User's Manual
Design
September 2013 3-74 P/N 81-CO2MAN-001
Figure 3-12. Typical Actuation Arrangement Using In-line Discharge Delay
3-14 DETECTION DEVICES, ALARM DEVICES AND CONTROL PANELS
The majority of carbon dioxide suppression systems will include electrical detection,
notification, and actuation. This section covers the requirements of NFPA 12 for carbon dioxide
releasing systems. NFPA 70 and 72 shall be referenced for additional information.
3-14.1 Suppression Control Panels
The Suppression Control Panel shall be listed for use with all field devices, including the
electrical control heads.
All input (alarm initiation and supervisory) and output (notification and actuation) circuits shall
be supervised for system trouble.
The suppression control panel should be connected to existing protective signaling (fire alarm)
system(s) to aid life safety and property protection as outlined in NFPA 72, National Fire Alarm
Code.
3-14.2 System Power Supply
The power supply for the operation and control of the system shall be comprised of a primary
source and a secondary source.
The primary source of energy shall have the capacity for the intended service and shall be
supervised and reliable.
On loss of primary source or due to low voltage of the primary energy source, an independent
secondary (standby) power supply shall supply energy to the system. The secondary (standby)
supply shall be capable of operating the system under maximum normal load for 24 hours and
then be capable of operating the system continuously for the full design discharge period.
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