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Installation of automatic fire alarm systems

2017-04-28View Original

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1. If the wiring for fire temperature and smoke detectors as well as the manual alarm buttons is on the same circuit and connected to the bus, can the bus be arranged in a tree structure, with branches along the way, or must it remain in a linear format, connecting one device after another? 2. Does the module box require a power supply? 3. How many power supplies can be connected in parallel to control the air valve?
Reply #22017-04-28
1: The signal wires on the same circuit can branch off. 2: The module needs to provide 24V, mainly for active devices such as relays
Reply #32017-04-28
Specific provisions are outlined in the 2014 Building Fire Protection Code
Reply #42017-04-28
Can it be connected in this way? Does every branch need to have a termination resistor?
Reply #52017-04-28
No terminal resistor is needed; your diagram is correct

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