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This heavy-duty furnace interlock switch is a critical safety component designed to instantly cut power to the blower motor and control board when the furnace access panel is removed
Unlike standard mechanical floats
often cross-referenced as Trane ACT00471
This kit is used in oil burner applications where consistent pilot flame is critical for reliable main burner ignition and safe combustion sequencing
Laars Heating Systems V0049900 Valve 323080-701 This heavy-duty furnace interlock switchThe Laars Heating Systems V0049900 Valve is a 1 inch, 24V combination natural gas control designed for high demand hydronic applications. This OEM Laars replacement part is engineered specifically for Mighty Therm boiler models, specifically the 325 400 series (including HH, PH, VW, and PW configurations). Operating with a 4" WC manifold pressure, this valve ensures precise fuel regulation and consistent ignition cycles in commercial and residential
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