Step1: Disconnect gas and electrical power completely and confirm the unit is cool before starting.
Step2: Remove the access panel and locate the existing flame switch on the mounting bracket.
Step3: Disconnect wiring terminals, noting original connections for correct reinstallation.
Step4: Mount the new flame switch using the bracket alignment and secure firmly.
Step5: Reconnect terminals, ensuring tight fit and proper insulation of connections.
Step6: Restore power and test ignition, confirming stable flame detection and safe shutdown response if flame is lost.