Ohio Rev. Code Ann. § 6109.17

The legislative authority of each municipal corporation, or the department or officer having jurisdiction to provide for the raising of revenue by tax levies, sales of bonds, or otherwise shall take all steps necessary to secure the funds for any purpose set forth in sections 6109.11 to 6109.20 of the Revised Code. When the funds are secured, or the bonds therefor have been sold, such funds shall be considered as in the treasury and appropriated for such particular purpose, and shall not be used for any other purpose.