What is the maximum water temperature that can flow through the sprinkler portion of the system?

The maximum water temperature that can flow through the sprinkler portion of the system is 120°F. This limit is established to ensure the proper functioning of the sprinkler heads and the integrity of the entire fire protection system. Water at higher temperatures can negatively affect the performance of the sprinkler heads, including the potential for damage to the heat-sensitive elements that activate the sprinklers during a fire.

In fire protection systems, maintaining a specific temperature threshold is crucial for safety and efficacy. Sprinklers are designed to operate optimally at temperatures below this limit, and exceeding it could lead to premature activation or even failure to activate when required. Hence, the maximum temperature is set at 120°F to balance effective operation and safety standards.