Regulator assembly 230V MR-2 MEIH-10560.2

Complete Temperature Control System for Logoterm Installations

The MR-2 solution is a ready-to-use kit that eliminates the need to select and connect separate components for heating control in a single room. The kit includes an electronic room thermostat and a thermal closing actuator powered by 230 V. The entire assembly is designed to operate as a closed control loop for zone valves in Logoterm systems. This provides the installer with a ready-made module for mounting and the end user with a simple heat regulation mechanism without the need to configure complex algorithms.

The device operates in On/Off mode, meaning the actuator opens or closes the flow of the heating medium depending on the current room temperature. The thermostat has no display or backlight, which simplifies its appearance and reduces the number of potential failure points. Temperature setting is performed via a rotary knob, which is intuitive for every household member. It is worth noting that the manufacturer has locked the minimum setting value at 16°C – this is a safeguard against accidentally setting a temperature that is too low, which could lead to overheating of the premises or condensation of water vapor on heating elements.

Application and Key Design Features

This assembly is primarily used in apartments and single-family houses equipped with underfloor or radiator heating systems controlled zonally by Logoterm. The lack of weekly programming functions or radio communication makes this a solution dedicated to applications where reliability and simple "set-and-forget" operation are the priorities. It does not support DHW (domestic hot water) functions, confirming its exclusive dedication to regulating indoor air temperature.

The main advantages of this kit stem from its simple yet effective construction:

• 230 V Power Supply – allows direct connection to the standard electrical network without the need for additional transformers or 24 V power supplies at 50/60 Hz frequency.
• Electronic Precision – despite the absence of a digital display, the thermostat uses electronics to precisely detect temperature changes and respond appropriately with the actuator in On/Off mode.
• Setting Lock – prevents accidental reduction of the temperature below 16°C, which is crucial for thermal comfort and energy savings.
• Compatibility – the device was specifically designed for cooperation with zone valves of the Logoterm system, ensuring proper operation of the entire hydraulic circuit.

The total weight of the assembly is only 0.3 kg, facilitating installation even on hard-to-reach manifold valves. The absence of a floor sensor means the device responds exclusively to conditions in the room air (air temperature) and not directly to the heat of the floor. This is a typical solution for standard residential installations, where thermal comfort is defined by the occupants' sensations in the breathing zone.

Installation and Operating Conditions

Installation of the MR-2 assembly requires basic electrical knowledge due to the 230 V operating voltage. The actuator is integrated with the thermostat in a way that ensures their mutual operation without the need for additional signal wiring between these two elements – they are already factory-connected as a single functional unit. The device has no alarm functions or remote control panel, focusing its operation solely on maintaining the set temperature by opening and closing the flow of heating water. This is an ideal solution for installers seeking a proven component for simple zone installations and for users preferring classic solutions without unnecessary digital complications.