Swimming Pool - Bosch Plena Operating Manual

Plena
3.12.2

Swimming pool

Swimming pools and other indoor sports and recreational facilities are typical examples of
smaller applications with few zones. The main priorities are excellent speech intelligibility and
compliance with IEC 60849 standard (and its national equivalents), although music in different
areas is optional. An EVAC system for a swimming pool requires voice alarm functionality with
public address functionality for regular announcements and background music (optional). To
ensure that all visitors in the relatively noisy pool area hear emergency messages, the power
output for that zone is relatively high. Other areas, such as the changing rooms and offices,
have lower power requirements.
Summary of requirements
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Solution for a 5-zone system
The Plena Voice Alarm System controller handles routing to up to 6 zones, so no additional
routers are required. The office/reception is equipped with a call station plus keypad 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 has a built-in 240 W power amplifier, making it possible to drive up to
40 loudspeakers with a power handling capacity of 6 W each. The pool area requires high
power music loudspeakers qualified for use in a high humidity atmosphere. The snack bar
uses cabinet loudspeakers for music reproduction. The zones are defined as indicated in the
table. An additional Plena Power Amplifier is used for two-channel operation and as a spare
amplifier.
Bosch Security Systems B.V.
Typically up to 6 zones
Speech intelligibility is the main priority
High power requirement in the noisy pool area
Fireman's panel by fire exit
Call station in office/reception
Additional public address functions for announcements
BGM
Installation and Operation manual
System overview | en 35
2013.07 | V2.0 |