as well as standard hot water hydronic loops

including Arcoaire

Can this replace older 221455A/U models

including the high-capacity D112

York S1-024-36138-000 Relay as well as standard hotThe York S1 024 36138 000 Relay is a heavy duty 24V 60HZ DPST NO Relay designed for critical switching applications in residential and light commercial HVACR systems. This Double Pole Single Throw component features Normally Open contacts, allowing for the simultaneous control of two independent circuits from a single 24 volt coil signal. Engineered as a high performance HVAC control relay, it is commonly utilized for managing high draw loads such as