RKI Instruments 65-2427RKSS-05 - Manual (Page 10)

6 • 65-2427RKSS-05 H
2
S Detector
4. Guide a two-conductor, shielded cable or two wires in conduit through an unused
conduit hub of the junction box. Use appropriate conduit fittings and construction
technique for the environmental and hazardous location rating of the junction box.
The junction box is rated NEMA 4X and Class 1, Division 1, Groups B, C, D.
5. Connect the two wires to the detector using the 2 point terminal block.
CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the
detector. 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 leading from the H
2
S detector through one of the conduit
hubs at the controller housing. 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.