Stamped Swirl Diffuser

air outlets | Ceiling Diffuser

Stamped Swirl Diffuser SD

Construction

Frame

Made from High Quality extruded aluminum Profile with 30 mm flange width1.2 mm (or)1.5 mm thick aluminum sheet.

Blade

A radial array of deflection blades are pressed into a square panel.

Neck

Standard size 250 dia.

Module

600 mm × 600 mm, 595 mm × 595 mm.

Plenum

20 gauge (or) 22 gauge thick GL sheet.

Description

The frame and blades are made from high quality extruded aluminum profiled construction with Powder coated color finish.
Supply swirl diffuser and return swirl diffuser can be supplied with volume damper to control static pressure and the air volume flow rate; installed in plenum box.
The fixed swirl diffuser used for the supply of cooled or heated air.
A high induction is obtained by the exceptional swirl discharge this quickly reduces the difference in temperature and velocity of the induced air.
Suitable for VAV terminal boxes.
This diffuser can also be used for exhaust.
Foam gasket is sealed around the back of the frame as option to avoid air leakage.
Powder coated color finish per RAL color codes as standard and flexibility of finish.

Variants

FSD – Q :

Square diffuser face

FSD – R :

Circular diffuser face

Connection

H:

Horizontal duct connection

V:

Vertical duct connection

Parts & Characteristics

Circular or square diffuser face.
Diffuser faces with radially arranged fixed air control blades.
Plenum box for supply air with an optimized equalizing element that ensures a uniform airflow through the diffuser face.
Simple installation of the diffuser face due to central fixing screw with decorative cap.
Damper blade for volume flow rate balancing ( optional ).

Attachments

Damper blade for volume flow rate balancing or square diffuser face.
Pressure tap and cord – operated damper blade for volume flow rate balancing with the diffuser face in place.

Accessories

Materials & surfaces

Dimension

Technical Information

Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms.
The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air.
Ceiling swirl diffusers allow for large volume flow rates.
The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.
Type SWF ceiling swirl diffusers have fixed blades.
Air discharge is horizontal Omni directional.
The supply air to room air temperature difference may range from -12 to +10 K.
A damper blade (optional) simplifies volume flow rate balancing for commissioning.
Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place.
To give rooms an aesthetic, uniform look, Type SWF diffusers may also be used for extract air.

Plenum Box

Selection

Data obtained from tests conducted in accordance with ANSI/ASHRAE standard 70-2006. Actual performance with flexible duct inlet, may vary in the field.
Throw values given are for terminal velocities of 150, 100 and 50 fpm and for isothermal conditions.
Each NC value represents the noise criteria curve that will not be exceeded by the sound pressure in any of the octave bands, 2 through 7, with a room absorption of 10 dB, re 10-12 watts.
Dash (-) in space denotes an NC Value of less than 10.
All pressures are given in inches of water.
To obtain static pressure, subtract the velocity pressure from the total pressure.

How to order