Ccn Communication Bus - Carrier 50TCQD14 Installation Instructions Manual

CCN Communication Bus —
The PremierLinkt controller connects to the bus in a daisy
chain arrangement. Negative pins on each component must
be connected to respective negative pins, and likewise,
positive pins on each component must be connected to
respective positive pins. The controller signal pins must be
wired to the signal ground pins. Wiring connections for CCN
must be made at the 3- - pin plug.
At any baud (9600, 19200, 38400 baud), the number of
controllers is limited to 239 devices maximum. Bus length
may not exceed 4000 ft, with no more than 60 total
devices on any 1000- - ft section. Optically isolated RS- - 485
repeaters are required every 1000 ft.
NOTE: Carrier device default is 9600 baud.
Communications Bus Wire Specifications: The CCN
Communication Bus wiring is field- - supplied and
field- - installed. It consists of shielded 3- - conductor cable
with drain (ground) wire. The cable selected must be
identical to the CCN Communication Bus wire used for
the entire network.
See Table 25 for recommended cables.
Table 25 – Recommended Cables
MANUFACTURER
Alpha
American
Belden
Columbia
NOTE: Conductors and drain wire must be at least 20
AWG, stranded, and tinned copper. Individual conductors
must be insulated with PVC, PVC/nylon, vinyl, Teflon*,
or polyethylene. An aluminum/polyester 100% foil shield
and an outer jacket of PVC, PVC/nylon, chrome vinyl, or
Teflon with a minimum operating temperature range of
- - 20_C to 60_C is required. Do not run communication
wire in the same conduit as or next to any AC voltage
wiring.
* Teflon is a registered trademark of DuPont.
CABLE PART NO.
2413 or 5463
A22503
8772
02525
The communication bus shields must be tied together at
each system element. If the communication bus is entirely
within one building, the resulting continuous shield must
be connected to ground at only one single point. If the
communication bus cable exits from one building and
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 26 for the recommended color code.
Table 26 – Color Code Recommendations
CCN BUS WIRE
SIGNAL TYPE
+
Ground
---
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. 64.
CCN Bus
+ (RED)
GND (WHT)
– (BLK)
Fig. 64 - - PremierLink Controller CCN Bus
Connections
49
CCN PLUG PIN
COLOR NUMBER
Red 1
White 2
Black 3
TB1
12
TB1
14
TB1
16
PL
J2-1
J2-2
J2-3
C08276