System Sensor 2151 - Product Manual Dated 1/2012

Agency Listings
2151 Duct Smoke

Detector for

Special Applications
The System Sensor 2151 low-profile photoelectric smoke
detector with a B114LP or B114LPBT base is listed to
Underwriters Laboratories 268A specifically for use in no-
flow/low-flow air-handling systems.
Features for 2151/B114LP/B114LPBT
•
Low-profile smoke detector design
•
Low standby current
•
Two LEDs blink in standby
•
Detector head plugs easily into base
•
Field sensitivity metering of detector to meet the requirements

of NFPA 72 with the use of SENS-RDR
• Designed for mounting on a standard electrical box
•
Removable cover and insect screen for field cleaning
•
Accepts 24 or 120V supply voltage
The 2151 can be used as a pendant mount detector in no-flow/
low-flow air-handling systems (0-3,000 FPM). The pendant /plenum
mounted
2151
is to be installed into a
B114LP or B114LPBT

base. This is the perfect combination for installation in ducts where
the air velocity is below 500fpm or for duct sizes as small as 8” in
diameter.
Pendant mounted in a standard electrical box within the duct, the
twist-in/twist-out head allows easy removal from the base for quick
cleaning and maintenance. The 2151 heads can be combined with
the System Sensor B114LP 120VAC base or the B114LPBT 24VAC/
DC base.
S911 HVDS00700
2151 Photoelectric Detector Specifications
Architectural/Engineering Specifications
The air duct smoke detector shall be a System Sensor model 2151 Series Smoke detector listed to UL 268A specifically for use in air handling
systems when used in conjunction with the B114LP or B114LPBT base. The detector shall operate at air velocities up to 3,000 feet per minute.
It shall be capable of local testing using a magnet test on the 2151 sensor head.
Physical Specifications
Size
1.66” (4.22cm) H
Weight
3.6 oz (104 g)
Operating Temperature Range
32 ̊F to 120 ̊F (0 ̊C to 49 ̊C)
Operating Humidity Range
10 to 93% relative humidity non-condensing
B114LP/B114LPBT Plug-In Detector Base
Physical Specifications
Diameter
6.1 inches (155mm)
Mounting
4-inch (102 mm) square box with or without plaster ring; Minimum Depth - 1.5 inches (38 mm)
4-inch Octagon Box; Minimum Depth - 1.5 inches (38 mm)
Operating Temperature Range
Refer to applicable sensor Operating Temperature Range using the Base/Sensor Cross Reference Chart

at systemsensor.com
B114LP Typical Wiring Diagrams
B114LP Base Terminals

No. Function
1
Remote Annunciator (+)
2
Not Used
3
Not Used
4
Remote Annunciator (–)
5
Not used
6 N.O. Supervisory Relay
7 N.O. Form A Contacts
8
N.O.
Alarm Relay
9 N.O. Form A
10 C. Initiation
11 C. Contacts
12
N.O.
Alarm Relay
13 N.C. Form C
14 C. Auxiliary Contacts
RA100Z
(Optional
)
RA100Z
(Optional)
RELEASING
DEVICE
POWER
RELEASING
DEVICE
POWER
1
6
7
8
9
10
11
12
13
14
2
3
4
5
RELEASING
DEVICE
1
6
7
8
9
10
11
12
13
14
2
3
4
5
EOL
FIRE
ALARM
CONTROL
P
ANEL
CONTROL
P
ANEL
ALARM INITIA
TION LOOP
SPECIFIE
D
BY
P
ANEL
MANUF
ACTURER
BLACK LEADS
TRANSFORMER
PRIMAR
Y
120 V
AC
120 V
AC
SPECIFIED
BY
P
ANEL
MANUF
ACTURER
SUPER
VISOR
Y
REL
AY
ALARM
REL
AY
ALARM
REL
AY
SUPER
VISOR
Y
REL
AY
EOL
NOTE:
ABOVE DIAGRAM SHOWS NFP
A
REQUIRED WIRING OF SUPER
VISED
SYSTEMS. SCHEMA
TIC SHOWN BELOW FOR REFERENCE.
(+)
(–)
(+)
(–)
RA100Z
(Optional
)
F
AN/DAMPER
CONTROL
POWER
1
6
7
8
9
10
11
12
13
14
2
3
4
5
EOL
FIRE
ALARM
CONTROL
P
ANEL
ALARM INITIA
TION LOOP
SPECIFIE
D
BY
P
ANEL
MANUF
ACTURER
BLACK LEADS
TRANSFORMER
PRIMAR
Y
120 V
AC

S0279-01
S02809-01 HVDS00700
B114LPBT Typical Wiring Diagrams
B114LPBT Base Terminals

No.
Function
1
Remote Annunciator (+)
2
Test Coil (+)
3
Not Used
4
Remote Annunciator (–)
5
RTC (–)
6
C.
Supervisory Relay
7
N.O.
Form A Contacts
8
N.O.
Alarm Relay
9
N.O.
Form A
10
C.
Initiation
11 C.
Contacts
12
N.O.
Alarm Relay
13
N.C.
Form C
14
C.
Auxiliary Contacts
AP
A151
(Optional
)
RELEASING
DEVICE
1
1
6
7
8
9
10
11
12
13
14
2
2
3
3
AP
A151
(Optional)
1
2
3
4
5
RELEASING
DEVICE
1
6
7
8
9
10
11
12
13
14
2
3
4
5
EOL
FIRE
ALARM
CONTROL
P
ANEL
CONTROL
P
ANEL
ALARM INITIA
TION LOOP
SPECIFIE
D
BY
P
ANEL
MANUF
ACTURER
24 V
ACrms/D
C
24 V
ACrms/D
C
SPECIFIED
BY
P
ANEL
MANUF
ACTURER
SUPER
VISOR
Y
REL
AY
ALARM
REL
AY
ALARM
REL
AY
SUPER
VISOR
Y
REL
AY
EOL
NOTE:
ABOVE DIAGRAM SHOWS NFP
A
REQUIRED WIRING OF SUPER
VISED
SYSTEMS. SCHEMA
TIC SHOWN BELOW FOR REFERENCE.
AP
A151
(Optional
)
F
AN / DAMPER
SHUTDOWN
1
1
6
7
8
9
10
11
12
13
14
2
2
3
3
4
5
24 V
ACrms/D
C
POWER
H0269-01
H0268-01 ©2012 System Sensor.
Product specifications subject to change without notice. Visit systemsensor.com
for current product information, including the latest version of this data sheet.
HVDS00700 • 1/12
Ordering Information
Part No.
Description
2151
Low-profile photoelectric plug-in detector (order the base listed below)
B114LP
120 VAC detector base
B114LPBT
24VAC/DC detector base
3825 Ohio Avenue • St. Charles, IL 60174

Phone: 800-SENSOR2 • Fax: 630-377-6495
www.systemsensor.com