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Trane RTRA Series - Remote CLD

Trane RTRA Series
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17
Remote CLD Panel Wiring
The Remote CLD requires a 24 V power source and a shield-
ed, twisted-pair wire between the panel and the local CLD.
As shown in Figure 12 the wire runs from terminals J3-1
and J3-2 in the unit's buffer module (A55) to terminals J1-
1 and J1-2 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 30V
Attach the shield to a grounding lug in the unit's control
panel. Cut and tape the shield at the Remote CLD panel
Connect the 24V power supply to terminals J2-1 and J2-2
in the Remote CLD panel. The polarity of the of the power
source is not a concern, but the power source must be
grounded to terminal J2-3
Note : A field supplied 24V, 40VA separation trans-
former with electrostatic screen must be used as a
power supply for the Remote CLD.
If the Remote CLD share the 24V power source with other
components, a 24V/24V transformer will be installed before
the Remote CLD to prevent control malfunctions.
Remote CLD Operation
No specific settings are required to used the Remote CLD.
In a multiple configuration, the Remote CLD has the capa-
bility to communicate with up to four units. Each unit
requires a separate communication link with the Remote
CLD panel.
Terminals 1-3 are for the second unit.
Terminals 4-6 are for the third unit.
Terminals 7-9 are for the fourth unit.
Figure 12 : Wiring Diagram CLD Module
No grounded neutral
Note : IPC = Serial link

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