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RTU Open v3
Carrier RTU Open v3 User Manual
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Installing
the RTU Open
RT
U O
pe
n v3
CARRIER CORPORATION ©
2019
Installat
ion and St
art
-
up
Gui
de
All rights reserved
40
To wire an occupa
ncy switch or door contact
NOTES
•
Binary Inp
uts 3, 5
, 8, and
9 are c
onfigurab
le and may
be used
for
Fan Status
,
Filter Status
,
Remote
Occupancy
, o
r
Door Cont
acts
-
provid
ed they
have not b
een use
d for t
heir def
ault functi
ons.
•
Foll
ow device
manufacture
r's in
stallat
ion and ope
rating i
nstruct
ions.
43
45
Table of Contents
Table of Contents
3
Introduction
5
What Is the RTU Open Controller
5
Specifications
7
Safety Considerations
8
Installing the RTU Open
9
Field-Supplied Hardware
9
To Mount the RTU Open
10
To Wire the Controller for Power
11
To Use the Rooftop Equipment Control Power Transformer
12
To Use an Auxiliary Control Power Transformer
13
To Set the Controller's Address
15
To Set the Controller's Communications Protocol and Baud Rate
15
Wiring for Communications
16
Wiring Specifications for Bacnet MS/TP and ARC156
16
To Wire the Controller to the Bacnet Network
16
Wiring Inputs and Outputs
17
Input Wiring Specifications
18
Inputs
19
Binary Outputs
19
Analog Outputs
19
To Wire Inputs and Outputs
20
Wiring Sensors and Switches to the Controller
24
Field-Supplied Sensor Hardware
25
Wiring Devices to the RTU Open's Rnet Port
26
Wiring a Supply Air Temperature Sensor
31
Wiring a Duct Air Temperature Sensor
32
Wiring an Outdoor Air Temperature Sensor
33
Wiring a CO2 Sensor
34
Wiring an Outdoor Air Quality Sensor
36
Wiring a Relative Humidity Sensor
37
Wiring a Humidistat
38
Wiring an Enthalpy Switch
39
Wiring a Status Switch
41
Wiring a Compressor Safety
42
Wiring an Occupancy Switch or Door Contact
43
Start-Up
45
Service Test
45
Configuring the RTU Open's Properties
47
Sequence of Operation
48
Occupancy
48
Supply Fan
49
Cooling
49
Economizer
50
Power Exhaust
51
Pre-Occupancy Purge
52
Unoccupied Free Cooling
52
Optimal Start
52
Enthalpy Control
54
Indoor Air CO2
54
Heating
55
Heat Pump Operation
55
Dehumidification
56
Demand Limiting
56
Door Switch
56
Remote Occupancy
57
Fire Shutdown
57
Compressor Safety
57
Fan Status
57
Filter Status
58
Alarms
58
Linkage
60
Linkage Air Source Mode Determination
62
Troubleshooting
63
Communication Led's
63
To Get the Serial Number
64
To Replace the RTU Open's Battery
64
Compliance
65
FCC Compliance
65
CE Compliance
65
Bacnet Compliance
65
Appendix A: RTU Open Points/Properties in I-Vu®/Field Assistant
66
Status
66
Unit Configuration
67
Setpoints
74
Alarm Configuration
80
Service Configuration
82
Maintenance
86
Performance
89
Alarms
90
Linkage
92
I/O Points
93
Appendix B: Single Point Linkage and Device Address Binding
95
Single Point Linkage
95
Device Address Binding
96
Appendix C: RTU Open Points/Properties on the Equipment Touch
97
Navigation Screens
97
Startup Wizard
99
Status - Equipment Touch
101
Unit Configuration - Equipment Touch
102
Setpoints - Equipment Touch
104
Alarm Configuration - Equipment Touch
105
Maintenance - Equipment Touch
106
Performance - Equipment Touch
108
Alarms - Equipment Touch
108
Document Revision History
111
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Carrier RTU Open v3 Specifications
General
Brand
Carrier
Model
RTU Open v3
Category
Controller
Language
English
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