en.Wedoany.com Reported - Daikin Comfort Technologies North America has launched a variable frequency drive rooftop heat pump named Nexio Max, designed for light commercial buildings to meet the needs of building electrification projects.
The heat pump utilizes a variable speed scroll compressor and uses difluoromethane (R-32) as the refrigerant. It is available in three cooling capacity specifications: 7.5 tons (90,000 Btu/h), 8.5 tons (102,000 Btu/h), and 10 tons (114,000 Btu/h). The Integrated Energy Efficiency Ratio (IEER) for different models ranges from 21.0 to 22.0, while the Energy Efficiency Ratio (EER) is between 12.1 and 12.4.
In terms of heating performance, the unit achieves a Coefficient of Performance (COP) of up to 3.85 at an ambient temperature of 8.3°C. When the ambient temperature drops to -8.3°C, its heating capacity ranges from 63,000 Btu/h to 80,000 Btu/h, with a COP of 2.5. Daikin states that the unit can operate at ambient temperatures as low as -25°C and maintains 85% of its rated heating capacity at -10°C, making it suitable for cold climate applications.
The core configuration of the Nexio Max includes a single variable frequency drive scroll compressor, two variable speed condenser fan motors, and a direct-drive indoor blower with a speed range of 300 rpm to 1,600 rpm. Standard airflow models support an external static pressure of up to 1.4 inches of water column (in. w.c.), while the high static pressure version can be increased to 2.0 in. w.c. Indoor airflow varies by model, from 2,950 cfm for the 7.5-ton unit to 3,600 cfm for the 10-ton unit.
All models are factory-charged with 335 ounces (9.5 kg) of R-32 refrigerant and are available in electrical configurations of 208/230 V or 460 V, three-phase, 60 Hz. The unit's operating weight is 586 kg, and the shipping weight is 619 kg.
This rooftop unit is suitable for both retrofit and new construction projects. According to the manufacturer, the system's dimensions match the footprint of common rooftop equipment, and many retrofit installations can reuse existing curbs and duct connections without requiring curb adapters. Factory-pre-wired electrical connections and an open access cabinet design simplify installation and maintenance processes.
Standard features include single-zone Variable Air Volume (VAV) operation, native BACnet integration for building automation systems, and compatibility with Daikin's cloud-based HERO monitoring platform. Optional configurations include multi-zone VAV operation and hot gas reheat for humidity control.
