Type DLQL

For horizontal one-way to four-way air discharge, for comfort zones, with fixed baffle element

Square ceiling diffusers

  • Nominal sizes 250, 300, 400, 500, 600
  • Volume flow rate range 6 – 285 l/s or 22 – 1026 m³/h
  • Square diffuser face
  • Diffuser face made of galvanised sheet steel, powder-coated
  • For supply and extract air
  • For variable and constant volume flows
  • For all types of ceiling systems
  • Perforated diffuser face with special baffle element for horizontal air discharge and high induction levels


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal or vertical duct connection
  • Blanking plates for adjusting the discharge direction
  • Plenum box with damper blade

DLQL-P 00132971_0
  • Application
  • Description

Application

  • Type DLQL ceiling diffusers are used as supply air or extract air diffusers for comfort zones
  • Perfect integration with suspended perforated sheet metal ceilings
  • Horizontal one-way to 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 one-way to four-way supply air discharge
  • Perforated diffuser face made of galvanised sheet steel
  • For all types of ceiling systems
  • Horizontal or vertical duct connection

Nominal sizes

Ceiling tile

  • 248, 298, 398, 498, 598, 623 (intermediate sizes 249 to 622, in increments of 1 mm)


Air terminal device

  • 250, 300, 400, 500, 600

Variants

  • DLQL-P: Grid ceilings and continuous plasterboard ceilings
  • DLQL-T: T-bar ceilings
  • DLQL-*-Z: Supply air
  • DLQL-*-A: Extract air


Connection

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

Parts and characteristics

  • Perforated square diffuser face with special baffle element
  • Simple installation of the diffuser face due to central fixing screw with decorative cap (variant -P)

Attachments

  • M: Damper blade for volume flow rate balancing with horizontal connection

Accessories

  • Lip seal

Useful additions

  • Blanking plates

Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Spigot with groove for lip seal (if accessory lip seal has been ordered)

Materials and surfaces

  • Perforated diffuser face made of galvanised sheet steel
  • Casing, damper blade and plenum box made of galvanised sheet steel
  • Baffle element made of acoustic fleece
  • Lip seal made of rubber
  • Casing powder-coated RAL 9005, jet black
  • Diffuser face dip 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 DLQL for supply air with one blanking plate 00105773_0..

① Diffuser face
② Central fixing screw
③ Baffle element (only for supply air)
④ Casing
⑤ Plenum box
⑥ Cross bar
⑦ Suspension hole
⑧ Spigot



Optional
⑨ Lip seal
⑩ Damper blade for volume flow rate balancing
⑪ Blanking plate

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 DLQL ceiling diffusers are fitted with a special baffle element that creates a horizontal air discharge with high induction levels. Horizontal air discharge is one-way to 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 DLQL diffusers may also be used for extract air.

Nominal sizes – ceiling tile248, 298, 398, 498, 593, 598, 618, 623 mm
Nominal sizes – diffuser250, 300, 400, 500, 600 mm
Minimum volume flow rate6 – 145 l/s or 22 – 522 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)275 – 285 l/s or 990 – 1026 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 6 22 3<153<156<15
250 15 54 202222224022
250 20 72 353139317031
250 30 108 7949874915849
300 10 36 5<156<1511<15
300 20 72 223024304331
300 30 108 494254429843
300 40 144 8752955217353
400 15 54 5<155<159<15
400 30 108 192821293830
400 45 162 434247438544
400 55 198 6449705012751
500 25 90 7<158<1514<15
500 40 144 172819293529
500 55 198 334236436643
500 70 252 5450595110751
600 35 126 5<156<1511<15
600 60 216 162817283228
600 85 306 324135416341
600 110 396 5350585010650


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 15 54 8179171617
250 25 90 223024304430
250 35 126 433948398739
250 50 180 8951975117751
300 20 72 91810181819
300 30 108 202922294030
300 40 144 363839387239
300 55 198 6850755013651
400 35 126 101811192020
400 50 180 203023314132
400 70 252 404244438044
400 85 306 5949655011851
500 50 180 102011212021
500 70 252 203222333933
500 95 342 364340447244
500 115 414 5350585110651
600 75 270 91610161916
600 105 378 193120313731
600 140 504 334236426642
600 175 630 5250575010350


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 92010201820
250 35 126 273430345434
250 50 180 5545614511045
250 60 216 8052875215952
300 30 108 132314232624
300 40 144 233225324633
300 50 180 364040407241
300 65 234 6149674912250
400 50 180 122113222423
400 70 252 233226334734
400 90 324 394243437744
400 110 396 5850645111552
500 75 270 132214232623
500 100 360 233525364636
500 125 450 364339447244
500 150 540 5250575110351
600 110 396 121913192319
600 150 540 223324334333
600 190 684 354238426942
600 235 846 5350585010650


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 25 90 102311221722
250 35 126 193021303430
250 50 180 394043416940
250 65 234 6649724911649
300 35 126 142316242825
300 45 162 233126324632
300 60 216 414146418141
300 75 270 6450724912749
400 65 234 152319253526
400 75 270 202825304731
400 95 342 323740387539
400 135 486 6450805115151
500 100 360 182720273728
500 130 468 303833376238
500 160 576 464650459446
500 180 648 5850635011850
600 145 522 152517253025
600 185 666 243428344934
600 230 828 384344437543
600 275 990 5450635010749


Ceiling diffusers with perforated square diffuser face. Supply air and extract air variants for comfort zones. Diffuser face with baffle element for horizontal one-way to four-way supply air discharge. For flush installation into all kinds of suspended grid or continuous plasterboard ceilings.

Ready-to-install component which consists of the diffuser face with baffle element (only for supply air), and either a casing with top entry spigot or a plenum box with side entry spigot.

Perforated diffuser face suitable for central screw fixing (variant -P).

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

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

Materials and surfaces

  • Perforated diffuser face made of galvanised sheet steel
  • Casing, damper blade and plenum box made of galvanised sheet steel
  • Baffle element made of acoustic fleece
  • Lip seal made of rubber
  • Casing powder-coated RAL 9005, jet black
  • Diffuser face dip coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes – ceiling tile: 248, 298, 398, 498, 593, 598, 618, 623 mm
  • Nominal sizes – diffuser: 250, 300, 400, 500, 600 mm
  • Minimum volume flow rate: 6 – 145 l/s or 22 – 522 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 275 – 285 l/s or 990 – 1026 m³/h
  • Supply air to room air temperature difference: –10 to +10 K

00135393_0

 Type
DLQL       Ceiling diffuser

 Ceiling system
P       Grid or plasterboard ceiling
T       T-bar ceiling

 System
Z       Supply air
A       Extract air

 Connection
H       Horizontal
V       Vertical

 Damper blade for volume flow rate balancing
No entry: none
M       With (only for connection type H)

 Accessories
No entry: none
L       With lip seal

 

 Nominal size [mm]
250
300
400
500
600

  Size of diffuser face plate [mm]
       DLQL-P
       No entry: size of diffuser face plate = nominal size – 2 mm
598       For grid size 600
623       For grid size 625
...       Other dimensions, 623 mm max.
       DLQL-T
593       For T-bar ceilings, grid size 600
618       For T-bar ceilings, grid size 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

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