Mode Selection Boxes

The mode selection box is key to the Varix system’s zoning and heat recovery. By routing either liquid or discharge gas to each indoor unit, it allows independent heating and cooling in each unit.

Liquid, suction and hot-gas refrigerant piping connects the mode selection box to the outdoor/source unit. The proper refrigerant phases are then routed to each individual set of indoor unit refrigerant ports, allowing each indoor unit to operate in heating or cooling mode independently.

Mode selection boxes are available in 1- to 12-port options, for connecting up to 64 indoor units to a single box.