SUPPLY AIR LINEAR DIFFUSER

Model ALD series Linear diffusers are constructed from highly corrosion resistant extruded aluminium. The Linear Diffuser is designed to withstand rough handling without distortion. It is enamel coated and oven-baked for scratch resistant.

ALD Linear Diffuser is a very popular choice for many cooling, heating and ventilating application, and it is designed to handle large volumes of air with good throw patterns, acceptable pressure drops and sound levels. With a superior horizontal air pattern, it produces the maximum entrainment of room air, generating the air motion required to provide the optimum comfort conditions throughout the occupied zone.

  • AIR GRILLES linear diffusers are specially designed to suit modern architectural and interior decoration requirements
  • Stylish, scratch resistant and non-yellowing.
  • Pattern vanes permits 180 degrees adjustable air pattern, complete flow rate control, including blank-off
  • Flow patterns can be easily adjusted even after diffusers are installed.
  • Available with I through 8 slots (one piece).
  • Standard slot width or 20mrn and 25mm.
  • Suitable or mounting on virtually all types of ceiling.
  • For continuous runs, made up of individual lengths, the extruded shapes are specially designed to include alignment pins and slugs
  • All Diffusers are enamel coated and oven baked for scratch resistant.
  • Units of grilles have been tested at an independent N.A.T.A. accredited test laboratory in Australia.

SELECTION OF DIFFUSERS
AIR QUANTITY AND NOISE REQUIREMENTS
The total volume of air (ℓ/s) transmitted into a given area to be conditioned is a function of the overall system design (i.e. Total ℓ/s = Number of outlets x ℓ/s per outlet.
The permissible Noise Level of the conditioned area is directly related to the intended use of conditioned area (Please refer to the table on Recommended Sound Levels in page 10).

AIR DISTRIBUTION PATTERN
Given the shape or the space to be conditioned. the pattern requirement is determined by the number or outlets in it and the incidence or any exposed beams or light fittings below the ceiling line that may affect the dispersement of air.

THROW REQUIREMENT
The required throw is usually the distance from the nearest enclosing wall or partition or to the point of intersection with the airstream of an adjacent outlet. for high ceiling areas, the throw requirement may be specified as the horizontal distance described above plus the vertical distance form the outlet to the occupied zone. This vertical distance is commonly measured to extend to the 1500mm level in the room. Generally, the specified throw should not exceed 1.5 times the diffuser mounting height.

GENERAL SELECTION
Model ALD Linear Diffusers are available in lengths of up to 3000mm. Any diffusers of longer lengths are joined together using alignment pins/plates. Plenum boxes are also available in lengths of up to 2000mm.

MODEL ALD DIMENSIONS

ALL DIMENSIONS IN MILLIMETRES (mm)

PATTERN ADJUSTMENT
Contoured vanes permit full 180 degrees adjustable air pattern, complete flow rate control, including blank-off.

ACCOUSTIC AND AIRFLOW PERFORMANCE DATA for 1200mm length x 20mm slot Width SUPPLY AIR LINEAR DIFFUSER

Model ALD

SP – Static Pressure (Pa)
NR – Noise rating number based upon room absorption or 10dB
T – Throw In meters to a Terminal Velocity of 0.25 m/sec (as per ADC 1062 – R3)
Qs – Primary Air Flow Rate (ℓ/s)
RESULT Of PERFORMANCE IS TESTED UNDER NATA (AUSTRALIA)

PLENUM BOX FOR ALD SERIES
Plenum box shall be constructed of 24 gauge galvanised sheet, internally insulated with 12mm thick fiberglass of 48kg/m3 density.

CONCEALED (PLASTER) CEILING TYPE

ALL DIMENSIONS IN MILLIMETRES (mm)

PLENUM BOX FOR ALD SERIES
Plenum box shall be constructed of 24 gauge galvanised sheet, internally insulated with 12mm thick fibreglass of 48kg/m3 density.

T-BAR CEILING TYPE

ALL DIMENSIONS IN MILLIMETRES (mm)

ALD DIFFUSERS END DETAILS

  • TYPE “M” is for use where end of Linear Diffuser terminates away from wall.
  • TYPE “O” is for use where Linear Diffuser is to be butted with another Linear Diffuser.
  • TYPE “E” is for use where Linear Diffuser terminates at a wall or partition.
  • TYPE “MC” Mitred corners.

ACCESSORIES
BLANK OFF
Used to cover inactive sections of Linear Diffuser.Shipped loose for field cutting and installation.

RECOMMENDED SOUND LEVELS

WARRANTY
AIR GRILLES MANUFACTURING PTE LTD (the “company”) warrants that all goods in this catalogue that have been manufactured by the company will be defects free in quality or material under normal use and service for a period of one year after goods are sold. The company have the right to make improved changes to the products at any time. The company is obligated under this warranty, only to replace any product which is defective in quality or material under normal use and service within such period. Component parts or accessories which are covered by the warranty of the manufacturer will not be covered under this warranty. Any improper use of the product, after defective or worn parts have been discovered, or any modification or repair by others which the company claims that it will materially and adversely affects the products, neglect, substitution of parts not approved by the company will void this warranty.
No person is authorised to assume any liability with respect to any goods sold, for the company. No representatives or employee is authorised to change this warranty or give any other warranty unless it is authorised by an officer of the company at its home office in writing. In any event of payment of incidental or consequential damages, including without limitation, delay cost or damages for property or injury to persons, the company shall have no liabilities whatsoever.
Claims under this warranty, if not submitted, in writing and received by the company within thirty (30) days of the dated to which each claim relates, is discovered or should have discovered, will be deemed waived.