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48LC 09
Carrier 48LC 09 User Manual
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55
Main
Base
Board
(MBB)
See
Fig.
32
a
nd
T
able
24.
The
ma
jor
ity
of
the
I/
O
is
conne
cte
d
to
the
MBB
whic
h
exe
c
ute
s
the
contr
o
ls
opera
tion
o
f
the
unit
from
the
sof
twar
e
tha
t
is
loa
de
d
onto
i
t.
J1
J2
J3A
J3B
J3C
J3D
J3E
J4
J5
J6
J7
J8
J9
J10
TB5
J1
1
J12
J13
J14
TB4
J15
J16
J17
J20
J18
TB3
TB2
TB1
C150161
Fig.
32
-
-
Main
Base
Board
(
MBB)
54
56
Table of Contents
Table of Contents
1
Safety Considerations
2
General
3
Conventions Used in this Manual
3
Basic Control Usage
3
Systemvu Control
3
Systemvu Interface
3
Accessory Navigatort Display
4
System Pilott and Touch Pilott Devices
5
CCN Tables and Display
5
Start-Up
6
Unit Preparation
6
Refrigerant Service Ports
6
Crankcase Heater
6
Compressor Rotation
6
Power Supply
6
Internal Wiring
6
Evaporator Fan
6
Condenser Fans and Motors
7
Return- -Air Filters
7
Outdoor- -Air Inlet Screens
7
Accessory Installation
7
Gas Heat (48LC)
8
Controls Quick Set- -Up
9
Control Set Point and Confirmation Log
9
Initial Startup
9
Thermostat Control
9
Space Temperature Sensor Control - - Direct Wired (T- -55 or T- -56 or T- -59)
9
Space Humidistat Control
9
Relative Humidity Sensor Control
9
CCN Communication
10
CCN Linkage Control
10
System Pilott - - Communication Space Sensor
10
Accessories
10
Programming Operating Schedules
10
Service Test
11
Independent Outputs
11
Fan Test
11
Cooling Test
11
Heating Test
11
Automatic Test
12
Third Party Control
12
Cooling/Heating Control
12
Dehumidification Control
12
Remote Occupancy
12
Remote Shutdown
12
Alarm Output
12
Economizer Damper Control
12
Controls Operation
12
Display Configuration
12
Unit Configuration
13
General Operation
13
Demand Determination
14
Occupancy Determination
15
Indoor Fan Operation
16
Cooling Operation
17
Optional Humidi- -Mizer
19
Dehumidification System
19
Indoor Fan Based Dehumidification
22
Heating Operation
22
Supply Air Tempering
24
Economizer Operation
24
Power Exhaust
26
Indoor Air Quality (IAQ)
26
Pre- -Occupancy Purge
27
Temperature Compensated Start
27
Linkage
28
Carrier Comfort Network R (CCN) Operation
28
Bacnet Network Operation
28
Alarm Handling
28
Troubleshooting
28
Complete Unit Stoppage
29
Restart Procedure
29
Faults and Alerts
29
Control Module Communication
36
Communication Failures
36
Cooling Troubleshooting
37
Humidi- -Mizer System Troubleshooting
38
Economizer Troubleshooting
40
Heating Troubleshooting
41
Phase Protection
44
Thermistor Troubleshooting
44
Sensor Trim
44
Transducer Troubleshooting
44
Major System Components
49
General
49
Main Base Board (MBB)
55
Input- -Output Board (IOB)
57
Integrated Gas Control (IGC) Board
58
Protective Devices
59
Space Mounted Sensors
59
Variable Frequency Drive (VFD)
61
LC 04- -06 Variable Frequency Drive (ABB VFD)
61
LC 07- -26 Variable Frequency Drive (Danfoss VFD)
65
Carrier Comfort Network R (CCN) Interface
74
APPENDIX A: Systemvut Controller Display
76
APPENDIX B: Systemvu Controller Text Point Reference
97
APPENDIX C: Navigatort Display
98
APPENDIX D: Systemvu Controller CCN Tables
117
APPENDIX E: Bacnet Points List
142
Control Set Point and Configuration Log
153
Unit Start-Up Checklist
163
4
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Carrier 48LC 09 Specifications
General
Brand
Carrier
Model
48LC 09
Category
Air Conditioner
Language
English
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