The flash point in a hydronic system is how many degrees Fahrenheit above the maximum operating temperature?

The flash point in a hydronic system is defined as the temperature at which the liquid can form enough vapor to ignite in air. For safety considerations, it is important that the flash point be maintained at a specific distance above the maximum operating temperature of the system. In high pressure boiler operations, a commonly accepted safety threshold is a flash point that is 50°F above the maximum operating temperature.

This buffer helps ensure that even under the highest operational conditions, the risk of ignition of the fluid is minimized. This is crucial to prevent any potential hazards that may arise from overheating and vapor formation in the presence of flammable materials. Choosing this specific threshold reflects best practices in maintaining safety standards in hydronic heating systems.