Autonomous cooling only air-to-air Rooftop unit, for the thermo-hygrometric treatment, filtration and air renovation, in medium-large surface and volume ambient, such as supermarkets, shopping or exhibition centres. Hermetic rotary scroll compressors with R410A refrigerant; double refrigerant circuit; aluminum structure and coated galvanized steel base; air treatment section with sandwich panel and EC plug fans. According to the selected version, the unit allows for the management of free cooling, with supply and return fans with motorized dampers for return, expulsion and fresh air. The unit is also available with the thermodynamic Refrigerant Booster heat recovery or air-to air Plate type, to recover the energy from the exhaust air, increasing the units capacity and the global efficiency.
The AIR3000 TE controller offers advanced functions and algorithms. It is made up by two control boards, dedicated to the air side and the refrigerant side respectively. The keypad features functional controls and a complete LCD display that allows for the monitoring and intervention on the unit by means of a multi-level menu with selectable user´s language.
The step proportional capacity adjustment is based on the return temperature; proportional-integral management can also be set. Its functions include the adjustment of the ambient humidity, the thermal or enthalpic (optional) free-cooling and supply temperature limitation. Defrosting is based on a self-adaptive propriety logic with monitoring of several operating and environmental parameters. The management of the ventilation can be realized with constant air flow regulation (optional): as pressure drop varies, the fans change speed so as to
maintain the flow-rate at the designed value for the system, regardless of filter clogging.
The controller allows to integrate and automatically manage different optional thermal resources (hot water coil, electrical heater and gas thermal module), hot gas post-heating (optional) and the fresh air percentage (optional with CO2 sensor or remote signal 4-20 mA).
The presence of the programmable timer allows the user to create an operating profile containing up to 4 typical days and 10 time bands.
The diagnostics comprises a complete alarm management system, including ‘black box’ (via PC) functions and an alarm log list (via display or also a PC) for optimized analysis of the unit performance.
Supervision can be easily developed via proprietary devices or via third party systems by means of the most common protocols as ModBus, Bacnet, Bacnet-over-IP, Echelon LonWorks protocols.
Compatibility with the remote keyboard managing up to 8 units.