Key Features and Benefits
Guaranteed to fit in your building, no matter the size
• Measures up to 26 building zones differential pressure sensor values, comparing them to individual setpoints
• Calculates main control loop setpoint from the largest deviation between actual and setpoint values
• Can control system bypass valve to ensure operating chillers minimum flow requirements are met
Maximize building comfort and efficiency
• Easy configuration of cut-in/cut-out speeds for individual pumps using application-optimized software
• Automatic cascade control ensures the highest possible system energy efficiency
• Regulates the variable-speed pumps and controls the bypass valve based on building demand
Easy commissioning and reliable operation
• Self-configuration option using Autotune — calculates the optimal control loop settings and reliably run the chilled-water system
• Protects chillers from freezing in low demand situations by adjusting bypass valve to ensuring consistent operation
Flexible remote access and monitoring
• Optional: BMS integration and monitoring via standard protocols (e.g., BACnet IP and Modbus TCP)
• Optional: Grundfos Remote Management system (GRM) integration
Four standard variants offer up to:
1. Four Grundfos E-pumps or CUE frequency converter / Four chiller signals
2. Four ext. variable frequency drives (0–10 V control / 4–20 mA power feedback) / Four chiller signals
3. Eight Grundfos E-pumps or CUE frequency converter / Eight chiller signals
4. Eight ext. variable frequency drives (0–10 V control / 4–20 mA power feedback) / Eight chiller signals
Optional bypass valve control available with all
HOW DOES IT WORK?
SYSTEM OVERVIEW – VARIABLE PRIMARY FLOW
SYSTEM OVERVIEW – PRIMARY/SECONDARY
