TEMPERATURE & HUMIDITY CONTROLLER FOR FAN COILS OPTIONAL TELEMANAGEMENT 

XTU 618

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  • TELEMANAGEMENT : Enabled with ACB 460 accessory.

APPLICATION

Designed for winter and summer control of the control of room temperature and humidity and/or discharge air in fan coil zones.

Essential sensors:

  • 1 room or air duct temperature sensor.

Optional accessories:

  • 1 flow temperature sensor.

  • 1 outside temperature sensor.

  • 1 room or air-duct humidity sensor.

  • 1 battery frost protection sensor.

  • 1 set-point adjuster.

  • 1 remote control.

FEATURES

  • Power supply: 24V~.

  • Consumption: 5VA.

  • DIN 105 x 115 modular enclosure.

  • Protection: IP 40.

  • Digital programming by means of 4 keys and alphanumeric display.

  • Timed programming: 24hour and 7day.

  • Programming with dates: 25 holiday periods; winter season; summer season.

  • Automatic switching GMT – BST.

  • Winter and summer control of room temperature or of discharge air by:

    • three-wire modulating control or On-Off in two stages.

    • winter and summer minimum and maximum limits of discharge air temperature.

    • maximum temperature differential between winter discharge air and room to avoid stratification of warm air.

    • maximum temperature differential between summer discharge air and room so as to avoid condensation in the discharge air duct.

  • Winter control of room humidity or of discharge air by On-Off control of humidifying unit.

  • Control zone fan and pump by timed program in use.

  • Three-wire On-Off control for season switching primary circuit.

  • Season switching:

    • manual from display.

    • by remote control (manual change-over switch or from other devices).

    • automatic in relation to season.

    • automatic in relation to outside temperature.

  • Control Frosprot temperature battery.

  • Modifying temperature setting by remote control.

  • Remote adjustment temperature setting.

  • One On-Off input for signalling status or alarm.

  • Alarms for plant faults and for open or short sensor circuit.

Code  

Description

Data sheet
XTU 618  

Temperature & humidity controller for fan coils.

E 113
ACB 460   Plug-in per comunicazione via . -

DETECTORS AND ACCESSORIES

Code   Description Application range

Sensing elem. or signal

 Data sheet
STA 010   Air duct temperature sensor (extract, discharge). 0 ... 60 °C NTC 10 kΩ N 150
SAB 010   Room temperature sensor in wall mounting case 80 x 80 x 32. 0 ... 40 °C NTC 10 kΩ N 111
STA 001   Air duct temperature sensor (external). -40 ... 40 °C NTC 1 kΩ N 150
SAE 001   External temperature sensor. -40 ... 40 °C NTC 1 kΩ N 120
SAF 010   Cable-type temperature sensor (Frosprot). 0 ... 40 °C NTC 10 kΩ N 145
SUR 704   Air duct relative humidity sensor. 10 ... 90 % 0 ... 10 V­ N 221
SAU 914   Relative humidity 10 ... 90 % 0 ... 10 V­ N 227
& temperature sensor. 0 ... 40 °C NTC 10 kΩ
CDB 100   Temperature setpoint adjuster. ­5 ... 5 °C - -
CDB 333   Remote control for changing program in use. - - -