as the York S1-4101500 comes with pre-terminated connectors

Check for 24VAC at the main control board first

OEM Compatibility: Replaces 033199-0849

It is recommended for any steam equipment under modulated control where a vacuum can form

For technicians seeking a robust boiler temperature switch that integrates seamlessly with existing wiring harnesses and 24V control circuits

York S1-LAPS120A Bulb 328140-751 as the York S1-4101500 comesIntegrate professional grade UV sterilization into your air handling system with the York S1 LAPS120A Bulb with integrated power supply. Designed specifically for HVACR applications, this 115V germicidal UVC replacement lamp is engineered to neutralize airborne pathogens and prevent biofilm accumulation on evaporator coils. Utilizing short wave ultraviolet C frequency, the S1 LAPS120A effectively eradicates mold spores, bacteria, and viruses,