High and low pressure switches. Compressor discharge temperature control. Check valve integrated into the compressor discharge. Main door switch. Thermal-magnetic protection for the compressor and fan motor supply line. Automatic switch for the control circuit.
Fire protection. Diagnostic of faults and general alarms. Electronic EC outdoor fans with variable speed control. EC supply air plug fans with CAV or VAV control.
Complete electrical cabinet, fully wired. Insulated vertical unit cover to prevent condensation. IP55 protection. Mechanical ventilation controlled by the electrical cabinet to regulate the temperature and protect the components. Transformer for power supply without neutral. Main earth connection. Compressor and fan motor switches.
CIATrtc electronic control
The CIATrtc control consists of a μPC MEDIUM control board, a pGD1 terminal (local control console) for maintenance and system start-up, and sensors. The control board uses an RS485 field-bus to manage additional components. A communication card (optional) allows the control board to be connected to a centralised management system (CMS). It also manages the local connection between units on a pLAN and information to be exchanged between the units, for a maximum of 15 units.
This control is used to manage additional components, such as: External air damper for the renewal of fresh air according to the temperature of the mixed air (constant) or the air quality sensor (variable). Mixing box for thermal, enthalpic or thermo-enthalpic free cooling. Refrigerating recovery circuit for the renewal of air. Auxiliary electric heater: two-stage with on/off control, or single-stage with proportional control. Auxiliary hot water coil with three-way valve with proportional control. Gas burner with proportional control. Humidifier with on/off or proportional control. Air flow rate controller (for centrifugal fans). Filter fouling level detector. Smoke detection unit. Refrigerant leak detector. Air quality sensor to measure CO2 levels and volatile organic compounds (VOC). Electrical energy meter and calculation of cooling and heating capacities. Zone control for 2 independent areas with dampers
The terminal installed in the box is used to: Carry out initial programming of the unit at system start-up. Modify the operating parameters. Select the operating mode. Adjust the setpoint. Display the variables controlled and the sensor values. Display the alarms on the screen. The terminal can also be directly connected and remotely controlled via a telephone cable from up to 50 m away. For greater distances, please check the options.
Operating mode selection: COOLING/HEATING. Setpoint selection. Continuous monitoring of operating parameters. Display of values measured by the sensors. Compressor time delays. Antifreeze protection (heat pump units). All-season operation using evaporation and condensation pressure monitoring. Control of the supply air temperature. Setpoint compensation based on the outdoor temperature. Hourly and weekly time schedule.
The TCO terminal installed in the electrics box is used to: Switch the unit on/off. Adjust the setpoint. Select the operating mode: COOLING/HEATING. Display the installation's temperatures and humidity, outdoor temperature, supply air temperature, CO2 sensor and the outdoor air damper opening status. Display the alarm codes.
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A
SPACE PF 90 - 360