SilentKnight SKE-ZN4 User Manual
SKE-ZN4 Zone Splitter Installation
Instructions
The SKE-ZN4 is an evacuation zone splitter for
use with the SKE-450. The SKE-ZN4 is capable
of splitting the audio output from the main amp
into four separate audio output zones or
channels.
The SKE-ZN4 can be used in installations where
the audio must be split to different floors or
zones to accommodate a safe and efficient
evacuation process.
Note: Installation and wiring of this device must be done in
accordance with NFPA 72 and local ordinances.
Compatibility
The SKE-ZN4 is compatible with the SKE-450
control panel.
Mounting
3. Remove the SKE-ZN4 access plate.
4. Mount the SKE-ZN4 to the SKE-450 cabinet
mounting standoffs with the 7/10” screw-in
standoffs provided.
SKE-ZN4
Mounting
Standoffs
Figure 2: SKE-ZN4 Mounting Standoff Locations
5. Connect wiring harness to the expansion
connector on the SKE-450 and to the direct
connect pins on the SKE-ZN4. See Figure 3.
Note: Speaker outputs of the SKE-450 must not be used with the
SKE-ZN4 because supervision will not be provided at the
SKE-450.
1. Unlock and open the SKE-450 control panel
cabinet door.
2. Open the control panel cover door by
removing the two retaining screws and
rotating the door to the left. See Figure 1.
SKE-ZN4 Access
Plate
Control Panel
Cover Retaining
Screws
Control Panel
Cover Door
Figure 1: SKE-450 Cabinet With Control Panel Cover In
Place
Wiring Harness
(PN 130398)
15 kΩ EOL
UL Listed
Model 7630
Figure 3: View With SKE-ZN4 Installed
SKE-
ZN4
Cover
6. Wire speaker to zone outputs as required by
the installation specifications. See the
Speaker Wiring section.
7. Attach the cover plate to the SKE-ZN4. See
Figure 3.
P/N 151394
SKE-ZN4 Zone Splitter Installation Instructions
Speaker Wiring
Each SKE-ZN4 supplies four Notification
Appliance Circuits for speaker connection. The
circuits can be supervised and wired Class B
(Style Y) or Class A (Style Z). Each circuit is
capable of 50 watts of power.
Note: The system can support a maximum of 50 watts of power.
1. Remove the cover plate on the SKE-ZN4.
See Figure 3.
2. Set the Speaker Circuit Supervision Selector
to the appropriate position for Class B or
Class A wiring. See Figure 4.
Figure 4: Speaker Circuit Supervision Selections
3. To wire speakers to the control panel using
Class B (Style Y) supervision see Figure 5.
FACP Alarm Control Wiring
This section describes how to connect relay
outputs from a FACP to control the four separate
zones on the SKE-ZN4 four zone splitter.
1. Connect an active low relay or contact from
the FACP to the Alarm Selects on the SKEZN4. See Figure 7.
Supervised
Power Limited
4.7 kΩ
UL Listed EOL
Model 7628
Non-Supervised
Power Limited
Supervised
15 kΩ EOL
UL Listed
Model 7630
Figure 5: Class B (Style Y) Speaker Configuration
Power Limited
4. To wire speaker circuits to the control panel
in a Class A (Style Z) configuration see
Figure 6.
Supervised
Power Limited
Must be wired
within 20 feet
and in conduit
Figure 7: FACP Alarm Control Outputs
Electrical Specifications
Ground Fault Impedance To Any Terminal: 0 Ω
Audio Circuit: 25 Vrms or 70.7 Vrms
Standby Input Power: 27.4 VDC @ 45 mA
Alarm Input Power: 27.4 VDC @ 250 mA
Figure 6: Class A (Style Z) Speaker Configuration
2
Maple Grove, MN 55369-4927
763-493-6455 or 800-328-0103
© 2005 Silent Knight PN 151394 Rev B
7550 Meridian Circle
Fax: 763-493-6475
www.silentknight.com
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