YMAA/YMPA Air Cooled Scroll DC Inverter Chiller & Heat Pump

Description

Exceeding Efficiency Standards

The YORK® YMAA and YMPA Series Air-cooled DC Inverter Scroll Chiller and Heat Pump have been designed to meet tomorrow’s efficiency standards today. Delivering performance beyond typical chiller and heat pump efficiency levels, the YORK® YMAA and YMPA Series meets or exceeds stringent regulatory requirements (see chart, below) through an optimized combination of YORK® efficiency-enhancing technologies.

Direct current (DC) inverter technology provides variable capacity control and allows YMAA and YMPA Series chiller compressors to operate more efficiently across all Cooling load and ambient temperature conditions versus Constant speed chillers that use a step unloading design.

Electronically commutated (EC) fans use more efficient motors and better aerodynamics to improve overall system efficiency and sound performance, particularly at part load. At reduced ambient temperatures, the head pressure control varies fan speeds to optimize the system efficiency and ensure reliable operation. This combination of variable speed compressor and fans provides a displacement power factor as high as 0.93, lowering electricity costs.

High efficiency brazed plate heat exchanger uses less refrigerant and transfers heat from the liquid to refrigerant more efficiently, providing excellent heat transfer performance in a compact size. This also results in a lower water side pressure drop, allowing the use of smaller pumps and further minimizing building power consumption.

Tandem compressor design uses several circuits, which improves off-design and part-load efficiency by using the entire surface area of the heat exchanger at all conditions while also providing partial redundancy.

Performance Without Compromise

The YORK® YMAA and YMPA Series is a no-compromise solution for a variety of climates and locations. Built specifically to deliver better performance through a wider operating envelope, the YMAA and YMPA chiller and heat pump can maintain efficiency in a variety of conditions without kits or add-ons – down to an impressive -18°C ambient in cooling mode and -15°C ambient in heating mode.

With the smallest footprint across the widest capacity range on the market, the YORK® YMAA and YMPA Series is also the perfect solution for high performance in smaller spaces. Installation is simplified with a compact size that permits forklift loading, and a modular configuration allows units to be arranged in varying footprints to fit different space requirements. This unique modularity means capacity can be increased incrementally as buildings are being constructed or spaces are becoming occupied. And if maintenance is required, other modules in the system will continue to operate, helping to reduce downtime and loss of capacity.

We want to ensure our neighbors are comfortable too, even in retrofits. That’s why our systems offer two levels of sound performance. If requirements call for sound attenuation beyond our standard low-noise levels, an optional Ultra Quiet Kit can further reduce sound power by an impressive 6 dBA, providing one of the quietest units available.

A History of Reliability

When your reputation is at stake, count on efficient, reliable cooling and heating solutions from YORK® to lower costs and maximize uptime with dependability you can count-on. Our locally based stocking allows quick shipment to European locations. And with our units shipping as a complete package, everything arrives at the same time. We also offer a variety of standardized, locally stocked parts to ensure our systems continue to provide maximum uptime in every installation.

With the YORK® YMAA and YMPA Series Air-cooled Scroll Chiller and Heat Pump, we’re building on our legacy of cooling solutions and technology leadership. We don’t judge success based on theoretical findings, but real-world experience. Our first-generation modular chiller was built over a decade ago. We use DC inverter technology proven in over three decades of use. Our use of inverter scroll technology dates to 1985. And every new YORK® chiller is subjected to a Highly Accelerated Life Test (HALT) during the design product development stages, allowing us to simulate a variety of extreme conditions and ensuring long-term operational reliability and quality. But our pursuit of quality doesn’t stop there.

• Decades of extensive air-cooled expertise is backed by proven components used in installations across the globe and in a variety of conditions.
• Tandem compressor management improves overall reliability by balancing system operation time between each compressor.
• Smart logic controller coordinates and optimizes units for off-design and part-load operation.
• Intelligent defrost optimizes the sequencing of the defrost cycle and allows the remaining modules in the system to continue to provide heat, reducing interruptions.
• Compliance and certifications include EcoDesign 2021 regulatory compliance, Eurovent certification and CE/PED certification.

The YORK® YMAA and YMPA Series is a no-compromise solution that delivers industry-leading efficiency, unmatched flexibility, world-class sound performance, extensive control capability and long-lasting reliability. These highly optimized designs use advanced components and innovative thinking to provide the best-in-class performance only the worldleader in chiller solutions could deliver.

YMAA: Cooling only units models.

YMPA: Air to water heat pump models.

Nominal conditions: Cooling capacities in kW given for 7°C water leaving temperature ∆t 5°C and 35°C ambient temperature Heating capacities in kW given for 45°C water leaving temperature and 7°C ambient temperature SEER and SCOP calculated according to EN14511 and EN14825 ηs and SEPR calculated according to Ecodesign regulation for chillers comfort cooling and heating and process cooling (813/2013, 1095/2015 and 2281/2016)