Carrier WeatherExpert 48JC04 Installation Instructions Manual page 21

Fig. 38 shows the wiring connections from the accessory space
temperature sensors to the SystemVu MBB.
SYSTEMVU MBB
VDC 6
TB5
AI-06 5
GND 4
AI-05 3
GND 2
AI-04 1
Fig. 38 — Typical Low Voltage SPT Connections
Resistive Non-Communicating Sensor Wiring
For sensor with setpoint adjustment up to 1000 ft (305m), use
three-conductor shielded cable 20 gauge wire to connect the
sensor to the controller. For non set point adjustment (slidebar)
or return air duct sensor, an unshielded, 18 or 20 gauge, two-
conductor, twisted pair cable may be used.Refer to Fig. 39 and
40 for typical connections at the sensor.
1 2 3 4 5
SEN
SW1
Cool
Fig. 39 — Space Temperature Sensor Typical Wiring
(33ZCT56SPT)
Space Temperature Sensor (T-55)
The T-55 space temperature sensor (part no. 33ZCT55SPT) is a
field-installed accessory. The sensor is installed on a building in-
terior wall to measure room air temperature. The T-55 sensor
also includes an override button on the front cover to permit oc-
cupants to override the Unoccupied Schedule (if programmed).
TB5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sensor Input
TB5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sensor Common
SPTO
T-56
ACCY
SPT
6
SET
BLK
(T56)
BRN (GND)
SENSOR WIRING
BLU (SPT)
JUMPER
TERMINALS
AS SHOWN
Warm
Space Temperature Sensor (T-56)
The T-56 space temperature sensor (part no. 33ZCT56SPT) is a
field-installed accessory. This sensor includes a sliding scale
on the front cover that permits an occupant to adjust the space
temperature set point remotely. The T-56 sensor also includes
an override button on the front cover to allow occupants to
override the unoccupied schedule (if programmed).
TB5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sensor Input
TB5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sensor Common
TB5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . Setpoint Offset Input
OR SET SEN
OPB COM- PWR+
NOTE: Must use a separate isolated transformer.
Fig. 40 — Space Temperature Sensor Typical Wiring
ZS Space Sensors
The ZS Standard, Plus, or Pro can be wired into J20 or J24 of
the SystemVu controller. J20 provides an easy field connection
plug. A maximum of 5 ZS sensors can be connected but a sep-
arate power supply may be needed. Use the ZS SENSOR CFG
menu (SETTINGS  NETWORK SETTINGS) when setting
up the ZS sensors in SystemVu. The Sensor addresses have to
be unique and set in the actual sensors via DIP also. The Typi-
cal default for the ZS Sensor is address 1. Follow the ZS instal-
lation instruction for further details on the sensors. ZS sensor
data can be monitored on the SystemVu controller display in
the ZS Sensor Info menu (INPUTS  NETWORK 
ZS SENSOR INFO).
NOTE: Additional ZS sensors must be addressed. Use the jump-
ers on the ZS sensor's circuit board and refer to the sensor installa-
tion instructions for addressing.
For Rnet wiring up to 500ft (152m), use 18 AWG 4 conductor
unshielded plenum rated cable. The SystemVu controller
J20-RNET connection has a 4 pin PCB connector. Fig. 41
shows sensor Rnet wiring.
J20-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sensor Common
J20-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sensor Positive (+)
J20-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sensor Negative (-)
J20-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sensor +12vdc Power
21
BLK (STO)
J20-3
BRN (COM)
SENSOR
J20-2
WIRING
BLU (SPT)
J20-1
POWER
WIRING
24 VAC
(33ZCT59SPT)