Best Route to Real-world Energy Performance

Form

No.:

E-E2

3.CP.H

K(03

06)

Supe

rsede

s: E-

E23.C

P.HK(

0705

)

Centrifugal Chillers

0.60

0.55

0.50

0.45

0.40

0.35

0.30

Entering Condenser Water Temperature(F)

kW/to

n

0.25

0.20

0.15

85 80 75 70 65 60 55

CompetitiveChiller

60% Load100% Load

MAXE™ Chiller withOptiSpeed™

Drive

100% Load

60% Load

2

YORK® MAXE™ centrifugal chillers providethe best route to real-world energy performance — the combined performanceat all operating conditions, not just design.Because chillers in the real world operatenearly 99% of the time at off-design conditions, off-design performance is themajor factor in energy consumption.That’swhy MAXE centrifugal chillers are engineeredfor maximum efficiency at both design and off-design conditions.

The Air-conditioning and RefrigerationInstitute (ARI) Chiller Certification Programendorses the validity of off-design analysisto compare chiller energy consumption.Measured with ARI’s Integrated Part LoadValue (IPLV), MAXE centrifugal chillers are

unsurpassed in energy efficiency. Equippedwith a YORK OptiSpeed™

drive, they can reduce energy-usage ratiosto new lows: 0.40, 0.30, and even 0.20kW/TR at off-design conditions.

When a MAXE centrifugal chiller is equippedwith an OptiSpeed drive, it incorporates advanced Adaptive Capacity Control logic,which continually optimizes chiller operation.It closely examines critical operating parameters, and then determines the most efficient way to operate. In addition, it lets you optimize your savings whenusing intelligent control strategies, such as chilled-water reset. Adaptive CapacityControl logic also accommodates the characteristics of the refrigerant used in the chiller — today and tomorrow.

MAXE™ Chillers DeliverMaximum Efficiency

Unsurpassed in energyefficiency, MAXEcentrifugal chillers can reach 0.20 kw/TR at off-design conditions.

variable-speedThe Importance of Real-WorldEnergy Performance

Unsurpassed IntegratedPart Load Value

Adaptive Capacity ControlOptimizes Performance

Unlike competitive chillers which requireentering-condenser-water temperature(ECWT) from the cooling tower to be heldartificially high, YORK MAXE centrifugalchillers can utilize lower ECWT. The lowerECWT lowers the compressor workload,and that leads to dramatic energy savingsthroughout the chiller’s lifetime.

MAXE chillers feature the OptiView™

Control Center, which uses microprocessorcapabilities to save you energy. Operationat just 1°F below the design chilled-water-temperature setpoint can increase chillerenergy consumption by as much as 3%,wasting thousands of kilowatt-hours anddollars each year. The digital precision ofthe OptiView Control Center lets you setchilled-water temperature to a resolution of ± 0.1°F. As a result, you eliminate theenergy wasted by drifting a degree or more from the setpoint.

The OptiView Control Center can also be used to schedule daily operating hours and holidays. No longer is energy accidentally wasted cooling the facilitywhen it’s not needed.

The OptiView Control Center helps you operate your chiller more efficiently by allowing for theprecise setting of chilled-water temperature andoperating schedule.

Take Advantage of ColderEntering Condenser Water

Powerful Control CenterSaves Energy

3

Easy to Read

Easy to Operate

Get the Message —Quickly and Graphically

Advanced Data Logging

4

YORK has always pioneered powerful, yet simpler chiller control. We were thefirst to apply microprocessor-based, plain-language-display control centers to centrifugal chillers. Now, YORK MAXE centrifugal chillers feature the full-screen,full-color OptiView Control Center.

It’s an advanced, microprocessor controlcenter that sets the standard by presentingmore data in the friendliest way possible.You still get the code-free, plain-languagedata you’re accustomed to from a YORKmicroprocessor control center. But now it’s even easier to read, thanks to a large,full-color screen using advanced active-matrix display technology.

This larger display shows even more dataper screen with far less button-pushing.And that makes it much quicker and easierto operate your chiller. To facilitate a higherlevel of monitoring and control, data outputsare shown in association with illustrations

of the appropriate chiller components — a layout that minimizes user confusion. For convenience, all data can be displayedin nine different languages, in addition to Imperial or SI units.

With the OptiView Control Center, datainput is foolproof. A dedicated keypad for numerical input minimizes keystrokeerrors. Cursor controls for screen navigation make it easy to access all input, control, and monitoring functions.Plus, a “navigation bar” quickly guides you to the level of information you need.

Thanks to the large, active-matrix screen,detailed logs can be read directly from theOptiView Control Center. Instead of key-stroke after keystroke to gather sufficientdata from a small, monochrome LCDscreen, a single button can reveal an arrayof chiller information that is quickly seen on a single screen. Data output is providedin precise, digital form. Valuable operatortime is freed for other important activities.

For convenience, a printer can easily beconnected to the OptiView Control Centerwithout interfacing through a BAS system.A printed log can be obtained automatically,at predetermined time intervals, withoutoperator involvement. In addition, servicetechnicians can use a portable printer todownload information for troubleshootingand repair. All this can also be done whileconnected to a BAS system.

Maximum Control withOptiView™ Control Center

On-Screen Trend Analysis

Easy to Integrate

Easy to Secure

The OptiView Control Center’s full-screen,full-color display allows on-board trendingof up to six different values, selected fromover 100 items. The values and samplinginterval are all user-selectable. This flexibilityallows operators to select parameters that are critical for their operation, and do trending without a BAS interface andseparate monitor.

Energy savings and ease-of-use can be fully realized when the HVAC system is an integrated part of the BAS system. The OptiView Control Center is designed to communicate with most existing controlsystems on the market today, as well asBACnet and LonMark systems.

You can rest assured that along with state-of-the-art control, the OptiViewControl Center provides advanced levels of security. Setpoints are protected by a user-selectable security access code. A “Remote” mode allows a BAS to imple-ment sophisticated control strategies as a first priority. A “Local” mode provides full control at the control center. “Operator”mode opens control software to your commands. And “Service” mode givesqualified service personnel exclusiveaccess to special functions.

These sample screensdemonstrate how easy

it is to access and view more useable data. They are typical of

the over 35 screensavailable on the

OptiView Control Center.

5

Environmental Responsibility

Energy-Source Choice

Handles Pressure Jobs

Versatile Design ProvidesMaximum Flexibility

The YORK MAXE line of centrifugal chillers offers the broadest range of energysources and compressor configurations in the industry. And that versatility givesyou the flexibility to meet virtually anyapplication need you may encounter.

In answer to environmental and refrigerantphase-out concerns, MaxE chillers arecharged with HFC-134a refrigerant, which has zero ozone-depletion and no phase-out schedule.

In addition, MAXE centrifugal chillers’compatibility with future refrigerants isassured. That’s because YORK uses anopen-drive design that is proven to allowquick and economical changeovers to alternative refrigerants.

In addition to high-efficiency electric-drivemotors, the MAXE chiller line is also available with a natural-gas-engine driveline to tap the inherent environmental,energy, and cost benefits of this alternateresource. Process or utility-supplied steamis another possible power source, freeingyou from the electric grid. With so manyenergy alternatives to choose from, youcan make the most of utility rebates anddemand-side-management strategies tosave even more money.

Certain jobs require chillers to operatebeyond the limits found in typical air-conditioning applications. In these cases,the compressor must develop higher differential pressure on the refrigerant gas in the compression phase, producinghigher head pressure. YORK meets thischallenge with a compound-compressordesign that handles brine chilling, heatpump applications, and other unusuallydemanding applications.

The versatile MaxE family of chillers providesflexibility in compressor configurations and energy sources, to satisfy unique applications and take advantage of available energy sources.

6

OptiView Control CenterKeeps You Well-Informed

Open Drive is Reliableand Easy to Maintain

Electrical ProtectionExtends Motor Life

7

The OptiView Control Center providescomplete information on your chiller’s operating condition. Safety-shutdown information includes day, time, cause ofshutdown and type of restart required.Color-coding of fault messages allowseasy determination of chiller status. Yellowmessages are shutdowns with automaticrestart, requiring no operator intervention.Red messages are displayed for shut-downs requiring manual restart, alertingthe operator that a system check may be required.

The Trending Screen can show changes inmotor current, oil temperature and pressure,refrigerant pressures, or water temperatures,all of which can be valuable indicators ofdeveloping problems. This capability givesyou ample time to take corrective measuresbefore any expensive downtime is incurred.With the OptiView Control Center, you cansee when to schedule routine maintenancein advance of actual need.

The hallmark of a YORK centrifugal chilleris the open-drive design — a proven configuration that continues on MAXE centrifugal chillers. Why? One of the reasonsis that a motor burnout is no longer a catastrophic failure. While motor burnoutsare infrequent events, it only makes senseto utilize a chiller design that minimizes the resulting downtime. With an open-drivedesign, a burnout only affects the air-

Maximum Reliability withMinimum Maintenance

cooled motor. The rest of the chiller is notcontaminated with products of combustion.

The motor is easy to remove, and can be repaired at a local motor shop. As aresult, downtime due to motor burnout isdramatically reduced.

Equipped with an OptiSpeed drive, theMAXE chiller starts “softly,” never letting the inrush current exceed 100% of the full-load amps. By limiting the inrush, the motor windings do not rub togetherwith expansion, which extends the life of the insulation, contributing to longermotor life and less chiller downtime. Lower inrush also reduces torque stresseson the motor and compressor driveline.

Color-coded faultmessages allow earlydetermination of chillerstatus and requiredoperator action.

YORK’s Commitment - Superior Quality • Excellent Service • Distinctive Technology

Asia Pacific Headquarters 1 Genting Lane, #03-00 Kenwood Building, Singapore 349544 Tel: +65 6748 0202 Fax: +65 6743 4420

Greater China Headquarters 15/F, Telecom Tower, Whart T & T Square, 123 Hoi Bun Rd, Kwun Tong, Kowloon, Hong Kong Tel: +852 2331 9286 Fax: +852 2331 9840

YORK, a Johnson Controls Company, is a leading global provider of

heating, ventilation, air conditioning, and refrigeration (HVAC&R)

products and services.

Our wide breadth of product lines range from small residential room air

conditioners to the largest chillers used to cool the tallest buildings,

provide life support systems in the deepest diving ocean submarines,

and enable critical process cooling in the petrochemical, pharmaceutical

and microelectronics industries of the world.

YORK has been chosen by world-renowned organizations including the

US Capitol, the Kremlin, the Sydney Opera House, the Trans-Channel

Eurotunnel, the National Theatre of China, the Grand Palace of Thailand,

the Hong Kong Convention & Exhibition Centre, the Kuala Lumpur City

Centre and Taipei 101, the world's tallest building.

AustraliaTel: +61 (7) 3391 4772 Fax: +61 (7) 3391 4704

China (Shanghai) Tel: +86 (21) 6276 6509Fax: +86 (21) 6277 3543

Hong Kong Tel: +852 2331 9286Fax: +852 2331 9840

India Tel: +91 (22) 3088 1455Fax: +91 (22) 3088 1534

Indonesia Tel: +62 (21) 626 3535 Fax: +62 (21) 659 8875

Japan Tel: +81 (0) 78 991 6885 Fax: +81 (0) 78 991 6889

KoreaTel: +82 (2) 548 2114 Fax: +82 (2) 548 3222

New Zealand Tel: +64 (9) 444 6434 Fax: +64 (9) 444 2092

Philippines Tel: +63 (2) 830 0291 Fax: +63 (2) 812 0928

Singapore Tel: +65 6284 5722 Fax: +65 6283 3015

Taiwan Tel: +886 (2) 2599 2255Fax: +886 (2) 2599 3377

Thailand Tel: +66 (2) 721 0500 Fax: +66 (2) 721 1590

VietnamTel: +84 (8) 930 2820 Fax: +84 (8) 930 2822

Form

No.

: E-E

23.C

P.H

K(03

06)

Supe

rsed

es: E

-E23

.CP.

HK(

0705

)