Carrier 50TC*D17 Series Installation Instructions Manual page 21

Connect T- - 56 - - See Fig. 29 for T- - 56 internal
connections. Install a jumper between SEN and SET
terminals as illustrated. Connect T- - 56 terminals to TB1
terminals 1, 3 and 5 (see Fig. 30).
1 2 6
3 4 5
WHT(GND)
SEN SET
SW1
BRN (GND)
BLU (SPT)
Cool Warm
Fig. 29 - - T- - 56 Internal Connections
SEN
SEN
Jumper
SET
SET
Fig. 30 - - PremierLink T- - 56 Sensor
Connect Thermostat — A 7- - wire thermostat connection
requires a 24- - v power source and a common connection.
Use the R and C terminals on the CTB's THERMOSTAT
connection strip for these. Connect the thermostat's Y1,
Y2, W1, W2 and G terminals to PremierLink TB1 as
shown in Fig. 31.
SPACE
THERMOSTAT
THERMOSTAT
R
G
Y1
Y2
W1
W2
C
Fig. 31 - - Space Thermostat Connections
RED(+)
CCN COM
BLK(-)
BLK
(T56)
SENSOR WIRING
JUMPER
TERMINALS
AS SHOWN
C08202
TB1 PL
1 J6-7
PL
TB1
J6-6
3
J6-5
5
C08213
CTB
R
TB1
PL
2 J4-12
J4-10
4
J4-8
6
J4-6
8
J4-4
10
CTB
C
THERMOSTAT
C08119
If the 50TC*D unit has an economizer system and
free- - cooling operation is required, a sensor representing
Return Air Temperature must also be connected
(field- - supplied and installed). This sensor may be a T- - 55
Space Sensor (see Fig. 28) installed in the space or in the
return duct, or it may be sensor PNO 33ZCSENSAT,
installed in the return duct. Connect this sensor to TB1- - 1
and TB1- - 3 per Fig. 28.
Configure the unit for Thermostat Mode — Connect to the
CCN bus using a CCN service tool and navigate to
PremierLink Configuration screen for Operating Mode.
Default setting is Sensor Mode (value 1). Change the
value to 0 to reconfigure the controller for Thermostat
Mode.
When the PremierLink is configured for Thermostat
Mode, these functions are not available: Fire Shutdown
(FSD), Remote Occupied (RMTOCC), Compressor Safety
(CMPSAFE), Supply Fan Status (SFS), and Filter Pressure
Switch (FILTER).
Economizer controls —
Outdoor Air Enthalpy Control (PNO 33CSENTHSW) - -
The enthalpy control (33CSENTHSW) is available as a
field- - installed accessory to be used with the EconoMi$er2
damper system. The outdoor air enthalpy sensor is part of
the enthalpy control. (The separate field- - installed
accessory return air enthalpy sensor (33CSENTSEN) is
required for differential enthalpy control. See Fig. 32.)
Locate the enthalpy control in the economizer next to the
Actuator Motor. Locate two GRA leads in the factory
harness and connect the gray lead labeled "ESL" to the
terminal labeled "LOW". See Fig. 32. Connect the
enthalpy control power input terminals to economizer
actuator power leads RED (connect to 24V) and BLK
(connect to GND).
Enthalpy
Switch
24V
GND
LOW
Fig. 32 - - Enthalpy Switch (33CSENTHSW) Connections
21
RED
ECONO
MOTOR
BLK
CTB
GRA 7
ESL
ECON
Factory Wiring Harness
C09026