Hardware - Johnson Controls 300 Series Manual

76 Network Control Module 300 Series Technical Bulletin

Hardware

The Fire-Net NCM is available as NU-NCM300-FIRE or
NU-NCMFIRE-1 and includes the Fire-Net NCM, a special,
preinstalled ARCNET controller board (NU-ARC101-0) to connect to
the Metasys N1 LAN, and 2 MB memory modules. A power cord,
rather than wires, connects the Fire-Net NCM to a Fire Watchdog
Enclosure (WD-TIMER) or a UPM power outlet.
A field-installable Media Interface Board (MIB-OWS) is needed to
connect the Fire-Net NCM to the Metasys Intelligent Fire Network
(MIFN) Communication circuit. See the Order Numbers section of this
appendix for a complete list of the components required for the
Fire-Net NCM.
Note: Do not use a standard NCM300, standard ARCNET boards
(NU-NET101-0), or other equipment not mentioned in the
Fire Network literature. The MIFN is not UL Listed if any
substitutions are used.
Power Supply
A UL Listed power supply is shipped with the Fire-Net NCM. The
power consumption requirements of the NU-NCM300-FIRE and
NU-NCMFIRE-1 are the same as the standard NCM300. See the
Installation Considerations section of this technical bulletin for the
power requirements of the NCM300.
To comply with the UL Listing, a UPS must supply power to the
Fire-Net NCM. The UPS must have capacity to provide operating
power for the time specified in applicable fire alarm building codes,
typically 24 to 60 hours. For more information on UPS system
requirements, see the Metasys Intelligent Fire Network Technical
Bulletin (LIT-448196).