User Manual
Concise user manual | NANO-EN | October 1, 2022 | version 2.2 page 10
14 DIP
SWITCHES
14.1 STANDARD SETTING
In a marine application, it is NOT common for a fire suppression system
intended for an engine room to be released by an automatic fire detector but
ONLY by manual release. The most common Marine setting of the NANO
system is based on marine rules and standards. Under normal condition only
the green Power LED and the Manual Only LED lite to indicate the system is
operating correctly.
Example setting for a vessel’s engine room:
The extinguishing delay time 20 seconds
The NANO operate in the manual mode only
The use of automatic fire detectors is only informative
14.2 DIRECT RELEASE (DP1)
If a fire alarm is detected, by the automatic fire detectors the countdown timer is
started, you can override the timer when press the manual release.
14.3 VEHICLE MODE (DP2)
If the extinguishing system is intended to protect the engine bay of a vehicle, a
programmed extinguishing delay must be disabled when the vehicle is parked.
14.4 EXTINGUISHING RELEASE OUTPUT (DP3)
The N2KB NANO is equipped with two activation techniques for the activation of
fire extinguishing systems. Standard the NANO is programmed for the activation
of electrical igniters from aerosol fire extinguisher units. When DIP is set in the ON
position, the NANO is suitable for activate an extinguishing system using a
solenoid. Don’t use DP3 ON in combination with an ETB it will damage the NANO.
14.5 SINGLE OR DUAL FIRE ALARM (DP4)
Normally we activate in dual fire zone mode. In some cases, a single mode may be
useful. In dual mode, the extinguisher(s) are released after an alarm condition in
both fire zones. In single mode, when only one fire zone is in alarm.
14.6 VFC RELAY (DP5)
Here one has a choice to have the relay active at the first fire alarm or after the
second fire alarm.
14.7 EXTINGUISHING DELAY TIMER (DP6-7-8)
Extinguishing delay is only useful in normally occupied spaces. For the
extinguishing delay timer setting, there are 3 DIP switches, which that can be set
between 0 and 35 seconds, with steps of 5 seconds. The count-down timer is used
to wait a certain amount of time before extinguisher system is activated.