Concealed installations are cpvc pipe typically those located behind a wall or ceiling. A barrier not only helps compartmentalize the heat from escaping into an upper space, which would delay sprinkler activation, it also protects the pipe itself from high temperatures.In exposed locations where it is desirable to not run the material behind a wall, ceiling, or other barrier fire system professionals must install CPVC components below a flat, horizontal, and smooth surface, and ensure that fire sprinklers are placed at specified maximum distances, ordinary pendent sprinklers should be spaced not more than feet apart, and sidewall sprinklers must be spaced no more than feet apart.
That said, the BlazeMaster installation guide, for example, specifies a lot of scenarios with nuanced specifications. Be sure to check the specific manufacturer installation guide, as there are certain rules that may apply in exposed applications that can affect spacing, the distance from the ceiling, the sprinkler temperature, and even densities.The joist length is enforced in part through regulations on blocking, which is the placement of wood or insulation perpendicular to joists in order to trap heat and trigger sprinklers faster in the case of fire. Spears specifies as the maximum joist length before blocking must be used while the limit for BlazeMaster is feet.
In addition, any protected space that is larger than 1,000 square feet has to be blocked divided into smaller spaces when using lengths of non-BlazeMaster CPVC pipe.CPVC can be used in basements that have both solid wood joists and composite wood joists. However, BlazeMaster has one set of installation standards and guidelines for both scenarios, while other manufacturers have different procedures for each. Again, make sure to consult the specific manufacturer’s installation instructions when putting in a system.
CPVC fire sprinkler products can be installed in attics where the temperature is greater than if ventilation is provided or the product is insulated. However, special, listed sprinklers must be used which guarantee that the pipe will be protected from fire in the event it reaches the attic.Other spaces in need of consideration when installing a CPCV fire sprinkler system are air plenums, open spaces above or below the floor used for air circulation. Fire sprinkler professionals should design systems so that CPVC components are placed adjacent to air plenum spaces and never over a ventilation opening, such as a grill in the ceiling.
