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INSTALLATION AND MAINTENANCE INSTRUCTIONS

BEFORE INSTALLING

Please read the 

System Smoke Detectors Application Guide

, which provides 

detailed information on detector spacing, placement, zoning, wiring, and spe-
cial applications. Copies of this application guide are available from System 
Sensor. CAN/ULC S524 guidelines should be observed. 

NOTICE

: This manual should be left with the owner/user of this equipment.

IMPORTANT

: The detector used with this base must be tested and main-

tained regularly following CAN/ULC S536 requirements. The detector should 
be cleaned at least once a year.

GENERAL DESCRIPTION

The B300A-6 and B300A-6-IV are plug-in detector bases intended for use in an 
intelligent system, with screw terminals provided for power (+ and –), and 
remote annunciator connections. Communication takes place over the power 
lines (+ and –).

BASE TERMINALS

NO. FUNCTION

Power (–), Remote Annunciator (–)

Power (+)

Remote Annunciator (+)

FIGURE 1. TERMINAL LAYOUT

 

TERMINAL 1

TERMINAL 2

TERMINAL 3

   C0127-07

MOUNTING

This detector base mounts directly to 4-inch square (with and without plaster 
rings), 4-inch octagon, 3

1

/

2

-inch octagon, and single gang junction boxes. To 

mount, remove the decorative ring by turning it in either direction to unhook 
the snaps, then separate the ring from the base. Install the base on the box 
using the screws supplied with the junction box and the appropriate mounting 
slots in the base.

Place the decorative trim ring on the base and rotate it in either direction until 
it snaps into place. (See Figure 2.)

SPECIFICATIONS

Base Diameter: 

6.1 inches (155 mm)

Base Height: 

0.76 inches (19 mm)

Operating Temperature: 

Refer to applicable sensor Operating Temperature Range using the Base/Sensor Cross Reference Chart at systemsensor.com.

Electrical Ratings

Operating Voltage: 

15 to 32 VDC

Standby Current: 

170 µA 

Listings: ULC S529

I56-9

127-00

1

FIGURE 2. MOUNTING DETECTOR TO BOX

 

SNAP ON

DECORATIVE

RING

SCREWS

(NOT SUPPLIED)

DETECTOR

BASE

BOX

(NOT SUPPLIED)

 

C2036-01 

INSTALLATION AND WIRING GUIDELINES (SEE FIGURE 3)

All wiring must be installed in compliance with all applicable local codes 
and any special requirements of the authority having jurisdiction. Proper wire 
gauges should be used. The conductors used to connect smoke detectors to 
control panels and accessory devices should be color-coded to reduce the like-
lihood of wiring errors. Improper connections can prevent a system from re-
sponding 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 AWG (0.823 mm²). Wire sizes up 
to 12 AWG (3.31 mm²) may be used with the base. 

Make electrical connections by stripping about 

3

/

8

 inch (10 mm) of insulation 

from the end of the wire (use strip gauge molded in base). Then slide the wire 
under the clamping plate and tighten the clamping plate screw. Do not loop 
the wire under the clamping plate. (See Figure 4.)

Check the zone wiring of all bases in the system before installing the detec-
tors. This includes checking the wiring for continuity, correct polarity, ground 
fault testing and performing a dielectric test.

The base includes an area for recording the zone, address, and type of detec-
tor being installed. This information is useful for setting the detector head 
address and for verification of the detector 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.

B300A-6 and B300A-6-IV  

6" Plug-in Detector Bases

6581 Kitimat Road, Unit 6, Mississauga, Ontario L5N-3T5

800/736-7672, FAX: 905-812-0771

www.systemsensor.ca

  

I56-9127-001 

 

 11/17/2017

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