Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480037-01
Printed in U.S.A.
Form 48/50A-4T
Pg 154
8-06
Replaces: 48/50A-3T
Book 1
1
Tab
1a 1b
Copyright 2006 Carrier Corporation
INDEX
Accessory control components
114
Accessory installation
7
Accessory Navigator™ display
4, 116
Airflow control during
fire-smoke modes
63
Alarm output
30
Alarms and alerts
86
Alert limit configuration
69
Auto view of run status
83
Basic control usage
3-6
Building pressure configuration
61
Building pressure control
61
Carrier Comfort Network (CCN)
68
CCN tables and display
5
CCN tables
131-143
Cleaning
118
Comfort
Link™ control
3
Complete unit stoppage
74
Compressor run hours display table
84
Compressor starts display table
84
Condenser-fan adjustment
121
Controls
7
Controls operation
4, 32-72
Controls quick start
27-29
Controls set point and configuration
log
CL-1 to CL-4
Conventions used in this manual
5
Cool mode selection process
39
Cooling
30
Cooling control
36
Cooling mode diagnostic help
43
Crankcase heaters
7
Dehumidification and reheat
66
Demand controlled ventilation control
31
Demand limit control
31, 45
Dirty filter switch
57
Discrete switch logic configuration
70
Display configuration
71
Economizer
57
Economizer diagnostic help
60
Economizer integration with
mechanical cooling
47
Economizer operation
58
Economizer options
28
Economizer run status
83
Evacuation mode
63
Evaporator fan
7, 120, 121
Exhaust options
28
Factory-installed components
94
Fan status monitoring
57
Fans
30
Filter drier
122
Fire shutdown mode
63
Fire-smoke inputs
63
Four-inch filter replacement
121
Forcing inputs and outputs
83
Gas heat (48A only)
7
Gas valve adjustment (48A only)
122
Generics table
5
Head pressure control
46
Heat mode diagnostic help
49
Heat mode selection process
48
Heating
30
Heating control
47
Hot gas bypass
72
HVAC modes
33
Independent outputs
30
Indoor air quality control
63
Indoor air quality options
28
Internal wiring
7
Local display tables
123-130
Lubrication
120
Main burners
122
Major system components
94-117
Mode trip helper
84
Modes
32
Multi-stage constant volume units with
mechanical thermostat
28
Multi-stage constant volume units
with space sensor
28
Power failure
121
Pressurization mode
63
Programming operating schedules
29
Refrigerant charge
121
Remote control switch input
71
Remote switch
30
Replacement parts
122
Restart procedure
74
Run status menu
83
Safety considerations
2
Scrolling Marquee
3, 112
Sensor trim configuration
69
Service
118-122
Service access
118
Service analysis
74
Service test
29, 30
Service test mode logic
29
Set clock on VFD (if installed)
28
Single circuit stoppage
74
Smoke control modes
63
Smoke purge mode
63
Software version numbers
display table
85
Space temperature offset
72
Staged gas heating control
51
Start up
7-26
Static pressure control
54
Static pressure reset
55
SumZ cooling algorithm
43
Supply air reset
31
Supply fan status monitoring logic
57
System modes
32
System Pilot™ interface
4
Temperature compensated start
67
Temperature compensated start logic
68
Thermistor troubleshooting
74
Thermostat
30
Thermostatic expansion valve (TXV)
122
Third party control
30-32
Time clock configuration
72-74
Transducer troubleshooting
74
Troubleshooting
74-94
Two-stage constant volume units
with mechanical thermostat
27
Two-stage constant volume units
with space sensor
27
Unit Configuration submenu
35
Unit preparation
7
Unit setup
7
Unit staging tables
42, 43
Unit start-up checklist
CL-5
Unoccupied economizer free cooling
59
Variable air volume units using return
air sensor or space temperature sensor
27
VFD control
31
VFD information
152, 153
Summary of Contents for WEATHERMAKER 48AJ020
Page 95: ...95 Fig 13 Typical Main Control Box Wiring Schematic A48 7787 ...
Page 96: ...96 TO NEXT PAGE Fig 14 Auxiliary Control Box Wiring Schematic A48 7294 ...
Page 98: ...98 Fig 15 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 6866 ...
Page 102: ...102 TO NEXT PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown A48 7298 ...
Page 104: ...104 Fig 19 Controls Option Wiring Schematic A48 7810 ...
Page 105: ...105 Fig 20 Small Chassis Component Location Size 020 035 Units A48 7301 ...
Page 106: ...106 Fig 21 Large Chassis Component Locations Size 036 060 Units A48 7302 ...