Type DLQ

For four-way horizontal supply air discharge, with fixed air control blades – sheet steel diffuser face

Square ceiling diffusers

  • Nominal sizes 250, 300, 400, 500, 600, 625
  • Volume flow rate range 20 – 700 l/s or 72 – 2520 m³/h
  • Square diffuser face
  • Grille face made of sheet steel, powder-coated
  • For supply and extract air
  • For variable and constant volume flows
  • For all types of ceiling systems
  • High induction results in a rapid reduction of the temperature difference and airflow velocity


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal or vertical duct connection
  • Blanking plates for adjusting the discharge direction
  • Duct cross bar for installation without plenum box
  • Plenum box with cord-operated damper blade and pressure tap

DLQ/600 00132970_0
  • Application
  • Description

Application

  • Type DLQ ceiling diffusers are used as supply air or extract air diffusers for comfort zones
  • Attractive design element for building owners and architects with demanding aesthetic requirements
  • Horizontal four-way supply air discharge for mixed flow ventilation
  • High induction results in a rapid reduction of the temperature difference and airflow velocity (supply air variant)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –10 to +10 K
  • For room heights up to 4 m (lower edge of suspended ceiling)
  • For all types of ceiling systems

Special characteristics

  • Horizontal four-way supply air discharge
  • Grille face made of galvanised sheet steel
  • For all types of ceiling systems
  • Horizontal or vertical duct connection

Nominal sizes

  • 250, 300, 400, 500, 600, 625

Variant

  • Square diffuser face


Connection

  • A: Diffuser face only
  • AR: Vertical duct connection, with connecting frame
  • AG: Vertical duct connection, with blades
  • C: Vertical duct connection with butterfly damper
  • H: Horizontal duct connection, with plenum box
  • X: Horizontal duct connection, with flexible plenum box FLEXTRO

Parts and characteristics

  • Square diffuser face with fixed air control blades
  • Diffuser front frame
  • Simple installation of the diffuser face due to central fixing screw with decorative cap

Accessories

  • Lip seal

Construction features

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

Materials and surfaces

  • Diffuser face, connecting frame and butterfly damper made of sheet steel
  • AK: Plenum box and cross bar made of galvanised sheet steel
  • X: Plenum box made of plastic and galvanised sheet steel
  • Lip seal made of rubber
  • Attachments are dip coated RAL 9005, jet black
  • Diffuser face 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
Schematic illustration of the DLQ, with plenum box for horizontal duct connection 00105341_0...

① Diffuser face
② Central fixing screw
③ Plenum box
④ Cross bar
⑤ Suspension hole
⑥ Spigot


Optional
⑦ Lip seal
⑧ Damper blade for volume flow rate balancing
⑨ Pressure tap
⑩ Green cord for closing the damper blade
⑪ White cord for opening the damper blade
⑫ Text label indicating plenum box variant
⑬ Measuring tube

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 in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type DLQ ceiling diffusers have fixed blades. Horizontal air discharge is four-way. The supply air to room air temperature difference may range from –10 to +10 K.

To give rooms an aesthetic, uniform look, Type DLQ diffusers may also be used for extract air.

Nominal sizes250, 300, 400, 500, 600, 625 mm
Minimum volume flow rate20 – 250 l/s or 72 – 900 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)575 – 700 l/s or 2070 – 2520 m³/h
Supply air to room air temperature difference–10 to +10 K


Quick sizing – sound power level and total differential pressure

Nominal sizeVDamper blade position
Nominal sizeV45°90°
Nominal sizeVΔptLWAΔptLWAΔptLWA
Nominal sizel/sm³/hPadB(A)PadB(A)PadB(A)
250 20 72 5<155<1510<15
250 35 126 142216223125
250 60 216 413846389241
250 90 324 92511045120853
300 35 126 699112019
300 70 252 263037328139
300 100 360 5341754316549
300 135 486 96511375430159
400 75 270 91315213330
400 130 468 283146399845
400 185 666 5642935019857
400 235 846 90501506131967
500 135 486 121615194835
500 210 756 2832363511649
500 285 1026 5242664521358
500 360 1296 83501055334065
600 220 792 121819264935
600 330 1188 2632443911147
600 440 1584 4642784919757
600 545 1962 71501195830366
625 250 900 142126336439
625 330 1188 2431464211147
625 410 1476 3739704917155
625 575 2070 74501386133674


Quick sizing – sound power level and total differential pressure

Nominal sizeVDamper blade position
Nominal sizeV45°90°
Nominal sizeVΔptLWAΔptLWAΔptLWA
Nominal sizel/sm³/hPadB(A)PadB(A)PadB(A)
600 625 220 792 3129644112948
600 625 280 1008 50371044920957
600 625 340 1224 73441535630865
600 625 405 1458 104502176443773


Ceiling diffusers with square diffuser face. Supply air and extract air variants for comfort zones. Diffuser face with fixed air control blades for horizontal four-way air discharge. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the galvanised sheet steel diffuser face with fixed air control blades, a diffuser front frame with perimeter seal and connecting frame, opposed action blades, butterfly damper or a plenum box.

Diffuser face suitable for central screw fixing.

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

Special characteristics

  • Horizontal four-way supply air discharge
  • Grille face made of galvanised sheet steel
  • For all types of ceiling systems
  • Horizontal or vertical duct connection

Materials and surfaces

  • Diffuser face, connecting frame and butterfly damper made of sheet steel
  • AK: Plenum box and cross bar made of galvanised sheet steel
  • X: Plenum box made of plastic and galvanised sheet steel
  • Lip seal made of rubber
  • Attachments are dip coated RAL 9005, jet black
  • Diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 250, 300, 400, 500, 600, 625 mm
  • Minimum volume flow rate: 20 – 250 l/s or 72 – 900 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 575 – 700 l/s or 2070 – 2520 m³/h
  • Supply air to room air temperature difference: –10 to +10 K

00100710_0

 Type
DLQ       Ceiling diffuser

 Connection
A       Diffuser face only
AR       Vertical, with connecting frame
AG       Vertical, with blades (not for nominal size 250)
C       Vertical, with butterfly damper
ZV       Vertical, supply air, with plenum box
AV       Vertical, extract air, with plenum box
ZH       Horizontal, supply air, with plenum box
AH       Horizontal, extract air, with plenum box

 Damper blade for volume flow rate balancing
       No entry: without damper blade
       Only for connection ZH, AH
M       With damper blade
MN       With cords and pressure tap

 

 Accessories
       No entry: without accessories
L       With lip seal (only with plenum box)

 Nominal size [mm]
250
300
400
500
600
625

 Exposed surface
       No entry: powder-coated RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

 

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Contact

Thank you for your message!

Visual contact Visual contact

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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