For air supply and exhaust in ventilation and air conditioning systems
Material
Steel
Colour
Standard colour white, RAL 9016
Other colours available upon request
Composition
Fixed blades
Mounting
Fixing with central screw into the crossbar of the plenum box
Accessories
Plenum box, type RER-LB
Insulated plenum box, type RER-LB ISO
Regulating valve for plenum box, type CRC
Mounting crossbar for direct duct mounting, type FGN
Mounting crossbar for direct ceiling mounting, type FHN
Text for tender
The square air supply diffusers are of the swirl type with fixed blades. They are made of steel with white powder coating RAL 9016 and supplied with a volume control damper in the plenum box.
Cairox type VWR-N+RER-L
The square air supply diffusers are of the swirl type with fixed blades. They are made of steel with white powder coating RAL 9016 and supplied with a volume control damper in the plenum box.
Vz = Maximum velocity at the occupied zone according to distance between the diffusers and installation height in m/s
Vk = Average effective velocity through the diffuser in m/s
X0.25 = Throw length in m at an end velocity Vt of 0,25m/s
Ps = Static pressure loss given in Pa
Lw(A) = Acoustic power in dB(A)
The throw X0.25 is given at an end velocity of 0.25m/s for a smooth ceiling without any obstacles.
The values are given for isothermal supply air. Throw distances for cooling conditions at -11K can be calculated by dividing the X0.25 values with factor 1.1. For heating purposes at Dt of +11K a multiplier of 1.1 should be applied to the given X0.25 value.
In order to achieve a high comfort level, selections can be made according to the maximal velocity at the occupied zone Vz. These values are given at distances between diffusers B and installation heights H. Velocities Vz lower than, or equal to 0,25m/s at the occupied zone are advised.
The pressure losses Ps are given for diffusers without damper of with fully opened damper.
The acoustic power values Lw(A) are given for diffusers without damper of with fully opened damper without room attenuation. Acoustic powers below 20dB(A) are mentioned as "<20" in the tables.
For all special requirements, please contact our engineering office.