9
Table 1
Connecting terminal
X1/X2
D1/D2
CN2
2nd generation
DC IDU
О
X
X
One or two wired controllers used to control one IDU, implementing
two-way communication.
О
О
X
Two wired controllers used to control one or multiple IDUs,
implementing two-way communication.
Non 2nd generation
DC IDU
X
X
О
One wired controller used to control one IDU, implementing one-way
communication.
О: connected
X: not connected
2-5-3 For the 2nd generation DC IDU, the wired controller connects to the IDU X1 and X2 ports through the X1 and X2 ports. There is no polarity
between X1 and X2. See Fig. 8.
Fig. 8
Indoor Unit
Wired Controller
Summary of Contents for KCT-03 SRPS
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