328
160 145 522 4937343033
160 250 900 5341383440
200 65 234 4433282533
200 180 648 4433282534
200 310 1116 4333292635
200 405 1458 4133302935
250 95 342 3929231928
250 270 972 4535312735
250 470 1692 4435302737
250 615 2214 4435312939
315 155 558 3929242129
315 425 1530 4637332940
315 740 2664 5041373345
315 1030 3708 5344403750
400 255 918 3729252230
400 715 2574 4437333040
400 1250 4500 4942383646
400 1680 6048 5144403850

① TVRK

② TVRK with secondary silencer CAK, insulation thickness 50 mm, length 500 mm

③ TVRK with secondary silencer CAK, insulation thickness 50 mm, length 1000 mm

④ TVRK with secondary silencer CAK, insulation thickness 50 mm, length 1500 mm


Circular VAV terminal units made of PPs plastic, for variable and constant air volume systems, suitable for extract air, available in 6 nominal sizes.

High control accuracy (even with upstream bend R = 1D).

Ready-to-commission unit which consists of the mechanical parts and the electronic control components. Each unit contains an averaging differential pressure sensor for volume flow rate measurement and a damper blade. Factory-assembled control components complete with wiring and tubing.

Differential pressure sensor with 3 mm measuring holes (resistant to dust and pollution)

Spigot, suitable for ducts according to DIN 8077.

Position of the damper blade indicated externally at shaft extension.

Closed blade air leakage to EN 1751, class 3.

Casing air leakage to EN 1751, class B.

Hygiene conforms to VDI 6022

Special characteristics

  • Integral slide-out differential pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
  • Factory set-up or programming and aerodynamic function testing
  • Volume flow rate can be measured and subsequently adjusted on site; additional adjustment tool may be necessary

Materials and surfaces

  • Casing and damper blade made of flame-resistant polypropylene (PPs)
  • Differential pressure sensor and plain bearings made of polypropylene (PP)
  • Damper blade seal made of chloroprene rubber (CR)

Technical data

  • Nominal sizes: 125 to 400 mm
  • Volume flow rate range: 25 to 1680 l/s or 90 to 6048 m³/h
  • Volume flow rate control range: approx. 17 – 100 % of the nominal volume flow rate
  • Minimum differential pressure: 5 – 90 Pa
  • Maximum differential pressure: 1000 Pa

Attachments

Variable volume flow control with electronic Universal controller to switch an external control signal and an actual value signal for integration into the central BMS.

  • Supply voltage 24 V AC/DC
  • Signal voltages 0 – 10 V DC or 2 – 10 V DC
  • Possible override controls with external switches using volt-free contacts: CLOSED, OPEN, Vmin and Vmax
  • Volume flow rate control range: approx. 17 – 100 % of the nominal volume flow rate

00131618_0

 Type
TVRK       VAV terminal unit, plastic

 Flange
       No entry: none
FL       Flanges on both ends

Nominal size [mm]
125
160
200
250
315
400

 Accessories
       No entry: none
GK       Matching flanges for both ends

 

 Attachments (control component)
       Example
BB3       Universal controller with static differential pressure transducer

Operating mode
E       Single
M       Master
S       Slave
F       Constant value
Z       Differential pressure control – supply air
A       Differential pressure control – extract air

 Signal voltage range
       For the actual and setpoint value signals
0       0 – 10 V DC
2       2 – 10 V DC

 Volume flow rates [m³/h or l/s], differential pressure [Pa]
       Vmin – Vmax for factory setting
       ∆pmin for factory setting (operating modes A, Z)

 Damper blade position
       Only with spring return actuators
NO       Power off to OPEN
NC       Power off to CLOSE

 

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Contact

Thank you for your message!

Visual contact Visual contact

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.: +7 495 221-5161 | Fax: +7 495 221-5171