1.3About This Manual .................................................................................................................................. 1-2
1.4How to Contact Silent Knight .................................................................................................................. 1-2
Section 2
Agency Listings, Approvals, and Requirements ................................... 2-1
3.3.5 System LEDs .................................................................................................................................... 3-6
3.3.7 RS-232 Serial Connector .................................................................................................................. 3-7
3.3.8 Microphone (MIC) Gain ................................................................................................................... 3-7
3.3.9 S1 & S2 Message Test Buttons ......................................................................................................... 3-7
3.3.10 AC Delay Switch .............................................................................................................................. 3-8
3.4Mounting the Control Panel ..................................................................................................................... 3-8
3.4.1 Preventing Water Damage ................................................................................................................ 3-8
3.6.2 Class B (Style Y) ............................................................................................................................ 3-12
3.6.3 Class A (Style Z) ............................................................................................................................. 3-12
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SKE-Series Voice Evacuation System Installation/Operation Manual
3.8Connecting Power .................................................................................................................................. 3-15
3.8.1 AC Power ........................................................................................................................................ 3-15
3.8.2 Backup Battery Power .................................................................................................................... 3-17
5.1.6 Manual Zone Switches ..................................................................................................................... 5-3
5.1.7 All Call Switch .................................................................................................................................. 5-4
5.1.8 Zone Supervision Selectors .............................................................................................................. 5-4
5.1.9 LED Descriptions ............................................................................................................................. 5-4
5.4.2 Class B (Style Y) .............................................................................................................................. 5-7
5.4.3 Class A (Style Z) ............................................................................................................................... 5-8
5.4.4 FACP Alarm Zone Control Wiring .................................................................................................. 5-9
5.4.5 General Alarm Control Wiring ....................................................................................................... 5-10
ii151267
Contents
Section 6
SKE-ZN6 Six Zone Splitter Installation ................................................................ 8-1
6.1SKE-ZN6 Board and Components ........................................................................................................... 8-1
6.1.4 Manual Zone Switches ...................................................................................................................... 8-4
6.1.5 All Call Switch .................................................................................................................................. 8-4
6.1.6 LED Descriptions ............................................................................................................................. 8-4
6.4.2 Class B (Style Y) .............................................................................................................................. 8-8
6.4.3 Class A (Style Z) ............................................................................................................................... 8-8
6.4.4 FACP Alarm Zone Control Wiring .................................................................................................. 8-9
6.4.5 General Alarm Control Wiring ....................................................................................................... 8-10
•Supervised and activated by host fire control system
•Auxiliary audio input
•Supervised Remote Microphone input (Special application for optional SKE-SRM)
•Class A or B speaker supervision
•DIP switch programmable
•UL 864 & 1711 Listed
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SKE-Series Voice Evacuation System Installation/Operation Manual
1.2Optional Accessories
Part NumberDescription
SKE-ZN44 Zone Audio Splitter (see Section 5 for more information)
SKE-SRMSupervised Remote Microphone (see Section 7 for details)
SKE-ZN66 Zone Audio Splitter (see Section 6 for more information)
SKE-V70Converts the speaker circuit voltage from 25 to 70.7 Vrms
(see Section 8 for more information)
1.3About This Manual
This manual is intended to be a complete reference for all installation and operation tasks.
Please let us know if the manual does not meet your needs in any way. We value your
feedback!
1.4How to Contact Silent Knight
If you have a question or encounter a problem not covered in this manual, contact Silent
Knight Technical Support at 800-446-6444.
To order parts, contact Silent Knight Sales at 800-328-0103 (or 203-484-7161).
1-2151267
Section 2
Agency Listings, Approvals, and Requirements
2.1FCC Warning
This device has been verified to comply with FCC Rules Part 15. Operation is subject to the
two following conditions: (1) This device may not cause radio interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
2.2Underwriters Laboratories (UL)
The SKE-450 is UL listed as a voice evacuation unit for use in NFPA 72 systems. If the SKE450 and its accessories are to be used as part of a UL installation, carefully read the UL
requirements in this section. For more information on NFPA 72 standards, refer to the NFPA National Fire Alarm Code.
2.2.1Requirements for All Installations
General requirements are described in this section. When installing an individual device,
refer to the specific section of the manual for additional requirements.
1. All field wiring must be installed in accordance with NFPA 70, National Electric Code.
2. Use UL listed notification devices with the SKE-450 voice evacuation system.
3. A full system checkout must be performed any time the panel is programmed.
4. UL installations using Class B wiring for the speaker circuit require the use of a Model
7630 EOL resistor assembly.
2.2.2Requirements for Local Protected Fire Alarm
Systems
At least one UL-listed, supervised notification appliance must be used.
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SKE-Series Voice Evacuation System Installation/Operation Manual
This page left blank intentionally.
2-2151267
Section 3
Installation
This section of the manual is intended to help you plan your tasks to facilitate the installation.
Please read this section thoroughly, especially if you are installing a SKE-450 control for the
first time.
3.1Environmental Specifications
It is important to protect the SKE-450 control panel from moisture. To prevent damage, the
following conditions should be avoided when installing the units:
•Mount indoors in dry locations only
•Do not mount directly on exterior walls, especially masonry walls (condensation)
•Do not mount directly on exterior walls below grade (condensation)
•Protect from plumbing leaks
•Protect from splash caused by sprinkler inspection ports
•Do not mount in areas with humidity-generating equipment (such as dryers, production
machinery)
When selecting a location to mount the panel, it should be mounted where it will NOT be
exposed to temperatures outside the range of 0°C-49°C (32°F-120°F) or humidity equal to or
greater than 93% at 30°C (89°F) noncondensing.
Trouble relay energized immediately on trouble
unless AC Delay is enabled, in which case, trouble
relay will energize in 2 hours.
3-6151267
Installation
3.3.6Microphone Connection
The microphone connector is used to connect a hand held microphone into the system. The
microphone can be used to record a message and as a manual voice evacuation override. See
Figure 3-4.
Figure 3-4 Microphone Connection
3.3.7RS-232 Serial Connector
The RS-232 serial connector is used to directly connect the main control to a PC or laptop to
up/download custom system messages. See Section 4.2.2.2.
3.3.8Microphone (MIC) Gain
Turn fully clockwise for maximum gain, turn fully counter-clockwise for minimum gain. See
Figure 3-4 for Microphone Gain control location.
3.3.9S1 & S2 Message Test Buttons
In normal operating mode you can test CMD 1 and CMD 2 messages by pressing the S1
button (for CMD 1 message) or S2 button (for CMD 2 message). When the S1 or S2 button is
pressed for 1 second, the audio message and notification output will begin sounding,
simulating an actual CMD input alarm. The message and notification will continue to sound
(as programmed) for ten minutes, or you can manually silence them by pressing the same
CMD button for 1 second. See Section 4.2 for S1 and S2 functions in recording mode.
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SKE-Series Voice Evacuation System Installation/Operation Manual
3.3.10AC Delay Switch
The SKE-450 has two built-in trouble relays – General Trouble and AC Trouble.
The General trouble relay will energize when any trouble condition is detected. If the only
trouble condition is an AC failure, the relay output can be programmed to delay the indication
by 2 hours by setting the DIP AC Delay Switch 1 to ON. If the AC Delay Switch is in the OFF
position the trouble relay will energize immediately when AC power fails. See Figure 3-1 for
AC Delay Switch location. The AC Delay Switch may be used only when the SKE-450 is
connected to an FACP that uses central station or off premise signaling.
The AC trouble relay will energize when an AC trouble is detected regardless of the settings
of the AC delay switch.
3.4Mounting the Control Panel
Read the environmental specifications in Section 3.1 before mounting the control panel
cabinet. This will ensure that you select a suitable mounting location.
The panel should be accessible to main drop wiring runs. It should be mounted as close to the
center of the building as possible and located within a secured area, but should be accessible
for testing and service.
Mount the control panel cabinet so it is firmly secured to the wall surface. When mounting on
concrete, especially when moisture is expected, attach a piece of 3/4-inch plywood to the
concrete surface and then attach the cabinet to the plywood. Also mount any other modules to
the plywood.
The cabinet can be surface or flush-mounted. If you will be flush-mounting the cabinet, the
hole for the enclosure should be 14.5" W x 24.75" H x 3-7/16" D (36.8cm W x 62.9cm H x
8.73cm D). Do not flush-mount in a wall designated as a fire break.
3.4.1Preventing Water Damage
Water damage to the fire system can be caused by moisture entering the cabinet through the
conduits. Conduits that are installed to enter the top of the cabinet are most likely to cause
water problems. Installers should take reasonable precautions to prevent water from entering
the cabinet. Water damage is not covered under warranty.
3-8151267
Installation
Speaker
SpeakerTo AC
CMD Inputs
Battery Cable
3.4.2Wiring Specifications
The maximum line resistance of the wire run from FACP to voice evacuation control system is
50W. All wiring and devices installed in the system must meet the standards described in
National Electrical Code (NFPA 70), NFPA Standard 72, and Life Safety Code (NFPA 101).
To avoid induced noise (transfer of electrical energy from one wire to another), keep input
wiring isolated from high-current output and power wiring. Avoid pulling one multiconductor
cable for the entire panel. Instead, separate the wiring as follows:
Table 3-6
1/4" spacing must be maintainedInput/Output TypeWiring
between each of these circuit types;Non Power-Limited:AC power, Standby batteries
as well as between power limitedPower-Limited:Notification devices, SKE-SRM, and Relays
and non power-limited circuits.Audio:Speaker
DO NOT pull wires from different groups through the same conduit.
For the same reasons, wiring within the cabinet should be routed around the perimeter of the
cabinet. It should not cross the printed circuit board where it could induce noise into the
sensitive microelectronics or pick up unwanted RF noise from the high speed circuits.
High frequency noise, such as that produced by the inductive reactance of a speaker or bell,
can also be reduced by running the wire through ferrite beads or by wrapping it around a
ferrite toroid core. Figure 3-5 provides an example.
Figure 3-5 Wire Routing Example
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SKE-Series Voice Evacuation System Installation/Operation Manual
Control Panel
Cover Plate
Control Panel
Cover Plate
Zone Splitter
Access Plate
Retaining Screws
Hinge Screw
Main Control
Chassis Mounting
Screws
3.5Mounting the Main Control Board in the Cabinet
Follow these steps to properly install the main control board into the cabinet:
1. Unlock and open the cabinet door.
2. Remove the two cover plate retaining screws, then open the control panel cover plate. See
Figure 3-6.
Note: The control panel cover plate can be remove by removing the Hinge screw.
3. Run all wire needed to install the system at this time. See Sections 3.6 and 3.7.
4. Mount the main control board into the cabinet as shown in Figure 3-7.
5. Connect wiring as described in Sections 3.6, 3.7, and 3.8.
3-10151267
Figure 3-6 View of Cabinet With Cover Plate in Place
Figure 3-7 Main Control Board Mounting Location
Installation
3.6Speaker Wiring
Each SKE-450 supplies one NAC (Notification Appliance Circuit) for speaker connection.
The speaker circuit can be supervised and wired Class B (Style Y) or Class A (Style Z). The
speaker circuit is capable of 50 watts of power at 25 Vrms or 70.7 Vrms (using the SKE-V70
Module, see Section 8 for SKE-V70 installing instructions).
Note: If the SKE-V70 Module is installed, all speaker wiring must be separated by a minimum of 1/4” from the
low voltage wiring, and must exit the cabinet through its own opening.
3.6.1Wiring Lengths
Table 3-7
Number Of SpeakersTotal LoadWire Distance in Feet
@1/2 W@1 WVrmsWatts18 AWG16 AWG14 AWG12 AWG
105
2010
3015
4020
5226
8040
10050
25Vrms
70Vrms250003970063200100520
25Vrms
70Vrms15200241503840061100
25Vrms
70Vrms11000175002780044200
25Vrms
70Vrms8500135102150034175
25Vrms
70Vrms610097001540024520
25Vrms
70Vrms410065001036016480
25Vrms
70Vrms35005560885014070
5W
10W
15W
20W
26W
40W
50W
39006200986015680
2125338053758540
1460232036905870
1100175027804420
760120019203050
55087513902200
45071511301800
Note: The above table assumes a uniform distribution of the speakers, and that a max of 20% voltage drop on the
last speaker is allowed.
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SKE-Series Voice Evacuation System Installation/Operation Manual
Supervised
Power Limited
15 kΩ EOL
UL Listed
Model 7630
Supervised
Power Limited
3.6.2Class B (Style Y)
Figure 3-8 illustrates how to wire speakers to the control panel using Class B (Style Y)
supervision.
Figure 3-8 Class B (Style Y) Speaker Configuration
3.6.3Class A (Style Z)
Figure 3-9 illustrates how to wire speakers to the control panel using Class A (Style Z) wiring.
Figure 3-9 Class A (Style Z) Speaker Configuration
3-12151267
Installation
Supervised
Power Limited
4.7 kΩ EOL
UL Listed
Model 7626
Note: The 4.7 kΩ EOL
is typically used with
Silent Knight Controls.
Check the Installations
Manual of the FACP
you are using to
determine EOL value.
If a trouble condition
exists on the SKE-450,
the supervision circuit is
opened in addition to
energizing the trouble
relay causing a trouble at
the FACP.
3.7Input Circuits
The SKE-450 has two command input circuits (CMD1 & CMD2). The command input
circuits are used to activate the amplifier that transmits the audio signal over the output
speakers.
3.7.1CMD1 Input Circuit
This section describes how to connect Class B (Style Y) or Class A (Style Z) inputs to CMD1
terminals. CMD1 input circuit rating is 12 to 30 VDC @ 50 mA. CMD1 is a polarity reverse
input to activate and supervise the SKE-450
3.7.1.1Class B (Style Y)
Figure 3-10 illustrates how to wire a Class B (Style Y) input circuit to CMD1 input.
1512673-13
Figure 3-10 Class B (Style Y) CMD1 Input Circuit Configuration
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