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HD Display
Subbase
PROVIDED RAST
6-PIN CONNECTOR
Figure 10. 4SCU23LX with Comfort Sync A3 Communicating Thermostat – Field Wiring
508296-01
DATS (Optional)
OATS (Optional)
C
i-
i+
R
A3 Smart Hub
Single Wire To
C Terminal
Unused Wires
Communicating
Indoor Unit
INDOOR CONTROL
Indoor Control
Issue 2231
RAST 6-Pin
Connectors
W
L
Y2
Y1
O
DS
DF
TST
Outdoor Unit
Single Wire To C Terminal
Unused Wires
Page 17 of 25
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