Carrier UC Open XP, Installation And Startup Manual, Page: 14 / 44

UC Open XP installation
10 UC Open XP/UC Open XP IO
Wiring the UC Open XP for power
The UC Open XP is powered by a Class 2 power source. Take appropriate isolation measures when
mounting it in a control panel where non-Class 2 circuits are present.
Carrier controllers can share a power supply as long as you:
• Maintain the same polarity
• Use the power supply only for Carrier Open controllers
To wire for power
1
Turn off the UC Open XP's power switch to prevent it from powering up before you can verify the correct
voltage.
2
Remove primary power from the 24 Vac transformer.
3
Pull the screw terminal connector from the controller's power terminals labeled Gnd and 24 Vac.
4
Connect the transformer wires to the screw terminal connector.
5
Apply primary power to the transformer.
6
Measure the voltage at the UC Open XP's power screw terminal connector to verify that the voltage is
within the operating range of 21.6 - 26.4 Vac.
7
Insert the screw terminal connector into the UC Open XP's power terminals.
8
Turn on the UC Open XP's power switch.
9
Verify that the Power LED is on and the Run LED is blinking.
To set the UC Open XP's address
The UC Open XP's two rotary switches determine the UC Open XP's MAC address when it is placed on a
BACnet MS/TP network. The rotary switches define the MAC address portion of the device's BACnet address,
which is composed of the network address and the MAC address.
1
Turn off the UC Open XP's power switch.
2
Using the rotary switches, set the controller's address. Set the Tens ( 10's ) switch to the tens digit of the
address, and set the Ones ( 1's ) switch to the ones digit.