Standard for Quality of Heat Transfer Fluids Used in Hydronics Systems
This Standard is intended to provide minimum requirements for maintaining quality of liquid aqueous based heat transfer fluids over the life of the system and optimizing the life of system components in both residential and non-residential closed hydronic heating and cooling applications.
This standard does not apply to the following:
(a) Industrial and process applications, evaporative coolers, open systems, and domestic hot and cold water systems
(b) Systems with an operating temperature exceeding 212°F (100°C)
(c) Systems utilizing silicones or hydrocarbon oils as the heat transfer fluid