YORK® VRF Single Change-Over Box

4 and 8 ton 208/230V, 1 PH

The Change-over Box (COB) is engineered to be the workhorse in a heat recovery system as it redirects refrigerant vapor to the desired zone.  4 ton connects 1-7 indoor units and 8 ton connects 1-8 indoor units.
  • Built-in simplicity since vapor is switched instead of liquid, therefore no condensate is produced which means fewer valves are required. 
  • Four electronically controlled valves, and a fully insulated valve housing minimizes noise.
  • Increased reliability since fine mesh strainers protect the valves.
  • Low-noise valve operation means quieter operation and no need to place the changeover box in a remote location. 
  • Reliable performance because change-over box continually operates even if one indoor unit on a circuit malfunctions. The valves work according to the demand of each zone. 
  • Easy service access to valves with a simplified design.