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  • ADJUSTABLE HELICAL SWIRL DIFFUSER HSC-AD

    Overview

    High capacity, high level, large airflow range, variable air pattern swirl diffuser for large volume spaces. Installation flush with ceiling or free-hanging. Adjustable blades affixed to a guide-ring assembly slide along a helical path over substantially radial fixed visible swirl vanes that are flush with the diffuser face, providing air direction adjustment (manual, thermal or electric) at a substantially constant pressure.

    Airflow rate 

    • 70 – 4000 L/s (250 – 14,400 m³/h) 

    Discharge height

    • 2.5 – 15 m

    Nominal neck sizes

    • DN250
    • DN355
    • DN500
    • DN710
    • DN1000 (in selected markets)

    Features

    • High capacity variable air pattern swirl diffuser for large volume spaces with high ceilings.
    • Substantially constant pressure manual, thermal or electric air pattern adjustment from horizontal to vertically downwards.
    • Air pattern adjustment via adjustable swirl vanes affixed to helically adjustable guide-ring - patents pending.
    • Helical twist of swirl vanes reduces vane pitch towards the periphery for increased airflow operating range.
    • Steep central swirl vane pitch increases airflow capacity and reduces pressure drop.
    • Four nominal neck sizes, each available with an optional reducer for reduced airflow.
    • Airflow rate range reduces by approximately 30% with each reduction in effective neck size.
    • Circular face shape standard for all sizes.
    • Optional square face for sizes DN250 - DN500, suitable for ceiling grids from 300 mm up to 600 mm, depending on diffuser neck size.
    • Installation freely suspended or flush with closed ceiling.
    • Substantially flush face with 20 radially off-set swirl vanes.
    • Similar aesthetic to HSC-FD.

     Download Technical Brochure >>

  • AUDITORIUM DISPLACEMENT DIFFUSER ADS-FD

    Overview

    Rectangular step displacement diffuser for location in vertical step face beneath seats in tiered auditoria and lecture theatres or in a staircase.

    Airflow rate

    • ≤60 L/(s · m); (216 m³/(h · m))

    Sound power level

    • ≤15 dB(A)

    Flanges

    • Available with or without face flanges

    Length

    • Variable

    Height

    • 100 - 300 mm

    Depth

    • 70 mm

    Features

    • For auditoria and halls with steps
    • Diffuser built into step front
    • With face flange - standard
    • Without face flange - optional. Ends may abut for continous look.
    • Optional concealed fasteners available
    • Slightly upward inclined, low velocity, low-turbulence displacement dispersion near floor
    • Low sound power level 

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  • AUDITORIUM FLOOR SWIRL DIFFUSER ASF-AD

    Overview

    Round floor swirl diffuser with rotatable inclined air pattern, for location beneath auditorium or lecture theatre seating.

    Airflow rate

    • 5 – 17 L/s (18 – 61 m³/h)

    Nominal neck size

    • DN200

    Discharge height

    • 0 m

    Displacement airflow: Thermal displacement auditorium airflow, with low level supply from beneath seats into the occupancy microclimate. Heat and contaminants rise to a high layer of stratification by natural convection. Enhanced levels of indoor air quality are attained in the breathing zone.

    Floor location: Air supply from beneath auditorium seats.
    VAV dependent throw: Suitable for VAV applications. Horizontal coverage dependent upon airflow rate.

    Adjustable direction: Rotatable inclined discharge pattern, to direct airflow away from legs.

    Manual adjustment: Rotation of air pattern direction is manual.

    Circular face shape: 200 mm nominal diameter round floor swirl face, plus mounting flange.

    Radial face pattern: Substantially radially aligned slots provide high induction swirl discharge.

    Concentric face pattern: Concentric slots provide inclined discharge.

    Plastic face: Polycarbonate, dyed grey or to colour of choice.

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  • CIRCULAR NOZZLE CNW-AD

    Overview

    Eyeball jet nozzle with adjustable discharge direction, for installation in ducts, walls, bulkheads or plenums.

    Airflow rate

    • 8 - 1000 L/s  (29 – 3600 m³/h)

    Throw

    • 3 - 60 m

    Nominal neck sizes

    • DN100 - jet discharge; manual adjustment
    • DN125 - jet discharge; manual adjustment
    • DN160 - jet discharge; manual adjustment
    • DN200 - jet discharge; manual adjustment
    • DN250 - jet or swirl discharge; manual adjustment
    • DN315 - jet or swirl discharge; manual, thermal or electric adjustment
    • DN400 - jet or swirl discharge; manual, thermal or electric adjustment
    • DN500 - jet or swirl discharge; manual, thermal or electric adjustment
    • DN630 - jet discharge; manual, thermal or electric adjustment

    Discharge height

    • 3 - 10 m

    Features

    • Round eyeball nozzle
    • Jet discharge for long throw - DN100 to DN500
    • Optional swirl discharge for reduced throw - DN250 to DN500
    • Manual adjustment - DN100 to DN630
    • Optional actuator adjustment (electric, or thermal with adjustable bias) - DN315 to DN630
    • 60° arc of discharge direction adjustment (ie ±30° from central axis)
    • Connection to pressure plenum, or to flexible or spiral duct via rear-side entry spigot
    • Powder coated aluminium

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  • FIXED HELICAL SWIRL DIFFUSER HSC-FD

    The world's highest performing fixed vane VAV swirl diffuser.

    High capacity, high induction, fixed horizontal discharge swirl diffuser with extended VAV operating range, suitable for low temperature supply air (≥ 5°C) allowing turndown to approx 25% @ ?â?ó?é?ê?é?åTsupply-room = -12 K. Enhanced ADPI ≥ 90% from approx. 1 L/s/m2 to approx. 15 L/s/m2.  May be mounted flush with ceiling or free-hanging.

    Airflow volume rate

    • 10 – 440 L/s (36 – 1584 m³/h)

    Supply temperature

    • ≥ 5°C

    Nominal sizes

    • DN250
    • DN355
    • DN500

    Discharge height

    • 2.4 – 4.5 m

    Features

    • Substantially flush face with 20 off-set radial vanes.
    • High capacity fixed swirl vane VAV diffuser with horizontal discharge
    • Swirl vanes with cambered leading edges reduce noise & pressure loss.
    • Swirl vanes with helical twist for reduced peripheral pitch extend VAV operating range. Patents pending.
    • Bell-mouth extends VAV operating range and provides stable horizontal discharge even with cold supply air  (≥ 5°C, with ?â?ó?é?ê?é?åTsupply-room ≤ 16 K)
    • Optional reducers for reduced airflow rates.
    • Optional blanking segments for 3-way blow (270°) and 2-way blow (2x90° or 180°) discharge
    • Square (standard) or optional round face
    • Installation freely suspended or flush with closed ceiling
    • Clean Screen™ smudge minimser and sweat inhibitor optionally available (patents pending)
    • Similar aesthetic to HSC-AD
    • Perforated square screen available to cover diffuser face

    Function

    The SMARTEMP Fixed Helical Swirl Diffuser, type HSC-FD, produces highly inductive swirl discharge of the supply air, diffusing the strongly diluted air stream radially with fixed horizontal discharge direction into the space.

    Patent pending, offset radial swirl vanes with helical twist and cambered leading edges increase both the maximum airflow rate and the VAV operating range, whilst reducing noise and minimum permissible supply air temperature. 

    The diffuser is made of powder coated galvanised steel and may be flush mounted in a ceiling or freely suspended (ie no Coanda attachment to the ceiling required). The swirl vanes form a flush surface with the surrounding diffuser face, which can be round or square, and may be optionally screened by a perforated face.

    Optional neck reducers may be inserted from behind (thereby not affecting the aesthetics of the diffuser face) to reduce the diffuser neck size to suit reduced airflow rates, in particular in VAV applications.  Segment covers are available to reduce the discharge pattern from 360° to 270°, 180° or 2 x 90° (ie from four-way blow to three-way blow or two-way blow).

    Intense mixing at the diffuser discharge surface strongly dilutes the swirling supply air stream with large quantities of room air.  Rapid temperature equalisation of the diffuser supply air stream with room air is achieved, preventing cold air dumping, thereby ensuring uniform temperature distribution and high comfort levels in the space. Heating performance is also improved. High induction also produces a strong increase in the mass flow rate of the supply air stream, as well as rapid discharge velocity decay. As a result, at any given airflow rate, the SMARTEMP HSC-FD swirl diffuser is suitable both for long throws (due to the high momentum of the swirling supply air stream) as well as short throws (due to its low velocity). 

    The SMARTEMP HSC-FD diffuser may be used in CAV systems, as well as VAV systems, including low-temperature supply air systems with ΔTsupply-room < 16 K. Minimum turndown = 22-28% at ΔTsupply-room = -12 K. Due to high induction swirl discharge, the effective air changes per hour in the space are increased, allowing minimum specific airflow rates as low as approximately 1 L/s/m2 when the diffuser is fully turned down, whilst maintaining enhanced comfort of 90% ADPI. Due to the rapid discharge decay characteristics of the swirl discharge, a high maximum specific airflow rate of 15 L/s/m2 may be achieved at 90% ADPI. 

    Optionally perforated hub with Clean Screen™ discharge of clean, dehumidified supply air screens the diffuser face from smuding and condensation due to air borne contaminants and humid room air.  Well suited to areas with high infiltration, such as lobbies, especially near busy streets and in humid climates.

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  • INCLINED FLOOR SWIRL DIFFUSER ISF-AD

    Overview

    The world's only floor swirl diffuser with user-adjustable airflow rate, air motion and direction.

    Round floor swirl diffuser with user-adjustable air pattern from an inclined air stream to a vertical air plume. Air direction is user-adjustable by rotation of the inclined air stream towards or away from the user for increased or decreased air motion. Airflow rate is user-adjustable for increased or decreased airflow. An optional electric actuator provides VAV modulation. Substantially constant throw height of the inclined air stream to head height of seated occupants prevents cold feet / warm head regardless of the diffuser airflow rate setting. 

    Airflow rate 

    • 10 – 55 L/s (36 – 198 m³/h)

    Nominal size

    • DN200

    Discharge height

    • 0 m

    Features

    • User-adjustable airflow rate.
    • User-adjustable inclined air stream direction.
    • User-adjustable air motion (gentle inclined breeze to draught-free vertical plume).
    • User-adjustability by rotation of the diffuser face.
    • VAV damper user-adjustable or electrically motorised.
    • Constant throw to head height of occupants throughout VAV damper range prevents cold feet / warm head at low airflow rates.
    • Low profile basket and damper assembly, suitable for shallow floor plenum.

    Download Technical Brochure >>

  • LINEAR MULTISTREAM CEILING DIFFUSER LMC-AD

    Linear ceiling slot diffuser with high induction micro-jet discharge, manually adjustable barrel nozzles through 90° from horizontal through diagonal to vertical discharge air streams, for installation flush with ceiling or free-hanging.  Available with 1-way or 2-way blow patterns. Suitable for low temperature supply air (≥ 5°C) and VAV with turndown to 22-28% @ ?â?ó?é?ê?é?åTsupply-room = -12 K. Enhanced ADPI ≥ 90% from approx. 1 L/s/m2 to approx. 15 L/s/m2.  May be mounted flush with ceiling or free-hanging.

    Volume flow rate 

    • 6 – 228 L/s/m (22 – 821 m³/h/m)

    Nominal length

    • 1050 mm
    • 1200 mm
    • 1350 mm
    • 1500 mm
    • Other lengths and joining strips available on request
    • Available with or without end flanges

    Element width

    • Flangeless: n x 28 + 3 mm, where n = number of rows (1 to 6 rows)
    • Flanged: n x 28 + 20 mm, where n = number of rows (1 to 6 rows)

    Discharge height

    • 2.4 – 4 m

    Function

    The SMARTEMP Linear Multistream Ceiling Diffuser, type LMC-AD, is a high induction, multi-microjet linear slot diffuser with adjustable barrel nozzles, which is available with 1-way (adjustable through 90° for horizontal through diagonal to vertical discharge) or 2-way discharge patterns (each direction adjustable through 90° for horizontal through diagonal to vertical discharge).  

    The diffuser may be flush mounted in a ceiling or freely suspended (ie no Coanda attachment to the ceiling required). The diffuser’s 1 to 6-row linear slots (greater slot numbers available on request) comprise a multitude of nozzles with manually adjustable discharge direction adjustment to produce high induction discharge by breaking up the supply air stream into many miniature jets.  The barrel nozzles are made of polycarbonate, dyed black or white, and are located in aluminium extrusions that are anodised or powder coated.

    High aspiration causes intense mixing at the diffuser discharge face, strongly diluting the supply air stream with large quantities of room air. High induction provides rapid temperature equalisation of the supply air stream with room air, preventing cold air dumping, thereby ensuring uniform temperature distribution and high comfort levels in the space. Heating performance is also improved. High induction also produces a strong increase in supply air stream mass flow rate, as well as rapid discharge velocity decay. As a result, at any given airflow rate, the SMARTEMP LMC-AD diffuser is suitable both for long throws (due to the supply air stream's high momentum) as well as short throws (due to the supply air stream's low velocity).

    The SMARTEMP LMC-AD diffuser may be used in CAV systems, as well as VAV systems, including low-temperature supply air systems with ΔTsupply-room < 16 K. Minimum turndown = 22-28% at ΔTsupply-room = -12 K. Due to high induction micro-jet discharge, the effective air changes per hour in the space are increased, allowing minimum specific airflow rates as low as approximately 1 L/s/m2 when the diffuser is fully turned down, whilst maintaining enhanced comfort of 90% ADPI. Due to the rapid discharge decay characteristics of the micro-jet discharge, a high maximum specific airflow rate of 15 L/s/m2 may be achieved at 90% ADPI. .

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  • PERFORATED MULTISTREAM DIFFUSER PMW-AD

    High induction, draught-free side blow diffuser with manually adjustable multi-stream discharge direction, for installation in walls or bulkheads.

    Volume flow rate range

    • 30 – 500 L/s (108 – 1800 m³/h)

    Throw

    • 1.3 – 17 m

    Nominal length

    • 0.6 m
    • 0.95 m
    • 1.5 m
    • Bespoke lengths ≤ 1.5 m available

    Face height

    • 134 mm
    • 173 mm
    • 212 mm
    • 251 mm

    Discharge height

    • 2.5 – 4 m

    Features

    • Highly inductive multi-stream discharge for draught-free comfort.
    • Multi-stream discharge direction manually adjustable via Allen key through diffuser face.
    • Allen key adjustment prevents inadvertent discharge direction adjustment (eg by cleaners).
    • Black plastic discharge elements (ABS, V0 fire rated) located behind the perforated discharge face break the airflow into a multitude of highly inductive individual air streams of differing discharge direction.
    • Adjustable air streams have four different discharge angles, with the outer angles flatter than inner ones, and each may be rotated to one of six discharge directions, ensuring highly inductive, broad dispersion of the supply air flow for draught-free air supply.
    • Perforated discharge face and frame of metal, painted to colour of choice.

    Function

    The SMARTEMP Perforated Multistream Diffuser, type PMW-AD, is a high induction sidewall diffuser with manually adjustable discharge direction.

    High levels of draught-free thermal comfort are provided by the multitude of highly inductive individual air streams discharged from its perforated face.  It is well suited to high comfort applications such as hotel rooms, apartments, restaurants, aged care and offices.

    The patent pending design discharges a multitude of individual, high momentum air streams, each of differing direction. The discrete discharge directions prevent the air streams from coalescing, thereby maximising induction. High induction intensely dilutes each air stream with room air to produce a strong increase in the supply air stream mass flow rate, as well as rapid discharge velocity decay. At any given airflow rate, the SMARTEMP PMW-AD diffuser is suitable for both long throws (due to the high momentum of the moving away from the diffuser) as well as short throws (due to the low air velocity).

    The SMARTEMP PMW-AD diffuser is suitable for substantially CAV systems (turndown to no less than 50%) including low temperature supply air systems in which ΔTsupply-room ≤ -15 K.  Enhanced levels of draught-free comfort are achieved, with air diffusion performance index values (ADPI) typically in excess of 90%.

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  • SWIRL DIFFUSER - HARMONY HARMONY-SD

    Overview

    Swirl diffuser with high induction, fixed horizontal discharge. Suitable for low temperature supply air (≥ 5°C) and CAV or VAV systems.  May be mounted flush with ceiling or free-hanging.

    Airflow range

    • 12 – 400 L/s (43 – 1440 m³/h)

    Supply temperature

    • ≥ 5°C

    Nominal neck sizes

    • DN200
    • DN250
    • DN350
    • DN500

    Discharge height

    • 2.4 – 4.5 m

    Features

    • Substantially flush face swirl diffuser with 24 radial vanes.
    • High capacity CAV or VAV (eg turndown to 32%-38% @ Tsupply-room = -15 K).
    • Suitable for low temperature supply air (≥ 5°C and ∆Tsupply-room ≥ -15 K).
    • Optional neck reducers for reduced airflow rates.
    • Optional blanking segments for 3-way blow (270°) and 2-way blow (2x90° or 180°) discharge.
    • Square (standard) or round face (optional).
    • Installation freely suspended or flush with closed ceiling
    • Optional perforated face screen (down to 50% open area).

    Download Technical Brochure >>