Smith 100109203 burner assembly is a direct OEM replacement engineered for residential and light commercial natural gas water heaters

The internal SPDT switch is typically rated for 120/240V AC applications

Does it require a neutral wire for line voltage applications

This specific model is optimized for 120V / 60Hz electrical systems

Trane SWT2291 Pressure Switch 324846-701 Smith 100109203 burner assembly isThe Trane SWT2291 is a commercial grade SPNO negative pressure switch engineered to maintain critical air pressure differentials in demanding HVAC and industrial environments. This Trane OEM part features a single pole, normally open contact configuration, providing precise activation when vacuum levels drop below set parameters. With an operational range of 0. 5 to 2. 5 inches water column (WC) and field adjustable set points, it offers the