Please keep this user manual for future use. It
will expire upon publication of a revised issue
however, so please check when using this manual
if you have the latest available version.
You can check with your distributor, dealer,
AF-X Systems BV or on the website:
www.af-x.com
User Manual AF-X Fireblocker Nano Series version 3.5
9
6.
Automatic detection equipment feeding the FECP shall be by any method or device and shall be capable of
early detection and indication of heat, flame, smoke, combustible vapours, or any abnormal condition in the
hazard that is likely to produce fire, and meets the minimum requirements in the table below:
Type of application
Type of protection
Number of criteria
Detection of
Activation criteria
Room
Total flooding
3
CO, heat and smoke
2 detectors or 2 groups
Object / cabinet
Total flooding
2
CO and heat
Specific
See protocol
See protocol
See protocol
Note: Specific conditions and / or special applications shall always be verified by AF-X systems.
There are many fire extinguishing systems on the market. When selecting a FECP it is important to consider the
local rules and regulation concerning fire extinguishing systems in general and aerosol fire extinguishing systems
in particular.
Note that the extinguishing generators are activated by a heating element with 1.3 – 3.2 Ohm resistance.
The required electric activation voltage is 6 -36 Volt DC; 1.0 Ampère (= 1000 mA) for 1-2 seconds.
5.2
AF-X MCU (Monitoring & Control Unit)
The extinguishing generators are activated by a heating element with 1.3 – 3.2 Ohm resistance. The required electric
activation voltage is 6 -36 Volt DC; 1.0 Ampère (= 1000 mA) for 1-2 seconds.
In order to assure that the activation power of the Fire Extinguishing Control Panel FECP is distributed correctly
throughout the multiple generator system, the monitoring and control units were developed.
The AF-X MCU provides connection from the Kentec XT, AX-T or the Honeywell Notifier RP1r-SURPA fire control
panel to the AF-X Fireblockers.
•
A maximum of 18 AF-X MCU’s can be connected to each extinguishing line,
•
A maximum of 2 AF-X Fireblockers on each MCU.
5.4
AF-X Fireblocker design parameters
For the correct design of an AF-X Fireblocker system, the following steps must be taken:
1.
Calculation of the required quantity and type of extinguishing generators;
2.
Projection of the extinguishing generators correct position in the area to be protected;
3.
Determination of the extinguishing generators correct discharge direction.
5.5
AF-X Fireblocker Aerosol behaviour
For a correct design of an AF-X Fireblocker extinguishing system, it is important to consider several properties and
behavioural aspects of the AF-X Fireblocker Aerosol in the area to be protected.
The aerosol formed by the AF-X Fireblocker leaves the generator at some speed. This can be observed as a
spreading transparent-white cloud. The temperature of this cloud, consisting of extremely small nanoparticles, is
usually somewhat higher than its surroundings. So, initially the aerosol cloud and the temperature in the
enclosure will therefore seem to be slowly rising.
The particles are so small that gravity hardly affects them, and they can disperse in the air rapidly in a balanced
fashion. The currents and whirls present in the area, either caused by fire or just by the active equipment, make
that the tiny aerosol particles actively move through the area. The AF-X Fireblocker Aerosol has been designed to
make maximum use of these currents. By consequence, the convection currents caused by the seat of the fire
draw the particles into that seat. Even when the fire is just in its very early stages of development.
