Air Terminal Units (xTU) - AET Flexible SpaceAET Flexible Space

Air Terminal Units (xTU)

The Flexible Space System offers two options to distribute the conditioned air into the work space, either via a recessed or a floor standing air terminal unit. Floor Terminal Units are designed to replace a standard 600 mm x 600 mm floor panel and is fully integrated into the walking surface, thereby maximising usable room space

Each unit contains twin scroll fans driven from a single motor, an open/shut control damper and integrated control unit (Fatronic) which dictates the air flow.  Air terminals can work independently or connected in a network

The plug and play units require no pipework or ductwork connections and are easily relocated offering total flexibility and personalised climate control


TU4 Fantile beneath raised floor











Floor Terminal Units

TU-4: Standard Model that requires a minimum 215 mm clearance within the floor void

TU-S: Slimline Model that requires a minimum 180 mm clearance within the floor void


Console Terminal Unit

TUC500: Floor standing option for areas unsuitable for recessed floor terminals.  The unit is located over an opening in one floor tile and blends into office interiors taking up minimum space


Functions of Terminal Units

  1. Temperature Control: Two sensors located in the terminal read room and under floor air temperatures
  2. Automatic Summer/Winter changeover: independent from the CAM unit
  3. Regulation of Setpoint: the room temperature required can be set by the user
  4. Fan Speed Modulation: Select different fan speeds or lock the fan at a fixed speed
  5. Alarm: Automatic diagnostics where the control activates fan switch-off and isolate the terminal indicating the fault on the display
  6. Master and Slave: Terminal units can be designated as Master or Slave allowing control to be regulated
  7. Electronic Heater Control: A delay can be set between fan actuation and electrical heater activation to ensure greater energy efficiency and avoid current peaks caused by simultaneous start up

More on controls and communication


TUS Fantile with air grilles and central panel


xTU Features

  • Up to 2.3kW – 670 cu.m/h
  • 3 models: TU-4 / TU-S / TUC500
  • No piping or ductwork
  • Integral controller
  • 2 sensors (room and floor temp)
  • Plug and play data cable
  • Local and remote set point adjustment
  • Motorised damper
  • AC and EC Fan options
  • Low noise operation
  • Electric trim heater: 250W / 500W / 1000W
  • Optional hot water coil
  • Floor space saving
  • Relocatable in minutes


FSS Components

Back to AET Flexible Space System



TU4 Fantile Unit

Fantile TU-4

TU-S Fantile Unit

TUSTUC-500 Console Unit




Easy Access to Integrated Controls

 TU_grille access


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