Bosch Plena Power Amplifier, Руководство по эксплуатации, Страница: 40 / 192

Hotel
Smaller hotels are typical examples of applications with relatively few zones, each with a
medium to high output power requirement. The priorities are speech intelligibility and
compliance with IEC 60849 standard. In addition to mandatory voice alarm functionality for
evacuating guests and staff, an EVAC system for a hotel should also include BGM in the
restaurant, bar and lobby, plus public address functionality for general paging. To ensure that
all guests hear an emergency message, the power output per zone is relatively high. Outside
areas such as car parking garages, require weatherproof horn loudspeakers.
Summary of requirements
–
Typically 10 to 20 zones in small hotels
– Speech intelligibility is the main priority
– High power requirement (multiple loudspeakers) per floor
– Fireman’s panel by fire exit
– Call stations in reception and office
– Additional public address functions for paging guests
– BGM in lobby and restaurant
Solution for a 12-zone system
A Plena Voice Alarm System Controller handles routing to up to 6 zones, the additional 6
zones require a router. Both the reception and office are equipped with call stations plus
keypads for individually addressing zones, while a fireman’s panel (with overall priority) is
built‑in by the emergency exit. The Plena Voice Alarm System is a two‑channel system, so BGM
can still be provided in zones not receiving a call.
Power requirements
The system controller features a built-in 240 W power amplifier, able to drive up to 40
loudspeakers (6 W). Additional Plena Power Amplifiers are incorporated to provide additional
power, two‑channel operation and spare amplification. To facilitate phased evacuation from
different floors of the hotel, guest areas are divided into separate zones, each fitted with 13
ceiling loudspeakers in the corridors. The bar uses cabinet loudspeakers, while the parking
garage uses weatherproof horn loudspeakers.
3.12.4
40 en | System overview Plena
2013.07 | V2.0 | Installation and Operation manual Bosch Security Systems B.V.