York Capacity Modulation Options:
York Embraces the Rawal APR Control® Valve for Superior Capacity Modulation
In a recently released white paper, York®, one of the leading HVAC manufacturers, dives into the changing landscape of capacity modulation technologies for commercial rooftop units (RTUs). The paper highlights the growing importance of capacity modulation in achieving energy efficiency, expanding product applications, and improving humidity control. Among the various options discussed, York showcases its support for the Rawal APR Control® Valve, recognizing its unique benefits and positioning it as a preferred alternative to traditional hot gas bypass systems as a factory installed option on select equipment lines.
The Rise of Capacity Modulation
Historically, capacity control in package units was limited to compressor staging. However, advancements in technology have brought in a new era of capacity modulation, with options like inverter-controlled compressors, digital compressors, and the Rawal APR Control Valve gaining prominence. Ideally, these technologies enable RTUs to adjust their cooling capacity output to match the fluctuating demands of the building or space, leading to significant energy savings and improved comfort.
The Rawal APR Valve: A Superior Solution for Capacity Modulation
The APR Control stands out as it is a completely mechanical device that provides continuous capacity modulation for direct expansion (DX) air-conditioning systems. By externally unloading the compressor and maintaining the suction pressure, the APR Control allows the system to precisely match the cooling load, ensuring optimal dehumidification and reduced energy consumption.
Key Advantages of the Rawal APR Valve:
- Enhanced Energy Efficiency: The APR Valve reduces energy consumption by dynamically adjusting the compressor’s workload, eliminating the energy waste associated with hard starts and stops (short cycling).
- Improved Humidity Control: By extending the runtime of the compressor through matching the cooling load demand, the APR Control enables the evaporator coil to remain active for longer – resulting in improved moisture removal. Ensuring superior humidity control and creating a more comfortable indoor environment.
- Expanded Applications: The APR Control can be installed in any new, or existing in-place DX Air Conditioning System. York mentions that the precise capacity control offered by the APR Valve enables smaller tonnage RTUs to be used in a wider range of applications, including Single Zone VAV (SZVAV), Variable Air Volume (VAV), Variable Volume and Temperature Control (VVT), and Change-Over Bypass (COBP) applications.
- Simplified Installation and Maintenance: The APR Control is available as a factory option on new equipment, however it can be seamlessly retrofitted into new or existing equipment. The installation is simple and it is easy to maintain, minimizing downtime and service costs.
York’s Capacity Modulation Endorsement
York’s white paper underscores its confidence in the Rawal APR Control Valve by highlighting its advantages over hot gas bypass and comparable performance to other modulation technologies. Furthermore, York is demonstrating its commitment to the APR Valve by offering it as a factory-installed option on select equipment lines. This move makes it easier than ever for customers to experience the benefits of the APR Control and achieve optimal performance from their HVAC systems while maintaining the factory warranty on their equipment.
Conclusion
York’s white paper serves as a valuable resource for HVAC professionals seeking to understand the latest advancements in capacity modulation. By showcasing the benefits of the Rawal APR Valve and offering it as a factory-installed option, York is empowering contractors and facilities managers to embrace this cutting-edge technology and deliver superior HVAC solutions to their clients.
