8
You can install the RC642 or the RC642D Room Controller as part of a WebCTRL system.
NOTE If needed, the Room Controller has a secondary backplate that you can mount
behind it to cover certain junction boxes.
1 Pull the backplate off the Room Controller. If necessary, turn the setscrew in the
bottom of the Room Controller clockwise until you can remove the backplate.
2 Pull the power, communication, and input/output cables through the rectangular
opening in the backplate (and the secondary backplate if you are using it).
3 Use screws to mount the backplate to a junction box. The holes in the backplate
accommodate most standard junction boxes.
4 After you connect the power (page 8), communication (page 10), and input/output
(page 13) wiring to the Room Controller, attach its cover and circuit board to the
mounted backplate.
5 Turn the setscrew one full turn counterclockwise so that the cover cannot be
removed.
CAUTIONS
• The Room Controller is powered by a Class 2 power source. Take appropriate
isolation measures when mounting it in a control panel where non-Class 2 circuits are
present.
• ALC controllers can share a power supply as long as you:
○ Maintain the same polarity.
○ Use the power supply only for ALC controllers.
1 Remove power from the Room Controller.
2 Unplug the Comm/24 Vac screw terminal connector from the back of the Room
Controller.
METHOD A: Installing a Room Controller in a WebCTRL system
To mount the Room Controller
To wire for power
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