To Wire The Controller To The Bacnet Network; Wiring Devices To The Vvt Zone Ii's Rnet Port - Carrier VVT Zone II Installation And Startup Manual

To wire the controller to the BACnet network

WARNING Attaching any ARCNET or MS/TP network to the Act Net port damages BT485s, DIAG485s, or
terminating resistors on that network.
1
Pull the screw terminal connector from the controller's power terminals labeled Gnd and 24 Vac.
2
Check the communications wiring for shorts and grounds.
3
Connect the communications wiring to the controller's screw terminals labeled Net +, Net -, and Shield.
NOTE Use the same polarity throughout the network segment.
4
Set the communication type and baud rate.
For...
ARC156
MS/TP
NOTE Use the same baud rate for all controllers on the network segment.
5
If the VVT Zone II is at either end of a network segment, connect a BT485 to the VVT Zone II.
6
Insert the power screw terminal connector into the VVT Zone II's power terminals.
7
Verify communication with the network by viewing a Module Status report in the i-Vu® interface.

Wiring devices to the VVT 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.
VVT Zone II Controller
Installation and Start-up Guide
Set BACnet ARC156 or MS/TP
jumper to...
ARC156
MS/TP
13
Set DIP switches 1 and 2 to...
N/A. Baud rate will be 156 kbps regardless of the
DIP switch settings.
The appropriate baud rate. See the MS/TP Baud
diagram on the controller.
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Installing the VVT Zone II
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