Installation manual
Connections
29
Chapter 7
Connections
7.1
Note to the Installer regarding wiring and connection compliancy
7.1.1
Two wire connection
For a system that is EN54 compliant, no more than 32 sensors can be connected when this type of wiring is
used.
7.1.2
Four wire connection
For a system that is EN54 compliant, an insulation module must be installed for each group of 32 detectors
(refer to
Appendix A
,
Appendix B
and
Appendix C
for information regarding the devices with built-in
isolators).
Fire code guidelines
Danger:
If you are using a 2 wire connection, no more than 32 detectors can be connected to the
loop.
If you are using a 4 wire connection, T junctions are prohibited, that is unless the maximum
number of devices that risk isolation during any type loop fault does not exceed 32.
If the system loop devices do not have built-in isolators, you must install an isolator for each
group of 32 detectors. Refer to
Appendix A
,
Appendix B
and
Appendix C
for further details.
All circuits should be wired using the local country Fire Code compliant method.
7.2
About the circuitry
The fire alarm system circuitry is critical to the safety and well being of the building occupants. It is
considered an essential communication path during evacuation or relocation of persons during a fire or
emergency situation. During such an event, it is critical for fire safety equipment such as fire alarm
signaling equipment to remain operational for a specified amount of time. Therefore, all circuits are to be
wired using the local country Fire Code compliant method.
7.2.1
Guidelines
• The fire alarm system circuitry must not be commingled without proper separation, and must be kept
separate from all other wiring.
• Junction boxes are required at splice points. All Junction boxes must be installed using the local country
Fire Code compliant method.
• Any wires/cables inside the SmartLoop enclosure must be secured to the cable hooks on the back box by
means of plastic cable ties or similar fittings.
• The mains power supply cable must enter the control panel enclosure through the appropriate cable
entry and must not cross other conductors. The mains power supply cable must be secured to the cable
hook on the back box by means of a plastic cable tie.
7.3
Loop Connections
The loops accommodate a vast array of fire system devices (detectors, manual callpoints, fire buttons,
Input and Output modules, etc.).
For a detailed description of the devices the loop accepts, refer to
Appendix A
,
Appendix B
and
Appendix C
.
Due to electrical incompatibility, different brand devices (i.e. devices using different protocols) cannot co-
exist on the same loop. However, the loops can be programmed separately in such way as to allow the
system to manage different brand devices on different loops.
Содержание SmartLoop Series
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