Name: Orion Control Systems AAON VCCX2
Brand: Orion Control Systems
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VCCX2 Controller Technical Guide

Secure sensor element and thermal

mastic strip to pipe with supplied wire

tie. Be sure to tighten wire tie snugly

to ensure good thermal contact.

Figure 25: Entering Water Temperature Sensor

WIRING

VCC-X EM1 Entering Water Temperature Sensor

Default Chapter3
- Table of Contents3
Overview9
- System Features9
- Applications10
- Part Number Cross Reference11
- Parts and Descriptions12
- Figure 1: VCCX2 Controller Components19
- VCCX2 Controller Components19
- Figure 2: VCCX2 Controller Dimensions20
- Refrigerant System Module (RSM)21
Dimensions20
- VCCX2 Controller20
- VCC-X EM1 Expansion Module22
- Figure 5: 12 Relay E-BUS Module Dimensions23
- Table 1: Voltage and Environment Requirements24
- VCCX2 Controller Inputs25
Wiring24
- Important Wiring Considerations24
  - Figure 6: VCCX2 Controller Input Wiring25
  - E-BUS Digital Room Sensor27
- VCCX2 Controller Outputs26
Figure 44: PREHEAT-X to VCCX2 Controller Wiring63
Figure 45: Modular Service Tool SD, Modular System Manager SD, System Manager TS-L, and Prism 2 Software Operator Interfaces64
Start - up and Commissioning64
- Powering up and Configuration64
- Table 3: VCC-X EM1 Inputs and Outputs65
- Table 2: VCCX2 Controller Inputs and Outputs (Continued)65
- Table 2: VCCX2 Controller Inputs and Outputs65
- VCCX2 Controller Inputs66
- VCCX2 Controller Outputs67
- VCC-X EM1 Expansion Module68
- 12 Relay E-BUS Expansion Module69
Inputs and Outputs65
- VCCX2 Controller and EM1 Module Input/Output Maps65
- Table 4: User-Configurable Relay Outputs69
Sequence of Operations70
- Supply Fan and Occupied/Unoccupied Operation70
- HVAC Modes of Operation71
- Economizer Operation73
- Dehumidification Mode74
- Reheat, Coil Suction, and Return Air Bypass Damper75
- Heating Mode76
- Ventilation Mode, Remote Contact Control, and Space Sensor Operation77
- IAQ Control, Morning Warm-Up and Cool-Down, and Single Zone VAV79
- Airflow Monitoring, Preheater, Low Ambient and Duct Static Press81
- Duct Static Setpoint Reset and Duct Static Pressure Control82
- Building Pressure Control and Exhaust Duct Static Pressure Control83
- MUA, CAV/MUA, and Space Temperature Control84
- VAV W/Sa Tempering, Air to Air Heat Pump and Standard Defrost85
- Heat Pump Adaptive Defrost, WSHP, EXV and Head Pressure86
- Evaporative Condenser, WSE, OA Lockouts and Temp Protection87
- Alarm Detection and Sensor Failure Alarms89
- Mechanical Failure and Failure Mode Alarms91
- Title 24 Economizer Alarms92
- Table 5: VCCX2 Controller Trend Logs93
- VCCX2 Controller Trend Logs93
- RSMV/RSMD/RSMZ Trend Logs and Trend Log Enumerated Values94
- Table 7: RSMV/RSMD Module Trend Logs94
- Table 6: RSMZ Module Trend Logs94
- RSMZ Trend Logs and Trend Log Enumerated Values95
  - Table 8: Trend Log Enumerated Values95
  - Table 9: RSMZ Module Comp Status Trend Log95
  - Table 10: RSMZ Module RSM Alarm Trend Log95
  - Table 13: RSMZ Module VFD Alarm 2 Trend Log96
  - Table 12: RSMZ Module VFD Alarm 1 Trend Log96
  - Table 11: RSMZ Module VFD Status Trend Log96
  - Trend Log Bit String Decoding97
- RSMZ Trend Logs and Trend Log Enumerated Values96
Table 14: VCCX2 Trend Log Bit Strings98
Table 14: VCCX2 Trend Log Bit Strings (Continued)99
Troubleshooting100
- VCCX2 Controller and EM1 LED Diagnostics100
- Figure 46: VCCX2 Controller LED Locations101
- Temperature Sensor Testing102
Table 16: Duct Static Pressure/Voltage for Duct Static Pressure Sensors103
Table 17: Building Static Pressure/Voltage for Building Pressure Sensors103
Appendix A - System Configuration104
- System Configurations104
- Stand-Alone System Layout105
- Networked System Single Loop Layout106
Figure 50: Typical Networked Multiple Loop System Layout107
Figure 51: LCD Display and Navigation Keys108
Appendix B - Vccx2 Lcd Screens108
- Navigation Keys108
- Table 18: Navigation Key Functions108
- Main Screens Map109
- Setting Screens110
- Status Screens111
- Alarm Screens112
- Output Override Screens113
- Air Balance Screens and Factory Test Mode Screen114
Appendix C - Vccx2 Bacnet115
- VCCX2 Bacnet ® Parameters115
Index135

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General

Brand	Orion Control Systems
Model	AAON VCCX2
Category	Controller
Language	English

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