Page 59 - CPVC Fire Sprinkler Products Installation Instructions & Technical Handbook
P. 59

The “Notification to Jobsite Building Trades” placard (Page 99) is to be posted from start to finish of a TYCO CPVC Fire Sprinkler System installation in a location where building trades can take notice. Upon completion of a TYCO CPVC fire sprinkler installation, the placard is to be posted in a conspicuous space adjacent to the water supply to the sprinkler system.
Sprinklers shall be installed only after all the CPVC pipe and fittings, including the sprinkler adapters, are solvent welded to the piping and allowed to cure for a minimum of 30 minutes. Sprinkler fittings should be visually inspected and probed with a wooden dowel to ensure that the water way and threads are clear of any excess cement that may restrict the flow of water before installing the sprinkler. Once installation is complete and cured per Tables U, V and W, the system shall be hydrostatically tested. It is an unacceptable practice to install sprinklers into the sprinkler adapter fittings and then solvent cement to the drop. Failure to allow sprinkler fitting joint to cure before installing sprinklers may result in cement in sprinkler waterway.
Assembly or disassembly of a threaded connection requires extreme care to avoid twisting of the CPVC pipe (for example, removal of a sprinkler from a CPVC pipe drop). A hold back device, approved for use with
CPVC pipe and fittings, must be used on the threaded adapter to
prevent damage to the CPVC piping.

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