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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
Includes mandatory conversion labels to meet local mechanical codes and inspection requirements
Key Benefits for Contractors Direct OEM Compatibility: Specifically engineered for York HVAC systems to ensure the correct microamp signal to the ignition control board
Is an upstream regulator required
For technicians servicing Williams Direct Vent Furnaces or Williams Floor Furnaces
Lennox 51M87 Pressure Switch 320734-701 Includes mandatory conversion labels toThe 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
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