Step1: Shut off electrical power and close the gas supply valve before servicing the equipment.
Step2: Label and disconnect all wiring, then remove the old gas valve from the gas line.
Step3: Apply approved gas-rated thread sealant to the pipe threads and install the new valve in the correct flow direction.
Step4: Reconnect the wiring terminals according to the equipment diagram.
Step5: Restore the gas supply and check all fittings for leaks using a soap-and-water solution.
Step6: Turn power back on and test ignition and gas valve operation to ensure safe performance.