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Broad Application Range: Replaces multiple legacy part numbers including LB-74940A and 52W2901 across Lennox
Without a secure plug
the door prevents accidental setting changes and protects the control interface from moisture and dust
Installation provides reliable cycling and helps resolve common ignition sequence interruptions caused by faulty or drifting thermal sensors
and Keeprite gas-fired equipment
Aaon V71750 Relay Broad Application Range: Replaces multipleThe Aaon V71750 Relay is a heavy duty Single Pole Double Throw (SPDT) relay designed for high cycle performance in precision HVAC environments. Engineered as an authentic Aaon replacement part, this 24V control relay facilitates reliable switching for fan motors, dampers, and heating elements within commercial air handling units. Its SPDT configuration allows for versatile normally open (NO) and normally closed (NC) operational logic, making it
