CAUTION

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 fully

turned into the base, completing the circuit.

Tamper-resistance Feature

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 activate this feature, break off the tab on the detector

base shown in Figure 3A, then install the detector. To

D150-01-00

3

I56-599-03R

Figure 2. Typical wiring diagram:

(+) POWER LOOP

(–) 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

remove the detector from the base once the tamper-resist-

ance 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 counter-

clockwise for removal.

NOTE: Head removal after the tamper-resistance feature

has been activated requires removal of the decora-

tive ring.

The tamper-resistance feature can be defeated by breaking

and removing the plastic lever from the base, however this

prevents using the feature again.

PLASTIC LEVER

BREAK TAB AT

DOTTED LINE BY

TWISTING TOWARD

CENTER OF BASE.

USE SMALL-BLADED

SCREWDRIVER TO

PUSH PLASTIC LEVER

IN DIRECTION OF

ARROW.

A78-1175-03

Figure 3B. Removing detector head from base:

Figure 3A. Activating tamper-resistance feature: