FIRE ALARM SYSTEM
Overview
To ensure the quality of the system and be proactive in the operation, maintenance and additional equipment replacement, it is necessary to meet the following minimum requirements:
– Equipment must meet Vietnamese standard TCVN5738: 2000 and standard NFPA72 or EN54, certified quality UL, FM or VdS. The ISO9001 quality management standard applies to Engineering & Manufacturing.
– Products from non-factory suppliers are not accepted but only commercially purchased (OEM). Products can only be used by manufacturers with ISO 9001 certificate of quality management and products have been widely used in Vietnam for more than 10 years and must have a commitment to provide a minimum replacement product. 10 years since put into use.
The manufacturer must have a representative office or factory in Vietnam.
– The device ensures the initiative in replacing and repairing when necessary with the keystrokes available on the control cabinet without any tools other than the computer and the software provided with the device. When it is necessary to replace a device on the circuit, there is no need to interfere at any point in the central cabinet as well as monitoring graphics software.
– To meet the characteristics of the building’s operation, which frequently changes in service leasing areas during the operation. The central cabinet of the alarm system is equipped with a full programmable keyboard such as a computer keyboard (QWERTY) so that during the operation the system operator can actively program and add some devices, change the area name… to meet the actual requirement. When programming, changes can be done directly from the keyboard on the control cabinet without using a programming computer or any other supporting tools.
The detectors also have the function of automatically adjusting the sensitivity according to the installation environment conditions, with a frequently smoky environment, or high temperature, the detector’s sensitivity will automatically adjust to increase the threshold to avoid alarm. fake fire. For clean areas, the detector’s sensitivity will automatically reduce the threshold to meet the requirements of early fire alarm.
Communication from sensor heads to the center cabinet must be based on the same communication technology. From the central cabinet can check the current information on each detector, allowing to determine the current smoke level in the area (for the areas with smoke sensors), or the temperature in the area (with zones). temperature sensor head mounting area).
– According to the NFPA, or EN standard, the response time to the sensor heads from when detecting the fire alarm threshold until transmitting information to the cabinet to generate alarm information must be <3s. A larger number of devices in the loop lead to longer response times. Sensor heads and central control cabinets must use advanced communication technology with high speed on the circuit of fire alarm devices, allowing the maximum number of devices per circuit to be used, reducing the number of circuits. equipment loop, reducing wiring and construction costs.
The detectors and modules must use advanced technology, allowing to determine the address directly on each device by the decimal rotation switch with the numbers 0-9. During use, it is possible to easily check the device at the respective addresses. When it is necessary to replace the sensor head, just use the corresponding type, rotate the address like the old sensor head without interfering with the system software.
– The addressable devices include: heat smoke detector, fire alarm button, functional modules must be the type with LED indicating the status to be able to observe the status of the device remotely:
Device in fire alarm state: LED is lit in red.
Device works normally: LED blinks green.
Device fault: LED is off or light is green continuously.
For the system to operate stably for a long and long term, the equipment must meet the following basic requirements:
The degree of suitability for the tropical environment is high.
Allowable device loop length is large.
