Intutive installer setup. Easy-to-follow, digital display uses real language to guide installer through four easy steps.
Standardized checkout procedure...insures all installers check the same way and all zones function correctly before the installer leaves In addition the HZ432 offers dual fuel changeover based on outdoor temperature and/or thermostat staging, controls one extra zone and is expandable to 32 zones using TAZ4 Kits (K suffix) include transformer and C7735A discharge air temperature sensor