york® yvwa variable-speed, water-cooled, screw chillers

Infinite chiller configurations to help you achieve your goals

ConfidenceConfidence

FlexibilityFlexibility

SustainabilitySustainability

EfficiencyEfficiency

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When electricity prices escalated, Johnson Controls pioneered enhanced tubes for our YORK chillers.

The YVWA chiller addresses four primary requirements — efficiency, application flexibility, sustainability, and confidence.

Continuing a history of engineering innovations that meet your requirements

Building requirements are constantly evolving.

To keep you ahead of the curve, Johnson Controls

has developed numerous technological innovations

for our YORK® chillers. When some refrigerants

were identified as ozone depleters, we adapted

our chillers to use compounds that are friendly to

the environment. When electricity prices began

to escalate, we developed enhanced tubes and

variable-speed drives that slashed energy use.

And when the industry was looking for ways

to recover energy, we developed a full line of

heat-recovery chillers.

To help you meet today’s challenges, Johnson

Controls designed the YORK YVWA chiller.

This cutting-edge design uses a number of

engineering advances to address four primary

requirements of building owners and designers —

efficiency, application flexibility, sustainability,

and confidence.

YORK® YVWA variable-speed, water-cooled, screw chillers

Confidence

Flexibility

25%lower energy costs

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The YVWA chiller delivers superior energy performance at all operating hours.

An investment in an optimized YVWA chiller reduces energy costs by 25%.

EFFIcIEn

cY

Finding the right balance between a chiller’s

capital cost and its cost of ownership can be a

challenge. But Johnson Controls makes it easy.

By making variable-speed technology standard

on every YORK YVWA chiller, Johnson Controls

delivers high energy performance and low

ownership cost. The base model YVWA chiller

is more efficient than the most efficient

competitive chiller.

There is a simple reason for this phenomenon.

In most places in the world, the variable-speed

YVWA chiller saves energy during 97% of

operating hours spent at off-design conditions,

which include reduced load and/or reduced

entering condenser-water temperature.

In addition, you can specify that your YVWA

chiller be built with optimized performance,

which can deliver a European Seasonal Energy

Efficiency Ratio (ESEER) that is as much as

25% better than ordinary chillers.

The bottom line: the YVWA chiller makes it

easy to balance capital cost and ownership cost.

Reduce compressor speed. Increase energy savings.

YVWA Efficiency vs. Ordinary Chiller

Ordinary ChillerYVWA Chiller

0

5

10

15

Chi

ller

Effici

ency

(EE

R)

3

4

5

6

7

8

9

10

Chiller Load (%)

ECWT (°C)

ECWT = Entering Condenser Water Temperature

10 20 3040

5060

7080

90100

15.6 17.2 18.820.4

22.023.6

25.226.8

28.430.0

Ann

ual H

ours

(%

)YVWA Energy Cost vs. Ordinary Chiller

1 2 3 4 5 67

89

10Years

-

50,000

100 ,000

150,000

200,000

250,000

YVWA Chiller

Ordinary Chiller

Note: 3,500 operating hours, 0.10 EUR/kWh energy rate, 800 kW design cooling load

25%

1perfect match to meet your unique needs

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FlExIb

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The YVWA chiller can also efficiently handle the high condenser pressure required for dry cooling.(Photos courtesy of Baltimore Air Coil)

The YVWA chiller can efficiently handle the low evaporator pressure required for ice thermal storage.

Many applications. One chiller.

Like all screw chillers, the YVWA chiller is capable

of handling higher pressure lift than a centrifugal

chiller. As a result, a thermal-storage application

that requires glycol to be chilled to -10°C(*), or

a heat recovery or heat-pump application that

requires water to be heated to 65°C(*), are within

the capabilities of the YVWA chiller.

However, unlike ordinary screw chillers, the

YVWA chiller has the flexibility to handle these

high-lift applications with the highest efficiencies

available. The difference is its variable-speed drive

which constantly tunes the compressor speed to

the exact lift and load requirements.

The remarkable flexibility offered by the variable-

speed technology also allows the YVWA chiller to

utilize a wide range of heat-rejection methods: in

addition to an open cooling tower, you can also

use a closed-circuit cooling tower, a dry cooler,

or an adiabatic cooler, all with the peace of mind

that the YVWA chiller is giving you the highest

efficiency possible.

(*) Min/Max temperatures may change depending on the model configuration selected.

25%smaller CO2 footprint

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Reduce direct emissions with the YVWA’s falling-film evaporator, which reduces refrigerant charges by up to 30%.(Photo courtesy of the LTCM lab of the Ecole Polytechnique Fédérale de Lausanne, Switzerland)

The efficiency of the YVWA chiller can reduce your environmental footprint. Less electricity has to be generated, which means greenhouse-gas emissions created by the power plant are reduced by as much as 25%.

Reach greener goals. Start with a smaller footprint.

Why should you pay an economic penalty for

being environmentally friendly? Unlike competitive

chillers, the YVWA chiller does not make you choose

between saving money and saving the environment.

The YVWA chiller reduces environmental impact

in two ways: directly, by managing refrigerant

charges and the potential refrigerant leak points; and

indirectly, by minimizing power-plant CO2 emissions,

which are responsible for 98% of the Global Warming

Potential associated with chillers.

To reduce the direct effect, the YVWA chiller uses

HFC-134a refrigerant, which has no ozone-depletion

potential and no phase-out date. We also reduced

the number of fitting, joints, and other potential leak

points by 35% compared to conventional compressor

designs. Plus, our proprietary falling-film evaporator

design allows refrigerant charge to be reduced by as

much as 30% compared to conventional designs.

The indirect effect is addressed through the superior

energy performance of the YVWA chiller, which cuts

the energy that the power plant needs to produce

and reduces emissions by as much as 25%.

Finally, the YVWA chiller makes it easy for you to

earn points in the LEED® and BREEAM® green-

building certification programs.

25%

20,000years of cumulative worldwide experience

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> 175,00035,000–175,00018,000–35,0004,000–18,000

Our 15,000+ service technicians in 150 countries provide chiller expertise to keep your facility running smoothly.

YORK variable-speed, air-cooled screw chillers in use, by cumulative capacity (kW).

You can be sure you are making the right choice

when you select the YVWA chiller. Our experience

is unsurpassed. Johnson Controls invented

variable-speed-drive technology for water-cooled

chillers in 1979.

We also introduced the industry’s first variable-

speed, air-cooled, screw chiller in 2004. By 2010,

our installed base exceeded 7,000,000 kW

(2,000,000 TR) in over 100 countries. With all

units combined, we have more than 20,000 years

of field experience. The YVWA chiller uses the

same variable-speed compressor, so you can trust the

chiller will perform as expected in your application.

We also offer the proven support of the world’s

largest service organization. Johnson Controls

employs over 15,000 technicians in over 150

countries, bringing decades of variable-speed

chiller experience to your door.

Nobody can tailor and tune a variable-speed,

water-cooled, screw chiller to match the

unique requirements of your application better

than Johnson Controls.

co

nFId

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Capable hands. World-class partner.20,000

700 5.39 7.64 98 4268 1405 1849 5957 245

800 5.81 8.28 97 4268 1405 1849 6336 245

900 5.70 8.39 100 4268 1405 1849 6412 245

1000 5.46 7.90 97 4268 1405 1849 6260 255

© Johnson Controls, 2011 PUBL-6881

Johnson Controls Inc, Building Efficiency, De Kleetlaan 3, Diegem Zuid - Pegasus Park, Brussels, Belgium B-1831.

Johnson Controls reserve the right, in line with continuing research and development, to amend or change specifications without notice.

Cooli

ng C

apac

ity [k

W]1

EER

100%

2

ESEE

R3

Leng

th [m

m]

Soun

d Po

wer [d

BA]

Width

[mm]

Height

[mm]

Opera

ting W

eight

[kg]

Refri

gera

nt C

harg

e [kg]

1: Cooling Capacity at Eurovent Conditions, entering/leaving chilled water temperature 12°C/7°C, ambient temperature 35°C

2: Energy Efficiency Ratio

3: European Seasonal Energy Efficiency Ratio

Technical specificationsThe YVWA chiller offers an infinite number of configurations by allowing you to mix and match from an abundance of heat exchangers and compressor sizes and speeds. This extreme flexibility allows you to pick the optimum chiller for your application without compromise. The following table shows a sample of typical YVWA chillers at standard capacity points to serve as a quick reference guide.