Existing data centers protected with FM200 or other clean agent systems can be a challenge to contain because the cost of adding or moving nozzles is very high. One alternative has been the use of electronic fuse links that trigger off the FM200 system. Though the links are pricey (about $250 each) and need testing, it is a workable solution that can still offer an ROI that meets project goals.

Electronic Fuse Links

The electronic links pictured above where installed on a hot aisle containment system pictured below. The site has a ceiling with two levels and the FM200 nozzles are installed in the lower section of the ceiling. The curtains were installed with a gap above them to allow some air movement (so not total isolation) in order to assure that air flow to the existing smoke detectors were not obstructed.

Hot Aisle Containment

These links have an electronic trigger off a signal from the FM200 system as well as a thermally activated mechanism. The wiring requirements are similar to those for smoke detectors and is through conduit that you can see in the above picture. The other wires are tethers to stop the fall of the curtain after it drops about two feet to clear the FM200 nozzles.