YORK+YK Centrifugal Chiller

Model YK—centrifugal compressor
Unique Features: OptiSpeed™ variable-speed drive, heat-recovery capability,
quick start feature, OptiSound™ control, OptiView™ control panel, equipped with
Smart Connected technology – a cloud-based analytics and monitoring system
Ideal Applications: comfort cooling, heat-recovery sites, data centers

Employees are productive, students can easily focus, and
patrons have a better experience when their surrounding
environments are quiet. Noisy chillers, especially at part load,
can interrupt daily activities and create complaints. Johnson
Controls developed the OptiSound control for YORK chillers
to greatly reduce chiller sound levels.
The OptiSound control, available on model YMC², YK, YK-EP,
YD, YST and CYK centrifugal chillers, is a patented combination
of hardware and software that reduces operational sound
and vibration levels, expands the chiller operating range,
and improves chiller performance and reliability. OptiSound
control delivers the quietest centrifugal chiller products on
the market from 215 to 6,000 TR (755-21,100 kW).

• Johnson Controls patented technology
delivers the quietest centrifugal chiller
products on the market
• Available on YORK® model YMC², YK, YK-EP,
YD, YST and CYK centrifugal chillers
• Provides expanded operating range
• Improves chiller performance and reliability
• Ideal for apartments, auditoriums, classrooms

Minimize gas fl ow noise
Chillers create sound as the refrigerant fl ows through the system.
During part load, the fl ow can separate from the walls of the
compressor’s diffuser. This condition, known as “diffuser stall,”
substantially increases sound and vibration. The OptiSound control
continuously monitors the characteristics of the compressor-discharge
gas and optimizes the diffuser to minimize gas fl ow disruptions.
This innovative technology decreases the operating sound levels of
the chiller an average of 7 dBA and up to 13 dBA on the largest models.
The human ear recognizes a change of 10 dBA as being half as loud.
Therefore, with OptiSound, the chiller sound is perceived as approximately
half the sound of a similar chiller without this unique technology.
Improving performance and reliability
In addition to noise suppression, the OptiSound control provides an
expanded operating range. It improves performance and reliability
because diffuser-gas stall is minimized at off-design operation,
particularly conditions of very low load combined with little or no
condenser water relief. This gives the chiller better effi ciency over an
expanded range of operation.
The technology improves system reliability, allowing units to continue
operation with higher condenser water temperature than design. For
example, a cooling tower or condenser pump problem may result in
reduced fl ow or elevated temperatures. But a chiller with OptiSound
control will continue to operate while other units are in stall, surge,
or shut down.

of features for total owner satisfaction.
MATCHED COMPONENTS MAXIMIZE EFFICIENCY
Actual chiller efficiency cannot be determined by analyzing the theoretical efficiency of
any one chiller component. It requires a specific combination of heat exchanger, compressor,
and motor performance to achieve the lowest system kW/ton. YORK chiller technology
matches chiller system components to provide maximum chiller efficiency under
actual – not just theoretical – operating conditions.
REAL-WORLD ENERGY PERFORMANCE
Johnson Controls pioneered the concept of “Real-World Energy” to illustrate the energysaving
potential of focusing on chiller performance during off-design conditions. Off-design
is not only part load, but full load operation as well, with reduced entering condenser
water temperatures (ECWTs). This is where chillers operate 99% of the time, and where
operating costs add up.
YORK centrifugal chillers are the only chillers designed to operate on a continuous basis
with cold ECWT and full condenser flow at all load points, taking full advantage of Real-
World conditions. This type of operation benefits the cooling tower as well by reducing the
cycling of the fan motor and ensuring good coverage of the cooling fill.
YORK centrifugal chillers offer the most efficient Real-World operation of any chiller,
meaning lower operating costs and an excellent return on your chiller investment.
OPEN-DRIVE DESIGN
Hermetic motor burnout can cause catastrophic

York (Wuxi) air Conditioning and Refrigeration Co. Ltd, Located in Wuxi National High-tech Industrial Park, Jiangsu province, China. Covers an area of 60000 square meters, of which the heavy machine factory building takes up 14,000 square meters. At present, the company has about 500 staffs, in the field of large-size units. York Wuxi is the largest manufacturer in Asia –pacific region with an annual output of more than 3600 sets. Its products not only top on market share in China, but also see tremendous growth in export in recent years.

York Wuxi has six production lines in total, of which five are automated lines, including one air-cooled screw production line, one large-size water-cooled screw unit production line, one small-size water-cooled screw unit production line, and two centrifugal unit production line. All production line adapt the DFT technology, being the first in the industry. The entire work process is compact and rational. With the efficient management method (such as four-color light), these lines have become the most compact, most efficient and most advanced production line in the industry.

York Wuxi is equipped with globally advance equipment in every step of its production process, including:

Most advanced plasma digital cutter which can be used under water

Efficient digital plate bending machine with a roll length up to 4.8 meters

LINCO DC submerged arc welder imported from USA which is the most advanced equipment in the world.

Most advanced digital drill press in the industry.

Four large-sized chiller comprehensive performance test branches, (test capacity per set up to 2000 cold tons, for 10KV high voltage tests and frequency conversion tests), presenting the most advanced level in China.

YORK (CHINA) introduced the Performance Excellence Mode since the beginning of its operation. This mode adopted by most world-class enterprises focuses on the customers. It learns, meets and exceeds the customers’ needs and serves society through its human-oriented strategy and corporate culture. Based on the effective QEHS management system and advanced management tools (e.g. six-sigma).YORK (CHINA) consolidates its leading status in the industry.

1.   YORK RESEARCH AND DEVELOPMENT

In December 2004, to provide high-quality and competitive air conditioning products and refrigeration equipments to the Asia-Pacific region and on the parts of the world, YORK set up the YORK Asia Pacific research and development center in

Wuxi.

The center has the most advanced software systems, highly qualified professionals, and various test equipments and systems. The air-cooled test bench, unique in China and the largest in the

Asia-Pacific region, which has complete spring base for the equipment vibration test, can lower the noise to 20db by means of muffle devices. It also can carry out the working environment temperature simulation test by changing the indoor temperature via air conditioning and refrigeration system.

Since its establishment, the R&D center is dedicated to development efficient, energy saving, environment friendly products with independent intellectual property and unique technology and to the research of thermal conductivity, noise vibration and reliability to meet the needs of refrigeration &air conditioning in China and even the entire Asia-Pacific region. At the same time, the R&D center is also working closely with YORK international’s R&D division to develop money advanced products that can meet the global needs, In fact, innovation and renovation of many core technologies are happening in the Wuxi center.

2.   YORK SEVICES INTRODUCTION

York Air Conditioning & Refrigeration Service Centre was established in 1993 in Shanghai. The Service Centre is now having stations in Beijing, Nanjing, Guangzhou, Xiamen, Wuhan and Shenzhen, and service representatives in Shantou, Changsha, Chengdu, Jinan, Dalian, Harbin and Hangzhou, and so on. Using our established service center networks throughout China, we are able to provide full after-sales services to all our customers in China.

At the same time, the service center is having a bonded spare parts warehouse in Shanghai. The spare parts warehouse will serve the spare part needs for our customers with minimum delivery time.

展勤浩

HVAC&R Engineer

Refrigeration and Process Systems

工业制冷及气体压缩

China Refrigeration (York by Johnson Controls)

Mobile:+86 13818154378  18625150627

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