M2A-XL Transmitter Operator’s Manual
Chapter 3: Installation & Startup
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CT-7 Series Toxic Detectors
The CT-7 Series toxic detectors have one black wire and one color coded wire. Connect the color
coded wire (see chart below) to the terminal labeled TOXIC + and the black wire to the terminal
labeled TOXIC -.
Figure 29: CT-7 Series Toxic Detector Wiring
6. To gain access to a plug-in terminal strip for wiring, pull it out of its socket by grasping the
wall between two terminal positions with needle nose pliers and pulling. Be careful not to
exert too much force on the wall to avoid damage to the terminal strip. The detector terminal
strip and the alarm 1 relay terminal strip may be removed by grasping them with your fingers
if the adjacent terminal strips have been removed.
WARNING: If the M2A-XL is installed in a hazardous location, use appropriately rated
conduit, conduit fittings, and appropriate construction technique that
complies with the local electrical code.
In addition, use appropriately rated conduit, conduit fittings, and appropriate
construction technique to maintain the NEMA 4X environmental rating of
the junction box and avoid water entering the junction box at the conduit
ports.
FA
IL
Not
Used
C
N
C
N
O
S
PW
R
/
S
IG
A
B
C
AL
AR
M
2
C
N
C
N
O
RS
4
8
5
TOX
IC
OX
Y
Black
C
NC
NO
AL
A
R
M
1
HCN
white
NH3
red
CL2
yellow
CLO2
v iolet
blue
SO2
See Chart
Gas Type + Wire
