UL 2166-2021 pdf download

UL 2166-2021 pdf download.Halocarbon Clean Agent Extinguishing System Units.
3.21 PROOF TEST PRESSURE – The factory test pressure of each cylinder used to evaluate cylinder leakage and construction integrity. For Department of Transportation (DOT) or Transport Canada, Transportation of Dangerous Good Regulations (TDGR) approved cylinders, the factory test pressure is specified in the appropriate DOT or TDGR specification. For ASME vessels, the factory test pressure is specified in Section VIII, Pressure Vessels, of the ANSI/ASME Boiler and Pressure Vessel Code. For non- DOT cylinders, non-TDGR cylinders, and non-ASME cylinders, the factory test pressure is three times the cylinder operating pressure at 21°C (70°F). 3.22 SELECTOR (DIRECTIONAL) VALVE – A device that is installed in the piping of an extinguishing system and that directs the flow of extinguishing agent to the appropriate protected volume. This valve is used only when more than one volume is being protected by a single extinguishing system. 3.23 TOTAL FLOODING SYSTEM – A system consisting of a supply of halocarbon clean agent arranged to discharge the extinguishing agent into the intended protected volume and to fill that volume to an effective extinguishing agent concentration. 4 Components 4.1 Except as indicated in 4.2, a component of a product covered by this standard shall comply with the requirements for that component. 4.2 A component is not required to comply with a specific requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 4.3 A component shall be used in accordance with its rating established for the intended conditions of use. 4.4 Specific components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specified limits, and shall be used only under those specific conditions.
6 Owner’s Manual 6.1 When an owner’s manual is provided with an extinguishing system unit, see 59.1, it shall include at least the following: a) Clear indication that it is not a detailed installation, operation, and maintenance manual or design manual (when applicable). b) Clear reference to the availability of the installation, operation, and maintenance manual and design manual by contacting the manufacturer. c) A statement that the system periodically be inspected by trained personnel. d) Information regarding the essentials required to maintain the system in operation both before and after a fire. e) A statement that no modifications are to be made to the system without consulting a qualified system designer who is to refer to the detailed installation or maintenance manual. The statement shall include the following or equivalent wording: “This system is made up of units tested within limitations contained in the detailed installation manual. The system designer must be consulted whenever changes are planned for the system or area of protection. An authorized installer or system designer must be consulted after the system has discharged. ”
9 Controls and Indicators 9.1 An extinguishing system shall be provided with: a) An automatic and manual means of actuation; or b) A manual means of actuation only. An automatic extinguisher unit shall incorporate an automatic means of actuation. 9.2 A manual means of operation shall be provided with a seal or other device to minimize the potential for accidental discharge. 9.3 An extinguishing system unit shall incorporate a pressure gauge for each agent storage container filled with a super pressurized agent and each pneumatic control assembly, showing the pressure within the container. See Sections 13A and 14A, respectively. 9.4 When a manual means of actuation is provided (see 9.1) and it utilizes an electrical power source: a) That electrical power source shall be independent of the power source for the automatic means of actuation; or b) When the power source is used for both manual and automatic actuation, it shall have an independent back-up source, such as a battery. 9.5 A control unit, such as a control panel, push-button station, or similar unit, used as part of an extinguishing system shall comply with the Standard for Control Units for Fire-Protective Signaling Systems, UL 864 or CAN/ULC-S527, Standard for Control Units for Fire Alarm Systems.UL 2166-2021 pdf download.