Bosch Security Systems | 2006-06 | 9922 141 10377 en
Plena Voice Alarm System | Installation and User Instructions | Introduction en | 21
3.4 Hotel
3.4.1 Introduction
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 IEC60849 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.
3.4.2 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
3.4.3 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.
3.4.4 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.
3.4.5 Layout
See figure 3.4, table 3.7 and table 3.8
table 3.7: Zones
Zone Description Power
Z1 Bar 3 x 6 W
Z2 Restaurant 6 x 6 W
Z3 Lobby 2 x 6 W
Z4 Office 1 x 6 W
Z5 Kitchens 2 x 6 W
Z6 Parking garage 3 x 10 W
Z7-12 Floors 1 to 6 78 x 6 W
Tot al 582 W
table 3.8: Units
Unit Description No.
LBB1990/00 Controller 1 x
LBB1992/00 Router 1 x
LBB1996/00 Remote control 1 x
LBB1997/00 Remote control extension 1 x
LBB1956/00 Call station 2 x
LBB1957/00 Call station keypad 3 x
LBB1935/00 Power Amplifier (240 W) 1x
LBB1938/00 Power Amplifier (480 W) 2 x
PLN-DVDT DVD Tuner 1x
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