How do you determine the required freeze point of the antifreeze solution in a system based on the anticipated temperatures?
For example, if the freeze point of the solution is -16 degrees F, is this acceptable if there is a chance of a -16 degrees F or colder overnight temperature? Or should there be more safety factor built in as NFPA 13 indicates that any system exposed to temperatures below 40 degrees F have antifreeze so should a 8 degree safety factor be used? I know antifreeze is no longer allowed in systems unless it is listed but this question refers to existing systems installed prior to 2012. Joan Leedy Dyne Technologies, LLC 2357 Ventura Drive, Suite 108 Woodbury, MN 55125 (800) 632-2304 (651) 917-0644 (651) 917-0646 Fax (651) 230-1177 Cell j...@dyneusa.com
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