Flash point.
Municipal Code of Chicago § 18-28-1207.1
in effect18-28-1207.1 Flash point.
The flash point of transfer fluid in a hydronic piping system shall be a minimum of 50°F (28°C) above the maximum system operating temperature.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2689113Fetched: 10/24/2026
