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4
Set the communication type and baud rate.
For...
MS/TP
ARC156
NOTE Use the same baud rate for all controllers on the network segment.
5
Wire the controllers on a BACnet MS/TP or BACnet ARC156 network segment in a daisy-chain configuration.
6
If the controller is at either end of a network segment, connect a BT485 to the controller.
7
Insert the power screw terminal connector into the controller's power terminals.
8
Verify communication with the network by viewing a Module Status report in the i-Vu® interface.
Wiring inputs and outputs
WARNING Do not apply line voltage (mains voltage) to the controller's ports and terminals.
See Appendix A (page 30) to print a blank wire list.
Inputs and outputs table
I/O
Type
RH Sensor
AI
IN-1
AI Setpoint
AI
IN-2
OAT Sensor
AI
IN-3
Leaving Chilled
AI
IN-4
Water Header
Temp
Ext Demand
B1
IN-5
Limit
30MP Multi-chiller
Installation and Start-up Guide
Set Communications
Selection jumper to...
BACnet MS/TP
BACnet ARC156
I/O
Gnd
Point Name/
Terminal
Terminal
Function
2 - Gnd
RH sensor
4 - Gnd
External AI Chilled Water Setpoint
6 - Gnd
Outdoor Air Temperature
8 - Gnd
Leaving Chilled Water Header Temperature 5K Thermistor
1 - Gnd
External Demand Limit Input
Set DIP switches 1 and 2 to...
The appropriate baud rate. See the
MS/TP Baud diagram on the
controller.
N/A. Baud rate will be 156 kbps
regardless of the DIP switch
settings.
7
Installing the controller
Set DIP switches 3 and 4 to...
Off/Off
Off/Off
Hardware/
Jumper
Position of
Signal
Pins
0-5 Vdc
IN-1
Bottom
0-5 Vdc
IN-2
Bottom
10K Thermistor
N/A
N/A
Dry Contact
N/A
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