5-307: PERMITS:
No gas fitter or plumber shall install a conversion burner, floor furnace, central heating plant or gas engine, or make alterations to installed house piping in any building or structure, without first obtaining a permit to do such work from the inspector. Permits will not be required for setting or connecting other gas appliances where such connections are made to existing outlets previously installed by a licensed plumber or gas fitter. (2000 Code § 5-307)