Carrier WeatherMaster 50HC14 Installation Instructions Manual page 48

SPACE SENSORS
The PremierLink™ controller is factory-shipped config-
ured 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 and it allows for
adjustment of space temperature setpoints from the face of
the sensor by the occupants.
1 2 3 4 5
SEN
SW1
BRN (GND)
BLU (SPT)
Fig. 63 — T-55 Space Temperature Sensor Wiring
Connect T-55
See Fig. 63 for typical T-55 internal connections. Connect
the T-55 SEN terminals to TB3 terminals 1 and 3 (see
Fig. 64).
SEN
SEN
Fig. 64 — PremierLink Controller T-55 Sensor
Connect T-56
See Fig. 65 for T-56 internal connections. Install a jumper
between SEN and SET terminals as illustrated. Connect T-56
terminals to TB3 terminals 1, 3 and 5 (see Fig. 66).
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 CTBT's THERMOSTAT connection strip for these.
Connect the thermostat's Y1, Y2, W1, W2 and G terminals to
PremierLink TB3 as shown in Fig. 67.
If the 50HC**14 unit is equipped with factory-installed
smoke detector(s), disconnect the factory BLU lead at TB3-6
(Y2) before connecting the thermostat. Identify the BLU lead
originating at CTB-DDC-1; disconnect at TB3-6 and tape off.
Confirm that the second BLU lead at TB3-6 remains connect-
ed to PremierLink J4-8.
If the 50HC**14 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
6
RED(+)
WHT(GND)
CCN COM
BLK(-)
SENSOR WIRING
TB3 PL
1
J6-7
J6-6
3
Fig. 63) 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 TB3-1 and TB3-3 per Fig. 64.
1 2 3 4
SEN
SW1
Cool
Fig. 65 — T-56 Internal Connections
SEN
SEN
Jumper
SET
SET
Fig. 66 — PremierLink Controller T-56 Sensor
SPACE
THERMOSTAT
R
G
Y1
Y2
W1
W2
C
Fig. 67 — Space Thermostat Connections
48
5 6
RED(+)
WHT(GND)
CCN COM
BLK(-)
SET
BLK
(T56)
BRN (GND)
SENSOR WIRING
BLU (SPT)
JUMPER
TERMINALS
AS SHOWN
Warm
TB3
1
TB3
3
5
CTB
THERMOSTAT
R
TB3
2
4
6
8
10
CTB
C
THERMOSTAT
PL
J6-7
PL
J6-6
J6-5
PL
J4-12
J4-10
J4-8
J4-6
J4-4