Heat pumps ecoVALVETRONIC Expansion valve controller The ecoVALVETRONIC controls the operation of a bipolar / unipolar expansion valve and is designed to maintain constant overheat/ subcooling of the refrigerant during compressor operation. The controller uses a number of protective algorithms for compressor operation and its system, among others, from the overheating/subcooling of the refrigerant, exceeding the admissible values at the outlet of the evaporator and leakage of the refrigerant. Configuration of controller and valve parameters from the heat pump regulator menu Maintenance and control of too low or too high value of overheating/subcooling of the refrigerant based on measurement of pressure and temperature on the evaporator output (quick correction of valve position) Maintenance and control of the evaporator output pressure Operation via digital input of the bipolar expansion valve (unipolar expansion valve in development) Independent settings of valve operation modes for heating, cooling, defreezing Limitation of the valve regulation range for each valve operating mode The function of forced opening of the valve when switching between modes - stabilization mode Full-step, half-step, quarter-step operation - higher valve resolution and more precise regulation of overheat/subcooling of the refrigerant Refrigerant leak detection (optional) Full valve closure or any valve position after power failure (standard) Reading the status of digital inputs Electronic detection of the end position of the valve Hierarchy of protective algorithms Selection of refrigerant Reading of the second pressure and temperature value Possibility to test the valve motor LED indication of controller and valve operation status and additional alarm signaling by the relay Refrigerant leak detection (optional) Registration of the number of steps performed by the valve and the total duration of alarm conditions for the valve. Benefits The ecoVALVETRONIC provides protective functions of the compressor and its system before: • too low and too high value of overheating/subcooling of the refrigerant • too low and too high pressure on the evaporator output • power failure of the controller and valve - the valve is automatically closed. PLUM Sp. z o. o. ul.Wspólna 19, Ignatki, 16-00

Heat pumps Electrical scheme • • • • • • • • • • • Installing on TS35 DIN rail. Dimensions of the module: 65 mm x 90 mm x 52 mm UZ – earthing GR – grounding strip SUPPLY – power supply 24 VDC/15 W VALVE – expansion valve REL – relay output to control alarm signaling LED1, LED2 - signaling of the control controller operation DIN1, DIN2 – digital inputs T1, T2 – temperature sensors type CT6 PS1, PS2 – electronic pressure sensors with voltage output COM – communication port with heat pump regulator or with the RS485/USB converter. An example of connecting the controller to the electronic expansion...