Step1: Shut off gas and electrical supply, then let burner assembly cool fully before handling.
Step2: Remove access cover and disconnect existing thermopile from pilot bracket and control valve terminals.
Step3: Install new thermopile, positioning tip directly in steady pilot flame for accurate millivolt generation.
Step4: Reconnect the leads securely to the gas valve.
Step5: Restore gas, light pilot, and confirm stable flame and ignition response.
Step6: Check all connections for leaks and secure panels before operation.