How should dry sprinklers be installed?
Dry sprinklers should always be installed in the side outlet of a tee. The dry sprinkler is designed to extend up into the fitting to prevent the accumulation of deposits on top of the sprinkler. Dry sprinkler should never be installed in an elbow or coupling. Installation in an elbow or coupling can impede the operation or allow deposits to accumulate on the top of the dry sprinkler. Additionally, in freezers Reliable recommends that dry sprinklers extend at least 14 inches above (outside) the freezer wall or ceiling. It is often a good idea to insulate the dry sprinkler and seal the hole made in the freezer inside and outside the freezer wall or ceiling. If the freezer contains food products, make sure the sealant you use is FDA Approved. Dry sprinklers are required to be inspected and tested every 10 years in the latest edition of NFPA 25.
