York S1-THEC11P5S Thermostat Freon As an essential metering device

As an essential metering device

it serves as a drop-in replacement for numerous legacy furnace and AC models

Direct OEM Compatibility: Specifically engineered for Reznor UDAP-100 unit heaters to maintain factory-spec airflow and static pressure

Direct Interchangeability: Engineered as the exact Fasco D564 replacement to eliminate field retrofitting time

7 µA is required for the control to maintain the gas valve circuit

York S1-THEC11P5S Thermostat Freon As an essential metering deviceThe York S1 THEC11P5S Thermostat is a professional grade 7 day programmable thermostat engineered for single stage heat and cool (1H 1C) applications. Specifically optimized for heat pump systems without auxiliary heat, this unit ensures precise setpoint management and HVAC energy efficiency. As a direct replacement for model THEC11P5S, it features auto manual system switching and dual power options (24VAC hardwired or battery powered) to accommodate