Common Questions Is the Lennox 36K28 an automatic or manual reset switch

and display cases requiring precise thermal management

it supports 120/240V field selectable line voltage for the ignitor while maintaining a standard 24VAC control circuit

This 120V ignition module provides a fixed 5-second pre-purge to clear the combustion chamber and a 4-second trial for ignition (TFI) to ensure safe burner startup

Lennox 38M67 Limit Switch 322055-301 Common Questions Is the LennoxThe Lennox 38M67 Limit Switch is a critical safety component designed for precise thermal regulation within Lennox residential furnaces and HVAC systems. This L190 30F furnace limit switch operates as a primary safety control, featuring a fixed temperature setting of 190F for the high limit cutout and a 30F differential for the automatic reset. Built to handle 24V or 120V ignition systems, this SPST (Single Pole Single Throw) configuration ensures the