Step1: Shut off the main gas supply and disconnect electrical power to the equipment.
Step2: Allow the appliance to cool completely and verify no gas pressure remains in the line.
Step3: Remove the access panel and disconnect the existing valve from gas and pilot connections.
Step4: Install the new valve, ensuring correct thread alignment and tighten securely without overtightening.
Step5: Reconnect pilot and thermocouple lines as originally configured.
Step6: Restore gas and power, then check all joints for leaks using a soap solution before testing ignition.