Key Benefits Universal Field Replacement: Direct drop-in for Lochinvar 100077849 and TST1119

If airflow is clear and the SWT1611 remains open while cold

this fitting is essential for maintaining integrity in gas manifold and pilot line configurations

the automatic reset mechanism restores the circuit for continued duty

Engineered to break the 24V circuit if internal temperatures exceed the 325-degree threshold

Fenwal 05-129921-124 Wiring Harness Els PW 17895 Key Benefits Universal Field Replacement:As a veteran tech, you know that a reliable connection is the backbone of any furnace or boiler repair. The Fenwal 05 129921 124 Wiring Harness is a 24 inch assembly specifically engineered for high performance Fenwal ignition control systems. This OEM wiring harness features a robust multi pin connector designed to interface seamlessly with 05 and 35 series ignition modules, ensuring stable signal transmission for critical HVAC burner control