Main
Controls, Start-Up, Operation, Service and Troubleshooting
CONTENTS
CONTENTS (cont)
SAFETY CONSIDERATIONS
WARNING
CAUTION
WARNING
GENERAL
Con ventions Used in This Man ual
BASIC CONTROL USAGE ComfortLink Controls The ComfortLink con-
Scr olling Marquee
Accessory Navigator Displa y
Operation
System Pilot Interface
CCN T ab les and Display
Table 2 Scrolling Marquee Menu Display Structure
START-UP Unit Preparation
Unit Setup
Internal Wiring
Accessory Installation
Crankcase Heaters
Table 3 Fan Performance 48ZG,ZN030 and 50ZG,ZN030 Units Without Discharge Plenum*
Table 4 Fan Performance 48ZG,ZN035 and 50ZG,ZN035 Units Without Discharge Plenum*
Table 5 Fan Performance 48ZG,ZN040 and 50ZG,ZN040 Units Without Discharge Plenum*
Table 6 Fan Performance 48ZG,ZN050 and 50ZG,ZN050 Units Without Discharge Plenum*
Table 7 Fan Performance 48ZG,ZN055 and 50ZG,ZN055 Units Without Discharge Plenum*
Table 8 Fan Performance 48ZG,ZN060 and 50ZG,ZN060 Units Without Discharge Plenum*
Table 9 Fan Performance 48ZG,ZN070 and 50ZG,ZN070 Units Without Discharge Plenum*
Table 10 Fan Performance 50ZG,ZN030 Units With Discharge Plenum and 50Z2,Z3030 Units
Table 11 Fan Performance 50ZG,ZN035 Units With Discharge Plenum and 50Z2,Z3035 Units
Table 12 Fan Performance 50ZG,ZN040 Units With Discharge Plenum and 50Z2,Z3040 Units
Table 13 Fan Performance 50ZG,ZN050 Units With Discharge Plenum and 50Z2,Z3050 Units
Table 14 Fan Performance 50ZG,ZN055 Units With Discharge Plenum and 50Z2,Z3055 Units
Table 15 Fan Performance 50ZG,ZN060 Units With Discharge Plenum and 50Z2,Z3060 Units
Table 16 Fan Performance 50ZG,ZN070 Units With Discharge Plenum and 50Z2,Z3070 Units
Table 17 Fan Performance 48ZG,ZN,ZT,ZW,Z6,Z8 and 50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9075
Table 18 Fan Performance 48ZG,ZN,ZT,ZW,Z6,Z8 and 50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9075
Table 19 Fan Performance 48ZG,ZN,ZT,ZW,Z6,Z8 and 50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9090
Table 20 Fan Performance 48ZG,ZN,ZT,ZW,Z6,Z8 and 50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9090
Table 21 Fan Performance 48ZG,ZN,ZT,ZW,Z6,Z8 and 50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9105
Table 22 Fan Performance 48ZG,ZN,ZT,ZW,Z6,Z8 and 50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9105
Table 23 Fan Performance Standard Capacity Power Exhaust
Size 030-050 Units
Size 055-155 Units
Table 24 Fan Performance Return/Exhaust Fan (48Z6,Z8 and 50Z6,Z7,Z8,Z9075-105 Units)
Table 25 Fan Performance High-Capacity Power Exhaust (48ZT,ZW075-105 and 50ZT,ZW,ZX,ZZ)
Table 26 Supply Fan Motor Limitations (Sizes 030-070)
Table 27 Supply Fan Motor Limitations (Sizes 075-105)
Table 28 High-Capacity Power Exhaust Systems Motor Limitations (48ZT,ZW and 50ZT,ZW,ZX,ZZ Units)
Table 29 Unit Design Airflow Limit
Table 30A Component Pressure Drops (in. wg) (Size 030-050 Units)
Table 30B Component Pressure Drops (in. wg) (Size 055-070 Units)
Table 30C Component Pressure Drops (in. wg) (Size 075-105 Units)
CONTROLS QUICK START
Two-Stage Constant Volume Units with Mechanical Thermostat
Two-Stage Constant Volume Units with Space Sensor
Variable Air Volume Units Using Return Air Sensor or Space T e mperature Sensor
Multi-Stage Constant Volume Units with Mechanical Thermos tat
Multi-Stage Constant Volume Units with Space Sensor
Economizer Options
Indoor Air Quality Options
Exhaust Options
Set Cloc k on VFD (If Instal led)
Programming Operating Schedules
SERVICE TEST General
Table 31 Service Test
Service T est Mode Logic
Independent Outputs
Fan s
Actuators
Cooling
THIRD PARTY CONTROL Thermostat
Alarm Output
Remote Switch
VFD Contr ol
Supply Air Rese t
CONTROLS OPERATION Modes
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Unit Configuration Submenu
System Mode
Fire- Smoke Control
Fig. 4 Mode Selection
Exceptions
Unit control free to choose HVAC Mode
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Cooling Contr ol
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Heating Control
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Static Pressure Control
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Fan Status Monitoring
Dirty Filter Switch
Economizer
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Building Pressure Contr ol
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Smoke Contr ol Modes
Indoor Air Quality Contr ol
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Humidification
Dehumidific ation and Rehe at
T emperature Compensated Start
Carrier Comfort Network
Alert Limit Configuration
Sensor T rim Configuration
Discrete Switc h Logic Configuration
Display Conf iguration
Remote Contr ol Switch Input
Hot Gas Bypass
Space T emperature Offset
TIME CLOCK CONFIGURATION
Hour and Minute (HH.MM) The hour and minute
Month of Year (MNTH) This variable is the current
Day of Month (DOM) This variable is the current
Day of Week (DAY) This variable is the current day
TROUBLESHOOTING
Complete Unit Stoppage
Single Cir cuit Stoppage
Service Analysis
Restart Procedure
T ransducer T r oubleshooting
trol uses 2 suction pressure transducers to measure the suction
Table 72 Gas Heating Service Analysis
Table 73 Electric Heat Service Analysis
Table 74 10K Thermistor vs Resistance (T55, T56, OAT, RAT, EDT, LAT Sensors) (F)
Table 75 10K Thermistor vs Resistance (T55, T56, OAT, RAT, EDT, LAT Sensor) (C)
Table 76 Suction Pressure Transducer Pressure (psig) vs Voltage (SSP-A, SSP-B)
For cing Inputs and Outputs
Run Status Menu
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Alarms and Aler ts
Table 86 Alert and Alarm
C
odes
Table 86 Alert and Alarm Codes (cont)
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MAJOR SYSTEM COMPONENTS General
Factory-Installed Components
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LEGEND FOR FIG. 15-25
CEPL130346-01 HK 50AA029 CE BO 430346
Fig. 26 Main Base Board (MBB)
J10
STATUS LEN
Table 87 Main Control Board (MBB) Inputs and Outputs
Fig. 27 Economizer Control Board (ECB) and Rooftop Control Board (RCB)
Table 88 Rooftop Control Board (RCB) Inputs and Outputs
Table 89 Economizer Control Board (ECB) Inputs and Outputs
Table 90 Staged Gas Control Board (SCB) Inputs and Outputs
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Table 91 Control Expansion Module (CEM) Inputs and Outputs
CEBD430351
Fig. 29 Controls Expansion Board (CEM)
J7
CEPL130351-01
TEST 1
J1 J2 J4 J3
J5
LEN STATUS
Table 92 Field Terminal Connections
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Accessory Control Compon ents
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Fig. 33 CCN System Architecture
SERVICE Service Access
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Adjustments
Cleaning
Lubrication
Refrigerant Feed Components
Thermostatic Expansion V alve (TXV)
Refrigeration Circuits
Oil Charge
Gas System Adjustment (48Z Only)
Moisture/Liquid Indicator
Filter Drier
Liquid Line Se rvice V alve
Compressor Discharge Service V alve
Relief Dev ices
Contr ol Circ uit, 115 V
Contr ol Circuit, 24 V
Gas Heat (48Z Only)
Compressor Remo val
APPENDIX A LOCAL DISPLAY TABLES
MODE RUN STATUS
MODE SERVICE TEST
MODE TEMPERATURES
MODE PRESSURES
MODE SETPOINTS
MODE INPUTS
MODE OUTPUTS
MODE CONFIGURATION
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MODE TIMECLOCK
MODE OPERATING MODES
MODE ALARMS
APPENDIX B CCN TABLES
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STATUS DISPLAY TABLES (cont)
SET POINT TABLE
CONFIG TABLES
CONFIG TABLES (cont)
SERVICE-CONFIG TABLES
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MAINTENANCE DISPLAY TABLES
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TIME SCHEDULE CONFIG TABLE
Allowable Entries: Day not selected = 0 Day selected = 1
APPENDIX C UNIT STAGING TABLES
STAGING SEQUENCE SIZE 030 UNITS 60 Hz
STAGING SEQUENCE SIZE 030 UNITS 50 Hz
STAGING SEQUENCE SIZE 035 UNITS
DAY FLAGS MTWTFSSH
STAGING SEQUENCE SIZE 040 UNITS 60 Hz
STAGING SEQUENCE SIZE 040 UNITS 50 Hz
STAGING SEQUENCE SIZE 050 UNITS
STAGING SEQUENCE SIZE 055 UNITS 60 Hz
STAGING SEQUENCE SIZE 055 UNITS 50 Hz
STAGING SEQUENCE SIZE 060 UNITS 60 Hz
STAGING SEQUENCE SIZE 060 UNITS 50 Hz
STAGING SEQUENCE SIZE 070 AND 075 UNITS
STAGING SEQUENCE SIZE 090 UNITS
STAGING SEQUENCE SIZE 105 UNITS
APPENDIX D VFD INFORMATION
VFD Operation
VFD Modes
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Thir d P arty Controls
VFD Diagnostics
Table C Fault Codes
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VFD Maintenance
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APPENDIX E MODE SELECTION PROCESS
APPENDIX E MODE SELECTION PROCESS (cont)
INDEX
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CONTROLS SET POINT AND CONFIGURATION LOG
CL-2
CL-3
CL-4
CL-5
CL-6
UNIT START-UP CHECKLIST
PRE-START-UP:
START-UP: