Where a department of administration is established, it shall be headed by a director who shall be known and designated as business administrator. He shall be chosen solely on the basis of his executive and administrative qualifications with special reference to his actual experience in, or his knowledge of, accepted practice in respect to the duties of his office as hereinafter set forth. At the time of his appointment, he need not be a resident of the city or State, but during his tenure of office he may reside outside the city only with the approval of council. He shall have, exercise and discharge the functions, powers and duties of the department. The department, under the direction and supervision of the mayor, shall:
53 P.S. § 41416