916 PACIFIC AVE MRI BUILDING 2024-04-15

Application EST3 zoned amplifier configurations offer improved reliability and ► performance.Configuration provides improved survivability in the Du l - l E..I Distributed event of wiring faults that.result in a loss of signaling. In the exam- Central k zoned __ Amplifiers ple shown in the diagram,a fault on the system using a central II, backed-up amplifier disables multiple signaVpage circuits,and the standby amplifier is not able to bypass the fault.With EST3,the same fault removes the Audio Source Unit riser. = - - Page Central Zoned - -- Alert Amplifier Amplifiers Evacuation Auxiliary Short on Riser - Short on Riser Stairwell disables all disables signal Alert Elevator circuits source Evacuation Environmental StandbyAmplfiers Emergency are local in nodes Standby Evacuation ELEVATOR:"A fire alarm has been reported in the building.The Tone at each Amplifier elevator is being return to the ground floor for emergency use. Please evacuate the buedilding." STAIRWELLS:"Please remain calm and walk down the stairs to evacuate the building in a safe manner." Because all EST3 zoned amplifiers have an integrated backup In addition to robust paging, EST3 provides UL-listed Mass 1000 Hz temporal tone generator,the locally-generated alarm Notification/Emergency Communication(MNEC),which overrides tones notify occupants of a hazard-even with the primary riser fire alarm functions.This capability allows emergency response out of commission.The backup tone also operates if the ASU commanders to advise building occupants of the safest action to or the audio distribution system fails.To further enhance system take while an emergency is unfolding. Occupants can be in- survivability,a single standby amplifier can backup any zoned structed to leave, relocate,or seek immediate shelter, depending amplifier in the same cabinet. on the situation.This provides the flexibility for communications to mesh with the facility's risk analysis needs-without the risk of an Zoned amplifiers can be housed in remote cabinets close to the unexpected fire alarm or general evacuation signal interfering with speakers.This minimizes the voltage drop between the amplifier established emergency response protocols. and the load,and permits the use of a smaller wire size than is possible with centrally-located amplification systems. EST3 easily outperforms banked audio systems with its ability to Sleeping Areas simultaneously deliver up to eight different signals.When using 3-ZA Series Amplifiers are part of an end-to-end low frequency so- centrally-banked amplifiers,paging and alert channels typically lution listed to UL 464 and UL 864. It is approved for code-com- share a common amplifier. Consequently,when paging,the alert pliant 520 Hz signaling in sleeping areas when used in conjunction signal goes silent in all alerted areas when a Page is issued.At with: the end of the Page,the alert signal resumes in the alert area, • an EST3 control panel which could cause confusion because occupants did not receive • a factory-supplied 520 Hz audio file the page message and do not know why the Page stopped and restarted. • one or more Genesis High Fidelity speakers(G4HF or GCHF series) With EST3,simultaneous page,alert,and evacuation signal capa- Consult the EST3 System Compatibility List for details. bility is engineered into the system.With eight channels to choose - from,dedicated messages can be delivered to stairwells,elevator - cabs,etc.while alert,evacuation,and page instructions are simul- taneously being sent to the rest of the building.The eight audio Engineering Specification channels allow messages to be automatically routed,and provide The audio system shall provide eight simultaneous and distinct specific instructions based on the alarm's location, audio channels.These shall consist of a minimum of: Local Page, For example,with an alarm on Floor Eight,the following automatic Emergency Communication, Multiple Evacuation,Alert,Auxiliary, message instructions could be given concurrently. Note:A Page and General Signaling.Channels shall support hierarchical opera- could also be sent to any other location in the building-without tion and be controllable from system programming.The audio interrupting any of the messages below. system also provides Elevator,Stairwell and Auxiliary signaling. Systems that cause signaling devices to go silent while performing FLOOR 9 HEARS: "A fire alarm has been reported on the floor any signaling functions will not be accepted. below. Please evacuate using the stairwell." The audio system zoned amplifiers must be able to operate 25 FLOOR 8 HEARS:"A fire alarm has been reported on this floor. ViRms or 70 Vrm,,s speakers.The amplifier output must be power Please evacuate using the stairwell." limited,and wired in a<Class A><Class B>configuration.The OTHER FLOORS HEAR:"An emergency has been reported on amplifiers shall provide an integral backup 1000 KHz temporal floor 8. Please remain in the building and await further instruc- tone generator which shall operate in the event signal primary tions." audio signals are lost and the amplifier is instructed to broadcast alarm information. It shall be possible to backup multiple zoned amplifiers with a common backup amplifier. E8co /�t� �7 Page 2 of 4 .z r r= _. ? 5010 0051 Not to h ,.tse t -s-lai<a i,-< p€.r o oo. Issue 1.3