The York S1-025-22220-000 Terminal Block is a critical electrical interface designed for high-reliability wire management within HVACR systems

this specific model is optimized for medium and high evaporating temperatures

providing the exact pin-outs and logic for non-communicating 2-stage heating and cooling applications

the McDonnell & Miller 194-B acts as a combination controller

York S1-4101-00 Valve 318973-401 The York S1-025-22220-000 Terminal BlockThe York S1 4101 00 Valve is a direct acting solenoid valve engineered specifically for high pressure demand in R410A systems. This E2S120 HP solenoid valve features a 1 4" sweat (ODF) connection and is designed as a normally closed (NC) component, ensuring precise refrigerant flow control during equipment cycling. Built to meet rigorous OEM standards, this refrigerant solenoid valve provides the necessary durability to handle the increased operating