Type VDR

For large temperature differences in heating mode, high penetration of air, with adjustable air control blades

Circular ceiling diffusers, with manual or motorised adjustment of the air discharge direction, particularly suitable for high rooms

  • Nominal sizes 315, 400, 630, 800
  • Volume flow rate range 175 – 1495 l/s or 630 – 5382 m³/h
  • Diffuser face made of aluminium
  • For supply air
  • For variable and constant volume flows
  • Discharge direction can be adjusted manually or with an actuator
  • High penetration of air at low sound power level


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal or vertical duct connection
  • Actuators for adjusting the air discharge direction

VDR 00131770_0
  • Application
  • Description

Application

  • Type VDR ceiling diffusers are used as supply air diffusers for high rooms in comfort and industrial zones
  • For mixed flow ventilation with different air patterns in heating and cooling modes
  • Horizontal two-way supply air discharge in cooling mode
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Air discharge from 0° (horizontal) to 90° (vertical)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –10 to +15 K
  • For room heights exceeding 3.8 m
  • For suspended ceilings
  • Freely suspended installation
  • Ideal for combination with TDC temperature difference control module

Special characteristics

  • High penetration of air at low sound power level
  • Particularly suitable for rooms with varying heat loads
  • Ideal adaptation of the air discharge pattern due to two sections of adjustable blades
  • Discharge direction can be adjusted manually or with an actuator
  • Plenum box with side entry or top entry spigot, and variant with electric actuator and inspection access

Nominal sizes

  • 315, 400, 630, 800

Variants

  • Diffuser face only


Connection

  • H: Horizontal duct connection
  • V: Vertical duct connection

Parts and characteristics

  • Circular diffuser face with two sections of adjustable blades
  • Diffuser front frame
  • Spigot ring

Attachments

  • Electric actuators for adjusting the air discharge direction

Useful additions

  • TDC temperature difference control module

Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180

Materials and surfaces

  • Blades, front frame and spigot ring made of aluminium
  • Plenum box and cross bar made of galvanised sheet steel
  • Front frame, blades and spigot ring powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

  • Maintenance-free as construction and materials are not subject to wear
  • Inspection and cleaning to VDI 6022

Technical information

  • Function
  • Technology
  • Quick sizing
  • Specification text
  • Order code
Skjematisk skisse av VDR, med aktuator og plenumskammer med horisontal anslutning 00109744_0.

① Frontring
② Lamell
③ Pynteflens
④ Plenumskammer
⑤ Opphengshull
⑥ Anslutning


Valg
⑦ Aktuator og overligger
⑧ Inspeksjonsluke

Functional description

Ceiling diffusers direct the air from air conditioning systems into the room. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling diffusers allow for large volume flow rates. The result is a mixed flow ventilation for industrial and comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type VDR ceiling diffusers have adjustable blades. The air pattern can be adjusted to meet different local requirements. Horizontal air discharge is omni directional. Vertical air discharge is possible in heating mode. The supply air to room air temperature difference may range from –10 to +15 K.

An actuator (optional) adjusts the blades based on demand.

Nominal sizes315, 400, 630, 800 mm
Minimum volume flow rate175 – 695 l/s or 630 – 2502 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)320 – 1495 l/s or 1152 – 5382 m³/h
Supply air to room air temperature difference–10 to +15 K


Quick sizing – sound power level and total differential pressure

Nominal sizeVΔptLWA
Nominal sizel/sm³/hPadB(A)
315 175 630 519
315 255 918 1032
315 335 1206 1742
315 420 1512 2750
400 250 900 518
400 400 1440 1432
400 550 1980 2644
400 650 2340 3650
630 555 1998 730
630 680 2448 1138
630 805 2898 1545
630 925 3330 2050
800 556 2500 627
800 870 3132 833
800 1185 4266 1642
800 1495 5382 2550


Quick sizing – sound power level and total differential pressure

Nominal sizeVΔptLWA
Nominal sizel/sm³/hPadB(A)
315 175 630 2228
315 230 828 3837
315 280 1008 5745
315 320 1152 7450
400 250 900 1927
400 320 1152 3136
400 390 1404 4643
400 465 1674 6550
630 490 1764 2428
630 615 2214 3836
630 740 2664 5544
630 870 3132 7550
800 695 2502 2130
800 855 3078 3137
800 1015 3654 4444
800 1180 4248 5950


Quick sizing – sound power level and total differential pressure

Nominal sizeVΔptLWA
Nominal sizel/sm³/hPadB(A)
315 175 630 1029
315 230 828 1838
315 280 1008 2745
315 320 1152 3550
400 250 900 930
400 330 1188 1638
400 405 1458 2445
400 480 1728 3350
630 490 1764 1827
630 650 2340 3236
630 810 2916 4944
630 970 3492 7150
800 695 2502 1528
800 940 3384 2736
800 1190 4284 4344
800 1450 5220 6450


Ceiling diffusers with circular diffuser front frame, for comfort and industrial zones. For supply air only. Diffuser face with adjustable air control blades for air discharge from horizontal (0°) to vertical (90°) For freely suspended installation and for suspended ceilings.

Ready-to-install component which consists of the diffuser face with diffuser front frame and adjustable air control blades, a plenum box with equalising element, side entry or top entry spigot, and suspension holes or suspension lugs.

Spigot suitable for ducts to EN 1506 or EN 13180.

Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Special characteristics

  • High penetration of air at low sound power level
  • Particularly suitable for rooms with varying heat loads
  • Ideal adaptation of the air discharge pattern due to two sections of adjustable blades
  • Discharge direction can be adjusted manually or with an actuator
  • Plenum box with side entry or top entry spigot, and variant with electric actuator and inspection access

Materials and surfaces

  • Blades, front frame and spigot ring made of aluminium
  • Plenum box and cross bar made of galvanised sheet steel
  • Front frame, blades and spigot ring powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 315, 400, 630, 800 mm
  • Minimum volume flow rate: 175 – 695 l/s or 630 – 2502 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 320 – 1495 l/s or 1152 – 5382 m³/h
  • Supply air to room air temperature difference: –10 to +15 K

00133926_0

 Type
VDR       Takventil

 Anslutning
          Ingen oppføring: kun ventilfront
H       Horisontal, med plenumskammer
V       Vertikal, med plenumskammer

 Regulering
          Ingen oppføring: manuell
       Elektrisk aktuator
E1       230 V AC, 3-punkt
E2       24 V AC/DC, 3-punkt
E3       24 V AC/DC, modulerende 2 – 10 V DC

 

 Nominell størrelse [mm]
315
400
630
800

 Eksponerte overflater på ventilfronten
          Ingen oppføring: pulverlakkert RAL 9010, hvit
P1       Pulverlakkert, spesifiser RAL CLASSIC farge

       Glans nivå
       RAL 9010 50 %
       RAL 9006 30 %
       Alle andre RAL farger 70 %

 

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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.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265