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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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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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Destiny™ Indoor Air Handler 600 to 15,000 cfm
Unit Ventilators 750 to 2,000 cfm
Skyline™, Skyline™ Plus Air Handler 900 to 65,000 cfm
RoofPak™ Outdoor Air Handler 4000 to 50,000 cfm
Vision™, Vision™ Plus Air Handler 900 to 100,000 cfm
190 to 550-ton Pathfinder Chiller170 to 530-ton Pathfinder Chiller
with VFD25 to 190-ton Scroll Chiller
Choose a Daikin McQuay Air Handler or Terminal Unit
Choose a Daikin McQuay Air-Cooled Chiller
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