CMP25-2 is a compact weather compensated controller, intended for controlling one mixing heating circuit. It is installed into the actuator housing. It is equipped with a large graphic LCD touchscreen for settings and operation monitoring.


Application CMP 25-2

  • CMP is used in demanding room heating and cooling systems as an extension controller.
    Several controllers may be interconnected into a complex system with a BUS connection.
  • For controlling simpler heating systems with one mixing circuit system


Advantage CMP 25-2

  • you can use it as an expansion controller in more complex space heating or cooling systems,
  • you can use it for control of simple heating systems with a single mixing circuit,
  • built in the actuator housing with direct mounting onto the mixing valve,
  • direct installation to more than 20 mixing valves,
  • adjustable return flow temperature,
  • 2 preset hydraulic diagrams,
  • multiple controllers can be interconnected into a complex system using the BUS connection,
  • equipped with a touch screen to set up and monitor operations,
  • the option of connecting 1 room unit,
  • the SeltronHome platform connectivity allowing remote control via smartphone or tablet.

CMP can be used as an expansion controller in more complex space heating or cooling systems. Multiple controllers can be interconnected into a complex system using the BUS connection. 
For controlling simpler heating systems with one mixing circuit 
No. of preset hydraulic schemes2
No. of room units1
No. of mechanical relays1
No. of temperature sensor inputs4
Possibility to make an interconnection between several CMP controllers and also other Seltron controllers with a
BUS connection
Heating system with radiators 
Floor heating system 
Convector heating system 
Wall and ceiling heating systems 
Mixing heating circuit 
Room heating or cooling according to the time programme 
Automatic winter/summer mode switchover 
PARTY function – activation of the comfort operation mode 
ECO function – activation of the economy operation mode 
HOLIDAY function – activation of the operation mode during the holiday season
BOOST function for intense room heating 
Function for screed drying 
Storage tank overheating protection 
Boiler overheating protection 
Periodic starting up of pumps and mixing valves during a period of inactivity 
Limiting the maximum supply temperature for floor heating 
Graphic display of temperatures according to days of the last week 
Detailed display of temperatures for the current day 
Notifications on the activated protection functions and warnings about system failures 
Possibility to simulate sensors and analyse the system operation 
With a separate dedicated cable, the controller can be connected to a computer 
Connectivity to the SeltronHome platform providing remote control using a smartphone or tablet 
Wizard for an easy and quick device start-up 
14-language user interface
Languages: EN, DE, FR, NL, PL, ES, SL, IT, CS, LT, GR, HU, HR, RU
Setting up the operation by selecting the hydraulic scheme 
“Help” button for quick help with the setup 
Graphically adjustable time programmes 
Logging and display of changes made to the setup 
Option for retrieval of the basic setup in the event of data loss or unwanted changes 
Simple installation and connection 

Backlit graphic touch screenyes
Weekly program timeryes
Torque6 Nm
Connection voltage230 V~, 50 Hz +/-10 %
Own consumption4 W
Power consumption at standbyMax. 0.5 W
Pump output (R1) 230V ~, / 4 (2) A
No. of inputs4 pcs temperature sensor (Pt 1000)
Clock chargingBattery CR2032 (Li-Mn) 3 V
Time display accuracy+/- 1 s (24 h) at 20°C
Protection degreeIP42 according to EN 60529
Protection classI according to EN 60730-1
Operation type1B according to EN 60730-1
Temperature sensor typePt1000 or KTY10
Operation type3-point PID
Housing materialPC – thermoplastic
Operating temperature0÷40 °C
Storage temperature-20÷65 °C
Weight817 g
No. of pieces in the packing unit12 pcs
Dimensions (width × length × height)
84 x 102 x 96mm
Electrical connection