Velocity Boiler Works (Crown) 3503025 Relay L99H008 Maintenance-Free Design: Double EPDM O-rings

Maintenance-Free Design: Double EPDM O-rings and a fiberglass-reinforced Teflon seat ensure a bubble-tight shutoff without the need for periodic packing adjustments

the York S1-031-02993-000 is an integrated gas/electric control board designed to manage the sequencing for both fuel types in hybrid or package unit configurations

ensuring efficient oil return to the compressor

This assembly is standard for several York air handler and furnace configurations that utilize a 10x10 or 11x10 wheel depending on the specific tonnage rating

A "dry" reading confirms the filter drier is functioning correctly

Velocity Boiler Works (Crown) 3503025 Relay L99H008 Maintenance-Free Design: Double EPDM O-ringsThe Velocity Boiler Works (Crown) 3503025 Relay is a high duty 120V combination relay engineered for precise circuit management in residential and commercial hydronic systems. As a critical boiler replacement part, this component integrates multiple switching functions into a single housing, streamlining the 120VAC electrical path for burners, pumps, and limit controls. Designed specifically for Crown boiler systems, it ensures 60Hz current stability