TrueZONETM Panels Part Number Description HZ432 HZ322 HZ311 HZ432K HZ322K HZ311K Four zone, 3H/2C panel used for conventional, heat pump or dual fuel systems Three zone, 2H/2C panel used for conventional or heat pump equipment Three zone, 1H/1C panel used for conventional equipment Includes (1) HZ432 Panel, (1) Transformer and (1) C7735A discharge air temperature sensor Includes (1) HZ322 Panel, (1) Transformer and (1) C7735A discharge air temperature sensor Includes (1) HZ311 Panel, (1) Transformer and