Page 67 - CPVC Fire Sprinkler Products Installation Instructions & Technical Handbook
P. 67

INSTALLATION 65 System Acceptance Testing (Hydrostatic Pressure Test)
Never use compressed air or nitrogen in lieu of or to replace the required hydrostatic system acceptance testing. Any pre-testing performed with low pressure air or nitrogen should follow the recommendations on Page 65. System failure when using high-pressure compressed air or nitrogen may result in property damage, serious injury, or death.
Once an installation is completed and joints are properly cured per the above instructions, the system shall be pressure tested with water at 200 psi (13,8 bar) for 2 hours. See Table V for curing conditions at 200 psi (13,8 bar).
The system shall be pressure tested with water at 50 psi (3,4 bar) in excess of maximum pressure when the maximum system pressure is to be maintained in excess of 150 psi (10,3 bar). See Table W for curing conditions at 225 psi (15,5 bar). This requirement is in accordance with the requirements established by NFPA Standard 13, Section 24.2.1 (2013 Edition).
Sprinkler systems in one- and two-family dwellings and mobile homes may be pressure tested with water at line pressure, after following Table U curing conditions, in accordance with the requirements established by NFPA 13D, Section 4.3 (2013 Edition).
When pressure testing, the sprinkler system shall be slowly filled with
water and the air bled from the highest and farthest sprinklers before 4 pressure testing begins. Air must be removed from piping systems
(plastic or metal) to prevent it from being locked in the system when pressure is applied. Entrapped air can generate excessive surge
pressures that can result in bodily injury and/or property damage, regardless of the piping materials used.
If a leak is found, the leaking pipe and/or fitting must be cut out and discarded. A new section of piping can be installed using couplings or a union. Unions should be used in accessible areas only.
Limited Pressurized Air or Nitrogen Testing Allowance
Extreme caution must be exercised when applying pressurized air or ni- trogen to TYCO BLAZEMASTER CPVC systems. System failure caused by high-pressure compressed air or nitrogen can cause property damage, severe personal injury, or death.
If it is necessary to pre-test a TYCO BLAZEMASTER CPVC piping system with air or nitrogen prior to the required hydrostatic test, the following recommendations must be followed:
1. Maximum pressure (air or nitrogen) must never exceed 15 psig and must be regulated using the appropriate air maintenance device.
2. Air or nitrogen introduced into the system must not contain oils, lubricants, or other chemicals. Use an oil-less compressor. (Information regarding chemical and substance compatibility with TYCO BLAZEMASTER CPVC can be found at
3.Proper use of Personal Protective Equipment (PPE), including but not limited to safety glasses, hard hats, and protective gloves, must be worn

   65   66   67   68   69