c-pro 3 micro AHU & c-pro 3 kilo AHU

c-pro 3 micro AHU & c-pro 3 kilo AHU

Controllers for single or double flow air handling units with seasonal (with 1 coil) and annual (with 2 coils) operation
c-pro 3 micro AHU and c-pro 3 kilo AHU are controllers for managing single or dual-flow (with heat recovery) air handling units operating with 1 or 2 treatment coils. The coils can be electrical, water-activated or direct expansion.
They are available with integrated user interface or in blind version with a possible remote user interface (Vroom); the interface incorporates a temperature and humidity sensor (whose readings can be transmitted via BUS).
The controllers are able to manage the return fan and the supply fan independently (up to 3 speeds or modulating); they are also able to manage the external damper, the bypass damper and the mixing chamber damper.
They can manage the humidifier (both “on-off” and modulating) and the ventilation modulation, according to the supply static pressure and according to the room air quality.
c-pro 3 micro AHU is available with Micro-Fit connectors (for low voltage signals) and power supply 12 VAC; c-pro 3 kilo AHU is available with removable clamp terminal blocks (for low voltage signals) and power supply 24 VAC/DC.
Installation is on DIN rail, into a control panel.
Technical sheet
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Advantages & Main Features

Variety of controllable air handling units.
Independent management of the return fan and the supply fan (up to 3 speeds or modulating).
Management of the external damper, the bypass damper and the mixing chamber damper.
Variety of communication ports (RS-485, CAN and USB) and supported communication protocols, to make the integration of the devices in systems easier.
Humidifier management (both “on-off” and modulating).
Management of the ventilation modulation according to the supply static pressure.
Management of the ventilation modulation according to the room air quality.
OEM-oriented controllers.
Remote user interface with integrated temperature and humidity sensor (whose readings can be transmitted via BUS).

Technical Features

Controllers for single or double flow air handling units with seasonal (with 1 coil) and annual (with 2 coils) operation

c-pro 3 micro AHUc-pro 3 kilo AHUVroom
EPU2BXP1AHEPK3BXP1AHEPK3DXP1AHEPV4RBR
Version
blind  
built-in LCD (128 x 64 pixel single colour LCD graphic 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   
MODBUS master RS-485 
MODBUS slave RS-485 
CANBUS CAN
USB 
Other features
real time clock
alarm buzzer  
  
Notes
None.
  
Available options
None.

I/O configuration

The following chart shows an example of ready for use configuration for double flow air handling units with annual (with 2 coils, by water reversible and electric heating) operation, with both modulating return and supply fan; it is possible to customize the I/O configuration.

c-pro 3 micro AHUc-pro 3 kilo AHUVroom
Analog outputs
AO1reversible coil (water) mixing valve 
AO2supply fan 
AO3return fan 
AO4... AO6not usedXX 
Digital outputs (electromechanical relays)
DO1supply fan enabling 
DO2external damper 
DO3return fan enabling 
DO4bypass damper 
DO5heating coil (electric) 
DO6... DO9not usedXX 
Analog inputs
AI1supply temperature 
AI2outdoor temperature 
AI3... AI9not usedXX 
AI1... AI2not used  X
Digital inputs
DI1supply fan thermal switch 
DI2external damper limit switch 
DI3return fan thermal switch 
DI4antifreeze switch 
DI5heating coil (electric) thermal switch 
DI6differential pressure switch 
DI7... DI9not usedXX 
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