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Innovative Technology, Inspired Teamwork

Daikin and McQuay have teamed their resources and their technologies to provide the most innovative products to our customers. Daikin McQuay products offer industry leading results in quality, performance and sustainability. The Pathfinder™ Air-Cooled Chiller is the epitome of that 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™ Remote Service option for enhanced reliability
• Small footprint to optimize space and reduce installation costs

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?

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 65 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!

Compact size for replacement projects -

The length of our 300-ton high efficiency unit is 12.7 feet less than a typical manufacturer’s 300-ton high efficiency air-cooled screw chiller. And the Pathfinder™ Chiller still provides the same efficiency!

How Much Installation Costs Could You Save?

Making your building

A GREENER PLACE

for working, learning and enjoying...

Contributing to LEED® Points
The 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.

• Energy and Atmosphere Credit 1,
  Optimize Energy Efficiency                   1 to 19 possible points
• Energy and Atmosphere Credit 4,
  Enhanced Refrigerant Management        2 points

Committed to Environmental Responsibility
McQuay air-cooled chillers have offered environmentally responsible refrigerants since 2002. The Daikin McQuay Pathfinder™ Chiller continues this legacy by operating with HFC-134a, a refrigerant with no ozone depletion potential and no phase-out schedule, making it the responsible choice for today and tomorrow.
For three years in a row Daikin has been named as one of the Global 100 Most Sustainable Corporations, a list compiled by Corporate Knights, Inc., and Innovest Strategic Value Advisors Inc., research firms specializing in analyzing non-traditional drivers of risk and shareholder value including companies’ performance on social, environmental and strategic governance issues. Daikin and McQuay are committed to designing the most energy efficient, sustainable products in the industry. Our goal is a continuous improvement in energy efficiency to reduce CO2 emissions from product usage.

Which Pathfinder™ Chiller is Right for Your Project?

Standard
Efficiency

High
Efficiency

High Efficiency
w/VFD

Premium
Efficiency

Premium
Efficiency
w/VFD

Capacity (tons)

175 to 530

210 to 530

210 to 350

Sound pressure (dba)
without attenuation

65 to 70

68 to 72

69 to 70

Power

60 Hz, 50 Hz

60 Hz, 50 Hz

60 Hz

Refrigerant

R-134a

R-134a

R-134a

Part load (IPLV, EER)

13.1 to 13.5

13.4 to 14.1

18.2 to 18.8

14.4 to 15.1

19.2 to 19.4

Full load (EER)

9.6 to 9.8

10.2 to 10.8

9.6 to 10.3

11.1 to 11.6

10.8 to 11.3

Small unit footprint

Best

Best

Better

Better

Good

First cost

Best

Better

Good

Better

Good

Life cycle cost

Good

Better

Better

Best

Best

Full load optimization

Good

Better

Better

Best

Better

Part load optimization

Good

Better

Best

Better

Best

Integration options

BACnet®, LonWorks®, or Modbus® communications

 
NEW! Pathfinder™ HV Unit with Optional VFD 175 - 530 Tons

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.

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

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 available with solid state starters offering smooth, stepless acceleration and deceleration to reduce electrical and mechanical stress, resulting in longer compressor and motor life.

12] Expanded Electrical Voltages
Ideal for new construction or retrofit projects; available at 60 Hz (208/230/380/460/575V) and 50 Hz (400V).

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

14] NEW! Variable Frequency Drive (VFD)
Available as an option on High and Premium efficiency models, offering industry-leading part load efficiency and reduced in-rush current.