TROX FBA Round Aluminium Floor Diffusers

Product Overview

The TROX FBA series comprises round aluminium air diffusers designed for installation in floors. These diffusers offer a wide range of applications, accommodating different air flows, installation conditions, and volume flow balancing options through various attachments.

Key Features

• Nominal sizes available: 150 mm, 200 mm
• Volume flow range: 1 – 59 l/s or 4 – 213 m³/h
• Annular diffuser contour with various surface structures
• Suitable for constant and variable volume flows
• Designed for all types of raised floors
• Supports horizontal or vertical air flow
• Features adjustable reduction elements (dirt trap)
• Can be installed with or without a trim ring
• Trim ring facilitates quick and easy installation and removal for cleaning
• High mechanical strength and breaking resistance (> 17 kN)
• Ideal for comfort zones
• Supply air temperature difference: -12 K to +20 K

Product Variants and Descriptions

• FBA-3: Deburred, black lacquered, visible side turned over.
• FBA-3-*-SM: Features an adjustable dirt trap.
• FBA-4-*-KF: Includes a trim ring with spring clip fixing.
• FBA-1-VF: Equipped with a swirl element to adjust the air flow direction.

Application

• Used as supply air diffusers for comfort areas.
• Suitable for installation in raised floors, either with or without a plenum box.
• Can be used in pressurized floors or for individual ventilation in rooms/zones when a plenum box is used.
• Offers vertical supply air flow, with adjustable swirl units allowing for horizontal air routing.
• Serves as an attractive design element with various surface options, appealing to building owners and architects.
• Promotes comfortable and energy-efficient airflow via supporting convection currents.
• Effectively dissipates thermal loads.
• Compatible with constant and variable volume flows.

Special Features

• Simple and quick assembly and covering of the installation opening when using the trim ring and spring clip fixing.
• Installation in hard flooring requires a spacing ring (included if no trim ring is selected).
• Grille insert is torsion-proof and centered when used with a trim ring.
• Dirt trap reduces floor contamination and aids volume flow rate balancing, adjustable from the front or back.

Variants Explained

Setting the Air Flow Direction

• -*: No entry; vertical air flow, inalterable.
• -V: Preset vertical swirling airflow; swirl vane is manually adjustable.
• -H: Preset horizontal swirling airflow; swirl vane is manually adjustable.

Installation Type

• -*-: Floor diffuser with spacing ring.
• -KF: Floor diffuser with trim ring and spring clip fixing.

Dirt Trap Options

• -*: No entry; without dirt trap.
• -SM: With adjustable dirt trap; adjustable on the back, can also serve as a reduction element for volume flow rate balancing.
• -SV: With adjustable dirt trap; adjustable from the diffuser face front, can also serve as a reduction element for volume flow rate balancing.

Plenum Box Options

• -*: No entry; without plenum box.
• -A: With plenum box for connection to the on-site air duct system.

Construction Details

Surface Floor Diffuser (Floor Grille and Trim Ring)

• -1: Deburred diffuser core.
• -3: Deburred diffuser core, painted black, exposed surface overtightened.
• -4: Deburred diffuser core, exposed surface overtightened.

Grille Insert Features

• Ring spacing: 6 mm.
• Height-adjustable dirt trap serves as a reduction element for volume flow rate balancing.
• Adjustable swirl unit for vertical or horizontal swirling air flow or air routing.

Trim Ring Features

• Provides rotation lock and centering for the grille insert.
• Covers the installation opening.
• Spring clip fixing allows for different raised floor magnitudes and compensates for large cut-out tolerances.
• Recommended for the tightest possible fit. Works well with soft flooring like carpet.

Attachments

• Spacing ring for holding the grille insert (for variants without trim ring).
• Trim ring with spring clip fixing to accommodate the grille insert and attach the installation opening.
• Adjustable swirl unit for vertical or horizontal swirling air flow.
• Fixed swirl unit for vertical air flow (available for nominal size 200 only).
• Height-adjustable dirt trap, also serving as a reduction element for volume flow rate balancing.

Accessories

• Plenum box -A: For direct connection to the on-site air duct system, with an incorporated air distribution element for steady floor diffuser flow. Suitable for all nominal sizes.

Material Specifications

• Grille insert and trim ring: Die-cast aluminium.
• Spring clips: Stainless steel.
• Adjustable swirl unit and dirt trap: ABS plastic, UL94-V-0.
• Spacing ring: ABS plastic, UL94-V-0.
• Dirt trap adjustment device and connective material: Galvanised steel.
• Plenum box: Galvanised sheet steel.

Technical Data Summary

• Nominal sizes: 150, 200 mm
• Volume flow range: 1 – 59 l/s or 4 – 213 m³/h
• Supply air temperature difference: -12 K to +20 K
• Crush resistance: > 17 kN