If the outdoor coil is encased in thick ice or the system remains in defrost mode for more than 15 minutes

Quiet Operation: Precision-engineered sleeve bearings minimize vibration and mechanical noise within the blower housing

this is an auto-reset furnace switch

allowing it to handle higher flow rates (2

Maxitrol M651W-1 Valve THPU32HP7Y If the outdoor coil isThe Maxitrol M651W 1 is a high performance modulating gas valve engineered for atmospheric burners requiring higher outlet pressures. Featuring 1" NPT connections, this unit is rated for a maximum 1 2 PSI inlet pressure and provides a precise low fire adjustment range of 1. 2" to 2. 5" w. c. Designed for seamless integration into industrial and commercial heating systems, it utilizes covered wire terminals to ensure secure electrical connections in