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AFB - 1

AFB Low Velocity Supply Unit Product Models & Accessories • Horizontal low velocity air supply at floor level • Flow pattern at an angle of 180 degrees enables • Stainless steel (AISI 316) design large airflow rates with low residual velocities in the • Model with thick front panel (1.5 mm) occupied zone • Duct cover • Detachable front panel and metallic internal structure • Installation base allow cleaning of the unit and ductwork • Circular duct connection with integral gasket at the top/bottom MATERIAL AND FINISHING PART Front panel Perforated galvanised steel Galvanised steel Flow equalisation element Perforated galvanised steel Cover strip Coupling sleeve with gasket Galvanised steel Installation base Galvanised steel Gasket of rubber compound Duct cover Galvanised steel Polyester-epoxy-painted White RAL 9010 / 30% gloss AFB - Low Velocity Supply Unit 28 Special colours available

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AFB - 2

LpA values presented with room attenuation 4 dB (red 10m 2 sab). When using room attenuation 8 dB (red 25m 2 - sab): LpA - 4dB. LpA A-weighted sound pressure level, reduced by total equivalent absorption surface of 10m 2, dB(A) red 10m 2 - sab DPst Static pressure drop, Pa DPtot Total pressure drop, Pa L 0,2 (-3 °C 1.1 m) Throw length, m when residual velocity of supply air jet 0,2 m/s, DT -3 °C in 1,1 m height L 0,2 (- 3 °C) Throw length, m when residual velocity of supply air jet 0,2 m/s, DT -3 °C Room temperature (Tr) = 24 °C Supply air temperature (Ta) = 21 °C AFB - Low Velocity Supply...

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AFB - 3

Product Options & Accessories Product options Air is supplied into the space through the front panel • Duct cover (DC) made of perforated steel of the unit, normally at a slightly lower temperature than the room air temperature. • Construction made of stainless steel AISI 316 The supply air flows down to floor level and gradually • Thicker front panel (1.5 mm) pervades at low velocity level the occupied space • Smaller than standard duct connection of the unit and finally rises up due to the convection of warm • Cover strip in white, grey, black or blue colours surfaces. The low velocity...

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AFB - 4

CODE DESCRIPTION 3 Flow equalization element Open the front panel (2) by first removing the cover strips (1) and unscrewing the screws. Pull out the front panel. If required, the flow equalization element (3) can be detached by unscrewing the fixing screws. Pull out the inner structure. Wipe the parts with a damp cloth, instead of immersing in water. Reassemble after cleaning in reverse order. Pressure drop and sound data, supply Selection example : AFB - Low Velocity Supply Unit

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AFB - 5

SOUND LEVEL DATA, SUPPLY LpA values presented with room attenuation 4 dB (red 10m2 - sab). When using room attenuation 8 dB (red 25m2 - sab): LpA - 4dB. NR/NC noise criteria AFB - Low Velocity Supply Unit

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AFB - 6

Installation Perform the installation in the numerical order. Duct installation 1. Fix mounting brackets (4 places) to low velocity unit. 42 2. Remove plastic cover strips (E) from unit. 3. Locate unit against wall and secure through mounting brackets. 4. Fix duct cover support brackets (A) to wall between unit and ceiling. 5. Position AS base against lower flange of the unit. 6. After installation of ductwork, locate DC duct cover as follows : Locate DC duct cover section (F) on top flange (G) of AF unit and firmly push into support brackets fixed to wall (B). 7 Secure DC duct cover with...

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AFB - 7

Suggested specifications Option The low velocity unit shall be made of polyester-epoxypainted hot galvanized steel, with white (RAL 9010) The unit shall be equipped with a duct cover, installation base and/or coloured cover strip where The unit shall have a robust maintenance-free, non- clogging structure. The front panel of the unit shall be made of galvanised The unit shall comprise a detachable, perforated front steel with a thickness of 1.5 mm. panel and a hygienic internal fixed flow equalization element. The unit shall have a circular duct connection at the top or bottom depending the...

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