What is the proper installation orientation for this drier

This black plastic cooling fan blade is a genuine OEM replacement part designed to dissipate heat from the inducer motor shaft

ensuring consistent performance for professional contractors

which is the standard capacity for most residential and light commercial HVAC control circuits

ensuring consistent operational safety

Lennox 34M77 Pressure Switch Els PW 17895 What is the proper installationEnsure reliable sequence of operation with the Lennox 34M77 Pressure Switch, a critical safety component designed for heating and cooling systems. This OEM Lennox furnace pressure switch is engineered to monitor draft pressure and confirm proper inducer motor performance before allowing the ignition process to begin. Featuring a precise 1. 00"wc SPST (Single Pole Single Throw) configuration, this switch actuates at 1. 00" W. C. and resets at 1. 15" W.