65-2649SS-CH4-4 M2A Transmitter Operator’s Manual
17
13. Pull out the detector terminal strip and connect the four wires to the terminal strip as follows (see Figure 7).
•
Connect the wire corresponding to the detector’s red wire to the
LEL “R”
terminal.
•
Connect the wire corresponding to the detector’s white wire to the
LEL “W”
terminal.
•
Connect the wire corresponding to the detector’s green wire to the
LEL “G”
terminal.
•
Connect the wire corresponding to the detector’s black wire to the
LEL “B”
terminal.
CAUTION:
If shielded cable is used, leave the cable shield’s drain wire disconnected and insulated at the
detector junction box. You will connect the opposite end of the cable’s drain wire to the M2A
junction box’s chassis (earth) ground.
Figure 7: Wiring the Detector to the M2A
14. Reinstall the detector terminal strip into its socket.
15. If shielded cable is used between the detector junction box and the M2A junction box, connect the cable’s
drain wire to an available chassis (earth) ground at the M2A junction box. Do not connect the shield drain
wire at the detector junction box.
C
NC
NO
AL
A
R
M
1
C
N
C
NO
AL
A
R
M
2
C
NC
N
O
FA
IL
Detector
Term inal
Strip
Install conduit seal
within 18 inches
Red
White
G reen
Black
Cable
Shi eld
IR LEL Detector
Detector J-Box
Install conduit seal within
2 inches (for G roup B
environments) or 18
inches (for G roups C and
D env ironm ents)
Black
Red
G reen
W hite
Calibrati on Adapter/Splash G uard
M2A
J-Box
-
S
+
A
B
C
RS
4
8
5
PW
R
/S
I
G
R
W
G
B
LE
L
