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Installing the Zone Ctrl II
To wire ZS sensors to the controller
ZS Sensors are thermistor-based temperature sensors that may optionally sense humidity, CO
Sensors are wired to the Rnet port on i-Vu® Open controllers.
You can use the following ZS sensors:
•
ZS Standard
•
ZS Plus
•
ZS Pro
NOTE The ZS CO2 model uses 190 mA during sample period. Use auxiliary 12 Vdc, unless it is the only device on
the Rnet port.
1
Remove power from the Zone Ctrl II.
2
Partially cut, then bend and pull off the outer jacket of the Rnet cable(s). Do not nick the inner insulation.
Strip about .25 inch (.6 cm) of the inner insulation from each wire.
.25 in.
(.6 cm)
3
Wire each terminal on the sensor to the same terminal on the controller. See diagram below.
NOTE Carrier recommends that you use the following Rnet wiring scheme:
Connect this wire...
Red
Black
White
Green
4
Apply power to the Zone Ctrl II.
Zone Ctrl II and
VAV Zone II Secondary Duct Installation and Start-up Guide
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Outer Jacket
Inner insulation
To this terminal...
+12V
Rnet-
Rnet+
Gnd
20
, or VOC. ZS
2
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