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Variable Mass Flow (VMF)
FOR COMMERCIAL & INDUSTRIAL SYSTEMS
Product Overview
Variable Mass Flow (VMF) is a patented HVACR retrofit that converts fixed-speed compressors into variable-capacity systems. A pre-wired, pre-programmed drive and smart control package installs ahead of the existing compressor and matches refrigerant mass flow to the real-time load, cutting compressor energy use by up to 45%, without opening the refrigerant circuit or replacing existing controls.
Benefits Included
• Patented technology that turns fixed-speed compressors into variable capacity
• Compressor energy savings of up to 45%
• Plug-and-play and pre-programmed; the refrigerant circuit is never opened
• Existing controls stay in charge of the system
• Works with scroll, screw and semi-hermetic compressors and any refrigerant
• Sizes from 5 HP to 400 HP
• Refrigeration racks, walk-ins, rooftop units, DX splits, chillers and heat pumps
• Reduces short-cycling and temperature overshoot
Authorized Manufacturers
Available Models
Standard VMF
Outdoor-rated package for mid-to-large commercial and industrial refrigeration and HVAC systems.
• 30 to 100 HP at 230 V
• 30 to 400 HP at 460 V
• Wall, rooftop or pad mounting
• Scroll, screw and semi-hermetic compressors
Micro VMF
Compact VMF for walk-in condensing units, rooftop units and small commercial systems.
• 5 to 20 HP at 230 V
• 5 to 30 HP at 460 V
• Outdoor rated, UL listed and CE certified
• Works with existing controls
VMF for Supermarket Racks & Cold Storage
Variable capacity for parallel racks, single-compressor systems and cold storage.
• Parallel racks and single-compressor systems
• Supermarkets, cold storage and ice rinks
• Refrigerant circuit is never opened
• Can also drive fan motors
VMF for HVAC, Chillers & Heat Pumps
Adds variable capacity to rooftop units, DX splits, air-cooled chillers and heat pumps.
• Rooftop units and DX split systems
• Air-cooled chillers and heat pumps
• Adjusts to ambient and setpoint changes
• Three-phase fixed-speed compressors
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