York S1-THPU433-S Thermostat Els PW 17895 In the Maxitrol system

In the Maxitrol system

The automatic ball checks are safety features designed to seat against the orifice if the glass breaks

Is special tooling required for installation

and 208-277V coil inputs

Snap-Action SPDT Switch: Provides crisp contact engagement to prevent arcing and ensure long-term electrical reliability

York S1-THPU433-S Thermostat Els PW 17895 In the Maxitrol systemThe York S1 THPU433 S is a high resolution, 7 day programmable thermostat engineered for precise climate control in advanced 24V residential and commercial HVAC applications. Supporting 3 stages of heating and 2 stages of cooling (3H 2C), this unit provides the multi stage logic required for heat pumps and multi speed systems. It serves as the direct OEM replacement for the S1 TRPU32P7HW S and is backward compatible with several legacy York