Carrier UC Open Installation manual

U
UC C O Op pe en n
I
In ns st ta al ll la at ti io on n a an nd d S St ta ar rt t- -u up p G Gu ui id de e
CARRIER CORPORATION ©2019
A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 11-808-464-01 · 1/25/2019

Verify that you have the most current version of this document from
www.hvacpartners.com
or your local Carrier
office.
Important changes are listed in
Document revision history
at the end of this document.
CARRIER CORPORATION ©2019. All rights reserved throughout the world. i-Vu is a registered trademark of Carrier
Corporation. All other trademarks are the property of their respective owners.

Contents
Introduction.................................................................................................................................................................. 1
What is the UC Open controller? ........................................................................................................................1
Specifications ........................................................................................................................................................1
Safety considerations...........................................................................................................................................3
Installing the UC Open................................................................................................................................................. 4
Mounting the UC Open .........................................................................................................................................4
Wiring the UC Open for power ............................................................................................................................5
To wire for power................................................................................................................................... 5
Addressing the UC Open ......................................................................................................................................5
Wiring for communications.................................................................................................................................6
Wiring specifications for BACnet MS/TP and ARC156........................................................................ 6
To wire the controller to the BACnet network ...................................................................................... 7
Wiring inputs and outputs ...................................................................................................................................7
Input wiring specifications .................................................................................................................... 8
Inputs ..................................................................................................................................................... 8
Binary outputs ....................................................................................................................................... 8
To wire inputs and outputs ................................................................................................................... 9
Wiring devices to the UC Open's Rnet port.................................................................................................... 11
Rnet wiring specifications...................................................................................................................11
To wire ZS sensors to the controller...................................................................................................11
To wire the Wireless Adapter for wireless sensors............................................................................12
To wire an Equipment Touch to the UC Open....................................................................................14
To wire the TruVu™ ET Display ...........................................................................................................15
Installing the UC Open into the i-Vu® application ........................................................................................ 16
Local access to the UC Open ....................................................................................................................................18
Troubleshooting .........................................................................................................................................................19
LED's .................................................................................................................................................................... 19
Serial number..................................................................................................................................................... 20
To restore defaults............................................................................................................................................. 20
To replace the UC Open's battery.................................................................................................................... 21
Compliance ................................................................................................................................................................22
FCC Compliance................................................................................................................................................. 22
CE Compliance ................................................................................................................................................... 22
BACnet Compliance........................................................................................................................................... 22
Appendix A: UC Open wire lists.................................................................................................................................23
UC Open wire list................................................................................................................................................ 23
Document revision history ........................................................................................................................................24

UC Open CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
1
What is the UC Open controller?
The UC Open is a general purpose controller that provides the communications circuitry, non-volatile memory, and
removable screw terminals for I/O connections.
Specifications
Driver drv_ucopen_std
Maximum number of control
programs*
10
Maximum number of
BACnet objects*
1050
Introduction

Introduction
UC Open CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
2
Maximum number of third-
party integration points
using Snap*†
10
* Depends on available memory
† BACnet third-party integration points are not counted.
Power 24 Vac ±10%, 50–60 Hz
20 VA power consumption
26 Vdc (25 V min, 30 V max)
Single Class 2 source only, 100 VA or less
BACnet Port For communication with the controller network using BACnet ARC156 (156
kbps) or BACnet MS/TP (9600 bps – 76.8 kbps)
Rnet port •Supports up to 15 wireless and/or ZS sensors, and one Equipment Touch or
TruVu™ ET Display
•Supplies 12 Vdc/210 mA power to the Rnet at an ambient temperature of
77°F (25°C) with a 24 Vac nominal power source.
NOTE Ambient temperature and power source fluctuations may reduce the
power supplied by the Rnet port.
NOTE
If the total power required by the sensors on the Rnet exceeds the power
supplied by the Rnet port, use an external power source. The Wireless Adapter,
Equipment Touch, or TruVu™ ET Display must be powered by an external power
source. See the specifications in each device's Installation and Start-up Guide to
determine the power required.
Local Access port For system start-up and troubleshooting using Field Assistant
Inputs 6 inputs configurable for thermistor or dry contact.
1 and 2 are also configurable for 0–5 Vdc sensors.
NOTE
Input 5 has a maximum temperature of 140°F (60°C).
Input resolution 10 bit A/D
Binary outputs 5 binary outputs, dry relay contacts rated at 1 A max. @ 24 Vac/Vdc, configured
normally open
Output resolution 10 bit D/A
Real time clock Battery-backed real time clock keeps track of time in the event of a power failure
Battery 10-year Lithium CR2032 battery retains the following data for a maximum of
10,000 hours during power outages: control programs, editable properties,
schedules, and trends.
Protection Built-in surge and transient protection for power and communications in
compliance with EN61000-6-1.
Incoming power and network connections are protected by non-replaceable
internal solid-state polyswitches that reset themselves when the condition that
causes a fault returns to normal.
The power, network, input, and output connections are also protected against
transient excess voltage/surge events lasting no more than 10 msec.
CAUTION
To protect against large electrical surges on serial EIA-485
networks, place a PROT485 at each place wire enters or exits the building.
Status indicators LEDs indicate status of communications, running, errors, and power.

Introduction
UC Open CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
3
Environmental operating
range
0 to 130°F (-18 to 54°C), 0 to 90% relative humidity, non-condensing
Storage temperature range -24 to 140°F (-30 to 60°C), 0 to 90% relative humidity, non-condensing
Physical Rugged GE C2950HF Cycoloy plastic
Overall dimensions A:
B:
5-5/8 in. (14.3 cm)
5-1/8 in. (13 cm)
Mounting dimensions C:
D:
E:
5-1/4 in. (13.3 cm)
2-9/16 in. (6.5 cm)
3/16 in. (.5 cm)
Panel depth 2 in. (51 mm)
Weight 0.6 lbs (0.27 kg)
BACnet support Conforms to the BACnet Advanced Application Controller (B-AAC) Standard
Device Profile as defined in ANSI/ASHRAE Standard 135-2012 (BACnet) Annex
L, Protocol Revision 9
Listed by UL-916 (PAZX), cUL-916 (PAZX7), FCC Part 15-Subpart B-Class A, CE
Safety considerations
WARNING
Disconnect electrical power to the UC Open before wiring it. Failure to follow this warning could
cause electrical shock, personal injury, or damage to the controller.

Installing the UC Open
UC Open CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
4
1 Mount the controller. (page 4)
2 Wire the controller for power. (page 5)
3 Set the controller's address. (page 5)
4 Wire the controller to the BACnet MS/TP or BACnet ARC156 network (page 6).
5 Wire inputs and outputs (page 7).
6 Wire devices to the controller's Rnet port. (page 11)
Mounting the UC Open
WARNING
When you handle the UC Open:
•Do not contaminate the printed circuit board with fingerprints, moisture, or any foreign material.
•Do not touch components or leads.
•Handle the board by its edges.
•Isolate from high voltage or electrostatic discharge.
•Ensure that you are properly grounded.
Screw the UC Open into an enclosed panel using the mounting slots on the coverplate. Leave about 2 in. (5 cm)
on each side of the controller for wiring. Mounting hole dimensions 5 1/4" (13.3 cm) between mounting slot
center lines.
Installing the UC Open

Installing the UC Open
UC Open CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
5
Wiring the UC Open for power
WARNING
Do not apply line voltage (mains voltage) to the controller's ports and terminals.
CAUTIONS
•The UC Open 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 controllers.
To wire for power
1 Remove power from the power supply.
2 Pull the screw terminal connector from the controller's power terminals labeled
Gnd
and
Hot
.
3 Connect the transformer wires to the screw terminal connector.
NOTE
If using a grounded transformer, connect the ungrounded lead to the
Hot
terminal to avoid damaging
the transformer.
4 Apply power to the power supply.
5 Measure the voltage at the UC Open’s power input terminals to verify that the voltage is within the operating
range of 21.6–26.4 Vac.
6 Insert the screw terminal connector into the UC Open's power terminals.
7 Verify that the
Power
LED is on and the
Run
LED is blinking.
Addressing the UC Open
You must give the UC Open an address that is unique on the network. You can address the UC Open before or
after you wire it for power.
1 If the UC Open has been wired for power, pull the screw terminal connector from the controller power
terminals labeled
Gnd
and
Hot
. The controller reads the address each time you apply power to it.

Installing the UC Open
UC Open CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
6
2 Using the rotary switches, set the controller 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.
EXAMPLE
If the controller’s address is 25, point the arrow on the
Tens
(
10's
) switch to 2 and the arrow on
the
Ones
(
1's
) switch to 5.
10's
1's
1
3
4
5
2
7
8
9
6
0
1
3
4
5
2
7
8
9
6
0
CAUTION
The factory default setting is
00
and must be changed to successfully install your UC Open.
Wiring for communications
The UC Open communicates using BACnet on the following types of network segments:
•MS/TP communicating at 9600 bps, 19.2 kbps, 38.4 kbps, or 76.8 kbps
•ARC156 communicating at 156 kbps
NOTE
For more networking details, see the Open Controller Network Wiring Installation Guide.
Wiring specifications for BACnet MS/TP and ARC156
Cable: 22 AWG or 24 AWG, low-capacitance, twisted, stranded, shielded copper wire
Maximum length: 2000 feet (610 meters)
WARNING
Do not apply line voltage (mains voltage) to the controller's ports and terminals.