Carrier NB Manuals

Manuals and User Guides for Carrier NB. We have 1 Carrier NB manual available for free PDF download: Controls Operation And Troubleshooting

Carrier NB Controls Operation And Troubleshooting

Carrier NB Controls Operation And Troubleshooting (116 pages)

Single-Package Heating/Cooling Units With Product Integrated Controls 50/60 Hz

Brand: Carrier | Category: Air Conditioner Accessories | Size: 1.83 MB

Table of Contents

Table of Contents
1
Safety Considerations
2
General
2
- Architecture
  2
PIC Rooftop Information
4
Digital Air Volume (DAV) Linkage
4
Major Control Components
4
General
4
Controls and Functions
8
Definitions
8
Accessing the Control System
9
Basic System Functions
12
Service Group
16
Schedules Group
18
Economizer and Power Exhaust Group
20
- Nighttime/Unoccupied Free Cooling
  21
Smoke Control Group
24
Special Ventilation Group
25
- Indoor Air Quality (Iaq)
  25
Dehumidification and Humidifier Group
28
- Dehumidification and Reheat
  28
Supply Fan Duct Pressure and VAV Control Group
29
- SUPPLY FAN DUCT PRESSURE CONTROL (VAV Only)
  29
- SUPPLY-AIR SET POINT RESET (External Signal)
  30
Remote Controls Group
31
- SPACE TEMPERATURE OFFSET (CV Only)
  31
Special Systems Group
31
- HEAD PRESSURE/FAN CYCLING CONTROL (Motormaster® Head Pressure Control)
  32
- Transducers and Suction Thermistors
  33
Carrier Comfort Network
33
Carrier Comfort Network (CCN) Group
33
Installation Information
34
Control Wiring
34
Smoke Control
34
- Function Wiring
  35
Remote SASP Reset
35
Remote START/OCCUPIED Control
35
Timed Discrete Output
41
Air Pressure Tubing
41
Space Temperature Sensors
41
Humidity Sensors
41
Interface
43
- RJ-11 Plug Wiring
  44
Monitor And/Or Control from Non-CCN Building Management System
44
Start-Up
46
Initial Check
46
Set Fan Status and Check Filter Switches
46
- Supply Fan Status Switch (Fs)
  46
- Check Filter Switch (Cfs)
  46
Auxiliary Switch, Power Exhaust
46
Adjusting Set Points
47
- Set Point Function
  49
Program Time Sequences
52
- Schedule Function
  52
Start Unit
53
Operating Sequences
53
Head Pressure Control
56
Control Loop Checkout
60
Unit Operation
61
Status Function
61
Troubleshooting
71
Checking Display Codes
71
Unit Standby
71
Complete Unit Stoppage
71
Single Circuit Stoppage
72
Restart Procedure
72
Alarm and Alerts
72
- Diagnostic Alarm Codes and Possible Causes
  72
Thermistor Troubleshooting
76
Transducer Troubleshooting
80
Refrigerant Pressure Transducer Replacement and Calibration
80
Red Led
81
Control Modules
81
Economizer Actuator
84
Variable Frequency Drive
84
Quick Test
86
Forcing Values
87
Service
87
History Function
87
Service Function
87
Test Function
96
Unit Control Wiring
96
- Appendix A - Input/Output
  103
- Tables 034-078
  103
- Appendix B - Input/Output
  105
- Tables 088,104
  105
Appendix C - CCN Points List
107
Appendix D - Bacnet Points List
109
- Appendix E - Carrier Default Program
  111
- Parameter Values
  111
Start-Up Checklist
113

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