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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 2 System Components and Description
2 SYSTEM COMPONENTS AND DESCRIPTION
e Janus Fire Systems® Mv and Lv Series Engineered Dry Chemical Fire Extinguishing Systems can be
divided into the following component categories:
1. Agent Storage Components - Storage components consist of the cylinder assembly(s), which contains the
ABC dry chemical and the cylinder bracket(s), which holds the cylinder assembly securely in place.
2. Agent Distribution Components - Distribution components consist of the discharge nozzles used to
introduce the ABC dry chemical into a protected hazard along with the associated piping system used to
connect the nozzles to the cylinder assembly.
3. Trim Components - Trim components complete the installation of the suppression system and consist of
connection fittings, pressure gauge, low-pressure supervisory switch, electric valve actuator, and manual valve
actuator.
4. Multi-Cylinder Arrangement Components - Multi-cylinder arrangement components consist of the
pneumatic valve actuator(s), actuation check valve, vent check, actuation hose, and fittings required for a
multiple cylinder arrangement.
5. Supplemental Components - Supplemental components include the discharge pressure switch and manifold
check valve. ey supplement the core equipment or complete a specific multi-cylinder configuration.
6. Control Panel - is device monitors the condition of the electric actuator, detectors, warning devices,
cylinder pressure, and any manual release and abort stations. All electric or electronic devices must connect to
the control panel in order to function.
7. Detection and Alarm Devices - Detection devices coupled with manual release stations maximize system
efficiency while audible and visual alarm devices alert staff of alarm conditions.
e following sections describe the operation and function of all controls and indicators that are used with
the Janus Fire Systems® Mv and Lv Series Systems.
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