1
Mounting Procedure
To mount the SN914-SZR, orient
the unit as shown in Figure 2. Loosen
the cover retaining screw on the
front of the Receiver and open the
front panel. The front and rear
housings may be separated for easier
installation. Remove the knock-outs
for wiring the Receiver to the con-
trol panel.
Use the rear cover as a template
to mark the mounting holes (see
Figure 2). Drill the holes as neces-
sary. The hole at the top center of
the rear housing is designed for
mounting the Receiver to the wall.
The tab also serves as a removable
stand-off when mounting the Re-
ceiver to the top of the Control Panel
housing (see Figure 1). The plastic
tab should be removed as it will
interfere with the proper closing of
the control panel door.
Receiver Wall Tamper
Both a cover and a wall tamper are
provided with a single tamper switch.
To activate the wall tamper, remove
the knock-out in the rear housing
and install a screw in the wall, leav-
ing enough of the screw head exposed to depress the tamper switch
when the cover is closed.
Wiring the Receiver
Pull the 6-wire cable (common,
power, alarm, and trouble) and
t h e 2 - w i r e c a b l e ( t a m p e r )
through the rear cover. Mount
the Receiver in the desired lo-
cation as shown in Figure 1.
Connect the SN914-SZR Re-
ceiver to the Control Panel as
shown in Figure 3. Be sure to
observe polarity. The SN914-
SZR derives its power from
the Control Panel via the V+
(to panel AUX+) and V- (to
panel C or GND) terminals. The
SN914-SZR Receiver is elec-
tronically protected against re-
verse polarity.
500 ft. max.
(152.4 m)
Control Panel
Door
Removable
Mounting
Tab (Stand-
off)
RF Receiver
Figure 1 - Mounting Location
Cover Retaining Screw
SpreadNet
®
Model SN914-SZR
RF Single Zone Receiver
Installation Instructions
The SpreadNet
®
Model SN914-SZR is a Single Zone Receiver in
the C&K family of Spread Spectrum RF products. The SN914-SZR
is a stand-alone product which supports up to 32 SpreadNet trans-
mitters. The SN914-SZR provides both a Form "C" Alarm Relay
output and a Form "A" Trouble Relay output. The SN914-SZR is not
suitable for use with smoke detectors.
Special features include an alarm and trouble event memory. The
SN914-SZR Single Zone Receiver detects alarms, tamper, low bat-
tery, and no check-in from the various transmitters (sensors).
Features
• Easy Installation
• Up to 32 Devices
• Form "C" Alarm Relay
• Individual Device Alarm/
Form "A" Trouble Relay
Trouble Indication Using
SN900 Programmer
• EEPROM Memory
• Alarm/Trouble Memory
• Uses Spacial Diversity
Antennas for Improved
• No Check-In and Low Battery
Reception
Supervision
• 900 MHz Spread Spectrum
• Wall/Cover Tamper
• Noise & RF Immunity
• Suitable for UL Grade B
Service
Mounting Location
The RF Receiver may either be mounted on the wall or on the control
panel housing. For optimum performance, the Receiver should be
mounted on the wall. The distance between the Receiver and Control
Panel must not exceed 500 ft. (152.4 m).
Receiver orientation is not a problem, as the unique antenna design
of the SpreadNet RF Receiver automatically compensates for vari-
ations in signal direction. Two antennas orientated at right angles
virtually eliminate problems associated with noise and signal fading.
When choosing a location to install the SN914-SZR RF Receiver,
you should avoid areas near screens, metal window frames, circuit
breaker boxes, metal air conditioner and heater ducts. These areas
interfere with the receiver's ability to pick up signals or are sources
of high noise and radio frequency interference.
Figure 2 - Receiver
Housing
Mounting Holes
Mounting Wall
Rear Cover
Knock-outs
Wall Tamper
Knock-out
Front Cover
Form "A"
Trouble Relay
Form "C"
Alarm Relay
Figure 3 - Wiring the Receiver
Programming
Connector P1
Tamper
Switch
Common (Panel)
AUX+ (Panel)
Relay Configuration
When wiring the SN914-SZR, a number of configurations are available
for connecting and monitoring for Alarm, Tamper, and Trouble con-
ditions. The diagrams below illustrate the proper method of connect-
ing the Receiver to the Control Panel. In each diagram, R represents
the End of Line Resistor.
R
R
Zone Input (Panel)
Legend:
Short = Alarm
Open = Trouble
R
Legend:
Short = Tamper
Open = Alarm
Zone Input (Panel)
Zone Input (Panel)
Legend:
Short = Alarm or
Tamper
Open = Trouble
R
Zone Input (Panel)
Legend:
Open = Alarm
Tamper (Form "B" Relay)
AUX+ Com
(Control Panel)
AUX+ Com
(Control Panel)
AUX+ Com
(Control Panel)
AUX+ Com
(Control Panel)
