Trane R Series, Installation Operation & Maintenance

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RLC-SVX07A-EN 79
Installation - Electrical
NOTE: If an electrical box is to be used, attach it to the display box with
screws through the four mounting slots around the knockout.
The top of the display box is marked “TOP”. Note the position of the box
before mounting it to the surface. With the box in the desired position against
the mounting surface, mark the location of the mounting holes.
Remove the box and drill the necessary holes in the surface. Put the display
box back in position and secure it to the mounting surface with the required
screws.
The keypad board can now be swung back into position and secured.
Remote CLD Panel Wiring
The Remote CLD requires a 24-volt power source and a shielded, twisted-pair
wire between the panel and the Clear Language Display. See
Figure 34 .
As shown in Figure 34 , the wire runs from terminals J3A-1(+) and J3A2(-) in
the unit's buffer module (1U7) to terminals (+) and (-) in the Remote CLD. Be
sure that one lead is connected to the (+) terminal at each end and the other
lead is connected to the (-) terminal at each end.
Do not run the shielded, twisted-pair wire in a conduit that also contains
circuits of greater than 30 volts. Attach the shield to a grounding lug in the
Remote CLD Panel. Cut and tape the shield at the Unit Control Panel, as
shown in
Figure 33 .
NOTE: Shielding of the twisted pair can be grounded at either the Unit
Control Panel or the Remote CLD Panel as long as both sides are NOT
grounded.
Connect the 24-volt power supply to terminals J2-A and J2-B in the Remote
CLD panel. The polarity of the power source is not a concern, but the power
source must be grounded to terminal J2 GND.
NOTE: A field-supplied Class 2, 24 VAC, 40 VA transformer can be used as a
power supply for the Remote CLD Panel.
NOTE: Both a Remote CLD and a Tracer unit can be connected to the UCM.
ICS Address Setting
The setting if the ICS address for the Remote CLD is not necessary.
Multiple Unit Operation
In a multiple unit configuration, the Remote CLD panel has the capability to
communicate with up to four units. Each unit requires a separate communi-
cation link with the Remote CLD panel.
Figure 33 Shielded, Twisted Pair Communication LInk at the
Remote CLD Panel
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