International. Daikin Applied unveiled the Daikin SmartSource Dedicated Outdoor Air System (DOAS), its next generation of heat pump heating technology that enables efficient and cost-effective heating and cooling in all conditions using 100 percent fresh air from outside.
The new unit features SmartBoost Heat Technology, which allows air as cold as 0 degrees Fahrenheit to enter without preheating, all while achieving 49 percent more than the minimum ASHRAE 90.1-2016 efficiency.
"Striking the right balance between keeping fresh, clean air in an entire building, and doing it cost-effectively, is not an easy task, but today it is increasingly important as we think about how to achieve healthy indoor environments," said Alan Youker, Product Manager at Daikin Applied. "The SmartSource Dedicated Outdoor Air System is a new technology for facility managers looking for a reliable and technological way to ensure optimal indoor heating and cooling with unmatched efficiency."
The SmartSource DOAS takes advantage of the hot gas reheating coil of a water source heat pump in addition to the unit's primary DX coil. The resulting heating efficiencies (up to 5.1 ISCOP2 per AHRI 920-2020) along with the latest advances in electronically switched motors and shaftless blower technology help ensure superior performance.
Other key features of the new SmartSource DOAS include:
- The uneven multi-stage compressor tandem that provides eight stages of heating and cooling control, ranging from 100 percent to 30 percent operating capacity.
- Programmable options for constant or variable airflow control, ranging from 70 to 200 percent of the rated airflow, and external static pressures of more than 2 inches achieved in the nominal unit airflow.
- Incorporation of the new MicroTech controller with Daikin BACnet technology, which combines advanced unit control, built-in control logic and intelligent safety functions with an easy-to-use interface. The controller automatically selects between heating, cooling or dehumidification modes of operation, and its dynamic control can achieve discharge air temperature accuracy within one degree under stable conditions.
