TYPE ADLQL

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

Square ceiling diffusers:

  • Nominal sizes;
    - Diffuser face: 600
    - Active sizes: 250, 300, 400, 500, 600
  • Volume flow rate range 20 – 265 l/s or 72 – 954 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
  • Side entry plenum box with optional damper blade

APPLICATION

Application

  • Type ADLQL 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

  • Diffuser face: 600
  • Active size: 250, 300, 400, 500, 600

DESCRIPTION

Variants

  • ADLQL: Perforated face diffuser


Installation type:

  • Q: Face mounted
  • QL: Lay-in flat 'T' bar
  • QS15: Tegular 'T' bar 15 x 8
  • QS26: Tegular 'T' bar 26 x 8
  • QM15: Tegular 'T' bar 15 x 16
  • QM26: Tegular 'T' bar 26 x 16
  • QB: Push-in spring 'T' (Burgess)


Discharge direction

  • ADLQL - * - 4: 4 way discharge
  • ADLQL - * - 3: 3 way discharge
  • ADLQL - * - 2C: 2 way corner discharge
  • ADLQL - * - 2: 2 way discharge
  • ADLQL - * - 1: 1 way discharge


Connection

  • ADLQL - * - ZH: Horizontal supply (1)
  • ADLQL - * - ZV: Vertical supply (1)
  • ADLQL - * - AH: Horizontal extract
  • ADLQL - * - AV: Vertical extract
  • RA: Return air baffle (1)

(1) In combination with AKV-ADLQL

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


Accessories

  • Plenum box with horizontal connection
  • Return air baffle


Useful additions

  • Blanking plates


Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Perforated plate has a free area of approx. 46 %
  • Hole diameter is 5 mm, the rows of holes are offset from each other


Materials and surfaces

  • Diffuser face, and plenum box made of galvanised sheet steel
  • Plenum box lining is Class 'O' acoustic foam
  • Baffle element made of perforated steel
  • Casing powder-coated RAL 9005, jet black 
  • P3: Perforated face powder-coated RAL 9010:20%
  • P6: Perforated face powder-coated, RAL CLASSIC colour, 25% gloss


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, Technical data, Quick sizing, Specification text, Order code

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

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 ADLQL ceiling diffusers are fitted with a special baffle element that creates a horizontal air discharge and 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 +10K. To give rooms an aesthetic, uniform look, Type ADLQL diffusers may also be used for extract air.

Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures. 

The minimum volume flow rates apply to a supply air to room air temperature difference of –6 K. The maximum volume flow rates apply to a sound power level of approx. 50 dB (A) (damper blade position 0°). Exact values for all parameters can be determined with our Easy Product Finder design programme.

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

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. The perforated plate has a free area of approx. 46 %. The hole diameter is 5 mm and the rows of holes are offset from each other. 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

  • Diffuser face and plenum box made of galvanised sheet steel
  • Plenum box lining is Class 'O' acoustic foam
  • Baffle element made of perforated steel
  • Casing powder-coated RAL 9005, jet black
  • P3: Perforated face powder-coated RAL 9010:20%
  • P6: Perforated face powder-coated,RAL CLASSIC colour, 25% gloss


Technical data

  • Nominal sizes – Diffuser face: 600 mm
  • Nominal sizes – Active diffuser: 250, 300, 400, 500, 600 mm
  • Minimum volume flow rate: 20 – 115 l/s or 72 – 414 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 58 – 265 l/s or 208 – 954 m³/h
  • Supply air to room air temperature difference: -10 to +10K


Sizing data

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]


Variants, Dimensions and weight, Product details

  • VARIANTS
  • DIMENSIONS AND WEIGHT
  • PRODUCT DETAILS

Variants

ADLQL-... + AKV-ADLQL-...

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

  • Ceiling diffuser with square diffuser face
  • With plenum box for horizontal duct connection


Nominal sizes

  • Diffuser face: 600 mm
  • Active size: 250, 300, 400, 500, 600 mm


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


Construction features

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


ADLQL-...-V

Variant

  • Ceiling diffuser with square diffuser face
  • With plenum box for vertical duct connection


Nominal sizes

  • Diffuser face: 600 mm
  • Active size: 250, 300, 400, 500, 600 mm


Parts and characteristics

  • Square diffuser face 
  • Plenum box for vertical duct connection


Construction features

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

Installation examples, Installation details, Basic information and nomenclature

  • INSTALLATION EXAMPLES
  • INSTALLATION DETAILS
  • BASIC INFORMATION AND NOMENCLATURE

Installation and commissioning

  • Preferably for rooms with a clear height up to 4.0 m
  • Installation in plasterboard, grid and T-bar ceilings
  • Horizontal or vertical duct connection
  • If necessary, carry out volume flow rate balancing with the damper element


These are only schematic diagrams to illustrate installation details

Flush ceiling installation with square plenum box

  • Horizontal duct connection
  • Four suspension holes
  • Suspension with cords, wires, or hangers, to be provided by others


Flush ceiling installation with vertical connection

  • Vertical duct connection
  • Three suspension lugs
  • Suspension with cords, wires or hangers, to be provided by others



Principal dimensions

ØD [mm]
Outer diameter of the spigot

ØD₁ [mm]
Outer diameter of a circular diffuser face

ØD₂ [mm]
Diameter of a circular diffuser face style

ØD₃ [mm]
Diameter of a circular plenum box

□Q₁ [mm]
Outer diameter of a square diffuser face

□Q₂ [mm]
Dimensions of a square diffuser face style

□Q₃ [mm]
Dimensions of a square plenum box

H₁ [mm]
Distance (height) from the lower edge of the suspended ceiling to the lower edge of the diffuser face

H₂ [mm]
Height of a ceiling diffuser, from the lower edge of the suspended ceiling to the upper edge of the spigot

H₃ [mm]
Height of a ceiling diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box or of the spigot

A [mm]
Position of the spigot, defined by the distance of the spigot centre line to the lower edge of the suspended ceiling

C [mm]
Length of the spigot

m [kg]
Weight

Nomenclature

LWA [dB(A)]
A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]
Volume flow rate

Δtz [K]
Supply air to room air temperature difference, i.e. supply air temperature minus room temperature

Δpt [Pa]
Total differential pressure

Aeff [m²]
Effective air discharge area

All sound power levels are based on 1 pW.

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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.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051