When troubleshooting furnace power issues

Both the input power and the thermostat signal must be 120VAC

Common Questions: How do I know if my 008520F limit switch has tripped

It features a PG 9 cable gland and is rated for voltages up to 250 V

or failure of the main burner to ignite despite the pilot being lit

Johnson Controls VG1241DR Valve 322838-752 When troubleshooting furnace power issuesThe Johnson Controls VG1241DR Valve is a high performance 1 1 4 inch NPT ball valve engineered for precise control in HVACR systems. Featuring a 29. 2 Cv rating, this two way control valve is built with a forged brass body and plated brass trim, making it a reliable choice for regulating hot or chilled water and 50% glycol solutions. The equal percentage flow characteristic, provided by a specialized characterized insert, ensures optimal heat transfer