What is the maximum time for initial water discharge from the test connection on a dry system?

The maximum time for initial water discharge from the test connection on a dry system is 60 seconds. This timeframe is critical for ensuring the test is effective without compromising system integrity or causing excessive water degradation. During this initial discharge, the goal is to clear out any trapped air and ensure the system is functioning correctly by verifying that water flows through the system as intended.

Setting this limit at 60 seconds helps maintain operational efficiency and prevents potential issues such as water hammer or system flooding, which can occur if water is allowed to flow for too long without control. This standard is set by industry guidelines and ensures that the response time is within an acceptable range for system safety and reliability.

Understanding this limit is essential for sprinkler fitters, as it pertains to both compliance with regulations and maintenance of operational standards within fire protection systems.