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2W-BLX AND 2WT-BLX INSTALLATION GUIDE | DIGITAL MONITORING PRODUCTS
MOUNT THE DETECTOR
Wiring the Detector
1. Pull wire through electrical box, then through the
detector’s mounting base center opening.
2. Connect the 4-wire harness to the 4-pin header
according to the wiring diagram in Figure 4.
Note:
Tie the red wire (smoke power) to the smoke
terminal (SMK) of the panel. The other wires
go to the LX-Bus™ for addressing.
4
5
TEST THE DETECTOR
Detectors must be tested after installation and following maintenance. After power up, allow 80 seconds for
the detector to stabilize before testing.
Figure 4: 2W-BLX/2WT-BLX Wiring
Black
(common)
Green
(data)
Yellow
(data)
Red
(smoke power)
To LX-Bus
S2
0
1 2
3
4
5
6
7
8
9
S1
TENS
J3
0
1 2
3
4
5
6
7
8
9
ONES
A
B
Figure 5: Mounting Detector Head
Figure 6: Sensitivity Testing
the 2W-BLX/2WTBLX
Push resessed
switch with a
0.18” maximum
diameter tool
Sensitivity Test Switch
1. Insert a small screwdriver or allen wrench (0.18”
max.) into the test switch opening located on the
detector housing. Push and hold (See Figure 6).
2. If the detector is within the listed sensitivity limits,
the detector’s Red LED should turn on within five
seconds.
3. To measure the detector’s sensitivity, use the
System Sensor i
3
Series Model SENS-RDR Infrared
Sensitivity Reader® tool.
Smoke Entry Test
Hold a smoldering stick or cotton wick at the side of the
detector and gently blow through the detector until it
alarms.
Caution:
Be sure to properly extinguish the smoke
source after testing.
Direct Heat Method (Model 2WT-BLX only)
Direct the heat of a 1000-1500 watt hair dryer toward either of the thermistors. Thermistors are located on
each side of the screen/sensing chamber. Hold the heat source about 12 inches from the detector to avoid
damage to the plastic.
Note:
For the above tests, the detector will reset only after a Sensor Reset is performed.
If the detector fails any of the above tests, check the wiring and clean the detector as outlined in the
Maintenance Section. If the detector still fails, it should be replaced.
Mounting the Detector
1. Place detector on the base and rotate clockwise.
The detector will drop into the base and lock into
place with a click. See Figure 5.
2. After all the detectors have been installed, apply
power to the control panel.
