c-pro 3 HPRU

c-pro 3 HPRU

Controller solution for reversible single-circuit residential heat pumps
c-pro 3 HPRU is a controller solution for managing reversible air-water and water-water (geothermal) single-circuit residential heat pumps with up to 2 compressors.
It consists of:
- a main controller with a choice of a c-pro 3 nano HPRU (with a built-in user interface and touch keys) or a c-pro 3 micro HPRU (available with a built-in user interface or a blind version)
- a possible bipolar stepper electronic expansion valves driver (EVDRIVE03, available with integrated user interface or in blind version)
- a possible remote user interface (Vgraph).
Some controllers integrate an unipolar stepper electronic expansion valves driver.
The solution is based on programmable controller technology and remote user interfaces belonging to the c-pro 3 series.
The system is able to manage both “on-off” and variable speed compressors (with envelope management); it is also able to manage the DHW tank circuit (with stratification and priorities management) and the solar panels circuit.
It has adaptive defrost, antifreeze and “antilegionella” function management.
c-pro 3 nano HPRU is designed to be installed on a panel with snap-in brackets, while c-pro 3 micro HPRU is fitted to a DIN rail in a control panel.
Technical sheet
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Advantages & Main Features

Management of “on-off” and variable speed compressors (with envelope management).
Communication with a possible bipolar stepper electronic expansion valves driver (EVDRIVE03).
Controllers with integrated unipolar stepper electronic expansion valves driver.
Variety of communication ports (RS-485, CAN and USB) and supported communication protocols, to make the integration of the devices in systems easier.
Main controller available with integrated user interface or in blind version.
Management of 2 compressors.
Management of the DHW tank circuit (with stratification and priorities management).
Management of the solar panels circuit.
Adaptive defrost management.

Technical Features

Controller solution for reversible single-circuit residential heat pumps

c-pro 3 nano HPRUc-pro 3 micro HPRUEVDRIVE03Vgraph
EPN2LXP1CPEPU2BXP1CPEPU2BEV1CPEPU2LXP1CPEPU2LEV1CPEPD4BC3EPD4DF3EPV4GBR
Version
blind     
built-in LCD (128 x 64 pixel single colour LCD graphic display)      
built-in LED (4+4 digits custom display)     
Connections
Micro-Fit connectors   
removable spring terminal blocks    
removable screw terminal blocks
Power supply
12 VAC not isolated   
24 VAC/DC not isolated     
Communication ports
TTL for programming     
INTRABUS voltage driven       
MODBUS master RS-485  
MODBUS slave RS-485   
CANBUS CAN
USB   
Other features
real time clock  
alarm buzzer       
unipolar stepper electronic expansion valves driver      
  
Notes
None.
  
Available options
None.

I/O configuration

The following chart shows an example of ready for use configuration for air to water reversible heat pumps, with variable speed compressor, bipolar stepper electronic expansion valves driver (EVDRIVE03), DHW tank circuit management and solar panels circuit management; it is possible to customize the I/O configuration.

c-pro 3 micro HPRUEVDRIVE03
Digital inputs
DI9DHW operation 
DI1high pressure switch 
DI2low pressure switch 
DI3compressor thermal switch 
DI1plant circuit flow switch 
DI2boiler alarm 
DI3fan thermal switch (230 VAC) 
DI4summer/winter 
DI5on/off 
DI6plant circuit pump thermal switch 
DI7DHW tank heaterss thermal switch 
DI8solar panels circuit flow switch/pump thermal switch 
Analog outputs
AO1fan 
AO2compressor 
AO3... AO6not usedX 
Digital outputs (electromechanical relays)
DO1plant circuit pump 
DO2fan enabling 
DO3reversing valve 
DO4boiler 
DO5alarm 
DO6compressor enabling 
DO7DHW circuit valve 
DO8DHW tank heaterss thermal switch 
DO9solar panels circuit pump 
DO1pump down solenoid valve 
Analog inputs
AI1plant circuit supply temperature 
AI2outdoor temperature 
AI3coil temperature 
AI4plant circuit return temperature 
AI5not usedX 
AI6DHW tank top temperature 
AI7DHW tank bottom temperature 
AI8solar panels circuit supply temperature 
AI9solar panels circuit return temperature 
AI1condensing pressure 
AI2discharge temperature 
AI3suction temperature 
AI4evaporating pressure 
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