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DLQ/ADLQ
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Catalog excerpts

DLQ/ADLQ - 1

Ceiling Diffusers Type DLQ · ADLQ recommended for room heights from 2.60 . . . 4.00 m TROX GmbH Heinrich-Trox-Platz D-47504 Neukirchen-Vluyn

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DLQ/ADLQ - 2

Contents · Description Description Construction · Dimensions Installation · Mounting Details Materials Nomenclature Spectral Data Acoustic Data Aerodynamic Data Order Details Description Square ceiling diffusers type DLQ (steel) and ADLQ (aluminium) are ideal for flush mounting in ceilings. They are suitable for use in rooms with heights up to 4.00 m. The recommended supply air temperature differential is Ȁ10K. Ceiling diffusers can be used both for supply and extract applications. With a fixed blade arrangement the ceiling diffusers are mainly suitable for horizontal discharge. Specially...

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DLQ/ADLQ - 3

Construction · Dimensions Construction The face section of the type DLQ and ADLQ diffuser consists of a peripheral border, fixed air control blades and a centre cone. The diffuser face section is fitted or removed by means of a central fixing screw. The screw head is then covered with a decorative cap. Types DLQ and ADLQ are available as a diffuser face complete with plenum box and side entry spigot, or with the following ancillaries: The use of versatile ancillaries such as standard or duct mounting subframes for installation in vertical ducts, results in great flexibility in installation...

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DLQ/ADLQ - 4

Installation · Assembly · Materials Installation · Assembly Type DLQ or ADLQ ceiling diffusers can be adapted for use in almost all situations using the accessories available. All sizes are suitable for mounting flush with the ceiling. The diffuser face and rear-mounted ancillaries are in deep drawn or formed sheet steel. The plenum box is suspended on wire or straps using the holes provided. The seal provided must be fixed to the edging of the plenum box on site by others. The diffuser face is fixed to the plenum box by the centre screw and the cross bridge provided. If a vertical rigid...

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DLQ/ADLQ - 5

Nomenclature · Spectral Data H1 A eff vL v H1 Volume flow per diffuser Volume flow per diffuser Spacing between two diffusers Horizontal plus vertical distance (X + H1) discharge to the wall in m: Distance between centre of diffuser and the wall Distance between ceiling and occupied zone Effective outlet area Time average air velocity at the wall Time average air velocity between two diffusers at distance H 1 from the ceiling Temperature difference between supply and room air Difference between core and room temperature at distance L = A/2 + H 1 or L = X + H 1 Total pressure drop A-weighted...

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DLQ/ADLQ - 6

Acoustic Data Example Data given: DLQ-A/500 Volume flow per diffuser Octave band centry frequency in Hz Required: Octave sound power level of regenerated noise L W Diagram 3: L WA = 30 dB(A) ͬ p t = 11 Pa Sound power level and pressure drop Sound power level and pressure drop Type DLQ/ADLQ-AK (supply air) Correction to Diagram 1: Damper setting Size 250 Sound power level and pressure drop Type DLQ/ADLQ-AK (extract air) Damper angle Correction to Diagram 2: Damper setting Size Damper angle

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DLQ/ADLQ - 7

Acoustic Data Correction for DLQ/ADLQ-C, Diagram 4 100 % Correction for DLQ/ADLQ-AG, Diagram 5 Sound power level and pressure drop Type DLQ/ADLQ-A Sound power level and pressure drop Type DLQ/ADLQ-C Sound power level and pressure drop Type DLQ/ADLQ-AG

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DLQ/ADLQ - 8

Aerodynamic Data Example Data given: DLQ-AK/600 · Volume flow per diffuser V = 300 l/s Supply air temp. difference ͬ t Z = – 6K Spacing between two diffusers A = 6.50 m Distance between ceiling and occupied zone H 1 = 1.20 m Distance between centre of diffuser and the wall X = 4 m Throw towards wall, horizontal plus vertical distance L = 5.2 m Diagram 1: Sound power level and pressure drop L WA = 33 dB(A) (L WNC = 28 NC) ͬ p t = 24 Pa Air velocity between two diffusers at the wall Temperature Quotient Temperature quotient Effective outlet area Size Temperature quotient ⌬tL/⌬tZ

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DLQ/ADLQ - 9

Aerodynamic Data

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DLQ/ADLQ - 10

Order Details Specification Text Square ceiling diffuser for flush mounting, suitable for horizontal discharge, comprising diffuser face with mitred perimeter border, border has rear sealing strip, fixed air control blades, central fixing screw with decorative cap. Optional ancillaries: rear mounting ring, opposed blade damper adjustable from the front face, double flap damper adjustable from the front face; (alternatively with spigot damper and/or lip seal and test point for measuring pressure). The plenum box also has holes for suspending the assembly from the ceiling slab. Materials DLQ...

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