RKI Instruments 61-1007RKSS - Manual (Page 9)

61-1007RKSS Carbon Dioxide Gas Detector • 5
2. At the mounting site you select, hang or mount the junction box with the detector
facing down (see Figure 3).
Wiring the CO
2
Detector to a Controller
WARNING: Always verify that the power to the controller is off before you make
wiring connections.
1. Turn off the controller.
2. Turn off or unplug power to the controller.
3. Remove the cover from the junction box.
4. Guide a four-conductor, shielded cable or four wires in conduit through the top
conduit hub of the junction box. Use appropriate conduit fittings and construction
technique for the environmental rating of the junction box. The junction box is rated
NEMA 4X.
5. Connect the wires to the terminals opposite the detector leads.
CAUTION: Leave the shield drain wire insulated and disconnected at the 61-1007RKSS. You
will connect the opposite end of the cable’s drain wire at the controller.
6. Secure the junction box cover to the junction box.
7. Route the cable or wires in conduit leading from the detector through one of the
conduit hubs at the controller. Use appropriate conduit fittings and construction
technique for the environmental rating of the controller. RKI controllers are typically
rated NEMA 4X.
CAUTION: Do not route power and detector wiring through the same conduit hub. The power
cable may disrupt the transmission of the detector signal to the controller.
8. Connect the wires to the applicable controller terminal strip. See the controller
operator’s manual and the controller’s detector head specification sheet for the
61-1007RKSS detector.