Heads up: There are no amended sections in this chapter.
The installing contractor shall do the following:
- Notify the authority having jurisdiction and the property owner or the property owner's authorized representative of the time and date testing will be performed
- Perform all required acceptance tests (see Section 25.2)
- Complete and sign the appropriate contractor's material and test certificate(s) (see Figure 25.1)
- Remove all caps and straps prior to placing the sprinkler system in service
Where modification is made to an existing system affecting more than 20 sprinklers, the new portion shall be isolated and tested at not less than 200 psi (13.8 bar) for 2 hours.
Modifications that cannot be isolated, such as relocated drops, shall require testing at system working pressure.
The test pressure shall be read from a gauge located at the low elevation point of the system or portion being tested. The pressures in piping at higher elevations shall be permitted to be less than 200 psi (13.8 bar) when accounting for elevation losses. Systems or portions of systems that can be isolated shall be permitted to be tested separately.
Additives, corrosive chemicals such as sodium silicate, or derivatives of sodium silicate, brine, or similar acting chemicals shall not be used while hydrostatically testing systems or for stopping leaks.
Piping between the exterior fire department connection and the check valve in the fire department inlet pipe shall be hydrostatically tested in the same manner as the balance of the system. After repair or replacement work affecting the fire department connection, the piping between the exterior and the check valve in the fire department inlet pipe shall be isolated and hydrostatically tested at 150 psi (10.3 bar).
Provision shall be made for the proper disposal of water used for flushing or testing.
Test blanks shall have painted lugs protruding in such a way as to clearly indicate their presence.
The test blanks shall be numbered, and the installing contractor shall have a recordkeeping method ensuring their removal after work is completed.
Modifications to existing systems shall be tested for air leakage using one of the following test methods:
- An air pressure test at 40 psi (2.7 bar) shall be performed for 2 hours.
- With the system at normal system air pressure, the air source shall be shut off for 4 hours. If the low pressure alarm goes off within this period, the leaks shall be addressed.
Waterflow detecting devices including the associated alarm circuits shall be flow tested through the inspector's test connection and shall result in an audible alarm on the premises within 5 minutes after such flow begins and until such flow stops.
Dry systems calculated for water delivery in accordance with 22.214.171.124 shall be exempt from any specific delivery time requirement.
The automatic operation of a deluge or preaction valve shall be tested in accordance with the manufacturer's instructions.
The manual and remote control operation, where present, shall also be tested.
The backflow prevention assembly shall be forward flow tested to ensure proper operation.
The minimum flow rate shall be the system demand, including hose stream allowance where applicable.
For sprinkler systems with non-fire protection connections, additional information shall be appended to the contractor's material and test certificate for aboveground piping shown in Figure 25.1 as follows:
- Certification that all auxiliary devices, such as heat pumps, circulating pumps, heat exchangers, radiators, and luminaires, if a part of the system, have a pressure rating of at least 175 psi or 300 psi (12.1 bar or 20.7 bar) if exposed to pressures greater than 175 psi (12.1 bar).
- All components of sprinkler system and auxiliary system have been pressure tested as a composite system in accordance with 25.2.2.
- Waterflow tests have been conducted and waterflow alarms have operated while auxiliary equipment is in each of the possible modes of operation.
- With auxiliary equipment tested in each possible mode of operation and with no flow from sprinklers or test connection, waterflow alarm signals did not operate.
- Excess temperature controls for shutting down the auxiliary system have been properly field tested.
Pressure gauges shall be installed at critical points and readings shall be taken under various modes of auxiliary equipment operation.
Waterflow alarm signals shall be responsive to discharge of water through system test pipes while auxiliary equipment is in each of the possible modes of operation.
The installing contractor shall provide the property owner or the property owner's authorized representative with the following:
- All literature and instructions provided by the manufacturer describing proper operation and maintenance of any equipment and devices installed
- NFPA 25
The installing contractor shall identify a hydraulically designed sprinkler system with a permanently marked weatherproof metal or rigid plastic sign secured with corrosion- resistant wire, chain, or other approved means. Such signs shall be placed at the alarm valve, dry pipe valve, preaction valve, or deluge valve supplying the corresponding hydraulically designed area.
The sign shall include the following information:
- Location of the design area or areas
- Discharge densities over the design area or areas
- Required flow and residual pressure demand at the base of the riser
- Occupancy classification or commodity classification and maximum permitted storage height and configuration
- Hose stream allowance included in addition to the sprinkler demand
- The name of the installing contractor 25.6* General Information Sign.
The installing contractor shall provide a general information sign used to determine system design basis and information relevant to the inspection, testing, and maintenance requirements required by NFPA 25.
Such general information shall be provided with a permanently marked weatherproof metal or rigid plastic sign, secured with corrosion-resistant wire, chain, or other acceptable means.
Such signs shall be placed at each system control riser, antifreeze loop, and auxiliary system control valve.
The sign shall include the following information:
- Name and location of the facility protected
- Occupancy classification
- Commodity classification
- Presence of high-piled and/or rack storage
- Maximum height of storage planned
- Aisle width planned
- Encapsulation of pallet loads
- Presence of solid shelving
- Flow test data
- Presence of flammable/combustible liquids
- Presence of hazardous materials
- Presence of other special storage
- Location of venting valve
- Location of auxiliary drains and low point drains on dry pipe and preaction systems
- Original results of main drain flow test
- Original results of dry pipe and double interlock preaction valve test
- Name of installing contractor or designer
- Indication of presence and location of antifreeze or other auxiliary systems
- Where injection systems are installed to treat MIC or corrosion, the type of chemical, concentration of the chemical, and where information can be found as to the proper disposal of the chemical