AAON OE338-26B-VCCX2 User Manual

VCCX2 Controller
Technical Guide
VCCX2 Controller Code: DT003800-001/SS1088 Version 1.02 and up
Service Tool SD Code: DT001240-001/SS1063 Version 1.11 and up
System Manager SD Code: DT002150-001/SS1068 Version 1.11 and up
System Manager Touch Screen (Limited Access): DT004254-001/SS7013

AAON OE338-26B-VCCX2 Specifications

General

Brand	AAON
Model	OE338-26B-VCCX2
Category	Controller
Language	English

Summary

Overview

Wiring

Important Wiring Considerations

Covers general wiring guidelines, controller mounting, and power requirements for the VCCX2 Controller.

VCCX2 Controller Inputs

Details the analog and binary inputs available on the VCCX2 Controller and their connections.

VCCX2 Controller Outputs

Outlines the analog and relay outputs of the VCCX2 Controller and their wiring diagrams.

Start-Up and Commissioning

Powering Up and Configuration

Explains the initial power wiring, checks, and controller configuration steps required for setup.

Inputs and Outputs

VCCX2 Controller and EM1 Module Input/Output Maps

VCCX2 Controller Inputs

VCCX2 Controller Outputs

Sequence of Operations

Supply Fan and Occupied/Unoccupied Operation

Describes how the supply fan operates and how the controller determines occupied/unoccupied modes.

HVAC Modes of Operation

Dehumidification Mode

Heating Mode

Troubleshooting

VCCX2 Controller and EM1 LED Diagnostics

Explains the function of LEDs on the VCCX2 Controller and EM1 Module for troubleshooting.

Temperature Sensor Testing

Provides a table and instructions for testing temperature sensors by checking voltage and resistance.

Duct Static Pressure and Building Pressure Sensor Testing

Offers tables and instructions for testing duct static and building pressure sensors.

Appendix C - VCCX2 BACnet®

VCCX2 BACnet® Parameters