Temperature regulator Euroster UNI 4 by Euroster — control for 2 pumps and mixing valve

Euroster UNI 4 is a temperature regulator designed for heating systems that controls two pumps and a mixing valve. It provides centralized regulation of system temperature, enabling staged pump operation and proportional mixing valve adjustment to hold setpoints. The controller is intended for residential and small commercial heating installations where coordinated management of heat distribution and return temperatures is required.

Advantages

UNI 4 combines pump sequencing and mixing valve control in one compact unit, reducing the need for separate controllers. The regulator supports staged operation of two circulation pumps and a mixing actuator to maintain target flow or return temperatures. Built for straightforward integration, it simplifies wiring and system logic for installers and allows practical adjustment of temperature setpoints and delays for reliable operation.

Suitable for

• Central heating systems in single-family homes
• Small apartment buildings or light commercial premises
• Systems requiring coordinated control of circulation pumps and a mixing valve
• Retrofit projects where space for additional control modules is limited

Key specifications

• Control targets: two circulation pumps and one mixing valve actuator
• Temperature regulation: centralized setpoint control with staged pump activation
• Mixing valve control: proportional adjustment to maintain set temperature
• Inputs/outputs: electrical control outputs for pumps and valve actuator (voltage/current type depends on installation)
• Installation type: wall- or panel-mounted controller for heating system cabinets
• User interface: adjustment dials or buttons for setpoint and timing configuration

How to use

Install the Euroster UNI 4 in the heating system control cabinet or on a suitable wall surface following local electrical regulations. Connect temperature sensors, pump power outputs and the mixing valve actuator according to the wiring diagram provided by the manufacturer. Configure the desired temperature setpoint and define pump staging thresholds and delays using the controller’s settings. After commissioning, monitor system temperature and adjust setpoints or delay parameters as needed to achieve stable operation.

Usage recommendations

For reliable performance, use compatible temperature sensors and actuators specified by the system designer or installer. Verify electrical ratings of pumps and valve actuators before connection and protect circuits with appropriate fuses or breakers. Schedule regular inspections to ensure sensors and actuators remain functional and recalibrate setpoints when changes to the heating system are made.