Carrier 50HCQ - Space Sensors and Thermostat Connections; Configure Unit for Thermostat Mode

30
Space Sensors —
The PremierLinkt controller is factory−shipped configured
for Space Sensor Mode. A Carrier T−55 or T−56 space
sensor must be used. T−55 space temperature sensor
provides a signal of space temperature to the PremierLink
controller. T−56 provides same space temperature signal plus
it allows for adjustment of space temperature setpoints from
the face of the sensor by the occupants.
2
3
45
61
SW1
SEN
BRN (GND)
BLU (SPT)
RED(+)
WHT(GND)
BLK(-)
CCN COM
SENSOR WIRING
C08201
Fig. 41 − T−55 Space Temperature Sensor Wiring
Connect T−55: See Fig. 41 for typical T−55 internal
connections. Connect the T−55 SEN terminals to TB1
terminals 1 and 3 (see Fig. 42).
SEN J6-7
J6-6
1
3
TB1 PL
SEN
C08212
Fig. 42 − PremierLink Controller T−55 Sensor
Connect T−56: See Fig. 43 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. 44).
2
3
45
61
SW1
SEN
SET
Cool Warm
BRN (GND)
BLU (SPT)
RED(+)
WHT(GND)
BLK(-)
CCN COM
SENSOR WIRING
JUMPER
TERMINALS
AS SHOWN
BLK
(T56)
C08202
Fig. 43 − T−56 Internal Connections
SEN J6-7
J6-6
1
3
TB1 PL
SEN
SET
Jumper
TB1
PL
J6-5
5
SET
C08213
Fig. 44 − PremierLink Controller 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. 45.
If the 50HCQ unit is equipped with factory−installed
smoke detector(s), disconnect the factory BLU lead at
TB1−6 (Y2) before connecting the thermostat. Identify the
BLU lead originating at CTB−DDC−1; disconnect at
TB1−6 and tape off. Confirm that the second BLU lead at
TB1−6 remains connected to PremierLink J4−8.
GJ4-12
J4-10
J4-8
Y1
Y2
2
R
R
4
6
J4-6
J4-4
W2
C
8
10
C
SPACE
THERMOSTAT
PL
CTB
THERMOSTAT
W1
TB1
CTB
THERMOSTAT
C08119
Fig. 45 − Space Thermostat Connections
If the 50HCQ 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. 41) installed in the space or in the
return duct, or it may be sensor P/N 33ZCSENSAT,
installed in the return duct. Connect this sensor to TB1−1
and TB1−3 per Fig. 42.
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 controller 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).
50HCQ