The York S1-7681-3301 is a professional-grade HVAC rocker switch engineered to restore precise circuit control in a wide range of York heating and cooling systems

a flickering status LED

closed supply vents

Dual-Function Sensing: Consolidates relative humidity and temperature monitoring into a single housing

this specific model is configured for 12VDC operation

Utica-Dunkirk 240004794 Gas Valve 319852-301 The York S1-7681-3301 is aThe Utica Dunkirk 240004794 Gas Valve is an OEM standard replacement Honeywell VK8115F1134U gas control designed specifically for high efficiency hydronic boiler systems and atmospheric furnaces. Engineered as a Combined Valve and Ignition (CVI) system, this component integrates both the gas regulation and ignition control interface into a single, compact block. It features a 24V, 50 60Hz operation with a fast opening delivery mechanism to ensure