System Sensor B114LP Leaflet

Page of 2
D150-02-00 
I56-0598-004R
B114LP Plug-in Detector Base
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
BEfORE INSTALLINg
Please thoroughly read the System Sensor manual I56-407, Guide for Proper 
Use of System Smoke Detectors
. This manual provides detailed information on 
detector spacing, placement, zoning, wiring, and special applications, and is 
available at no charge from System Sensor. (For installation in Canada, refer to 
CAN/ULC-S524, Standard for the Installation of Fire Alarm Systems and CEC 
Part 1, Sec. 32.)
NOTICE: This manual should be left with the owner/user of this equipment.
IMPORTANT: The detector used with this base must be tested and maintained 
regularly following NFPA 72 requirements. The detector used with this base 
should be cleaned at least once a year.
gENERAL DESCRIPTION
The model B114LP detector base is designed for use with System Sensor model 
2151 photoelectronic and 1151 ionization detector heads. This four-wire base is 
equipped with screw terminals for the connection of power, ground, relay connec-
tions, and an optional RA400Z remote annunciator. It also includes a resistor that 
limits current when the associated smoke detector is in the alarm state.
MOUNTINg
The detector base mounts directly to 3
1
/
2
-inch and 4-inch octagon boxes and 
4-inch square boxes, with or without plaster rings. To mount the base, remove 
the decorative ring by rotating it in either direction to unhook the snaps before 
separating the ring from the base. Use the screws supplied with the junction 
box to attach the base to the box through the appropriate slots in the base. 
Position the decorative ring around the base and rotate it in either direction 
until the ring snaps into place (see Figure 2). 
BASE TERMINALS
NO.
FUNCTION
NO.
FUNCTION
1
Remote Annunciator (+)
8
N.O.
Alarm Relay
2
Test Coil (+)
9
N.O.
Form A
3
Not Used
10
C.
Initiation
4
Remote Annunciator (–)
11
C.
Contacts
5
RTC (–)
12
N.O.
Alarm Relay
6
C.
Supervisory Relay
13
N.C.
Form C
7
N.O.
Form A Contacts
14
C.
Auxiliary Contacts
INSTALLATION gUIDELINES
Allowable loop resistance is an important specification for control panels as 
well as for smoke detectors and their bases. The alarm system cannot be ex-
pected to operate correctly if system components have incompatible allowable 
loop resistances. Therefore, before beginning installation, refer to the control 
panel manufacturer’s loop resistance specification to ensure that it is listed as 
compatible with the System Sensor base and smoke detector being installed.
All wiring must be installed in compliance with the National Electrical Code 
and all applicable local codes and any special requirements of the authority 
having jurisdiction, using the proper wire size. The conductors used to con-
SPECIfICATIONS
Base Diameter: 
6.2 in (157 mm)
Base Height: 
0.95 in (24 mm)
Weight: 
0.6 lb (274 g)
Mounting: 
4˝ square box with or without plaster ring, minimum depth 1.5˝; 4˝ octagon box, minimum depth 1.5˝;
 
3
1
2
˝ octagon box, minimum depth 1.5˝; 3
1
2
˝ octagon box, minimum depth 1.5˝
Operating Temperature Range: 
0°C to 49°C (32°F to 120°F)
Operating Humidity Range: 
10% to 93% Relative Humidity Non-condensing
Electrical Ratings (includes base and detector)
System Voltage: 
120 VAC, 60 Hz
Relay Contact Ratings Resistive Load: 
Form A — 2.0A @ 30VAC/DC; Form C — 2.0A @ 30VAC/DC, 1.0A @ 125VAC
 
(If used, the RA400 Remote Annunciator and RTC operates within the specified detector system voltage)
Start-up Time (after 60 second reset): 
36.0 seconds maximum
nect smoke detectors 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.
For signal wiring (the wiring between interconnected detectors), it is recom-
mended that the wire be no smaller than AWG 18. However, the screws and 
clamping plate in the base can accommodate wire sizes up to AWG 12. The 
use of twisted pair wiring for the power (+ and –) loop is recommended to 
minimize the effects of electrical interference.
fIgURE 1. TERMINAL LAyOUT:
BASE 
TERMINALS
SHORTING 
SPRING
STRIP GAUGE
1
2
3
5
4
TAMPER 
RESISTANT TAB
6
7
8
9
10
11
12
13 14
24VDC/24VAC 
TERMINALS
C1025-00
fIgURE 2. MOUNTINg BASE TO BOx:
SNAP ON 
DECORATIVE 
RING
SCREWS 
(NOT SUPPLIED)
DETECTOR 
BASE
BOX
(NOT SUPPLIED)
SHORTING 
SPRING
C0503-00
I56-0
598-004R
For use with the following smoke detectors: US - 1151, 2151, 2151T; 
CANADA - 1151A, 2151A, 2151TA; EUROPE - 1151E, 2151E