The Inspector'sTEST products are designed to perform the required sprinkler system's alarm and water flow test. They can also be utilized to test the opening of a dry-pipe or preaction valve and the trip time from when the valve is opened until the arrival of water at the furthest point in the system.
On a wet system, Inspector'sTEST should be placed downstream of the waterflow alarm, which could be at the sprinkler riser or remote from the riser. Some jurisdictions have requirements or preferences to locate the inspector's test remotely from the riser, so this is at the discretion of the AHJ.
For efficient testing, FM Global (FM Global 2-0 2.6.5) requires the installation of the Inspector's Test Connection in an easily accessible location. Also, ensure that it's capable of handling the maximum expected water discharge and has an orifice that matches the smallest orifice size of any sprinkler within the connected system. Connect the Inspector's Test Connection to the sprinkler system using piping with a minimum diameter of 1 inch (25mm) but not larger than the smallest branch line pipe in the system and don't forget to attach an identification tag.
Dry and preaction systems should have the Inspector'sTEST located on the end of the most distant sprinkler pipe for each system.