MODEL KDE
Aluminum Square Diffusers
Application • Versatile Supply Air Diffuser for constant or variable air volume cooling , heating or ventilating • Directional diffusers are offered in all standard square dimensions with a variety of cores to provide any required air pattern. • Directed air diffusion for space coverage with great flexibility in space layout and geometry, and diffuser location • Surface mounted
Product Features • Core is removable to facilitate access to duct / damper • KDE Series feature a square neck • Concealed core attachment – NO screws • Powder coated – RAL 9010 finish
Construction • Available in wide variety of standard neck sizes ranging from 150mm x 150mm up to 600mm x 600 mm, available in 75 mm increments. • The core is held in place & fixed to the frame by two loaded spiral galvanized steel springs. • Foam gasket is sealed around the back of the frame as option to avoid air leakage Model KDE – Surface Mounted
Dimensional Data Nominal Neck Size
Actual Neck Size
Outer Frame Size
mm
inch
mm
mm
False Ceiling Opening Size mm
150 x 150
6”x 6”
135 x 135
297x 297
233 x 233
225 x 225
9”x 9”
210 x 210
372 x 372
308 x 308
300 x 300
12”x 12”
285 x 285
447 x 447
383 x 383
375 x 375
15”x 15”
360 x 360
522 x 522
458 x 458
450 x 450
18”x 18”
435 x 435
597 x 597
533 x 533
525 x 525
21”x 21”
510 x 510
672 x 672
608 x 608
600 x 600
24”x 24”
585 x 585
747 x 747
683 x 683
PRODUCT SELECTION CHECK LIST • Select Unit Size based on desired performance characteristics • Select blade orientation • Select finish
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MODEL KDE
Aluminum Square Diffusers Performance Data
Notes : Standard ANSI / ASHRAE standard 70
Pressure Pt represents Total Pressure, Pascal (Pa), measured in the supply duct
Sound Levels NC is noise criteria curve that will not be exceeded at the operating point for thesupply air volume shown. This is determined by assuming a 10dB(ref: 1012 watts) room attenuation that is subtracted from the power levels ineach of the 2nd thru 7th octave bands Return Use: Add + 2 to the NC shown in the tables
Neck Velocity Meters per second (m/s), measured in the supply duct
Throw The numbers shown are throw distances, in meters, measured along the jettrajectory axis relating to terminal velocities of 0.75, 0.5 &0.25 m/s with the jetattached to the ceiling surface.
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