User Manual

www.N2KB.nl page 5
8 N ANO
In addition to the NANO intended for land-based installations, a NANO version
is available with a DNV-CG Type Approval in accordance with the 0339 standard.
This NANO system consists of two components. The basis is formed by the
NANO control panel which is placed on the bridge or in its vicinity. Then there is
an extinguisher terminal box (ETB). This ETB box must be placed outside, but in
the immediate vicinity of the to protected engine room. ETB/L is suitable for an
extinguisher igniting actuator with a maximum resistance of 2Ω. The ETB/H is
suitable for an extinguisher igniting actuator with a maximum resistance of 4Ω.
From the ETB box a cable led to the aerosol extinguisher installed in the volume
to be protected. The cable connection between the NANO control panel and the
fire extinguisher ETB is continuously scanned for faults,
such as short circuit or cable break. From the extinguishers terminal box (ETB)
to the extinguisher’s igniter is also constantly monitored for fault or
malfunction. In a marine application, it is NOT common
that a fire suppression system intended for an engine
room protection is released by an automatic fire
detector. However, the NANO has two fire alarm
zones suitable for connecting marine approved fire detectors such as the
Apollo Orbis Marine series fire detectors. The NANO system can be set up that
fire alarms from these fire detectors, signalized on the NANO panel,
considered as informative only. They don’t have effect on the extinguishing system, nor activate the
extinguishing system. By default, the NANO is set to only manual release, but can be changed to
automatic & manual mode.
9 F EATURES NANO
9.1 ACOUSTIC ALARM
The NANO has an internal attention signal and a monitored output for external sounder/beacon.
9.2 EXTINGUISHANT RELEASE OUTPUT
The N2KB NANO is equipped with two activation techniques for the activation of fire extinguishing
systems. By default, the NANO is programmed for the activation of electrical igniters intended for
aerosol fire extinguisher generators, when DIP switch 3 is set to the ON position, the NANO is suitable
for activating an extinguishing system with a solenoid as actuator.
9.3 HISTORIC EVENT LOG
The NANO has an historic event log memory of 10.000 events readable from a USB port. Connect an
USB cable between the Mini-B USB port and your computer. The device will function as an USB stick.
9.4 COMMUNICATION PORT
The NANO has a Modbus network connection. Modbus enables communication among devices
connected to the same network.