B110LP Datasheet, PDF (2/4 Pages) Systemsensor advanced ideas. – Plug-in Detector Base

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 expected to operate cor-
rectly 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.
Figure 1. Mounting base to box:
System Sensor smoke detectors and mounting bases are
marked with a compatibility identifier as the last digit of a
five-digit code stamped on the back of the product.
Connect detectors only to compatible control units as indi-
cated in System Sensor’s compatibility chart. This chart
consists of a current list of UL-listed control unit/detector
combinations and is available from System Sensor upon
request.
SHORTING
SPRING
SNAP ON
DECORATIVE
RING
SCREWS (NOT
SUPPLIED)
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 jurisdic-
tion, using the proper wire size. The conductors used to
connect 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.
DETECTOR
BASE
BOX (NOT
SUPPLIED)
For signal wiring (the wiring between interconnected
detectors), it is recommended 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 interfer-
ence.
NOTE: To ensure that electrical connections are super-
vised, do NOT loop wires under terminals 2, 3, and
5 - break the wire at each terminal.
A78-1175-01
The shorting spring in the base will disengage automatical-
ly when the detector head is removed from the base. DO
NOT remove the shorting spring since it reengages as the
detector head is turned into the base, completing the cir-
cuit.
To make electrical connections, strip approximately 3/8" (1
cm) insulation from the end of each wire. Slide the wires
under the clamp plate and tighten the terminal screw.
Check the zone wiring before installing the smoke detector
head. The built-in shorting spring makes it convenient to
do this. After the detector base is wired and attached to the
electrical box, position the shorting spring against terminal
3. Use the slot in the retaining clip to hold the spring
against the terminal, as shown in Figure 1. This shorts the
negative-in and negative-out leads so that loop wiring can
be tested for continuity.
Tamper-resistance Feature
NOTE: DO NOT use the tamper-resistance feature if the
System Sensor XR2 Removal Tool will be used to
remove detectors from the base.
This detector base can be made tamper resistant so that the
detector cannot be detached without the use of a tool. To
make the base tamper-resistant, break off the smaller tab at
the scribed line on the tamper-resistance tab, on the detec-
tor mounting bracket (see Figure 3A), before installing the
detector.
D150-05-00
2
I56-594-03R