Installing the VVT Zone II
VVT Zone II Controller
CARRIER CORPORATION ©2019
Installation and Start-up Guide
All rights reserved
13
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...
Set BACnet ARC156 or MS/TP
jumper to...
Set DIP switches 1 and 2 to...
ARC156
ARC156
N/A. Baud rate will be 156 kbps regardless of the
DIP switch settings.
MS/TP
MS/TP
The appropriate baud rate. See the
MS/TP Baud
diagram on the controller.
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.
Содержание VVT Zone
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