Any person, firm or corporation violating any of the provisions of Section 420.1 et seq. of this title, or any rule promulgated thereunder, or installing in this state any liquefied petroleum gas system or appliance which does not comply with such safety rules shall be guilty of a misdemeanor, and upon conviction thereof such person or the responsible members of such firm, or the responsible officers of such corporation, shall, in addition to any fine imposed by the Administrator pursuant to Section 420.6 of this title, be punished by a fine of not less than Five Hundred Dollars ($500.00) or imprisonment in the county jail for not more than thirty (30) days, or by both such fine and imprisonment.