Lennox 26W85 Pressure Switch R-407C and V5863 series valves for

and V5863 series valves for diverse terminal unit applications

Can this be used for water pressure relief

Smith commercial water heaters and hydronic boilers

Drop-in Compatibility: Verified engineering as the official upgrade path for obsolete TEC2256H-4 units

Superior Thermal Durability: Features a high-grade ceramic body to withstand extreme furnace cabinet temperatures without electrical failure

Lennox 26W85 Pressure Switch R-407C and V5863 series valves forMaintain precise combustion control with the Lennox 26W85 Pressure Switch, an essential dual stage pressure switch designed for Lennox G61 furnace series and high efficiency HVAC platforms. This OEM Lennox replacement part (part number 101021 09) features factory calibrated set points of 0. 90" W. C. for low fire and 1. 30" W. C. for high fire stages. As a 2 stage pressure switch with SPST electrical configuration, it monitors the inducer motor's