User Manual

www.N2KB.nl page 7
10.2 EXTERNAL RELEASE INPUT
The NANO has a separate input for an external release extinguishing button. The external release
extinguishing button has the same function as the dual release extinguishing buttons (fire buttons)
on the front of the panel.
10.3 EXTERNAL HOLD INPUT
The NANO has a separate input for an external hold-off button. The external hold-off button has the
same function as the internal hold-off button.
11 O UTPUTS
The NANO is equipped with 5 outputs, two monitored and three potential free. The monitored
outputs are for the extinguishing release output and the electronic sounder/beacon and are scanned
for open and short circuit fault conditions. The VFC outputs have a contact load of 30 VDC /1A.
11.1 MONITORED EXTINGUISHING OUTPUT
THE NANO is equipped with a fire extinguisher output monitored for short circuit and wire breakage.
In combination with the ETB (Extinguishers Terminal Board), the NANO's extinguishing output is
protected against reverse polarity and equipped with surge protection.
11.2 MONITORED SOUNDER OUTPUT
This output, intended for the optical and/or acoustical alarm device, is monitored for short circuit and
wire break by placing a 10 KΩ end-of-line monitoring resistor in the loud alarm device.
12 C ONTROL BUTTONS
The NANO has a clear and orderly front
panel. The figure shows the controls
and indications with text.
12.1 Mute
The buzzer can be silenced at any time
by pressing the Mute button. To
silence the external sounder, press the
Mute button twice. In case of a second alarm the sounder and buzzer will be activated again.
12.2 RESET
After the cause of the alarm has been determined the NANO can be reset by pressing the Reset
button. Manual Call Points, if triggered, must first be reset locally.
12.3 LAMP TEST
All indicators and buzzer can be tested at any time by pressing the Mute and Reset simultaneously.