WIRING INSTRUCTIONS
CAUTION
For system supervision — For terminals 2, 3, and 5 do not use looped wire under terminals. Break wire run to provide
system supervision of connections.
(+) POWER LOOP
2-WIRE CONTROL PANEL
(–) POWER LOOP
3
2
4
5
1
12
13
14
COM CONTACT
N.C. AUXILIARY
N.O. FORM C
E
O
L
CLASS A OPTIONAL WIRING
A78-1577-00
Figure 2. Typical Wiring Diagram
Wire connections are made by stripping insulation from the end of the wire, sliding the bare end of the wire under the
clamping plate, and tightening the clamping plate screw. Use the strip gauges molded into the inside and underside of
the base for ease of wiring to terminals 1 through 5, and to terminals 12 through 14, respectively.
The zone wiring of the detector base should be checked before the detector heads are installed in them. To make this
possible, this base contains a special spring-type shorting jumper. After a detector base is properly wired and mounted
on an electrical box, make sure that the jumper spring is in contact with the base of Terminal 3. This temporary connec-
tion shorts the positive-in and positive-out leads and permits the wiring of the loop to be checked for continuity.
Once all the detector bases have been wired and mounted, and the loop wiring has been checked, the detector heads
may be installed in the bases. The shorting spring in the base will disengage automatically 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 circuit.
TAMPER-RESISTANCE FEATURE
NOTE: Do NOT use the tamper-resistance feature if the XR2 Removal Tool will be used.
This detector base includes a tamper-resistance feature that prevents removal of the detector without the use of a tool.
To make the detector tamper-resistant, break off the tab on the detector base shown in Figure 3A and then install the
detector.
To remove the detector from the base once the tamper-resistance feature has been activated, place a small-bladed
screwdriver into the small hole on the side of the base and push plastic lever away from the detector head (see Figure
3B). This will allow the detector to be rotated counterclockwise for removal.
N550-04-00
3
I56-636-01
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