Bosch PRAESENSA User manual

PRAESENSA
Public Address and Voice Alarm System
en Underwriters Laboratories Listing Document (ULLD)

PRAESENSA Table of contents | en 3
Bosch Security Systems B.V. Underwriters Laboratories Listing Document (ULLD) 2021.12.21 | V0.15b | F.01U.402.882
Table of contents
1About 7
1.1 Nomenclature 7
1.2 System limitations 7
1.3 Installation precautions 8
1.4 Software downloads and installation 10
1.5 Standards 10
1.6 Supplemental documentation 11
1.7 UL 2572 Compliance 11
1.8 Cautions and Warnings 12
1.9 Copyright notice 12
1.10 Trademarks 12
1.11 Notice of liability 12
1.12 Document history 12
2PRAESENSA product overview 14
3Installation wiring 16
3.1 Wiring procedures and instructions 16
3.1.1 Location of racks and enclosures 16
3.1.2 Equipment racks and cabinets 16
3.1.3 Mounting the 19"-rack devices 17
3.1.4 Field wire cable requirements 19
3.1.5 Security and data protection 23
3.2 Battery calculation 24
3.2.1 Topology 24
3.2.2 Operating conditions 24
3.2.3 Power consumption 26
3.2.4 Accurate battery size calculation 26
3.3 System controller | PRA-SCL | PRA-SCM | PRA-SCS 28
3.3.1 Connections 28
3.3.2 Functional diagram 29
3.3.3 Parts included 29
3.3.4 Power supply 30
3.3.5 Ethernet network 31
3.3.6 Technical data 32
3.4 Amplifier, 600W 4-channel | PRA-AD604 34
3.4.1 Connections 34
3.4.2 Functional diagram 35
3.4.3 Parts included 35
3.4.4 Safety ground 36
3.4.5 Power supply 37
3.4.6 Lifeline 38
3.4.7 Amplifier outputs 39
3.4.8 Ethernet network 43
3.4.9 Technical data 44
3.5 Amplifier, 600W 8-channel | PRA-AD608 46
3.5.1 Connections 46
3.5.2 Functional diagram 47
3.5.3 Parts included 47
3.5.4 Safety ground 48

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3.5.5 Power supply 49
3.5.6 Lifeline 50
3.5.7 Amplifier outputs 51
3.5.8 Ethernet network 54
3.5.9 Technical data 55
3.6 End-of-line device | PRA-EOL-US 57
3.6.1 Connections 57
3.6.2 Functional diagram 57
3.6.3 Parts included 58
3.6.4 Mounting 58
3.6.5 Wiring 62
3.6.6 Technical data 63
3.7 Multifunction power supply, large | PRA-MPS3 64
3.7.1 Connections 64
3.7.2 Functional diagram 66
3.7.3 Parts included 66
3.7.4 Battery and fuse 67
3.7.5 Mains power connection 71
3.7.6 Amplifier power supply 72
3.7.7 Lifeline 73
3.7.8 System controller power supply 74
3.7.9 Power over Ethernet 75
3.7.10 Ethernet network 76
3.7.11 Control inputs 78
3.7.12 Control outputs 79
3.7.13 Technical data 80
3.8 LCD call station | PRA-CSLD, PRA-CSLW 83
3.8.1 Connections 83
3.8.2 Functional diagram 84
3.8.3 Parts included 85
3.8.4 Interconnection call station / extension 85
3.8.5 Power over Ethernet 86
3.8.6 Line input 87
3.8.7 Technical data 87
3.9 Call station extension | PRA-CSE 91
3.9.1 Connections 91
3.9.2 Functional diagram 92
3.9.3 Parts included 92
3.9.4 Extension connected to a call station 93
3.9.5 Labeling 94
3.9.6 Mounting a button cap 95
3.9.7 Technical data 98
3.10 Ethernet switch | PRA-ES8P2S 99
3.10.1 Connections 99
3.10.2 Functional diagram 101
3.10.3 Parts included 101
3.10.4 Power supply connection 101
3.10.5 Fault relay connection 101
3.10.6 Technical data 102

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Bosch Security Systems B.V. Underwriters Laboratories Listing Document (ULLD) 2021.12.21 | V0.15b | F.01U.402.882
3.11 Fiber transceiver | PRA-SFPLX, PRA-SFPSX 104
3.11.1 Connections 104
3.11.2 Functional diagram 105
3.11.3 Parts included 105
3.11.4 Transceiver 105
3.11.5 Fiber cable 105
3.11.6 Technical data 106
3.12 First responder panel | PRA-FRPx-US, PRA-FRPx-USNY 108
3.12.1 Connections 109
3.12.2 Functional diagram 110
3.12.3 Parts included 110
3.12.4 Installation instructions 110
3.12.5 Surface mount instructions 112
3.12.6 Semi-Flush mount instructions 115
3.12.7 Power over Ethernet connections 119
3.12.8 Technical data 121
4Operation 123
5Functionality 124
5.1 System controller | PRA-SCL 124
5.1.1 Functions 124
5.2 Amplifier, 600W 4/8-channel | PRA-AD604 | PRA-AD608 124
5.2.1 Functions 124
5.3 End-of-line device | PRA-EOL-US 125
5.3.1 Functions 125
5.4 Multifunction power supply, large | PRA-MPS3 125
5.4.1 Functions 125
5.5 LCD call station | PRA-CSLD, PRA-CSLW 126
5.5.1 Functions 126
5.6 Call station extension | PRA-CSE 127
5.6.1 Functions 127
5.7 Ethernet switch | PRA-ES8P2S 127
5.7.1 Functions 127
5.8 Fiber transceiver | PRA-SFPLX, PRA-SFPSX 128
5.8.1 Functions 128
5.9 First responder panel | PRA-FRPx-US 128
5.9.1 Functions 128
6Programming options 130
6.1 Check/upload device firmware 130
6.2 Ethernet adapter settings 130
6.3 Logon the application 130
6.4 Programming settings 132
6.4.1 User accounts 132
6.4.2 System composition 133
6.4.3 Device options 133
6.4.4 System options 136
6.4.5 Zone definitions 137
6.4.6 Call definitions 137
6.4.7 Action definitions 138
6.4.8 Audio processing 139

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6.4.9 Security 140
7Testing/Maintenance 141
7.1 Preventive maintenance 141
7.2 Corrective maintenance 142
8Compatibilities 143
8.1 NAC Appliances 143
8.2 Loudspeakers 143
8.3 FACP and Annunciators 144
9System Configuration 145
9.1 System with ACU 146
9.2 System with ACU and LOC 148
9.3 Multi building system 151
9.4 Interconnection with B9512G or B8512G panel 153
9.5 Interconnection with B9512G or B8512G panel with amber and clear strobes 155
9.6 Generic interfacing with fire panel 157
10 System Power/Size 159
11 Operating instructions 160

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Bosch Security Systems B.V. Underwriters Laboratories Listing Document (ULLD) 2021.12.21 | V0.15b | F.01U.402.882
1 About
This Underwriter’s Laboratory Listing Document (ULLD) describes the design and operation of
the Bosch PRAESENSA Public Address and Voice Alarm system, including the individual
PRAESENSA devices that may be used in standalone or networked configurations.
PRAESENSA provides the following main features:
– Networked system devices using a secure IP‑infrastructure
– Multi‑channel amplifiers with effective power utilization
– Fail‑safe redundancy for highest system availability
– Call station with touch screen for optimized user experience
– Scalable and flexible system for small to large applications
i
Notice!
When PRAESENSA is installed according this ULLD, PRAESENSA is compliant with the
Standards, page 10 .
1.1 Nomenclature
Throughout this manual, a term like “fault” is used. Instead, a similar meaning/description can
be read.
Original description Similar meaning/description
Fault Trouble
1.2 System limitations
An automatic fire alarm system - typically made up of smoke detectors, heat detectors,
manual pull stations, audible warning devices, and a fire alarm control panel (FACP) with
remote notification capability - can provide early warning of a developing fire. Such a system,
however, does not assure protection against property damage or loss of life resulting from a
fire.
An emergency communication system - typically made up of an automatic fire alarm system
(as described above) and a life safety communication system that may include an autonomous
control unit (ACU), local operating console (LOC), voice communication, and other various
interoperable communication methods - can broadcast a mass notification message. Such a
system, however, does not assure protection against property damage or loss of life resulting
from a fire or life safety event.
Audible warning devices such as bells, horns, strobes, speakers and displays may not alert
people if these devices are located on the other side of closed or partly open doors or are
located on
another floor of a building. Any warning device may fail to alert people with a disability or
those who have recently consumed drugs, alcohol, or medication. Please note that:
– An emergency communication system may take priority over a fire alarm system in the
event of a life safety emergency.
– Voice messaging systems must be designed to meet intelligibility requirements as defined
by NFPA, local codes, and Authorities Having Jurisdiction (AHJ).
– Language and instructional requirements must be clearly disseminated on any local
displays.

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– Strobes can, under certain circumstances, cause seizures in people with conditions such
as epilepsy. To reduce this risk make sure strobes in the same visual area are
synchronized.
– Studies have shown that certain people, even when they hear a fire alarm signal, do not
respond to or comprehend the meaning of the signal. Audible devices, such as horns and
bells, can have different tonal patterns and frequencies. It is the property owner's
responsibility to conduct fire drills and other training exercises to make people aware of
fire alarm signals and instruct them on the proper reaction to alarm signals.
– In rare instances, the sounding of a warning device can cause temporary or permanent
hearing loss.
A life safety system will not operate without any electrical power. If AC power fails, the
system will operate from standby batteries only for a specified time and only if the batteries
have been properly
maintained and replaced regularly.
Equipment used in the system may not be technically compatible with the PRAESENSA
system. It is essential to use only equipment listed for service with your PRAESENSA system.
Telephone lines needed to transmit alarm signals from a premises to a central monitoring
station may be out of service or temporarily disabled. For added protection against telephone
line failure, backup radio transmission systems are recommended.
The most common cause of life safety system malfunction is inadequate maintenance. To
keep the entire life safety system in excellent working order, ongoing maintenance is required
per the manufacturer's recommendations, and UL and NFPA standards. At a minimum, the
requirements of NFPA72 shall be followed. Environments with large amounts of dust, dirt, or
high air velocity require more frequent maintenance. A maintenance agreement should be
arranged through the local manufacturer's representative. Maintenance should be scheduled
as required by National and/or local fire codes and should be performed by authorized
professional life safety system installers only. Adequate written records of all inspections
should be kept.
1.3 Installation precautions
Adherence to the following will aid in problem-free installation with long-term reliability:
WARNING - Several different sources of power can be connected to the PRAESENSA system.
Disconnect all sources of power before servicing. Control unit and associated equipment may
be damaged by removing and/or inserting cards, modules, or interconnecting cables while the
unit is energized. Do not attempt to install, service, or operate this unit until manuals are read
and understood.
CAUTION - System Re-acceptance Test after Software Changes: To ensure proper system
operation, this product must be tested in accordance with NFPA 72 after any programming
operation or change in site-specific software. Re-acceptance testing is required after any
change, addition or deletion of system components, or after any modification, repair or
adjustment to system hardware or wiring. All components, circuits, system operations, or
software functions known to be affected by a change must be 100% tested. In addition, to

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Bosch Security Systems B.V. Underwriters Laboratories Listing Document (ULLD) 2021.12.21 | V0.15b | F.01U.402.882
ensure that other operations are not inadvertently affected, at least 10% of initiating devices
that are not directly affected by the change, up to a maximum of 50 devices, must also be
tested and proper system operation verified.
Verify that wire sizes are adequate for all initiating and indicating device loops. Most devices
cannot tolerate more than a 10% I.R. drop from the specified device voltage.
Like all solid state electronic devices, this system may operate erratically or can be damaged
when subjected to lightning induced transients. Although no system is completely immune
from lightning transients and interference, proper grounding will reduce susceptibility.
Overhead or outside aerial wiring is not recommended, due to an increased susceptibility to
nearby lightning strikes. Consult with the Technical Services Department if any problems are
anticipated or encountered.
Disconnect AC power and batteries prior to removing or inserting circuit boards. Failure to
do so can damage circuits.
Remove all electronic assemblies prior to any drilling, filing, reaming, or punching of the
enclosure or rack. When possible, make all cable entries from the sides or rear. Before making
modifications, verify that they will not interfere with battery, transformer, or printed circuit
board location.
Do not tighten screw terminals more than 9 in-lbs. Over-tightening may damage threads,
resulting in reduced terminal contact pressure and difficulty with screw terminal removal.
This system contains static-sensitive components. Always ground yourself with a proper
wrist strap before handling any circuits so that static charges are removed from the body. Use
static suppressive packaging to protect electronic assemblies removed from the unit.
Follow the instructions in the installation, operating, and programming manuals. These
instructions must be followed to avoid damage to the PRAESENSA devices and associated
equipment. FACP operation and reliability depend upon proper installation.
FCC Warning
WARNING: This equipment generates, uses, and can radiate radio frequency energy and if not
installed and used in accordance with the instruction manual may cause interference to radio
communications. It has been tested and found to comply with the limits for class A computing
devices pursuant to Subpart B of Part15 of FCC Rules, which is designed to provide
reasonable protection against such interference when devices are operated in a commercial
environment. Operation of this equipment in a residential area is likely to cause interference,
in which case the user will be required to correct the interference at his or her own expense.
Canadian Requirements
This digital apparatus does not exceed the ClassA limits for radiation noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.

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2021.12.21 | V0.15b | F.01U.402.882 Underwriters Laboratories Listing Document (ULLD) Bosch Security Systems B.V.
1.4 Software downloads and installation
In order to supply the latest features and functionality in fire alarm and life safety technology
to our customers, we make frequent upgrades to the embedded software in our products. To
ensure that you are installing and programming the latest features, we strongly recommend
that you download the most current version of software for each product prior to
commissioning any system.
Contact Technical Support with any questions about software and the appropriate version for
a specific application.
UL2572 compliant software version(s)
Release date Released version Reason
2021.12 1.42 Official release
1.5 Standards
PRAESENSA complies with the following standards:
Certification Standard
Underwriters Laboratories (UL) UL2572 for Mass Notification Installations
Standard for Control Units and
Accessories for Fire Alarm Systems
UL864 10th Edition
FCC Part 15, Class A
PRAESENSA is familiar with the following standards:
Certification Standard
National Fire Alarm and Signaling
Code
NFPA 72
National Electrical Code (NEC) NFPA 70
Power Supplies for Fire Protective
Signaling Systems
UL1481
Amplifiers for Fire Protective
Systems
UL1711
Audible Signaling Devices for Fire
Alarm and Signaling Systems,
Including Accessories
UL 464
Occupational Safety and Health
Administration
OSHA 1910.165
Americans with Disabilities Act ADA

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Bosch Security Systems B.V. Underwriters Laboratories Listing Document (ULLD) 2021.12.21 | V0.15b | F.01U.402.882
1.6 Supplemental documentation
The following table provides an overview of PRAESENSA supplemental documentation.
Product Document Description and location
All
PRAESENSA
products
PRAESENSA
Installation manual
Detailed instructions for installation.
www.boschsecurity.com > PRAESENSA product
section.
All
PRAESENSA
products
PRAESENSA
Configuration manual
Detailed instructions for configuration/programming,
diagnosis and operation. www.boschsecurity.com >
PRAESENSA product section.
1.7 UL 2572 Compliance
The following PRAESENSA products have been certified to comply with the requirements in
the UL2572 standard for Mass Notification Installations:
Product Description
PRA-SCL System controller, large
PRA-SCM System controller, medium
PRA-SCS System controller, small
PRA-AD604 Amplifier, 600W 4-channel
PRA-AD608 Amplifier, 600W 8-channel
PRA‑EOL‑US End-of-line device
PRA-MPS3 Multifunction power supply, large
PRA-CSLD Desktop LCD call station
PRA-CSLW Wallmount LCD call station
PRA-CSE Call station extension
PRA-ES8P2S Ethernet switch, 8xPoE, 2xSFP
PRA-SFPSX Fiber transceiver, multimode
Not UL certified life safety applications, do not install.
PRA-SFPLX Fiber transceiver, single mode
Not UL certified life safety applications, do not install.
PRA‑FRP1‑US First responder panel for USA, 1‑extension
PRA‑FRP2‑US First responder panel for USA, 2‑extensions
PRA-FRP3-US First responder panel for USA, 3‑extensions

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1.8 Cautions and Warnings
1. Follow all installation instructions and observe the following alert signs:
Notice! Containing additional information. Usually, not observing a notice does not
result in damage to the equipment or personal injuries.
!
Caution! The equipment or the property can be damaged, or persons can be injured if
the alert is not observed.
Warning! Risk of electric shock.
1.9 Copyright notice
Unless otherwise indicated, this publication is the copyright of Bosch Security Systems B.V. All
rights are reserved.
1.10 Trademarks
Throughout this document trademark names may have been used. Rather than put a
trademark symbol in every occurrence of a trademark name, Bosch Security Systems states
that the names are used only in an editorial fashion and to the benefit of the trademark owner
with no intention of infringement of the trademark.
1.11 Notice of liability
While every effort has been taken to ensure the accuracy of this document, neither Bosch
Security Systems nor any of its official representatives shall have any liability to any person or
entity with respect to any liability, loss or damage caused or alleged to be caused directly or
indirectly by the information contained in this document.
Bosch Security Systems reserves the right to make changes to features and specifications at
any time without prior notification in the interest of ongoing product development and
improvement.
1.12 Document history
Release date Documentation version Reason
2020-10-23 V0.08 1st draft for UL.
2021-07-15 V0.11 For UL (2nd draft).
2021-09-02 V0.12 Section updated: 1.5, 1.12,
3.1.2, 3.1.3, 3.1.4, 3.4.9,
3.5.9, 3.7.4, 3.7.13, 3.11.6,
3.12.5, 3.12.8, 8.1, 8.2, 8.3,
9.4, 9.5, 9.6, 11.
2021-10-06
2021-10-13
V0.13 Section updated: 1.12, 2,
3.4.6, 3.4.7, 3.5.6, 3.5.7,
3.6.4, 3.7.5, 3.7.6, 3.7.7,
3.7.8, 3.7.13, 3.8.6, 3.9.7,
3.10.1, 3.10.6, 3.12.5, 3.12.8,
4, 5.2.1, 6.4.3, 6.4.4, 6.4.5, 7,
8.1, 8.3, 9.4, 9.5, 9.6, 11.

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Bosch Security Systems B.V. Underwriters Laboratories Listing Document (ULLD) 2021.12.21 | V0.15b | F.01U.402.882
Release date Documentation version Reason
2021-12-14 V0.14 Section updated: 1.4, 1.12, 2,
3.1.2, 3.1.3, 3.1.4, 3.2.3,
3.6.1, 3.7.13, 3.10.1, 3.12,
3.12.5, 3.12.6, 3.12.8, 6.4.2,
6.4.4, 6.4.5, 6.4.6, 6.4.7,
6.4.8, 8.1, 9.1, 9.2, 9.3, 9.4,
9.5. 9.6, 11.
2021-12-15 V0.15 Section updated: 1.12, 6.4.2,
6.4.3, 6.4.4, 6.4.5, 6.4.7,
6.4.8.
2021-12-16 V0.15a Section updated: 1.4, 1.7,
1.12.
2021-12-21 V0.15b Section updated: 1.5, 1.12,
3.12.3.

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2021.12.21 | V0.15b | F.01U.402.882 Underwriters Laboratories Listing Document (ULLD) Bosch Security Systems B.V.
2 PRAESENSA product overview
The following table gives an overview of the available PRAESENSA products.
Order
number
Product view Product name Main function
PRA-SCL
PRA-SCM
PRA-SCS
System controller, large
System controller,
medium
System controller, small
Full control of PRAESENSA
devices and audio routing.
Built‑in supervised storage
for messages and tone
files.
Open interface to third
party general signaling and
BGM applications.
PRA-AD604 Amplifier, 600W 4-
channel
Power partitioning across
four channels.
Supplying output power to
loudspeakers channels.
PRA-AD608 Amplifier, 600W 8-
channel
Power partitioning across
eight channels.
Supplying output power to
loudspeakers channels.
PRA‑EOL‑US End-of-line device Loudspeaker end‑of‑line
supervision.
Fault detection in
amplifier.
PRA-MPS3 Multifunction power
supply, large
Powering of system
controller and amplifiers.
Backup lifeline for
connected amplifiers.
General purpose control
inputs and outputs.
12V battery backup.
PRA-CSLD Desktop LCD call station Producing live, and/or
recorded messages,
announcements/calls.
Used in combination with
at least one PRA-CSE for
loudspeaker zone and
actions selection.

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Order
number
Product view Product name Main function
PRA-CSLW Wallmount LCD call
station
Producing live, and/or
recorded messages,
announcements/calls.
Used in combination with
at least one PRA-CSE for
loudspeaker zone and
actions selection.
PRA-CSE Call station extension Loudspeaker zone and
actions selection. Used in
combination with PRA-
CSLD and PRA-CSLW.
PRA-ES8P2S Ethernet switch 10 port Ethernet switch
with PoE and SFP.
PRA-SFPSX
PRA-SFPLX
Fiber transceivers (SX) For multi mode fibers,
covering distances up to
550m
(LX) For single mode
fibers, covering distances
up to 10km.
PRA‑FRP1‑US
PRA‑FRP2‑US
PRA-FRP3-US
First responder panel
USA, 1‑extension
First responder panel
USA, 2‑extensions
First responder panel
USA, 3‑extensions
For emergency control of
live, and/or recorded
messages,
announcements/calls,
loudspeaker zone and
actions selection.

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3 Installation wiring
3.1 Wiring procedures and instructions
!
Caution!
All work activities necessary for the installation, connection and commissioning are to be
carried out by electrically skilled persons only.
i
Notice!
UL notifications
For proper supervision, do not loop wire under terminals. Break the wire run to provide
supervision of connections.
3.1.1 Location of racks and enclosures
In order to ensure that the standards compliance of PRAESENSA is not compromised, the
PRAESENSA devices, the interconnections to the Fire Detection System, network
infrastructure, loudspeakers and loudspeaker wiring must be installed in accordance with the
provisions of applicable standards and the directions provided in this Bosch PRAESENSA
ULLD.
i
Notice!
The installation document of the fire product shall specify that all wiring, including that to the
non-fire alarm equipment, shall be installed in accordance with the requirements of the
National Fire Alarm and Signaling Code, NFPA 72.
Access level
– All PRAESENSA devices must be installed at a physical security level 1 according to the
UL2572 by means of installation in a lockable rack as described in Mounting the 19"-rack
devices, page 17 or in the lockable housing of the first responder panel (see First
responder panel | PRA-FRPx-US, PRA-FRPx-USNY, page 108 ).
– For PRAESENSA call stations configured for ancillary functionality and priority and not
intended for emergency control, access level 0 suffices.
3.1.2 Equipment racks and cabinets
The following PRAESENSA 19” devices must be installed in a UL50‑listed Lowell rack including
a fully vented steel front and rear door, required for ventilation and Physical Access Control
level1. See Mounting the 19"-rack devices, page 17 .
– PRA-SCx
– PRA-AD604
– PRA-AD608
– PRA-MPS3
– PRA-ES8P2S
– PRA-SFPSX
– PRA-SFPLX
– R1002ULADA
– RE2
– RE2R
When strobes are required an Altronix R1002ULADA - Rack Mountable NAC Power Extender
and RE2 - Rack Mount Battery Enclosure can be installed in the same UL50‑listed Lowell rack.

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When a combination of clear strobes for Fire Alarm and amber strobes for MNS are required,
at least two separate R1002ULADA must be installed.
See also System Configuration, page 145 , Interconnection with fire system with amber and
clear strobes.
First responder panel
The PRA-CSLD, PRA-CSLW and PRA-CSE with Physical Access Control level 0 can only be used
for ancillary functionality.
For emergency control of the PRAESENSA system the First responder panel for USA
(PRA‑FRPx‑US) can be used. The lockable door of this device ensures Physical Access Control
level 1. See First responder panel | PRA-FRPx-US, PRA-FRPx-USNY, page 108 .).
End‑of‑Line board
The End‑of‑Line board (PRA‑EOL‑US) must be installed in a UL‑listed junction box to ensure
Physical Access level1. See Mounting, page 58 .
3.1.3 Mounting the 19"-rack devices
– Only use UL50‑listed Lowell 19”‑racks and make sure that each rack is of suitable quality
to support the weight of the devices.
– Only UL‑listed installation materials are allowed inside the Lowell 19”‑rack.
– The PRAESENSA equipment must be installed in the following order inside the Lowell
19”‑rack for UL864/UL2572 compliancy:
– Amplifiers (top)
– Multifunction power supplies
– NAC extender
– (redundant) System controller
– Switch
– Batteries (bottom)
Batteries can also be placed on the following listed shelves when more space for batteries is
required:
Chatsworth
– 14072‑119
– 14072‑219
– 14072‑719
!
Caution!
For stability, secure rack in appropriate way.

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– Mounting brackets are used to mount the device in 19”‑equipment racks.

PRAESENSA Installation wiring | en 19
Bosch Security Systems B.V. Underwriters Laboratories Listing Document (ULLD) 2021.12.21 | V0.15b | F.01U.402.882
– Ventilation inlets should be kept free of obstacles and dust. Fans are controlling the
airflow based on internal temperature. Airflow is from the front to the rear and sides.
The PRAESENSA 19”-devices are equipped with (removable) mounting brackets for mounting
in a 19”‑rack. Use four caged nuts, nylon cup washers and pan head bolts for mounting.
!
Caution!
The rack must be grounded to a safety ground. All PRAESENSA 19”-devices have a chassis
ground screw on the rear panel, which must be used for a wire connection to the rack frame.
Use a thick, multi‑strand wire (>2.5mm2) with wire eyelets and washers for a solid
connection.
3.1.4 Field wire cable requirements
Prior to installation
Confirm the following:
– The cable selected is proper for the application, taking into account all applicable local,
state, provincial, and national codes.
– The cable has not been damaged in transit or storage.
During cable installation
The following factors must be considered:
– Do not exceed the fill capacity of raceways and cable trays.
– Use grommets to protect cables when passing through metal studs or anything that can
possibly cause damage.
– Obey bending rules of cables and maximum pull force.
– Be sure to firestop all cables that penetrate a firewall.
– Use plenum rated cable where it is mandated.
– Use fire resistant cable when it is mandated.
Separation of circuits
– Separate Class1 wiring from other class wiring. A minimum distance of 6.4mm between
Class1 and other classes must be obtained for the field installed wiring.
– Wiring routing inside a 19" Lowell rack:
– Left hand side type of wiring : Mains, 12V+ NTC, 48V, Lifeline, 70/100V.
– Right hand side type of wiring: Ethernet, 24V, I/O contact.

20 en | Installation wiring PRAESENSA
2021.12.21 | V0.15b | F.01U.402.882 Underwriters Laboratories Listing Document (ULLD) Bosch Security Systems B.V.