Lennox 51M87 Pressure Switch THPU32HP7Y 25-inch expanded discharge port reduces
Baker’s notes & crumb story
Description
25-inch expanded discharge port reduces backpressure during full-flow relief events
which is essential for maintaining system integrity in long-line sets and high-tonnage York equipment
This motor features a 5/16-inch diameter shaft that extends 2
Professional Grade Durability: Specifically built for the high-cycle environments of Lennox G24 and G26 furnace series vestibule panels
Drop-in Compatibility: Specifically engineered to replace legacy part number S1-331-02936-001 without requiring extensive field modifications
Lennox 51M87 Pressure Switch THPU32HP7Y 25-inch expanded discharge port reducesThe Lennox 51M87 is a precision engineered furnace pressure switch designed for critical venting safety within Lennox HVAC systems. This 1. 6" WC SPDT N. O. pressure switch functions as a fail safe, ensuring the inducer motor is generating adequate static pressure before allowing the ignition sequence to proceed. The 51M8701 is the identical direct replacement, maintaining the exact factory set point of 1. 60 inches of water column. As a Single Pole