In addition to the requirements and provisions contained in the Building Code of the City, all air-moving equipment systems installed, altered, repaired or added to in the City shall be installed, altered, repaired or added to in strict accordance with the provisions for the installation of air-moving equipment systems, as per the BOCA Basic National Mechanical Code adopted under Section 1709.01, insofar as such requirements and provisions are not in conflict with the Building Code of the City. (1970 Code Sec. 14-3)