Circular Floor Swirl (BZD/SZD/TAFR)

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Circular Floor Swirl (BZD/SZD/TAFR)

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Model BZD

Dimensions
200/125
200/160
250/225
 

Features
Circular Floor Swirl

Description
The floor diffuser BZD is an air diffuser that can be mounted flush with the floor and be used from low to average temperature differences between supply air and room air. The diffuser can be used for cooling and heating with a maximum temperature difference of approximately 6K. Two types of floor diffusers BZD 200 are available: BZD is a diffuser for light load, e.g. underneath permanently fixed seats in cinemas, theatres and concert halls. The supply grille, which is the perforated top element of the diffuser, is manufactured from either steel, powder coated (BZD-N) or stainless steel (BZD-E). BZD + BG incorporates reinforcement for heavy duty ('domestic' according to the European standard for static loading criterias) in open floor areas.

Construction
The diffuser BZD 200 consists of inlet spigot (1) with integral swirl diffuser (2). The perforated top element is manufactured from steel (3) and is fitted above the swirl diffuser. The heavy duty type incorporates reinforcement (4). The dirt trap manufactured from steel (5) together with the internal control damper can be fastened to the inlet spigot by means of a bayonet lock.

Specification
Circular Swirl Diffuser, having a perforated steel front plate, incorporating a secondary swirl device suitable for most floor applications.

Model SZD

Dimensions
200/125
200/160
250/225

Features
Circular Step Diffuser

Description
The staircase diffuser SZD is designed for draught-free introduction of supply air into cinemas, theatres, lecture halls and other assembly rooms. It is vertically mounted into the steps and introduces the supply air near the ground. The staircase diffuser SZD 125 is used for volume flow rates from 6 to 11 l/s with temperature differences between supply air and room air of up to -6 K.


Construction
The visible part of the staircase diffuser is a round (or square) perforated plate, behind which the diffuser with 8 blades (2) and inlet spigot (3) is located. The perforated plate (4) is used as flow straightener as well as a variable flow controller.

Specification
Circular Diffuser having a perforated steel front plate and connecting spigot suitable for most low sidewall/step applications.

Model TAFR

Dimensions
Model TAFR is supplied in a standard nominal size of 200mm diameter and is available in two standard finishes: Black or Grey.

Features
Circular Floor Swirl

Description
Model TAFR circular floor swirl diffuser blends both form and function into its design. The diffuser face possesses a series of curved slots, which provides a high induction helical air pattern and yet results in an astonishingly low plenum pressure, making it ideal for most applications using pressurised under floor air distribution systems. Cleverly incorporated into the design is a manual air volume damper, which is easily adjusted by simply rotating the diffuser face. Each diffuser is supplied with M6 grub screws as a damper locking screw. Visual status of the damper position is via the external open/close indicator coupled with the internal open/close stop. There is no need to remove the diffuser face, a unique feature only found in the Model TAFR. Each diffuser also includes a dirt/dust collection receptacle, which is easily removed for cleaning.

Construction
Constructed from durable high impact polycarbonate material, manufactured to comply with UL 94-5V standard for flammability and smoke.

Specification
Circular Swirl Diffusers, from high impact polycarbonate material, suitable for applications requiring high induction air distribution.