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Carrier RTU Open User Manual
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3
Fig. 1 — RTU Open Control Module
J4
J2
J1
J5
J5
J22
J17
J19
J14
J1
1
J22
J3
J13
J12
J15
J20
Network Comm
Configurable - Input_8
24 V
AC
Configurable - Input_5
24 V
AC
Configurable - Input_3
24 V
AC
Input_9 (Humidistat)
24 V
AC
24 V
AC
Input _8 (Enthalpy)
AO-1 (ECON)
Gnd
(OA
T)
Gnd
(SA
T)
Input_5 (SMK)
Input_4
(R)
BO-5
(Y1)
BO-4
(Y2)
BO-3
(W1)
BO-2
(W2)
BO-1
(G)
Gnd
Input_3
(X)
24 V
AC IN
+24 VDC
Input_2 (CO2/RH)
Gnd
+24 VDC
Input_1 (CO2/RH)
Gnd
Board Power
(AO-1)
0-10VDC
4-20mA
BO-6
(H) Humidimizer
BO-8
(Power Exhaust)
LonWorks
Option Card
Port
Example set for
BACnet MS/TP
and 76.8K baud
(1, 2, and 4 ON)
Recommended for all
i-Vu Open installations
Protocol Selector
SPT (temp input)
BACnet, Modbus, or N2
(LON connection J15)
SPT (common)
SPT (offset input)
*Remove
both for 0-5V
AO-2
GND
(0-10V or 2-10V)
BO-7
(Reversing V
alve/High Speed Fan/Y3)
3-V
olt
Lithium
Battery
BO-1
BO-2
BO-3
BO-4
BO-5
BO-6
BO-7
BO-8
VFD Output/IDF Output
2
4
Table of Contents
Default Chapter
1
Table of Contents
1
Safety Considerations
2
General
2
Sensor/Accessory Installation
2
Sensors and Accessories
4
User Interfaces
4
Install Analog Sensors
11
Supply Air Sensor (Sat)
11
Outdoor Air Sensor (Oat)
11
Space Temperature Sensor (Spt)
11
Sensor Averaging
11
Co2 Sensor(S) (Iaq and Oaq)
12
Relative Humidity Sensors
13
Mounted)
13
Installing Discrete Inputs
13
Compressor Safety
13
Humidistat
14
Single Enthalpy (Outdoor Enthalpy)
14
Differential Enthalpy
14
Fire Shutdown
14
Filter Status
15
Fan Status
15
Remote Occupancy
15
Igc Override
15
Communication Wiring-Protocols
15
General
15
I-Vu Building Automation System
15
Bacnet Ms/Tp
15
Modbus
16
Johnson N2
16
Lonworks
16
Local Access
16
Start-Up
17
Ecoblue™ Fan Set up
17
Additional Installation/Inspection
17
Power Exhaust Relay Power
17
Service Test
17
Fan Test
17
High Speed Fan Test
17
Compressor 1 and Compressor 2 Test
18
Heat 1 and Heat 2 Test
18
Dehumidification Test
18
Power Exhaust Test
18
Economizer Test
18
Vfd Speed Test
18
Configuration
18
Unit
18
Inputs
20
Service Configuration
20
Operation
22
Occupancy
22
Always Occupied (Default)
22
Bacnet Schedule
22
Remote Occ Input
22
Indoor (Supply) Fan
22
Auto
22
Continuous
22
Always on
22
Fan off Delay
22
Supply Fan
23
Economizer
23
Enthalpy Control
24
Space Air Quality
24
Power Exhaust
24
Pre-Occupancy Purge
24
Heating
24
Indoor Air Quality
24
Dehumidification
25
Demand Limit
25
Unoccupied Free Cooling
25
Optimal Start
25
Fire Shutdown
25
Compressor Safety
25
Fan Status
25
Filter Status
26
Door Switch
26
Remote Occupancy
26
Linkage
26
Linkage Air Source Modes
26
Troubleshooting
26
General
26
Replacing the Rtu Open Controller
26
Thermistor Troubleshooting
26
Software Version
27
Communication Led's
27
Alarms
29
Safety Chain Alarm
29
Fire/Smoke Shutdown Alarm
29
Gas Valve Alarm
29
Supply Fan Failure
29
Supply Fan in Hand
29
Compressor Status
29
Space Temp Sensor
29
Zs Sensor
29
Supply Air Temp Sensor
29
Space Relative Humidity Sensor
30
4
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Carrier RTU Open Specifications
General
Brand
Carrier
Model
RTU Open
Category
Controller
Language
English
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