The VDRS waterflow detector shall be used in wet pipe fire sprinkler systems only. It shall not be used as sole initiating device in both deluge and preaction systems. Any misuse in either deluge system or preaction systems may result in an unintended discharge caused by a surge, trapped air or a short retard time.
Do not use the detector on copper pipe. The clamping forces of the mounting bolts may make the copper pipe deformation and prevent the detector from proper function.
Do not install steel or iron pipe sections in copper piping for mounting a waterflow detector. Incompatibility between the dissimilar metals will cause bi-metallic corrosion.
Be sure the direction of flow arrow and directional cover point in the correct direction or else water flow will go unreported. See FIGURE 3 and FIGURE 6.
