Highly Dependable
 •Four compressors, two refrigeration circuits 
•Combine up to eight modules to create a chiller array up to 1,320 tons 
• Also available as DHRC chillers using R-134a refrigerant for hot water up to 180 F Multiple independent systems for redundancy Simple To Operate 
•Semi-graphical LCD screen displays information 
•Simple keypad provides control of unit operations Easy To Install
 • Modules interconnect using conduit and a Hoffman J-Box easily and quickly
 • All refrigeration systems are factory charged and run tested Programmable Logic Controller (PLC) System
 •Comprehensive computer monitoring
 • Automatic diagnostic recording of fault conditions 
• Rotates lead compressor every 24 hours 
• Manual switch allows redundancy control as each module has a processor allowing it to run even if master controller fails 
• Optional Fail-To-Run software 
• Display at each module; remote display optional Total Access™ Configuration 
• Heat exchangers located for easy service or replacement 
• Ability to replace heat exchangers with other modules running makes Total Access ideal for mission-critical applications Design Flexibility 
•Wide array of module combinations available 
• Install only the capacity required as needed, when needed Simple To Service
 •Service can often be performed on a convenient, non-emergency basis 
• Most components are standard, off the shelf design AHRI Certified
 • All Multistack certifiable production modules are AHRI Certified providing performance assurance when comparisons are done in that category. Environmental Focus 
• Refrigerant R-410A is widely available, safe, and environmentally friendly refrigerants. R-134a is also available for heat recovery applications making hot water up to 180°F. 
• In addition to delivering reliable comfort and low operating cost, Multistack products can reduce environmental footprint.