RKI Instruments 65-2435RK - Manual (Page 8)

8 • 65-2435RK CO Transmitter
Wiring the CO Transmitter to a Controller
WARNING: Always verify that the power source is OFF before you make wiring connections.
1. Turn off the controller.
2. Turn off or unplug incoming power at the power source end.
3. Remove the junction box cover.
4. Verify that the detector leads are wired to the amplifier’s terminal strip. If necessary, connect
the detector leads to the terminal strip as shown in Figure 3.
5. Guide a two-conductor, shielded cable or two wires in conduit through the top conduit hub of
the junction box.
6. Connect the two wires to the terminal strip as follows (see Figure 3.)
• Connect the positive wire to the terminal labeled 24V.
• Connect the feedback wire to the terminal labeled FB.
CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the
transmitter. You will connect the opposite end of the cable’s drain wire at the
controller.
7. Secure the junction box cover to the junction box.
8. Route the cable or wires leading from the CO transmitter through one of the conduit hubs at the
controller housing.
CAUTION: Do not route power and transmitter wiring through the same conduit hub. The power
cable may disrupt the transmission of the transmitter signal to the controller.