The following information is provided as general information and to assist in the protection of a public water supply when an antifreeze solution is required to prevent freezing of fire protection systems:
(a) Antifreeze solutions can consist of either a pure glycerine solution, provided the glycerine is of 96.5% United States pharmacopoeia grade, or of food grade propylene glycol base.
(b) Propylene glycol plus dipotassium phosphate is acceptable for use as an antifreeze solution. The propylene glycol is the antifreeze component; the dipotassium phosphate functions as a bacterial inhibitor.
(c) The antifreeze manufacturers must furnish proof to the supplier of water that the product is of pharmaceutical grade or of food grade quality and that the product contains no harmful or toxic substances.
(d) All antifreeze products used in potable water systems shall be approved by the Ohio Environmental Protection Agency, Division of Public Drinking Water, Water Quality Section, prior to use.
(e) All fire protection sprinkler systems that contain approved antifreeze solutions shall have an approved reduced pressure principle backflow prevention device on that leg of the system or on the complete sprinkler system.
(Ord. 167-96. Passed 9-16-96.)
MISCELLANEOUS - AIR CONDITIONING