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AET Flexible Space - Underfloor Air Conditioning System Configurations

System Configurations - FlexTouch - Underfloor Air Conditioning

UfAC Systems

Under floor air conditioning (UfAC) systems make use of the plenum beneath a raised access floor to create the air ventilation zone, eliminating the need for ceiling-based services and associated duct and pipework. Each floor is divided into zones of up to 300m² depending on the potential use and occupancy density of the area. Each zone is supplied with chilled or warmed air by a zonal air handling unit or CAM (Conditioned Air Module) and the conditioned air is then delivered into the space using a recessed (Fantile) or floor standing fan terminal. Air travels back to the CAM for re-conditioning either at floor level via the plenum (CAM-C), or at high level (CAM-V). Both CAM-C and CAM-V systems can be configured to be either chilled water (CW) or direct expansion (DX).

Product Overview

CAM Downflow Unit

The CAM-C / CAM-V delivers conditioned air into the supply plenum and receives return air either from the under floor plenum (CAM-C) or at high level (CAM-V) for re-conditioning. The units come with a 3-row coil as standard offering cooling capacities from 8-36kW and airflow from 2,130 to 12,010 m3/h. Options include AC or EC fans, 1-row coil for hot water supply, 2 stage electric heater and humidity control.

Fantile (TU4 / TU350)

The Fantile (Fan Air Terminal) is designed to replace a standard 600mm x 600mm raised access floor panel and is recessed into the floor. It extracts conditioned air from the plenum below the raised floor and introduces it into the workspace and re-circulates room air. Fantiles feature two temperature sensors (floor and room), a motorised damper and the integrated Fatronic allows user adjustment of fan speed and temperature. A master-slave function can be configured for large zones with multiple units. Cooling capacity of up to 2.5kW is achieved with a nominal airflow of 500m³/h. Options include standard or slim-line units, AC or EC fans, electric trim heaters and hot water coil. A minimum clearance of 180mm is required under the floor.

Console (TUC-500)

A floor standing fan terminal unit designed for areas unsuitable, or with inadequate space for recessed terminals. The unit is positioned over an opening in the raised floor, extracts conditioned air from the plenum and delivers it into the space.

Fresh Air

The fresh air model FA7/FA5 draws additional fresh air from outside and delivers it directly into the CAM to mix with spent air often used when central air treatment plants are not installed. They can also be used in the supply zone to boost airflow within large areas. The unit achieves nominal air flows of 430 and 630 m/h.

Supply Air Grilles

Light aluminium alloy grilles featuring hatch access to the Fantile’s integrated controller. Designed to be part of the walkable surface and height adjustable to fit level with different floor finishes. Circular or custom shape grilles and different colour finishes are available on request.

Return Air Grilles (CAM-C Systems only)

Light aluminium alloy grilles. They are designed to be part of the walkable surface and are height adjustable to fit level with different floor finishes. Different colour finishes are available on request.

Floor Boxes (CAM-C Systems only)

Dust collection trays and acoustic cross-talk attenuators are available to fit underneath the return air grilles. The attenuator design is based on 90° duct bend attenuation effect enhanced by a high frequency absorbent lining.

Air Segregation Baffle (CAM-C Systems only)

Fire-resistant and airtight fabric made from glass fibre cloth which is used to divide the underfloor plenum into supply and return air channels.

Raised Access Floor

A raised access floor creates the under floor plenum which becomes the ventilation zone for the supply (and return) of conditioned air. The substructure must have slotted pedestals and stringers is for maximum support and air tightness. 600mm carpet tiles or bonded floor finishes are recommended for future reconfiguration of space as Fantiles are interchangeable with standard 600mm floor panels.


Wall mountable, touchscreen remote controller for Fantiles which allows user adjustment of fan speed and temperature and measures CO2 and humidity. PIR sensor detection available. Master-slave function available for large zones with multiple units.


Display unit allowing visual access and control of CAMs, Fantiles and zone communications. The Flexmatic/Flexmatic Touch can monitor up to 16 CAM.


All CAMs and Fantiles can work independently or connected in a network. Flexvisor BMS software is available for independent remote monitoring and supervision, with local access using network IP address, or remote access using remote access web address. The Flexgateway interface module can connect the UfAC system to the Flexvisor software, or to a central BMS using either Modbus or BACnet protocol.

Underfloor Air Conditioning

Request AET Info

AET Flexible Space
The Center
201-203 London Road
East Grinstead
West Sussex
RH19 1HA

Email AET

Tel: 01342 310400

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