Engineered for flexibility and performance™

Pathfinder® Air-Cooled Chiller

170 - 550 Tons

Daikin McQuay Pathfinder ChillerInnovation that Delivers SolutionsDaikin McQuay products offer industry leading results in quality, performance and sustainability. The Pathfinder Air-Cooled Chiller is the epitome of technology and innovation.

• Most efficient full load and part load operation

• Quietest sound levels published

• Largest capacity air-cooled screw chiller

• Performance that can contribute to multiple LEED® points

• D-Net® Performance Services option for enhanced reliability

• Small footprint to optimize space and reduce installation costs

• RapidRestore® and fast loading option for mission critical facilities

D-Net Performance Services

For Quicker Response and Enhanced SupportD-Net Performance Services is an advanced service support option available on all Pathfinder Chiller shipped in the U.S. and Canada that allows McQuay Service to remotely monitor your chiller for enhanced performance and troubleshooting. After this innovative, web-based service is enabled, D-Net provides a direct electronic link to your Pathfinder Chiller. Through this link McQuay Service can provide enhanced support, quicker response and lower service costs.

Solutions for Your Toughest HVAC Issues

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ad IP

LV E

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Standard High High with VFD Premium Premium with VFDStandard with VFD

14.714.714.014.0

Pathfinder Chiller Part Load Efficiency

ASHRAE Std. 90.1–2010, 12.75 EER

18.918.9

17.717.716.216.2

19.419.4

Three levels of efficiency – Standard, High and Premium. Optional variable frequency drives provide even more impressive cost savings at part load.

What Energy Cost Savings are Right for You?

Compact size for replacement projects – the length of our 300-ton unit is 9.7 feet less than another manufacturer’s 300-ton air-cooled screw chiller. And the Pathfinder Chiller still provides the same efficiency!

How Much Installation Costs Could You Save?

Quietest air-cooled screw chiller –The Pathfinder continues our legacy of air-cooled chillers with the quietest performance published – sound pressure levels as low as 66 dBA, with no attenuation. We’re so confident of our sound levels that we publish them. No one else does.

You Will Hear the Difference!

5’ 10’ 15’ 20’ 25’ 30’ 35’ 40’

9.7 Feet Less

Our 300-ton unit is 26.3 feet long

Another manufacturer’s 300-ton unit is 36 feet long

300-ton Unit Length Comparison

Daikin McQuay Pathfinder Chiller

1] Compressor Controls Uses precise control logic for excellent operating efficiencies at both full and part load.

2] Optimized Condenser Maximum heat transfer surface area resulting in a small unit footprint.

3] Evaporators Direct expansion, pure counter-flow for impressive heat exchanger effectiveness.

4] Economizer Optimizes refrigerant flow for maximum performance on High and Premium efficiency models, both without optional variable frequency drive.

5] Patented One-piece Molded Fan Blade Moves large quantities of air at exceptionally quiet levels. Composite material developed and tested for 10 years to resist UV light damage and corrosion.

6] Unique Single-rotor Screw Compressor Designed specifically to operate more quietly than dual screw compressors.

7] Easy Access Key components are conveniently located on the periphery of the unit: compressors, filter-driers, manual liquid-line shutoff valves.

8] Serviceability Enough headroom for a service person to stand up comfortably inside the unit.

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Interior View

Patented Condenser Fan Blade Design

Single Main Rotor - Dual Gaterotor Screw Compressor

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Pathfinder High Efficiency Unit with Optional VFD

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9] Multiple Compressors with Independent Circuits For efficient part load operation and unit redundancy.

10] Precise, Proactive Controls Adjust to changing operating conditions, keeping the unit safely online while delivering optimum efficiency. Unit controller is easy for operators to learn and use.

11] Wye-delta or Solid State Starters Both starter options are available offering smooth, stepless acceleration and deceleration to reduce electrical and mechanical stress, resulting in longer compressor and motor life.

12] Power Factor Correction Capacitor As a factory-installed option, power factor correction capacitors achieve a full load power factor of 0.95 for potentially lower utility bills due to the reduction or elimination of utility penalties for low power factor systems.

13] Expanded Electrical Voltages Ideal for new construction or retrofit projects; available at 60 Hz (208/230/380/460/575V).

14] Open Choices™ Feature For easy integration with your choice of building control system using BACnet®, LonTalk® or Modbus® protocols.

15] Variable Frequency Drive (VFD) Available as an option, offering industry-leading part load efficiency and reduced in-rush current.

16] RapidRestore® and Fast Loading The RapidRestore option allows a Pathfinder chiller to start as fast as 30 seconds after power is restored, following a temporary power loss. Fast Loading can restore full load cooling capacity in less than 5 minutes for select models.

17] Remote Evaporator Remote evaporator option for keeping all chilled water piping within a building.

Solve Your Biggest Power Loss Concerns

• Faster return to necessary cooling levels

• Keep heat-sensitive servers on-line

• Maintain patient comfort in critical care areas

• Eliminate downtime in manufacturing processes

Making Your Building More Sustainable

Innovation that Delivers SolutionsThe Pathfinder Chiller leads the industry in energy efficiency, quiet operation and responsible refrigerant management. For building owners who want to pursue Leadership in Energy and Environmental Design (LEED®) Green Building certification, the performance of the Pathfinder chiller can contribute to the following LEED points.

• EAc1 , Optimize Energy Efficiency 1 to 19 possible points

• EAc4, Enhanced Refrigerant Management 2 points

Pathfinder RapidRestore® and Fast Loading Option

Restore cooling and peace of mind in as fast as 30 secondsA power loss could turn into a critical loss of cooling in mission critical facilities such as data centers, health care buildings or manufacturing processes. A short-term power loss can happen during power interruptions, brown-outs or utility switching operations.

The Pathfinder Chiller is available with a RapidRestore optionthat allows it to start as fast as 30 seconds after power is restored.In addition, the Fast Loading option can restore full load coolingcapacity in less than 5 minutes. So your critical cooling is restoredbefore it’s missed.

Pathfinder Chillers

Other Air Cooled Screw Chillers

Fast Loading Timeline Comparison

Minutes required to reach 100% load capacity

Pathfinder chiller represented is a 2-circuit model unit with a wye-delta starter.

0 5 10

Fast Loading to 100% Cooling Capacity

Once power has been restored and the chiller is back online, the next critical step is reaching 100% cooling capacity as fast as possible. That’s when the Fast Loading ability of a Pathfinder chiller with RapidRestore proves its worth. With Fast Loading, the Pathfinder chiller can reach 100% cooling capacity in less than five minutes – while other comparable air cooled chillers need 5 to 10 minutes.

Which Pathfinder Chiller is Right for Your System?

StandardEfficiency

Standard Efficiencywith VFD

High Efficiency

High Efficiency with VFD

PremiumEfficiency

Premium Efficiency with VFD

Capacity (tons) 190 to 550 170 to 200 210 to 530 240 to 400

Sound pressure (dBA) without attenuation1

67 to 73 66 to 67 69 to 74 70 to 75 70 to 72 71 to 72

Power 60 Hz 60 Hz 60 Hz 60 Hz

Refrigerant R-134a R-134 R-134a R-134a

Part load (IPLV, EER) 13.2 to 14.0 17.3 to 17.7 14.0 to 14.7 18.0 to 18.9 15.9 to 16.2 18.8 to 19.4

Full load (EER) 9.6 to 10.1 9.9 to 10.4 10.3 to 10.9 9.6 to 10.2 11.4 to 12.2 11.0 to 11.8

Small unit footprint Best Best Best Better Better Good

First cost Best Good Better Good Better Good

Life cycle cost Good Best Better Better Best Best

Full load optimization Good Good Better Better Best Better

Part load optimization Good Best Better Best Better Best

Integration options BACnet®, LonWorks®, or Modbus® communications

1. per AHRI Standard 370

Applied Development Center The performance and reliability of the Pathfinder Chiller was tested and verified in the Daikin McQuay Applied Development Center in Minneapolis, MN USA. This $50 million, award-winning research and technology facility is proof of our commitment to continuous performance improvement and innovation.

The following are tradenames or registered trademarks of their respective companies: BACnet from ASHRAE; LEED from U.S. Green Building Council; Modbus from Schneider Electric; Destiny, D-Net, MicroTech, Open Choices, Pathfinder, RapidRestore, RoofPak, Skyline, and Vision from McQuay International. LONMARK, LonTalk and LONWORKS are man-aged, granted and used by LONMARK International under a license granted by Echelon Corporation.

©2012 McQuay InternationalA/SP 31-262 (07/12)

800.432.1342www.DaikinMcQuay.com

Make it a Complete System for Optimum System Performance and Reliability

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with VFD25 to 190-ton Scroll Chiller

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Choose a Daikin McQuay Air-Cooled Chiller

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