D150-02-00
2
I56-598-03R
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.
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.
For signal wiring (the wiring between interconnected detec-
tors), 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 rec-
ommended to minimize the effects of electrical interference.
Wiring Instructions
NOTE:
Refer the manufacturer’s instructions for releasing
device wiring.
NOTE:
To ensure that electrical connections are super-
vised, do NOT loop wires under terminals 8, 9, 10,
and 11 - cut the wire at each terminal.
To make electrical connections, strip approximately 3/8" (1
cm) insulation from the end of each wire. Slide a wire
under the clamp plate on each side of the terminal screw
and tighten the screw.
SNAP ON
DECORATIVE
RING
SCREWS (NOT
SUPPLIED)
DETECTOR
BASE
BOX (NOT
SUPPLIED)
SHORTING
SPRING
Figure 2. Mounting base to box:
Base Terminals
No. Function
1
Remote Annunciator (+)
2
Not used
3
Not used
4
Remote Annunciator (–)
5
Not used
6
N.O.
Supervisory Relay
7
N.O
Form A Contacts
8
N.O.
Alarm Relay
9
N.O.
Form A
10
C. Initiation
11
C. Contacts
12
N.O.
Alarm Relay
13
N.C. Form
C
14
C.
Auxiliary Contacts
Figure 1. Terminal layout:
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