version 4.7.2 – July 10th, 2022 Firmware version V2.1.7 and higher
EXXFIRE Installation and Service Manual 10
2 PRODUCT DESCRIPTION
EXXFIRE
®
750CNF/1500CNF/2250CNF
The EXXFIRE® 750CNF/1500CNF/2250CNF is a unit that is used to detect and extinguish fires in
small protected spaces, such as server racks and electrical cabinets. The EXXFIRE®
750CNF/1500CNF/2250CNF is equipped with:
• One, Two or Three Cool Gas Generators (CGG) to release nitrogen gas
• Air inlet fan and filter
• Three optical sensors to detect smoke
• Software to ensure robust decision making
• Electronics for configuration settings and status outputs
• Power supply unit with back-up battery
• Input terminals for Manual Activation Button and Door switch
• RS485 communication bus to connect up to 8 systems to work as one system to protect larger
volumes up to 36 m3
• User Interface with status LEDs, numerical display, push buttons and a key switch
Upon detection of a fire event, nitrogen gas is released from a Cool Gas Generator (CGG). The
nitrogen gas dilutes the oxygen level within the protected space, and consequently suppresses the
fire. This is in line with common practice using compressed IG-100, or other clean agents in Higher
Hazard Class A fires at 20
°
C. If Normal Class A fires are taken into consideration the systems can
protect a larger volume (see NFPA 2001 for the exact calculation)
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