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MADEL
LOF&LAIF

LOF&LAIF

Product catalog summary

Overview
The LOF & LAIF series of fixed linear slot diffusers by MADEL are designed to blend aesthetics with technical performance. These diffusers can be installed in false ceilings or suspended from the ceiling, allowing for continuous lines with both active and inactive areas. They are suitable for both air supply and return, with options for 1-way or 2-way air supply depending on the model. The diffusers maintain a stable air stream with a flow variation of up to 60% and can be used at heights from 2.6 to 4 meters with a temperature differential of up to 12º C.

Classification
The diffusers are classified into several types based on their configuration:

LOF-AR: 1-way air supply, suitable for lengths ≤ 2 m.
LAIF-AR: 2-way air supply, suitable for lengths ≤ 2 m.
...-ARI: End border on the left side for lines >2m.
...-ARD: End border on the right side for lines >2m.
...-INT: No end borders for lines > 4 m.

Material
The diffusers are constructed from aluminum, ensuring durability and lightweight properties.

Accessories
Accessories include plenum boxes with lateral circular connections, available with or without flow dampers. The plenum boxes are made from galvanized steel and can be thermo-acoustically insulated with foam that meets specific fire reaction standards.

Fixing Systems
Two main fixing systems are available:

(D) Support brackets for hanging the diffuser from the ceiling or attaching it to the plenum box.
(PM) Crossbars for installation without a plenum box in false ceilings or for attaching to the plenum box.

Finishes
The diffusers are available in various finishes, including matt silver anodized (AA), white similar to RAL 9016 (M9016), white RAL 9010 (R9010), and other RAL colors.

Performance Specifications
The diffusers are designed for optimal performance with ceiling effect, maintaining free velocity, pressure loss, and sound power levels within recommended limits. Correction factors for vertical diffusion and throw are provided to ensure accurate performance based on temperature ratios and induction ratios.

Catalog excerpts

LOF & LAIF fixed linear slot diffusers with minimized frame The LOF&LAIF series fixed linear slot diffusers are designed to combine the aesthetics with the technical performance. They can be mounted in false ceilings or suspended from the ceiling. They allow the formation of diffuser continuous lines, with active and inactive areas, without breaking the uniformity of the whole. They are suitable both for supply and return. Fixed slots for air supply with ceiling effect in 1-way or 2-way depending on the model. The LOF&LAIF diffusers admit a flow variation of 60% keeping the air stream stable. These diffusers can be used from 2,6 up to 4 metres high and at a temperature differential up to 12º C.

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LOF-AR Diffuser for air supply in 1-way, end borders included. Suitable for lengths ≤ 2 m. LAIF-AR Diffuser for air supply in 2-way, end borders included. Suitable for lengths ≤ 2 m. …-ARI Diffuser with an end border on the left side, required to form lines >2m. …-ARD Diffuser with an end border on the right side, required to form lines >2m. …-INT Diffuser without end borders, required to form lines > 4 m. Diffuser constructed from aluminium. L 500 1000 1200 1500 2000

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MADEL LOF&LAIF-AR LOF&LAIF AR (D) + PLF 8 ACCESSORIES PLF Plenum box with lateral circular connection. It includes supports to hang from the ceiling. Made in galvanised steel. …-R Plenum box with a flow damper in the spigot. …/AIS/ Plenum box thermo acoustically insulated by a foam with a coefficient of thermal conductivity of 0,04 w/mk. This foam complies with the fire reaction specifications: UNE 23-727 M2 NFP 92-501 M2 DIN 4102 M2 A90/LOF&LAIF Inactive diffuser without end borders, making a 90º angle.

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(D) Support brackets to hang the diffuser LOF or LAIF from the ceiling or the diffuser riveted to the plenum box LOF or LAIF+PLF. (PM) Set of crossbars for installation of the diffuser without plenum box in false ceiling or for p g installation of the diffuser to the plenum box FINISHES AA Matt silver anodised. M9016 Painted in white similar to RAL 9016 9016. (PM) RAL... Painted in other RAL colours. SPECIFICATION TEXT Supply and mounting of fixed linear slot diffuser for air supply with ceiling effect in 1-way series LOFAR (D)+PLF-R AA 2x1000 constructed from aluminium and anodised in matt silver...

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MADEL LOF&LAIF FREE VELOCITY, PRESSURE LOSS AND SOUND POWER LEVEL, THROW WITH CEILING EFFECT. RECOMMENDED VELOCITY. FREE FACE AREA (m2).

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Kh = Correction factor for the vertical diffusion. Kl = Correction factor for the throw. TEMPERATURE RATIO. INDUCTION RATIO.

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