Lennox 16D74 Relay 319847-401 and required labeling for the

and required labeling for the conversion record to stay compliant with local mechanical codes

Because this is an ODP (Open Drip-Proof) motor

It uses a two-wire control signal with a path for the auxiliary end switch to signal other HVAC components

What happens if the switch gets stuck open

Common Questions: Is the 912-0001-41 compatible with my current 90A contactor

Lennox 16D74 Relay 319847-401 and required labeling for theThe 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