Page 74 - CPVC Fire Sprinkler Products Installation Instructions & Technical Handbook
P. 74

for use with TYCO CPVC systems.
• Prior to using Glycerin Antifreeze, consult the local authority having jurisdiction on the use of antifreeze solutions in fire sprinkler applications.
• Prior to using Glycerin antifreeze solutions, consult the NFPA 13 standard for rules and guidelines.
• If hydro testing the sprinkler system, ensure that the system is completely drained of water prior to introducing LFP® Antifreeze or Glycerin antifreeze. The antifreeze solution will not fully mix with trapped water in sprinkler drops and sprinkler system low points, potentially allowing freezing in these areas of the system.
• A Glycerin antifreeze sprinkler system is more prone to leakage than a water only sprinkler system. Glycerin characteristics increase the capacity for leakage and can be successfully addressed by using care when making threaded connections by ensuring sufficient torque is applied to the male and female threads being mated.
A thread sealant shall be used in making threaded connections. TEFLON thread tape is the recommended sealant. Some thread sealants other than TEFLON thread tape contain solvents or other materials that maybe damaging to CPVC. For other types of thread sealants, which have been specifically investigated and confirmed to be “System Compatible,” refer to the FBC System Compatible Program at
TYCO recommends between 14 to 21 lb-ft (19,0 to 28,5 N∙m) of torque to achieve a leak free 1/2 in. (DN15) NPT seal. Do not use fittings or sprinklers with damaged threads in glycerin systems, as the damaged threads create increased leakage potential. Rapid Seal Adapter fittings are not to be used with a thread sealant. The manufacturer instructions should be followed to obtain a good seal to prevent leaking in Rapid Seal Adapter fittings.
• Glycerin antifreeze can be cleaned with alcohol based cleaners. Prior to using any cleaner on a surface, ensure compatibility with the surface material to be cleaned. If compatibility with the surface to be cleaned is questionable, a small section of the surface should be spot cleaned prior to wide spread application of the cleaner.
Batt Insulation Requirements and Suggestions
Many jurisdictions recommend the use of batt insulation for freeze protection in place of antifreeze solutions. These jurisdictions typically publish recommended batt insulation guidelines that provide the minimum thickness of insulation to be utilized. These minimum insulation recommendations should be followed. Insulation requirements may vary by geographic area given climate conditions. Batt insulation is used to maintain a minimum water temperature in the sprinkler piping of 40°F (4,4°C). The minimum insulation recommendations pictured in the Appendix of NFPA 13D are shown primarily for piping wood frame ceilings with an unheated attic or an un-insulated roof above. Many jurisdictions do not allow the installation of water filled sprinkler piping in unheated outside walls. Consult the local authority having jurisdiction prior to installing batt insulation for freeze protection with BLAZEMASTER CPVC products.

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