Radial slot diffuser with adjustable swirl vanes optimised for low-temperature VAV. Adjustable pattern (horizontal/vertical or 360°/270°/180°/2×90°). May be mounted flush with ceiling or free-hanging.

	Location – above: Air supply from above the space, integrated flush with a closed ceiling or freely suspended.
	Mixed flow discharge: High induction swirl discharge intensely mixes supply air with room air. Strong supply air dilution with rapid discharge velocity decay produces draught-free, high momentum supply air motion of uniform temperature distribution over short or long throws.  Ideal for enhanced thermal comfort (ADPI ≥ 90%). Nominal sizes DN300 DN400 DN500 DN600
	Return air: Also suitable for use as a return air inlet.
	Low temperature supply: May be used for low temperature (cold air) supply systems (Tsupply ≥ 5 °C), where ∆Tsupply-room ≥ -16 K.
	VAV dependent throw: VAV throw dependent upon airflow rate. Minimum airflow dependent upon ∆Tsupply-room (eg turndown to 25% and ≈1 L/s/m2 @ ∆Tsupply-room ≈ -16 K).
	Adjustable direction/pattern: Air pattern and direction adjustment from horizontal to vertical, and from 4-way to 3-way or 2-way blow. Horizontal discharge provides draught-free cooling; vertical discharge provides effective heating even from elevated discharge heights.
	Manual adjustment: Airflow direction and pattern adjustment is manual.
	Square face shape: Suitable for standard ceiling grids of up to 600 x 600 mm2 or 24″ square.
	Radial face pattern: Radially aligned vanes provide highly inductive swirl discharge. Radial array may be square or round.
	Plastic Vanes: Black or white adjustable, rectangular plastic vanes.
	Metal Face: Powder coated metal finish.

Options

Circular face shape: Custom face diameter. Suitable for plaster board ceilings or freely suspended applications.

SMARTEMP Slotted Swirl Diffuser SSC-AD

Smarter Design / Smarter Engineering / SMARTAIR DIFFUSION™

The SMARTEMP Slotted Swirl Diffuser, type SSC-AD, is an adjustable blade radial slot ceiling swirl diffuser with manually adjustable discharge direction and pattern.

Supply air is discharged in a highly inductive swirling motion that strongly dilutes the supply air stream as it disperses into the space. Supply air direction is manually adjustable from a horizontal radial to downward vertical discharge. The air pattern may be manually set to 4-way, 3-way or 2-way blow.

The diffuser may be flush mounted in a ceiling or freely suspended (ie no Coanda attachment to the ceiling required).

Radially aligned slots are arranged to create a circular or square perimeter outline in the flat metal diffuser face, which is powder coated. Adjustable vanes, made of black polycarbonate, are located in the linear slots. The standard vane setting provides a horizontal, radially spreading discharge pattern through 360°. Each vane is adjustable to vary discharge from horizontal through diagonal to vertical, or may also be individually closed to achieve 3-way or 2-way discharge patterns.

The patent pending vane design allows high airflow rates to be achieved. High induction produces intense mixing at the diffuser discharge surface, strongly diluting the swirling supply air stream with large quantities of room air to achieve rapid temperature equalisation with room air. This prevents cold air dumping and ensures uniform temperature distribution (no cold and draughty or hot and stagnant spots). High induction produces a strong increase in the mass flow rate of the supply air stream, as well as rapid discharge velocity decay. At any given airflow rate, the SMARTEMP SSC-AD swirl diffuser is suitable both for long throws (due to the high momentum of the supply air stream) as well as short throws (due to its low velocity).

The SMARTEMP SSC-AD diffuser is suitable both for CAV systems and VAV systems that turn down to as low as 25%, including low temperature supply air systems in which ΔTsupply-room ≥ -16 K. Enhanced levels of draught-free comfort typically achieve air diffusion performance index (ADPI) in excess of 90%.

SMARTEMP Slotted Swirl Diffuser SSC-AD

Smarter Design / Smarter Engineering / SMARTAIR DIFFUSION™

Patent-pending features include:

• Air pattern controller with pilot slot reduces pressure drop and increases capacity.
• Low pressure drop reduces fan energy.
• Air pattern vanes with off-set swivel maintain discharge velocity and throw for all discharge direction settings.

SMARTEMP SSC-AD patent applications and granted patents are listed at smartemp.com/patents.

SMARTEMP Slotted Swirl Diffuser SSC-AD

Smarter Design / Smarter Engineering / SMARTAIR DIFFUSION™