System Sensor SSM24-6 Technical specifications

D770-11-00 1 I56-0674-008R
SSM and SSV BELL Series
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: [phone]
www.systemsensor.com
Important
Please Read Carefully and Save
This instruction manual contains important information
about the installation and operation of bells. Purchasers
who install bells for use by others must leave this manual
or a copy of it with the user.
System Sensor supplies bells for nearly all sprinkler/fire
alarm/burglar applications.
These instructions apply to all System Sensor bells in the
series. Read all instructions carefully before beginning.
Follow only those instructions that apply to the model you
are installing.
Specifications
SSM Series:
Voltage: Regulated 24 VDC
Operating Voltage Limit: 16 - 33 VDC
Maximum Current: DC - 31.1mA/FWR - 53.5mA
Operating Temperature: –31° to 150°F (–35° to +66°C)
SSV Series:
Voltage: Regulated 120 VAC
Operating Voltage Limit: 96 - 132 VAC
Maximum Current: 53mA
Operating Temperature: –31° to 150°F (–35° to +66°C)
UL Reverberant Room
Sound Output per UL 464 (dBA)
24 VDC SSM
SSM24-6 (6″, 24 VDC, P, S) 82
SSM24-8 (8″, 24 VDC, P, S) 80
SSM24-10 (10″, 24 VDC, P, S) 81
120 VAC SSV
SSV120-6 (6″, 120 VAC) 85
SSV120-8 (8″, 120 VAC) 82
SSV120-10 (10″, 120 VAC) 82
P = Polarized
S = Suppressed
NOTE: All SSM Series DC bells were only tested at the
16–33 Volt-DC/FWR limits. All SSV Series AC bells were
only tested at the 96–132 Volt AC limits. This does not
include the 80% low-end or 110% high-end voltage limits.
General Description
The National Fire Protection Association has published
codes, standards, and recommended practices for the
installation and use of the above appliances. It is recom-
mended that the installer be familiar with these require-
ments, with local codes, and any special requirements of
the authority having jurisdiction.
These bells are intended to be connected to alarm indicat-
ing circuits of UL listed fire alarm control panels. The SSM
series is polarized to enable supervision of the installation
wiring. The SSM bells require 24 VDC and the SSV bells
require 120 VAC.
CAUTION
Do not use in potentially explosive atmospheres.
Do not leave any unused wires exposed.

D770-11-00 2 I56-0674-008R
Before installing any alarm device, be thoroughly familiar
with:
NFPA 72: National Fire Alarm Code
NFPA 13: Installation of Sprinkler Systems
NFPA 25: Inspection, Testing, and Maintenance of Water-
Based Fire Protection Systems
Other applicable NFPA standards, local codes, and the
requirements of the authority having jurisdiction.
Failure to follow these directions may result in failure of the
device to report an alarm condition. System Sensor is not
responsible for devices that have been improperly installed,
tested, or maintained.
Installation
WARNING
High voltage. Electrocution Hazard. Do not handle live AC
wiring or work on a device to which AC power is applied.
Doing so may result in severe injury or death.
1. Remove the gong.
2. Wire the bell in the circuit. See Figure 1, page 3.
3. Mount the bell mechanism on a 4″ square electrical box
with the striker facing down. See Figures 2–4, page 3.
4. Replace the gong.
5. The top of the bell must be mounted a minimum of 90″
above the floor, or within 6″ of the ceiling.
CAUTION
Do not loop wire under terminals. Break wire runs to pro-
vide supervision of connections.
Audibility Rating Measurement
Sound level measurements are made in accordance with UL
Standard 464. The sound power output is measured in a
reverberant room.
Operational Testing
Always notify a central station monitoring the system
before repairing, maintaining, or testing alarm devices.
Upon completion of initial installation, all bells shall be
tested per NFPA 72. Periodic testing should be performed
at least annually. Test more often if required by the author-
ity having jurisdiction. Under normal conditions, System
Sensor bells should provide years of trouble-free service;
however, after extended service, parts of the bell may
become worn. In this case, bell should be replaced.
Do not repair or replace any bell components in the field.
If bell does not perform properly, replace the entire unit.
Failure to follow this instruction may result in failure of
the bell to report an alarm condition.

D770-11-00 3 I56-0674-008R
#8-36 x 3/4″
PAN HEAD SCREW
(4 TOTAL)
4″ SQUARE
WEATHERPROOF BACKBOX
MODEL WBB (NOT INCLUDED)
CONDUIT
ENTRANCE
GASKET
Figure 4. Weatherproof installation:
A0158-00
Figure 2. Basic mechanism and gongs:
A0156-00
Figure 3. Surface installation:
A0157-00
4" SQUARE
ELECTRICAL BOX
(NOT INCLUDED)
8-32 SCREW
8-32 SCREW
Figure 1. Typical SSM and SSV bell wiring diagrams:
WIRING (REAR VIEW)
OBSERVE POLARITY
ON SSM MODELS
USE BOTH LEADS FOR
CONNECTION. BREAK
WIRE RUN TO PROVIDE
ELECTRICAL SUPERVISION.
RED
RED
WIRE NUTS
(User supplied)
FROM
CONTROL
PANEL
BLACK
BLACK
TO NEXT
BELL OR
END-OF-LINE
RESISTOR
–
+
–
+
24VDC WIRING DIAGRAM
USE BOTH LEADS FOR
CONNECTION. BREAK
WIRE RUN TO PROVIDE
ELECTRICAL SUPERVISION.
RED
RED
WIRE NUTS
(User supplied)
FROM
CONTROL
PANEL OR
PRECEDING BELL
BLACK
BLACK
TO NEXT
BELL OR
TERMINATE
SEPARATELY
IF LAST BELL
120VAC WIRING DIAGRAM
A0154-00 A0155-00
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D770-11-00 4 I56-0674-008R
©2004 System Sensor
System Sensor warrants its enclosed SSM or SSV bell to be free from
defects in materials and workmanship under normal use and service for a
period of three years from date of manufacture. System Sensor makes no
other express warranty for this SSM or SSV bell. No agent, representative,
dealer, or employee of the Company has the authority to increase or alter
the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the repair or replacement of any part
of the SSM or SSV bell which is found to be defective in materials or
workmanship under normal use and service during the three year period
commencing with the date of manufacture. After phoning System Sensor’s
toll free number 800-SENSOR2 (736-7672) for a Return Authorization
number, send defective units postage prepaid to: System Sensor, Returns
System Sensor bells are designed to provide fire and security hazard
warning.
Bells may not work or operate properly if sprinkler piping being monitored
for water flow is plugged with pipe scale, mud, stones, or other foreign
material. Sprinkler systems should be checked regularly for such blocking
material following the instructions in Chapter 10 of NFPA 25.
BELLS WILL NOT WORK WITHOUT POWER. Bells get their power from
the fire or security panel monitoring the alarm system or AC circuit. If
power is cut for any reason, the device will not provide the desired audible
warning.
Alarms generated by the activation of waterflow detectors or supervi-
sory switches may not be received by a central station if telephone or
other communication lines to the detector are out of service, disabled,
or open.
BELLS MAY NOT BE HEARD. The loudness of the alarm device meets or
exceeds current Underwriters Laboratories’ standards. However, the bell
may not alert a sound sleeper or one who has recently used drugs or has
been drinking alcoholic beverages. The bell may not be heard on a differ-
ent floor from the person in hazard or if placed too far away to be heard
over the ambient noise such as traffic, air conditioners, machinery, or
music appliances that may prevent alert persons from hearing the alarm.
THE BELL MAY NOT BE HEARD BY PERSONS WHO ARE HEARING
IMPAIRED.
If valves controlling the water supply to a sprinkler system are closed,
vane-type waterflow detectors will not work and bells will not sound. All
valves controlling a sprinkler water supply should be sealed or locked
in the normally open position. The normally open position of the valve
should be monitored by a valve supervisory switch.
WARNING
The Limitations of Alarm Devices
Please refer to insert for the Limitations of Fire Alarm Systems
Three-Year Limited Warranty
Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174.
Please include a note describing the malfunction and suspected cause
of failure. The Company shall not be obligated to repair or replace units
which are found to be defective because of damage, unreasonable use,
modifications, or alterations occurring after the date of manufacture. In
no case shall the Company be liable for any consequential or incidental
damages for breach of this or any other Warranty, expressed or implied
whatsoever, even if the loss or damage is caused by the Company’s neg-
ligence or fault. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion
may not apply to you. This Warranty gives you specific legal rights, and
you may also have other rights which vary from state to state.