Step1: Turn off main power/gas supply at source and ensure unit is completely cool.
Step2: Remove existing insert or front panel carefully using proper tools.
Step3: Align new insert with the opening and check fit.
Step4: Secure mounting brackets and screws firmly in place.
Step5: Connect required gas/electrical fittings as per manufacturer guidelines.
Step6: Tighten all fasteners and check stability and alignment.
Step7: Restore power/gas and test operation safely while monitoring for leaks or issues.