HCA152W-4 Exigo Ardo - Configurable 24 V heating controller

Exigo Ardo are controllers for heating and boiler control that make every step from installation to operation and maintenance easier than ever. Simply connect the controller, enter any settings as desired and start up. It can be used either stand-alone or integrated into a network. It has built-in support for many different languages and is designed for mounting on a DIN-rail or in a cabinet door.

The Exigo* controllers are BTL listed, click here to go to the BACnet International website where you'll find PICS documents and more information.

Specifications for HCA152W-4
Display -
AI 4
DI 4
UI -
AO 3
DO 4
RS485 ports 1
TCP/IP ports 1
M-Bus ports -
Power consumption 9 VA
Specifications for Exigo Ardo - Configurable 24 V heating controller
Supply voltage 24 V AC ± 15 %, 50...60 Hz or 21...36 V DC
Ambient temperature 0…50°C
Storage temperature -20…+70°C
Ambient humidity Max. 95 % RH
Protection class IP20
Connection Disconnectable terminal strips, 4 mm2
Memory backup Built-in long life battery gives long backup time of all settings incl. real time
Display Backlit LCD, 4 rows of 20 characters
Mounting DIN-rail or cabinet
Casing Standard Euronorm (8.5 modules wide)
Dimensions (WxHxD) 149 x 121 x 60mm
Analogue inputs (AI) For PT1000 sensors (accuracy ± 0.4°C) or 0...10 V DC (accuracy ± 0.15 % of full output signal). 12 bit resolution in the A/D conversion.
Digital inputs (DI) For potential free contacts
Universal inputs (UI) AI or DI
Analogue outputs (AO) 0...10 V DC, 1 mA, short-circuit protected
Digital outputs (DO) Mosfet outputs, 24 V AC or DC, 2 A continuous. Max. 8 A in total.
Ethernet EXOline, Modbus, BACnet/IP, CLOUDigo
RS485 EXOline, Modbus, BACnet MS/TP
M-Bus M-Bus communication

External display


External touch screen display




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