Wiring Devices To The Vav Zone Ii's Rnet Port; Wiring Specifications; To Wire Zs Sensors To The Controller - Carrier VAV Zone II Installation And Startup Manual

Wiring devices to the VAV Zone II's Rnet port

The Rnet communicates at a rate of 115 kbps and should be wired in a daisy-chain or hybrid configuration.
Supports up to

5 wireless and/or ZS sensors

One Equipment Touch

One TruVu™ ET Display
For more detailed instructions, see the device's Installation Guide.
CAUTION Rnet power
The Rnet port provides 12 Vdc/200 mA* maximum at 32°F (25°C). that can be used to power zone sensors. If
the total power required by the sensors on the Rnet exceeds the power supplied by the port, use an external
power supply. See the sensor's Installation and Start-up Guide to determine the power required.
* These numbers will be reduced at higher temperatures.

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.
VAV Zone II Controllers
Installation and Start-up Guide
If <100 ft (30.5 meters)
If >100 ft (30.5 meters)
500 feet (152 meters)
17
Installing the VAV Zone II
22 AWG, unshielded
22 AWG, shielded
, or VOC. ZS
2
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