42
Zone Air Temperature Sensor (Carrier ZS2)
The Carrier ZS2 Rnet zone air temperature sensor is used for ap
-
plications requiring SAT reset based on ZAT. See SAT Reset for
details. A ZAT sensor is not required for 62X operation. If a ZAT
sensor is required, it must be field-supplied and installed. The
Rnet communication wire (4 conductor) should be wired to the
Rnet Communication Port on the OEMCtrl OptiCORE LS-
1628u controller. The shield wire and ground wire should be in
-
serted into the controller's GND terminal. Do not mount the sen
-
sor in the same electrical box with line voltage devices. Mount
the sensor 5 ft from the floor. Do not mount the sensor near any
doors, windows, supply air diffusers, or other air disturbances.
See Table 12 for ZAT specifications. See Fig. 64 for ZAT mount
-
ing specifications.
Table 12 — Zone Air Temperature Sensor
Fig. 64 — Zone Air Temperature Sensor Details
INSTALLATION
1. Verify wall or outlet box has been installed.
2. Turn off controller power.
3. Pull the back plate off the ZS sensor. The setscrew in the bot
-
tom of the sensor may need to be turned clockwise until the
back plate can be removed.
4. Pull the Rnet communication cable through the wire guide in
the back plate.
5. Use 2 screws to mount the back plate to the wall or outlet
box. See Fig. 65.
Fig. 65 — Rnet Cable Installation
6. Partially cut, then bend and pull off the outer jacket of the
Rnet cable(s). Do not nick the inner insulation.
7. Strip about 0.25 in. (0.6 cm) of the inner insulation from each
wire. See Fig. 66.
Fig. 66 — Rnet Cable
8. Cut the shield wire off at the outer jacket and then wrap the
cable with tape at the outer jacket to cover the end of the
shield wire.
9. Insert the other 4 wires into the ZS sensor's screw terminal
connector. See Fig. 67.
Fig. 67 — Rnet Terminal Connections
SENSOR NAME
ZS2 Space Temperature Sensor (same as
Carrier ZS sensor)
SENSOR TYPE
Precision Thermistor. Standard accuracy
±0.45°F (0.25°C). Less than ±0.18°F
(0.1 C) drift over a 10-year period
SENSOR RANGE
50°F - 95°F (10°C - 35°C).
POWER
Supplied by the 4-conductor cable
(+12 vdc at 210 mA) from the controller.
COMMUNICATION
115 kbps
ACCESS PORT
Local Rnet Port, for local access to start up
and troubleshoot system
OPERATING RANGE
32-122°F (0-50°C), 10-90% relative
humidity, non-condensing
MOUNTING
Standard 4 x 2-in. electrical box using
provided 6-32 by 1/2 in. mounting screws.
WIRE
Shielded 4 conductor plenum rated, CMP,
18-22 AWG. Maximum 500 ft
DIMENSIONS
Width: 2-3/4 in.
Height: 4-3/4 in.
Depth: 5/8 in.
SETSCREW
LOCAL ACCESS PORT
2.75 in.
(6.9 cm)
4.75 in.
(12.1 cm)
3.30 in.
(8.38 cm)
OUTER JACKET
FOIL SHIELD
INNER INSULATION
0.25 in.
(0.6 cm)
RED
BLK
GRN
WHT
THE FOLLOWING WIRE SCHEME IS RECOMMENDED:
CONNECT THIS WIRE...
TO THIS TERMINAL...
Red
+12V
Black
Rnet-
White
Rnet+
Green
Gnd
