Carrier 50TCQD Installation Instructions Manual page 27

enters another building, the shields must be connected to
the grounds at a lightning suppressor in each building (one
point only).
Connecting CCN bus:
NOTE: When connecting the communication bus cable,
a color code system for the entire network is
recommended to simplify installation and checkout. See
Table 7 for the recommended color code.
Table 7 – Color Code Recommendations
CCN BUS WIRE
SIGNAL TYPE
COLOR
+
Ground White
--- Black
CCN PLUG PIN
NUMBER
Red 1
2
3
Connect the CCN (+) lead (typically RED) to the unit's
TB1- - 12 terminal. Connect the CCN (ground) lead
(typically WHT) to the unit's TB1- - 14 terminal. Connect
the CCN (- - ) lead (typically BLK) to the unit's TB1- - 16
terminal. See Fig. 45.
CCN Bus
+ (RED)
GND (WHT)
– (BLK)
Fig. 45 - - PremierLink CCN Bus Connections
27
TB1
PL
12 J2-1
TB1
14 J2-2
TB1
J2-3
16
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