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MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM
OPERATION, DESIGN, & SERVICE MANUAL
REV C
Document # DOC324
Issued: April 26, 2018
Revised: March 22, 2022
UL FILE # EX27541
Section 5 Commissioning System
5 COMMISSIONING SYSTEM
Do not install the electric, pneumatic, or manual valve actuators until the system has been fully commissioned.
Failure to comply could result in personal injury or death from violent cylinder movement or over-exposure to
high concentrations of agent.
e system checkout procedures outlined in this chapter are intended to represent the minimum requirements
for the extinguishing system portion of the system. NFPA 17 shall also be consulted. Additional procedures
may be required by the local authority having jurisdiction (AHJ).
e control system portion of the system providing automatic detection and release should be thoroughly
checked out according to the appropriate technical manual and the requirements of the local authority
having jurisdiction (AHJ) before completing this section.
5.1 System Review
Check security and tightness of cylinder mounting brackets to a solid structure and cylinder bracket straps.
Check and record cylinder pressure gauges and room temperature. Pressure should be 500 psig at 70°F
(34.48 bar at 21°C). For temperatures other than 70°F (21°C) refer to the pressure temperature chart in the
appendix.
Check the stamped fill weight on the cylinder nameplate to verify it is the correct amount for the room as
determined and documented in the design.
Piping should be checked for correct size, length, and grade and compared to the installation drawings,
Janus Design Suite® flow calculation results, and manual limitations.
Check pipe supports for proper type, mounting, and spacing.
Check that nozzle location, size, style, and drill diameters of orifices match both installation/design drawings
and calculations.
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