Wiring Specifications; To Wire Zs Sensors To The Controller - Carrier VVT Zone II Installation And Startup Manual

Installing the VVT Zone II

Wiring specifications

Cable from sensor to controller:
Maximum length:

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 VVT Zone 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 VVT Zone II.
VVT Zone II Controller
Installation and Start-up Guide
Outer Jacket
Inner insulation
To this terminal...
+12V
Rnet-
Rnet+
Gnd
If <100 ft (30.5 meters)
If >100 ft (30.5 meters)
500 feet (152 meters)
14
22 AWG, unshielded
22 AWG, shielded
, or VOC. ZS
2
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