Lennox 16D74 Relay 320788-703 The suction side uses a

The suction side uses a 1-1/4" Rotolock nut with a 5/8" ODF sleeve

Common indicators include intermittent power failure to the blower motor

Integrating this OEM Carrier burner ensures the unit maintains its original AFUE rating while providing reliable ignition sequences and stable flame rectification when paired with the correct flame sensor and igniter setup

ensuring that multiple belts on a single drive meet tolerances tighter than RMA standards

Lennox 16D74 Relay 320788-703 The suction side uses aThe Lennox 16D74 Time Delay Relay is a critical solid state control designed for precise timing in residential and commercial air handling units. As a veteran grade HVAC replacement part, this 24V time delay relay (model 105241 01) functions as a dual action timer, providing a fixed 1 second delay on make (ON delay) to prevent simultaneous component startup and a fixed 45 second delay on break (OFF delay) to allow the blower to dissipate remaining