Ics Address Setting; Multiple Unit Operation - Trane RTAA-70 Installation & Maintenance Manual

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Installation — Electrical
Figure 30 Shielded, Twisted Pair Communication LInk at the
Remote CLD Panel
Connect the 24 VAC power supply to terminals J2A and J2B in the Remote
CLD panel. The polarity of the power source is not a concern, but the power
source must be grounded to terminal J2Gnd.
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 of 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.
Terminal strip TB4 is used to wire in the second, third and fourth units to the
Remote CLD. TB4 is labeled as shown below:
Terminals 1-3 are for the second unit.
Terminals 4-6 are for the third unit.
Terminals 7-9 are for the fourth unit.
RTAA-SVX01A-EN