allowing contractors to restore factory-spec regulation without replacing the entire housing

When performing HVAC safety switch replacement

Precision Insulation: Glazed ceramic base prevents high-voltage leakage

ensuring a leak-free path to your differential pressure transmitter or switch

Always use a calibrated manometer at the 1/8" NPT pressure tap on the regulator's outlet side while the burners are firing to confirm the 15-30" W

York S1-025-27747-002 Temp Control allowing contractors to restore factory-specThe York S1 025 27747 002 serves as a high integrity safety component engineered for precise thermal regulation within furnace and air handler assemblies. This manual reset high limit switch is factory calibrated to open at 200 degrees Fahrenheit, functioning as a primary fail safe to interrupt the burner circuit or unit operation if internal temperatures exceed engineered safety thresholds. As a critical HVAC safety control, it prevents heat