18
65-2643RK-05-04 M2A Transmitter Operator’s Manual
14. Pull out the detector terminal strip and connect the two wires to the terminal strip as follows (see Figure 8).
•
Connect the wire corresponding to the detector’s green wire to the
OXY “-”
terminal.
•
Connect the wire corresponding to the detector’s white wire to the
OXY “+”
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 8: Wiring the Detector to the M2A
15. Reinstall the detector terminal strip into its socket.
16. 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.
W hite
C able
Shield
Green
C
NC
N
O
AL
A
R
M
1
C
NC
NO
AL
A
R
M
2
C
NC
NO
FA
IL
-
S
+
T
O
X
IC
O
X
Y
PW
R
/S
IG
+
+
D etector
Termin al
Strip
Gree n
M2 A
J-Box
D et ector J -Box
C alib ration Adap te r/Splash G ua rd
Ox ygen D et ector
Insta ll c onduit seal
wit hin 18 i nches ( do
not install dete ctor in
env ironme nt w ith
a cetic a cid)
In stall c ond uit sea l w ithin
2 inc hes ( for G roup B
env iron ment s) o r 1 8
inch es ( f or G roups C and
D e nv iron ments)
W hite
A
B
C
RS
4
85
