Carrier 48AJ Manuals

Manuals and User Guides for Carrier 48AJ. We have 5 Carrier 48AJ manuals available for free PDF download: Operation And Service Manual, Started Manual, Operating And Service Manual, Installation, Start-Up And Service Instructions Manual, Installation Instructions Manual

Carrier 48AJ Operation And Service Manual

Carrier 48AJ Operation And Service Manual (190 pages)

Single Package Large Rooftop Units with COMFORTLINK Version 5.x Controls

Brand: Carrier | Category: Air Conditioner | Size: 8.6 MB

Table of Contents

Table of Contents
1
Safety Considerations
2
General
3
Conventions Used in this Manual
3
Basic Control Usage
3
Comfortlink Controls
3
Scrolling Marquee
4
Accessory Navigator™ Display
4
Operation
4
System Pilot™ Interface
5
CCN Tables and Display
5
- Generics Status Display Table
  5
Start-Up
7
Unit Preparation
7
Unit Setup
7
Internal Wiring
7
Accessory Installation
7
Crankcase Heaters
7
Evaporator Fan
7
Controls
7
Gas Heat
7
Controls Quick Start
27
Two-Stage Constant Volume Units with
27
- Mechanical Thermostat
  27
- Space Sensor
  28
Variable Air Volume Units Using Return Air Sensor or Space Temperature Sensor
28
Multi-Stage Constant Volume Units with
28
- Mechanical Thermostat
  28
Economizer Options
28
Indoor Air Quality Options
29
Exhaust Options
29
Programming Operating Schedules
29
Service Test
29
General
29
Service Test Mode Logic
29
Independent Outputs
30
Fans in Service Test Mode
30
Cooling in Service Test Mode
30
Heating in Service Test Mode
30
Third Party Control
31
Thermostat
31
Alarm Output
31
Remote Switch
31
VFD Control
31
Supply Air Reset
31
Demand Limit Control
31
Demand Controlled Ventilation Control
31
Controls Operation
32
Modes
32
- System Modes
  33
- Hvac Modes
  33
Unit Configuration Submenu
35
Cooling Control
37
- Setting up the System
  37
- Mechanical Cooling
  37
- Machine Dependent Configurations
  38
- Set Points
  38
- Supply Air Reset Configuration
  38
- Cooling Configuration
  39
- Compressor Safeties
  39
- Compressor Time Guards
  40
- Cool Mode Selection Process
  40
- Cooling Mode Diagnostic Help
  46
- Sumz Cooling Algorithm
  46
- Head Pressure Control
  49
- Economizer Integration with Mechanical Cooling
  50
Heating Control
50
- Setting up the System
  50
- Temperature Driven Heat Mode Evaluation
  52
- Heat Mode Diagnostic Help
  52
- Integrated Gas Control Board Logic
  54
- Morning Warm up
  56
- Tempering Mode
  56
Static Pressure Control
57
- Operation
  57
- Setting up the System
  57
- Static Pressure Reset Operation
  59
- Related Points
  59
Fan Status Monitoring
59
- Setting up the System
  59
- Supply Fan Status Monitoring Logic
  60
Dirty Filter Switch
60
Economizer
60
- Setting up the System
  60
- Economizer Operation
  61
- Economizer Operation Configuration
  63
- Economizer Diagnostic Help
  63
Building Pressure Control
63
Smoke Control Modes
66
- Fire-Smoke Inputs
  66
- Airflow Control During the Fire-Smoke Modes
  66
- Relevant Items
  67
- Setting up the System
  67
- Operation
  67
Indoor Air Quality Control
67
Operation
69
Dehumidification and Reheat
69
Temperature Compensated Start
71
- Temperature Compensated Start Logic
  71
Carrier Comfort Network
71
- (CCN) System
  71
Alert Limit Configuration
72
Sensor Trim Configuration
73
Discrete Switch Logic Configuration
74
Display Configuration
74
Remote Control Switch Input
74
Hot Gas Bypass
75
Space Temperature Offset
75
Time Clock Configuration
75
Troubleshooting
77
Complete Unit Stoppage
77
Single Circuit Stoppage
77
Service Analysis
77
Restart Procedure
77
Thermistor Troubleshooting
77
Transducer Troubleshooting
78
Forcing Inputs and Outputs
90
Run Status Menu
90
- Auto View of Run Status
  91
- Economizer Run Status
  91
- Cooling Information
  92
- Mode Trip Helper
  92
- Ccn/Linkage Display Table
  92
- Compressor Run Hours Display Table
  92
- Compressor Starts Display Table
  92
- Time Guard Display Table
  93
- Software Version Numbers Display Table
  93
Alarms and Alerts
93
Major System Components
101
General
101
Factory-Installed Components
101
Accessory Control Components
124
Service
128
Service Access
128
Cleaning
128
Lubrication
130
Evaporator Fan Performance Adjustment
130
Evaporator Fan Coupling Assembly
130
Evaporator Fan Service and Replacement
131
Belt Tension Adjustment
131
Evaporator-Fan Motor Replacement
131
Condenser-Fan Adjustment
132
Four-Inch Filter Replacement
132
Power Failure
132
Refrigerant Charge
132
Thermostatic Expansion Valve (TXV)
132
Gas Valve Adjustment
132
Main Burners
139
Filter Drier
139
Replacement Parts
139
Appendix A - Local Display Tables
140
Appendix A — Local Display Tables
147
Appendix B - Ccn Tables
148
Appendix B — Ccn Tables
160
Appendix C - Vfd Information
161
- Appendix C — Vfd Information
  169
- Appendix D - Mode Selection
  170
- Process
  170
Appendix E - Upc Open Controller
171
- Appendix E — Upc Open Controller
  182
- Unit Start-Up Checklist
  183
Index
183
Controls Set Point and Configuration Log
185

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Carrier 48AJ Operating And Service Manual

Carrier 48AJ Operating And Service Manual (160 pages)

Single Package Large Rooftop Units with Scroll Compressors and COMFORT LINK Version 4.X Controls

Brand: Carrier | Category: Air Conditioner | Size: 7.75 MB

Table of Contents

Table of Contents
1
Service and Troubleshooting
1
Safety Considerations
2
General
2
Basic Control Usage
3
Comfortlink Control
3
Scrolling Marquee
3
Accessory Navigator™ Display
4
Operation
4
System Pilot™ Interface
4
CCN Tables and Display
5
- Generics Status Display Table
  5
Conventions Used in this Manual
5
Start-Up
7
Unit Preparation
7
Unit Setup
7
Internal Wiring
7
Accessory Installation
7
Crankcase Heaters
7
Evaporator Fan
7
Controls
7
Gas Heat
7
Controls Quick Start
27
Two-Stage Constant Volume Units with
27
- Mechanical Thermostat
  27
- Space Sensor
  27
Variable Air Volume Units Using Return Air Sensor or Space Temperature Sensor
27
Multi-Stage Constant Volume Units with
28
- Mechanical Thermostat
  28
- Space Sensor
  28
Economizer Options
28
Indoor Air Quality Options
28
Exhaust Options
28
Set Clock on VFD (if Installed)
28
Programming Operating Schedules
29
Service Test
29
General
29
Service Test Mode Logic
29
Independent Outputs
30
Fans
30
Cooling
30
Heating
30
Third Party Control
30
Thermostat
30
Alarm Output
30
Remote Switch
30
VFD Control
31
Supply Air Reset
31
Demand Limit Control
31
Demand Controlled Ventilation Control
31
Controls Operation
32
Modes
32
- System Modes
  32
- Hvac Modes
  33
Unit Configuration Submenu
35
Cooling Control
36
- Setting up the System
  37
- Machine Dependent Configurations
  37
- Set Points
  37
- Supply Air Reset Configuration
  38
- Cooling Configuration
  38
- Demand Limit Control
  45
- Economizer Integration with Mechanical Cooling
  47
Heating Control
47
- Setting up the System
  47
- Heat Mode Selection Process
  48
- Temperature Driven Heat Mode Evaluation
  48
- Heat Mode Diagnostic Help
  49
- Integrated Gas Control Board Logic
  51
- Morning Warm up
  53
- Tempering Mode
  53
Static Pressure Control
54
- Setting up the System
  54
- Static Pressure Reset
  56
- Related Points
  56
Fan Status Monitoring
57
- Setting up the System
  57
- Supply Fan Status Monitoring Logic
  57
Dirty Filter Switch
57
Economizer
57
Building Pressure Control
61
Indoor Air Quality Control
63
- Setting up the System
  64
- Pre-Occupancy Purge
  66
Smoke Control Modes
63
- Fire-Smoke Inputs
  63
Dehumidification and Reheat
66
- Setting up the System
  66
Temperature Compensated Start
67
- Setting up the System
  67
- Temperature Compensated Start Logic
  68
Carrier Comfort Network (CCN)
68
Alert Limit Configuration
69
Sensor Trim Configuration
69
Discrete Switch Logic Configuration
70
Display Configuration
71
Remote Control Switch Input
71
Hot Gas Bypass
72
Space Temperature Offset
72
Time Clock Configuration
72
Troubleshooting
74
Complete Unit Stoppage
74
Single Circuit Stoppage
74
Service Analysis
74
Restart Procedure
74
Thermistor Troubleshooting
74
Transducer Troubleshooting
74
Forcing Inputs and Outputs
83
Run Status Menu
83
- Auto View of Run Status
  84
- Economizer Run Status
  84
- Cooling Information
  85
- Mode Trip Helper
  85
- Ccn/Linkage Display Table
  85
- Compressor Run Hours Display Table
  85
- Compressor Starts Display Table
  85
- Time Guard Display Table
  85
- Software Version Numbers Display Table
  85
Alarms and Alerts
86
Major System Components
94
General
94
Factory-Installed Components
94
Accessory Control Components
114
Service
118
Service Access
118
Cleaning
118
Lubrication
120
Evaporator Fan Performance Adjustment
120
Evaporator Fan Coupling Assembly
120
Evaporator Fan Service and Replacement
121
Belt Tension Adjustment
121
Evaporator-Fan Motor Replacement
121
Condenser-Fan Adjustment
121
Four-Inch Filter Replacement
121
Power Failure
121
Refrigerant Charge
121
Thermostatic Expansion Valve (TXV)
122
Gas Valve Adjustment
122
Main Burners
122
Filter Drier
122
Replacement Parts
122
Appendix A - Local Display Tables
123
Appendix B - Ccn Tables
131
Appendix C - Vfd Information
144
- Appendix D - Mode Selection
  152
- Process
  152
- Airflow Control During Fire-Smoke Modes
  154
Index
154
Unit Start-Up Checklist
159

Carrier 48AJ Installation, Start-Up And Service Instructions Manual

Carrier 48AJ Installation, Start-Up And Service Instructions Manual (119 pages)

Single Package Rooftop Units Electric Cooling/Gas Heating, with Reciprocating Compressor

Brand: Carrier | Category: Air Conditioner | Size: 6.67 MB

Table of Contents

Table of Contents
1
Safety Considerations
1
Step 1 - Provide Unit Support
1
- Roof Curb
  2
- Alternate Unit Support
  2
Installation
1
Roof Mount
2
Step 2 - Rig and Place Unit
2
Step 3 - Field Fabricate Ductwork
2
Step 4 - Make Unit Duct Connections
2
- Base Unit Dimensions
  7
- Rigging Information
  19
- Rigging Weights
  20
- Physical Data
  21
- Operating Weights
  26
- CV Motor Weights
  26
- Vav Motor Weights
  26
- Air Distribution — Thru-The-Side
  27
- Air Distribution — Thru-The-Bottom
  27
- Evaporator Fan Motor Data
  27
- Combustion Fan Housing Location
  28
Step 5 - Install Flue Hood
28
Step 6 - Trap Condensate Drain
28
Step 7 - Install Gas Piping
28
- Field Gas Piping
  29
- 48A,E Series Staged Gas Implementation
  29
Step 8 - Controls Options
29
Step 9 - Make Electrical Connections
33
- Power Wiring
  33
  - Control Board Diagram
    34
  - Electrical Data
    35
  - Routing through Bottom of Unit
    43
  - Routing through Side of Unit
    43
- Field Control Wiring
  43
- Economizer
  48
Step 10 - Make Outdoor-Air Inlet
48
Step 12 - Install All Accessories
54
- Motormaster III Control Baffle Details
  55
- Motormaster III Sensor Location
  55
- Install Motormaster III Controls
  55
- Electrical Connections
  55
- Ductwork
  57
- Side Supply and Return Units
  57
- Side Return Air Conversion
  57
Step 13 - Field Modifications
57
Start-Up
58
- Crankcase Heaters
  59
- Variable Frequency Drive (VFD)
  59
- Carrier Default Program Parameter Values
  60
- Carrier VFD (Toshiba TOSVERT VF-S9) Program Parameter Values
  62
- Direct Digital Controls DIP Switch Configuration
  63
- Power Exhaust
  63
- DIP Switch Configuration
  64
- Condenser Fans and Motors
  64
- DIP Switch Factory Settings
  65
- Fan Performance
  65
- High Efficiency Motors
  79
- Air Quality Limits
  79
- Standard Efficiency Motors
  79
- Motor Limitations
  79
- Sequence of Operation
  80
- Return-Air Filters
  80
- Filter Replacement
  80
- Economizer Adjustment
  80
- User Defined Set Points
  81
- Software Control Link Points
  81
- Cooling, Variable Air Volume (Vav) Units
  82
- Gas Heating, Constant Volume (CV) Units
  82
- Heat Interlock Relay Wiring
  83
- Staged Gas Unit Heating
  83
- Gas Heating, Variable Air Volume (Vav) Units
  83
- Staged Gas System Components
  84
- Stage Gas System Inputs/Outputs
  84
- Operating Modes
  84
- Tempering (Cool) Mode
  84
- Navigator Display
  85
- Navigator Display Menu Structure
  85
- Morning Warm-Up
  85
- Space Temperature Reset Example
  86
- Occupied Heat and Morning Warm-Up Operation and Controlling Factors
  86
- Space Temperature Reset Sensor
  86
- Space Temperature Sensor Control
  86
- Field-Supplied Smoke Detector Wiring
  87
- Supply Air Temperature Reset
  87
- Power Exhaust Operation
  87
- Smoke Control Modes
  87
- Capacity Control, Cooling
  88
- Motormaster III Control
  88
- Head Pressure Control
  88
- Service Access
  89
- Cleaning
  89
- Main Burners
  89
Service
89
- Typical Gas Heating Section
  90
- Gas Heat Section Details
  90
- Evaporator Coil
  90
- Condensate Drain
  90
- Reassembling the Coupling into the Unit
  91
- Lubrication
  91
- Evaporator Fan Coupling Assembly
  91
- Evaporator Fan Performance Adjustment
  91
- Evaporator Fan Service and Replacement
  92
- Belt Tension Adjustment
  92
- Evaporator-Fan Motor Replacement
  92
- Condenser-Fan Adjustment
  92
- Thermostatic Expansion Valve (TXV)
  93
- Power Failure
  93
- Refrigerant Charge
  93
- Gas Valve Adjustment
  93
- Cooling Charging Chart
  94
- Gas Valve
  94
- Main Burner Removal
  94
- Replacement Parts
  95
- Relief Devices
  95
- Typical Wiring Schematics
  95
- Compressor Protection
  95
- Protective Devices
  95
- Filter Drier
  95
- Typical Power Schematic
  96
- Typical 48EK VAV 24-V Control Circuit
  97
- Typical CV 24-V Control Circuit
  98
- Typical 48EK VAV 115-V Control Circuit
  99
- Typical 48EJ CV 115-V Control Circuit
  100
- Label Diagram - Staged Gas Heat
  101
- Typical Refrigerant Circuiting
  103
Troubleshooting
103
Start-Up Checklist
117

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Carrier 48AJ Started Manual

Carrier 48AJ Started Manual (178 pages)

Single Package Large Rooftop Units with COMFORTLINK Ti Version 5.x Controls Sizes (020-060)

Brand: Carrier | Category: Air Conditioner | Size: 20.39 MB

Table of Contents

Table of Contents
2
Indoor Air Quality Control
67
- Operation
  67
- Pre-Occupancy Purge
  69
Dehumidification and Reheat
69
- Settingup the System
  71
Temperature Compensated Start
71
- TEMPERATURE COMPENSATED START LOGIC Carrier Comfort Network ® (CCN) System
  71
Alert Limit Configuration
72
Sensor Trim Configuration
73
Discrete Switch Logic Configuration
74
Display Configuration
74
Remote Control Switch Input
74
Hot Gas Bypass
75
Space Temperature Offset
75
Time Clock Configuration
75
Troubleshooting
77
Complete Unit Stoppage
77
Single Circuit Stoppage
77
Service Analysis
77
Restart Procedure
77
Thermistor Troubleshooting
77
Transducer Troubleshooting
78
Forcing Inputs and Outputs
90
Run Status Menu
90
Alarms and Alerts
93
Major System Components
101
General
101
Factory-Installed Components
101
Accessory Control Components
124
Service
128
Service Access
128
Cleaning
128
Lubrication
130
Evaporator Fan Performance Adjustment
130
Evaporator Fan Coupling Assembly
130
Evaporator Fan Service and Replacement
131
Belt Tension Adjustment
131
Evaporator-Fan Motor Replacement
131
Condenser-Fan Adjustment
132
Four-Inch Filter Replacement
132
Power Failure
132
Refrigerant Charge
132
Thermostatic Expansion Valve (TXV)
132
Gas Valve Adjustment
132
Main Burners
139
Filter Drier
139
Replacement Parts
139
Appendix A -- Local Display Tables
140
Appendix B -- Ccn Tables
148
Appendix C -- Vfd Information
161
Appendix D -- Mode Selection
170
- Process
  170
Index
171
Unit Start-Up Checklist
178

Carrier 48AJ Installation Instructions Manual

Carrier 48AJ Installation Instructions Manual (36 pages)

Single Package Rooftop Units Electric Cooling/Gas Heating with Scroll Compressor and COMFORTLINK Controls

Brand: Carrier | Category: Air Conditioner | Size: 4.63 MB

Table of Contents

Table of Contents
1
Safety Considerations
1
Installation
1
Step 1 - Provide Unit Support
1
- Roof Curb
  2
Step 4 - Make Unit Duct Connections
2
Step 2 - Rig and Place Unit
2
- Roof Mount
  2
- Installation
  2
Step 3 - Field Fabricate Ductwork
2
Step 6 - Trap Condensate Drain
19
Step 5 - Install Flue Hood
19
Step 7 - Install Gas Piping
19
Step 8 - Make Electrical Connections
20
- Power Wiring
  20
- Field Power Supply
  20
- Adjustments
  32
- Economizer and Fixed Outdoor Air Damper
  32
Step 10 - Position Power Exhaust/Barometric
33
- Relief Damper Hood
  33
Step 11 - Route VAV Static Pressure Sensor
34
Step 12 - Install All Accessories
35
Step 13 - Field Modifications
35

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