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Supply Square Diffuser

General Information:

Our Square Diffusers are designed to fit any space without sacrificing aesthetics while delivering outstanding performance.

Our broad range of diffusers provide air flow orientation in 1, 2, 3 or 4 ways, making them perfect for spaces where a particular zone has to be treated such as in geometrically irregular spaces or off-center parts of the space (conjunction of wall and ceiling, etc.).

Laboratory tests have demonstrated that these are ideal for variable volume systems, due to its blade design, with which an adherent jet is obtained (Coanda effect) with a highly satisfactory efficiency, especially recommended in cold air installations.

All square and diffuser types have standardised neck dimensions for duct mounting according to ISO standard.

Features:

  • Supply or return air applications
  • Complete assembly from extruded aluminium sections
  • Rigid, heavy gauge extruded frames with reinforced mitered and welded corners
  • Special patterns are available (Optional opposed blade damper)
  • Powder coated finish, standard color white
  • Size manufactured on request

General notes on the quick selection table:

  • These selection tables are based on full-scale laboratory tests
  • The jet is adherent, i.e. the diffuser is mounted aligned with the ceiling.
  • Room height is 3 ± 0.5m
  • Sound index NR is based on sound power, without room attenuation and without damper (mounting according to ISO).
  • Throws given correspond to a maximum velocity ( Vz ) of 0.25 m/s in the occupied zone.

Throw correction factor for room width / length ratio.

This factor, called Ca , is given by the ratio of room width and length and is applicable to diffusers. And the value of Ca equals 1, since they have been tested in a square room (A/L=1)

Throw correction factor for distance of diffuser to ceiling ( Ch )

For adherent jets, i.e. diffuser aligned with ceiling: Ch =1

For free jets, with the diffuser separated from the ceiling: Ch=1.4

The correct throw ( Xc ) is obtained by:

Xc = X * Ca * Ch