Airxcel CEA1012A Installation & Operation Manual page 4

Chapter 5 Troubleshooting
5.1 Overview ................................................................................................................................................41
5.2 Failure Symptoms Guide ........................................................................................................................42
5.3 Compressor Troubleshooting .................................................................................................................42
5.4 Control Board Diagnosis ........................................................................................................................43
Chapter 6 Maintenance
6.1 Scheduled Maintenance .........................................................................................................................44
Chapter 7 Warranty
7.1 Airxcel Commercial Group Limited Product Warranty .........................................................................45
Chapter 8 Start-Up Check List
8.1 Start-Up Check List ................................................................................................................................46
Appendix A
Installation Instructions for Field Installed Electric Heaters ...........................................................................50
Illustrations
Figure 1a. Typical Electrical Schematic - CEA/CGA (Non-Economizer) ..................................................12
Figure 1b. Typical Electrical Schematic - CEA/CGA (Economizer) ..........................................................13
Figure 2. Dry Bulb sensor ..........................................................................................................................15
Figure 3. Enthalpy Sensor Temperature Control Points ............................................................................16
Figure 4. Economizer Control Board ........................................................................................................17
Figure 5a. Setting the Speed for the Y1 and Y2 Operation for Indoor Motor ............................................20
Figure 5b. Second Stage Cooling Speed .....................................................................................................20
Figure 6. Output Termination for Indoor Motor Control Signal ...............................................................21
Figure 7. Outdoor Motor Speed Setting ....................................................................................................21
Figure 8. Output Termination for Outdoor Motor Control Signal .............................................................21
Figure 9. Communications SetUp .............................................................................................................22
Figure 10. Back Panel Configuration for CEA/CGA1012 Air Conditioners ..............................................33
Figure 11a. Fresh Air Hood Damper, Models 1024-1060 .............................................................................34
Figure 11b. Fresh Air Hood Damper, Models CEA/CGA1012 .....................................................................34
Figure 12a. Wall Mounting Detail .................................................................................................................35
Figure 12b. CEA/CGA1012 Wall Mounting Detail ......................................................................................36
Figure 13a. Humidistat Wiring Details ..........................................................................................................39
Figure 13b. Thermostat Connection Diagram ...............................................................................................39
Figure 13c. CommStat™ 3 HVAC Controller Wiring Detail ........................................................................39
Tables
Table 1 CFM @ External Static Pressure .................................................................................................7
Table 2 Return Air Filter Sizes .................................................................................................................7
Table 3 Shipping Weights .........................................................................................................................7
Table 4 Ambient Temperature Operating Range ......................................................................................7
Table 5 MODBUS Network Address DIP Swith Positions ................................................................... 23
Table 6a. MODBUS Discrete Registers ................................................................................................... 27
Table 6b. MODBUS Registers.................................................................................................................. 28
Table 7 Minimum Clearances .................................................................................................................30
Table 8 Voltage Limitations ....................................................................................................................30
Table 9 Maximum Static Pressure ..........................................................................................................34
ICE CEA/CGA1012-1060 Wall Mount AC I&O Manual
03/2021 Rev.1
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