Installation Instruction VARIODYN
®
D1 System
4
FB 798663.GB0 / 05.19
1
General /Application
In line with the applicable standards, the following systems must all consist of components that satisfy the
standards of the EN 54 series: a sound system for emergency purposes (SEP), as per EN 50849; a voice alarm
system (VAS), as per DIN VDE 0833-4, and, in Austria, a sound system for emergency purposes (SEP), as per
TRVB (technical fire prevention guideline) 158 S.
It must be ensured that these components interact together in a manner appropriate to the function. Devices for
use in demanding ambient conditions, such as cold stores, galvanising plants or corrosive atmospheres, must be
suitable for this particular application or must be adapted using suitable protective measures.
Designation of the system depending on the region of use
Depending on the location of use (country, applicable standard), the system is designated as e.g.:
D
Voice alarm systems
according to DIN VDE 0833-4 and EN 54
or Emergency audio system
according to EN 50849
A
Emergency audio warning system
according to TRVB 158 S
In the interests of readability, only the term “voice alarm system” (VAS) is used in the following
chapters.
A voice alarm system can be used for triggering and generating alarms anywhere that may pose a hazard to
people. Voice alarms are particularly effective in buildings and rooms frequented by visitors or other people who
are not trained in how to respond in an emergency or where visual alarms cannot always be clearly recognised.
An especially high level of risk exists in the case of people who are dependent on external help in an emergency,
e.g. when evacuation of the building is necessary. This may include people who are ill, the elderly, and children.
The voice alarm system is mainly used in combination with a fire alarm control panel (FACP) for emitting alarms.
In practice, the voice alarm system is also used for purposes outside of this area of application. Typical examples
of this include spoken messages such as those used in advertising or for paging people in airports,
announcements at train stations, or playing background music.
Different requirements are placed on the voice alarm system depending on this combined use as an alarm and
as a general public address system. For example, external loudspeakers which can generate a high sound
pressure level are required for voice alarms. At the same time, however, it should be possible to transmit a high-
quality music signal in other areas and, ideally, to control the volume for individual areas as well. The requirements
related to safety, comfort, and flexibility demand a high level of expertise in the planning and implementation of a
system as well as excellent knowledge of the individual product components.
The VARIODYN
®
D1 System is assembled at the factory as a modular expandable version with various
components in accordance with the specific building requirements. Special solutions can thus be implemented
economically and effectively for buildings of different sizes and for various alarm purposes.
The VARIODYN
®
D1 System is a voice alarm system that includes an integrated energy supply according to
EN 54-4 and outputs for connecting loudspeakers according to EN 54-24.
Activation of the VAS can take place manually and/or via an FAS according to EN 54-2 incl. an interface according
to VDE 0833-4.
