INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
B501BHT
Temporal Tone Sounder Base
Specifications
Base Diameter:
6.0 inches (15.2 cm)
Base Height (less sensor):
Weight:
2.3 inches (5.9 cm)
0.4 lb. (181 gm)
Operating Temperature Range:
Operating Humidity Range:
Electrical Ratings
32° to 120°F (0° to 49°C)
10% to 93% Relative Humidity
External Supply Voltage:
17 to 32 VDC
Standby Current:
Alarm Current:
1.0 mA maximum
15 mA maximum
10% of supply voltage
200 µF
Maximum Ripple Voltage:
Start-up Capacitance:
Communication/Initiating Loop Supply
Current Draw from Remote Output
of Sensor to turn on Horn:
Sound Output:
700 µA maximum
Greater than 90 dBA measured in anechoic room at 10 feet, 24 volts. 85 dBA minimum
measured in UL reverberant room.
Before Installing
NOTE: When not used as a supplementary evacuation system
the external 24 VDC supply shall be treated as a component of
the main power supply system and shall fall under the require-
ments of the main power supply system per NFPA 72.
Please read the System Smoke Detector Application Guide,
which provides detailed information on sensor spacing. place-
ment, zoning, wiring, and special applications. Copies of this
manual are available from System Sensor. NFPA 72 and NEMA
guidelines should be observed.
B501BHT Terminals
No.
Function
NOTICE: This manual should be left with the owner/user of
this equipment.
1
2
3
4
5
External Supply Positive (+)
External Supply Negative (–)
Negative (–) Comm. Line In and Out
Positive (+) Comm. Line In and Out
Sounder Base Interconnect
IMPORTANT: The detector used with this base must be tested
and maintained regularly following NFPA 72 requirements.
The detector should be cleaned at least once a year.
General Description
Terminals 3 and 4 are used for the communication circuit.
The B501BHT sounder base is used with System Sensor 200
and 500 Series sensor heads. Refer to the appropriate manual
for more information on sensors.
Mounting
Mount the B501BHT directly to an electrical box, using the
mounting kit, supplied (see Figure 2).
The B501BHT incorporates the distinctive three-pulse tempo-
ral pattern fire alarm evacuation signal now required by NFPA
72 for commercial and residential applications.
The sounder base is 1.1-inches deep. Electrical boxes must
1
be 4-inches square by at least 1 ⁄2 inches deep - 21⁄8 inches is
recommended.
The sounder base is intended for use with intelligent systems.
Refer to the panel manual for the maximum allowable num-
ber of units per loop. The sounder base requires an external
24VDC supply with reverse polarity capability or a relay mod-
ule configured to reverse the power as in Figure 5. The con-
nections for the external supply (terminals 1 and 2) and the
communication loop (terminals 3 and 4) are isolated to pre-
vent electrical interaction between them.
NOTE: A maximum space of 1⁄8 inch from the outside edge of
the electrical box to the inside edge of the drywall or ceiling
tile is allowable.
Wiring Guidelines
All wiring must be installed in compliance with the National
Electrical Code and the local codes having jurisdiction and
must not be of such length or wire size which would cause
the base to operate outside of its published specifications. The
conductors used to connect smoke sensors to control panels
and accessory devices should be color coded to reduce the
likelihood of wiring errors. Improper connections can prevent
a system from responding properly in the event of a fire.
When the sensor’s visible LEDs are latched on for approxi-
mately 10 seconds, the associated horn sounds. A loop of
horns can be made to sound by reversing the polarity of the
external supply when configured as in Figure 4 and 5. When
configured as in Figure 5, a loop of horns can also be made to
sound by turning on the Intelligent Relay Module.
D550-06-00
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Figure 4. Wiring diagram:
Detector Activates Sounder Base(s) - (Complies with UL268)
gether using terminal 5, Sounder Base Interconnect, as shown
in the diagram.
UL has approved grouping for up to six B501BHT base with
horn units. When wired as a group, any detector in the group
that has its LED’s latched on by the panel will cause other
B501BHT units in the group to sound. This type of “local”
grouping is accomplished by wiring the grouped devices to-
NOTE: Since a local grouping of horns is not supervised, the
groups can only be used as a supplementary evacuation system.
It is not acceptable to group horns for primary alarm signaling.
CLASS A OPTIONAL WIRING
INTELLIGENT
MONITOR
MODULE
OPTIONAL SOUNDER INTERCONNECT
*
(+)
(–)
2
1
(+) COMM.
6
7
4
5
4
5
4
5
U.L.
LISTED
EOL
3
2 1
3
2 1
3
2 1
RESISTOR
47K
(–) COMM.
U.L.
LISTED
EOL
RELAY
24V
(–) POWER
(+) POWER
CLASS A OPTIONAL WIRING
C0474-00
GROUPING OF UP TO 6 MODEL B501BHT TEMPORAL TONE SOUNDER BASES.
*
Figure 5. Wiring diagram:
Detector Activates Sounder Base(s); Intelligent Relay Module Ac- gether using terminal 5, Sounder Base Interconnect, as shown
tivates All Sounder Bases - (Complies with UL 268 and UL 464) in the diagram.
grouping is accomplished by wiring the grouped devices to-
UL has approved grouping of up to six B501BHT bases with NOTE: Since a local grouping of horns is not supervised, the
horn units. When wired as a group, any detector in the group groups can only be used as a supplementary evacuation sys-
that has its LED’s latched on by the panel will cause other tem. It is not acceptable to group horns for primary alarm
B501BHT units in the group to sound. This type of “local” signaling.
INTELLIGENT
MONITOR
OPTIONAL SOUNDER INTERCONNECT
*
MODULE
UL LISTED
INTELLIGENT
RELAY
COMPATIBLE
CONTROL
PANEL
(+)
(–)
FIRST
SOUNDER
BASE
LAST
SOUNDER
BASE
MODULE
†
(+) COMM.
(–) COMM.
UL LISTED
EOL
SLC
RESISTOR
47k
UL
LISTED
EOL
RELAY
24V
(–) POWER
(+) POWER
UL LISTED
24V SUPPLY
THIS IS A STANDARD RELAY
MODULE CONFIGURED TO
REVERSE THE POWER
†
C0968-00
GROUPING OF UP TO 6 MODEL B501BHT TEMPORAL TONE SOUNDER BASES.
D550-06-00
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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
System Sensor warrants its enclosed smoke detector base to be free from defects in mate-
rials 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 smoke detector
base. 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 smoke
detector base 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
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 negligence 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.
D550-06-00
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I56-1367-004R
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