Step1: Turn off gas supply and ensure burner is completely cool before starting installation.
Step2: Remove existing air shutter assembly carefully using appropriate screwdriver or wrench tools as required.
Step3: Align new twin plate air shutter with burner mounting slots and orifice opening correctly.
Step4: Secure assembly tightly ensuring orifice is properly seated and sealed in place safely.
Step5: Restore gas supply test ignition carefully and check for leaks using approved method procedure.