Johnson Controls has launched the York YZ magnetic bearing centrifugal chiller, the first chiller fully optimized for ultimate performance with a next generation low-global warming potential (GWP) refrigerant – R1233zd(E).

Chosen for its efficiency, safety, availability, low environmental impact and cost, nonflammable R-1233zd(E) has an ultra-low GWP of 1 and is readily available from refrigerant manufacturers.

Speaking at the launch, the vice president of Chiller Solutions, Building Technologies & Solutions at Johnson Controls, Laura Wand, said the company has a long history of leading the industry in chiller innovations.

“With the new YORK YZ, we have engineered the world’s most efficient low-GWP line of centrifugal chillers,” Wand said. “Our broad range cooling capacity will serve our customers’ many diverse application needs.”

She said Johnson Controls used a holistic approach to system design and engineering, optimizing every component around a carefully selected next generation refrigerant for ultimate performance.

The YORK YZ chiller uses an integral, variable speed drive and advanced magnetic bearing technology that features a single moving assembly suspended in a magnetic field that does not require lubrication.

This technology requires 80 per cent fewer moving parts than traditional oil- or refrigerant-lubricated drivelines. “The result is enhanced reliability, reduced maintenance and improved efficiency. Compared to traditional fixed-speed oil-bearing chillers, the YZ delivers up to 35 per cent annual energy savings,” Wand said.

The YZ chiller can deliver significant energy savings and lower operating costs by taking advantage of the off-design conditions where chillers operate 99 per cent of the time. The YZ operates with entering condenser water temperature as low as 40°F (4.5°C), providing enhanced performance in every operating condition and the widest operating envelope in the industry.

Wand said the YORK YZ uses an optimized single stage design to provide industry-leading real-world energy efficiency.

The chiller can also operate with condenser temperatures below the evaporator temperatures, eliminating the need for a water-side economizer, which simplifies the system, requires less mechanical room space and saves money on components, piping, controls and maintenance, according to Bill Jackson, president of Global Products, Building Technologies & Solutions at Johnson Controls.

“We continue to deliver industry-leading chiller options that best meet the needs of our current and continually expanding customer base around the world,” Jackson said.

“The YZ is another fantastic platform system that equips our customers with environmentally friendly performance in an optimized solution. Thank you to our YORK Chiller team for leading the way.

“The YZ chiller brings together groundbreaking YORK innovations refined over decades of real-world use to create a revolution in chiller design and optimization. It represents a solution from the chiller experts, who like to think of the YORK YZ chiller as tomorrow’s chiller, available today.”

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