Title: Tørrsprinkler.pdf
For dry pipe system installations, use only the side outlet of maximum 2 1/2 in. reducing tee when locat- ing Series DS-1 Dry-type Sprinklers directly below the branchline; other- wise, use the configuration shown in Figure 12 to assure complete water drainage from above Series DS-1 Dry-type Sprinklers and the branch- line. Failure to do so may result in pipe freezing and water damage.NOTICE Do not install Series DS-1 Dry-type Sprinklers into any other type fitting. Failure to use the appropriate fitting may result in one of the following:failure of the sprinkler to operate properly due to formation of ice over the Inlet Plug or binding of the Inlet Pluginsufficient engagement of the Inlet pipe-threads with consequent leakageDrainage In accordance with the minimum requirements of the NATIONAL FIRE PROTECTION ASSOCIATION for dry pipe sprinkler systems, branch, cross, and feed-main piping connected to Dry Sprinklers and subject to freezing tem- peratures must be pitched for proper drainage.