Key Benefits: Precise OEM Fit: Guaranteed compatibility with the Johnson Controls T-4000 series vertical pneumatic thermostats
contractors can restore original system efficiency while replacing deprecated part numbers S1-024-26003-000 and S1-024-25110-000 without the need for mounting modifications or bracket fabrication
The York S1-028-13379-000 is an OEM 1-groove fixed sheave engineered for precise power transmission in commercial and residential HVAC blower assemblies
which typically includes the integrated relays and diagnostic indicators necessary for fire-testing and operation
Key Benefits Precise Voltage Regulation: Converts standard 120V line voltage to stable 24V AC
Resideo AT87A1155 Transformer 320788-702 Key Benefits: Precise OEM Fit:Upgrade your industrial or commercial HVAC control systems with the Resideo AT87A1155 Transformer. Designed for high voltage environments, this 480V to 24V step down transformer provides a reliable 48VA power supply to run air conditioning circuits, 24V thermostats, and building automation controllers. As a NEMA Type E transformer, it features built in energy limiting overload protection per NEC Class 2 standards, ensuring your low voltage components
