Smoke detector in every elevator lobby. Installation wiring to such detectors are monitored by the building fire alarm system and if the activation of such detectors initiates a supervisory signal at a constantly attended.
31 Elevator Shunt Trip Wiring Diagram Wiring Diagram List
Shunt trip fire alarm wiring diagram. 3 941 where heat detectors are used to shut down elevator power prior to sprinkler operation the detector shall have both a lower temperature rating and a higher. In this way the risk of electrocution or control malfunctioning resulting from the operation of the overhead water sprinkler is eliminated. Elevator equipment elevator machine room elevator recall waterflow backflow piv and osy sprinkler waterflow flapper. Elevator equipment elevator machine room elevator recall waterflow backflow piv and osy sprinkler waterflow flapper. Elevator shunt trip fire alarm requirements here are the requirements for heat detector placement monitoring of power and wiring diagram from 1999 nfpa 72. This diagram can help clear up the wiring in of fire alarm modules and relays.
This diagram can help clear up the wiring in of fire alarm modules and relays. Every elevator will need the following fire alarm devices. Here is some images of shunt coils and after that we will discuss the shunt trip breaker wiring diagram with image symbol diagram. 3drawout circuit breakers should be levered racked out to the disconnect position. Where elevator hoistways or. Now lets how to wire shunt trip device accessory its too simple as i shown in above shunt trip device images that a shunt coil have only to wires just like a magnetic contactor or magnetic relay coil.
Using an addressable relay module frm 1 to operate the shunt trip breaker directly. When any heat detector is activated primary elevator power shall be shut down via a shunt trip breaker supplying the elevator equipment. Whereas designated and alternate elevator recall captures and sends the elevator cab to safe floors elevator shunt trip works a little different. Fire alarm and sprinklers ieee atlanta chapter may 15 2006. Elevator shunt trip wiring can be confusing as it is required to be outside the elevator machine room and monitored for the presence of operating voltage. Using an addressable relay module frm 1 to operate the shunt trip breaker directly.
On all of the fire systems i have wired we put. Elevator controls play a huge role in fire alarm system emergency functions. Elevator shunt trip is a function that involves shunting the breaker that controls the elevator equipment prior to the release of the automatic sprinkler systems. This diagram can help clear up the wiring in of fire alarm modules and relays. Shunt trip and overcurrent trip switch warning 1only qualified electrical personnel should be permitted to work on the equipment. The shunt trip power must be 120vac and must be supervised by the fire alarm system.
2always de energize primary and secondary circuits if a circuit breaker cannot be removed to a safe work location. In the case of elevators a shunt trip breaker is installed so that the fire alarm can send a signal to the shunt trip breaker to interrupt the flow of electricity to the elevator.
Gallery of Shunt Trip Fire Alarm Wiring Diagram
