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Refer to the PremierLink Controller Installation, Start-up,
and Configuration Instructions for additional information on
configuring the PremierLink controller for Door Switch timer
function.
POWER EXHAUST (OUTPUT) — Connect the accessory
Power Exhaust contactor coil(s) per Fig. 68.
Power Exhaust
PEC
TAN
GRA
Fig. 68 — PremierLink Controller Power Exhaust
Output Connection
NOTE: The Power Exhaust and Humidi-MiZer
options can not be used with PremierLink™ controls at the
same time as both options require connection at TB1-15 (AUX
OUT).
CCN COMMUNICATION BUS — The PremierLink con-
troller connects to the bus in a daisy chain arrangement. Nega-
tive 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 con-
trollers 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 re-
quired every 1000 ft.
NOTE: Carrier device default is 9600 baud.
Communications Bus Wire Specifications
Communication Bus wiring is field-supplied and field-in-
stalled. 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 26 for recommended cable.
Table 26 — 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 polyeth-
ylene. 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.
TB1
PL
15
J8-3
CTB
THERMOSTAT
C
®
system
The CCN
—
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 communi-
cation 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 27 for the recom-
mended color code.
Table 27 — Color Code Recommendations
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. 69.
CCN Bus
+ (RED)
GND (WHT)
– (BLK)
Fig. 69 — PremierLink Controller CCN Bus
RTU Open Controller System —
controller is factory-mounted in the 48HC unit's main control
box (see Fig. 71), to the left of the CTB. Factory wiring is com-
pleted through harnesses connected to the CTB. Field-connec-
tions for RTU Open controller sensors will be made at the
Phoenix connectors on the RTU Open board. The factory-in-
stalled RTU Open controller includes the supply-air tempera-
ture (SAT) sensor. The outdoor air temperature (OAT) sensor is
included in the FIOP/accessory EconoMi$er2 package.
The RTU Open controller is an integrated component of the
Carrier rooftop unit. Its internal application programming pro-
vides optimum performance and energy efficiency. RTU Open
enables the unit to run in 100% stand-alone control mode, Car-
rier's i-Vu
®
Open network, or a Third Party Building Automa-
tion System (BAS). On-board DIP switches allow you to select
your protocol (and baud rate) of choice among the four most
popular protocols in use today: BACnet*, Modbus†, Johnson
N2 and LonWorks**. (See Fig. 70.)
Refer to Table 28, RTU Open Controller Inputs and Outputs
for locations of all connections to the RTU Open controller
board.
*
BACnet is a registered trademark of ASHRAE (American Soci-
ety of Heating, Refrigerating and Air-Conditioning Engineers).
†
Modbus is a registered trademark of Schneider Electric.
**
LonWorks is a registered trademark of Echelon Corporation.
50
CCN BUS WIRE
CCN PLUG PIN
COLOR
NUMBER
Red
1
White
2
Black
3
TB1
12
TB1
14
TB1
16
Connections
The RTU Open
PL
J2-1
J2-2
J2-3
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