The SC-Z20 is a commercial zone control system that allows a single HVAC unit to have up to 20 individual zones. Each zone is controlled by its own space thermostat and a modulating zone damper or diffuser. The SC-Z20 works with single-stage, multi-stage, or heat pump systems and has an auxiliary heat control option for each zone. The SC-Z20 is an affordable alternative to higher cost VAV systems and there is no programming required.
Click here to read more about the SC-Z20.
Read additional documentation on the zoning system here.
Check out this video about modulating zone control systems.