SS-450-003 2 I56-3737-002R
INSTALLATION GUIDELINES
All wiring must be installed in compliance with all applicable local codes and
any special requirements of the local authority having jurisdiction, using the
proper wire sizes. 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.
For signal wiring (the wiring between interconnected detectors), it is recom-
mended that the wire be no smaller than 18 gauge (0.9 square mm). However,
wire sizes up to 12 gauge (2.5 square mm) can be used with the base.
Alarm system control panels have specifications for allowable loop resistance.
Consult the control panel specifications for the total loop resistance allowed
before wiring the detector loops.
WIRING INSTRUCTIONS
The base uses a latching relay that can change states if it is subjected to me-
chanical shocks or jarring. As a result, even though relay contacts are in the
open state when the base is shipped from the factory, the contacts may have
closed during shipment.
Connecting an auxiliary control circuit to closed relay contacts can cause an
unexpected, and possibly dangerous, activation of that circuit. Therefore, do
NOT connect an auxiliary control circuit to the relay contacts (terminals 1, 2,
and 3) before ensuring that the relay contacts are in their open state. Ensure
that the contacts are open by applying power to the bases WITHOUT the sen-
sor heads installed.
Make wiring connections by stripping about
3
⁄8" (10 mm) of insulation from
the end of the wire. Then, slide the wire under the clamping plate and tighten
the clamping plate screw.
Wire the normally open (NO) line to terminal 3 (see Figure 4). Insert the nor-
mally closed (NC) line of the relay to terminal 1 and the relay common line
to terminal 2. Wire the communication lines in (–) and out (–)to terminal 4.
Insert the communication line in (+) and out (+) to terminal 5.
Check the zone wiring of all bases in the system before installing detector
heads. This includes checking the wiring for continuity, correct polarity,
ground fault testing, and performing a dielectric test.
A label is affixed to the base for recording the zone, address, and type of
detector being installed at the base location. This information is useful for set-
ting the detector head address and for verification of the sensor type required
for that location.
Once all detector bases have been wired and mounted, and the loop wiring
has been checked, the detector heads may be installed in the bases.
TAMPER-RESIST FEATURE
NOTE: Do not use the tamper-resist feature if the removal tool is to be used.
This detector base includes a tamper-resist feature that prevents its removal
from the base without the use of a tool.
To activate this feature, break the tab from the detector base as shown in Fig-
ure 5A. Then, install the detector.
To remove the detector from the base once the tamper-resist feature has been
activated, insert a small-bladed screwdriver into the slot from the top and
press down on the lever (see Figure 5B). This allows the detector to be rotated
counterclockwise for removal.
The tamper-resist feature can be defeated by breaking and removing the plas-
tic lever from the base. However, this prevents the feature from being used
again.
SCREWS
(NOT SUPPLIED)
BOX
(NOT SUPPLIED)
MOUNTING
PLATE
ACTIVATION SHUNT -
MOVE TO SWITCH
FROM SHORT DELAY
TO LONG DELAY
FIGURE 2. MOUNTING THE BASE TO AN ELECTRICAL BOX:
C0148-01
FIGURE 3:
C0473-00
(4 pages)
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