OMNIZONE™ 50BV020-064, 50XJ064-104 Indoor Self-Contained

Remote Air-Cooled and Water-Cooled, VAV Systems 18 to 100 Nominal Tons

Controls Operation and

Troubleshooting

CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . . . . 1 -7

Comfort Controller Processor (PCB1) . . . . . . . . . . . . 1

Comfort Controller I/O Module (PCB2). . . . . . . . . . . . 2

Comfort Controller I/O Module (PCB3). . . . . . . . . . . . 2

Local Interface Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

PCB Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Control Module Communication. . . . . . . . . . . . . . . . . . 2

Carrier Comfort Network Interface. . . . . . . . . . . . . . . . 4

Optional and Field-Installed

Accessory Sensors/Devices . . . . . . . . . . . . . . . . . . . 4 Wiring Control Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CONTROLS AND FUNCTIONS. . . . . . . . . . . . . . . . . 8-15 Using the Local Interface Display . . . . . . . . . . . . . . . . 8 Automatic Run Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Power Up the LID Display . . . . . . . . . . . . . . . . . . . . . . . 12 Log On to the LID Display . . . . . . . . . . . . . . . . . . . . . . . 12 Change the Default Password . . . . . . . . . . . . . . . . . . . 12 Set the Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Configure Schedules. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Program Set Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Check System Parameters . . . . . . . . . . . . . . . . . . . . . . 14 Display Alarm History . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Configure Custom Programming Selections . . . . 14 Set Controller Address . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Log Off from Controller . . . . . . . . . . . . . . . . . . . . . . . . . 15

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-26 Occupancy Determination. . . . . . . . . . . . . . . . . . . . . . . 16 Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 16 Diagnostic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 50XJ Variable Frequency Drive Control. . . . . . . . . . 19 50BV Variable Frequency Drive Control . . . . . . . . . 22

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 27-29 Run Test Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 27 Forcing and Clearing and Input or Output . . . . . . . 27

Standard Diagnostic Features,

Alarm and Warning Lights . . . . . . . . . . . . . . . . . . . . 28

APPENDIX A — WIRING DIAGRAMS . . . . . . . . . 30-42

APPENDIX B — CONTROL SCREENS . . . . . . . . 43-64

Display Screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Configuration Screens . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Maintenance Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be hazardous due to system pressures, electrical components, and equipment location. Only trained, qualified installers and service mechanics should install, start up, and service this equipment.

When working on this equipment, observe precautions in the literature; on tags, stickers, and labels attached to the equip- ment, and any other safety precautions that apply. Follow all safety codes. Wear safety glasses and work gloves. Use care in handling, rigging, and setting this equipment, and in handling all electrical components.

Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation and service. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed.

This unit uses a microprocessor-based electronic control system. Do not use jumpers or other tools to short out components, or to bypass or otherwise depart from rec- ommended procedures. Any short-to-ground of the con- trol board or accompanying wiring may destroy the electronic modules or electrical components.

GENERAL

This publication contains Start-Up, Controls Operation, and Troubleshooting information for the 50BV,XJ units. These OMNIZONE™ packaged units are self-contained, water- cooled or remote air-cooled indoor units for use in VAV (variable air volume) applications. Units are equipped with Comfort Controller 6400 (CC6400) system controls. Refer to the unit Installation Instructions for unit layout.

MAJOR SYSTEM COMPONENTS

Comfort Controller Processor (PCB1) —

The central processing unit for the OMNIZONE system control is the Comfort Controller 6400. The Comfort Control- ler provides general purpose HVAC (heating, ventilation and air conditioning) control and monitoring capability in a stand- alone or network environment using closed-loop, direct dig- ital control. The Comfort Controller 6400 has been pre-pro- grammed to work in either stand-alone or CCN (Carrier Com- fort Network) system installations.

The CC6400 processor is designed to provide heating and cooling control, loop control, scheduling, and custom program- ming. The main processor provides 16 field points (8 input and 8 output). Additional points are provided by the I/O modules described on page 2. Table 1 lists the control inputs and outputs for all CC6400 modules.

Specifications for the Comfort Controller 6400 may be found in the Comfort Controller literature.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book

1

1

PC 111

Catalog No. 535-00137

Printed in U.S.A.

Form 50BV,XJ-2T

Pg 1

2-04

Replaces: 50BV,XJ-1T

Tab

2a

2b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Carrier 50XJ064-104 specifications Controls Operation Troubleshooting

50XJ064-104 specifications

The Carrier 50XJ064-104 is a high-efficiency rooftop air conditioning system designed to deliver exceptional cooling and heating capabilities for diverse commercial applications. One of the standout features of this model is its robust cooling capacity of 64,000 BTUs, making it suitable for mid to large-sized spaces. The 50XJ064-104 is engineered using advanced technologies to ensure energy efficiency and reliable performance, contributing to reduced operational costs and environmental sustainability.

One of the primary technologies employed in the Carrier 50XJ064-104 is the high-efficiency scroll compressor. This component plays a pivotal role in optimizing energy usage while delivering consistent cooling output. The system also incorporates an economizer that allows for enhanced energy savings by utilizing outdoor air for cooling when conditions are favorable. This not only decreases reliance on the compressor but also improves indoor air quality.

The microprocessor-based controls in the 50XJ064-104 provide precise temperature regulation, ensuring optimal comfort levels in various applications. These controls allow for easy programming and can be integrated into building management systems for centralized oversight. Additionally, the unit features a built-in fault detection and diagnostic system that aids in identifying potential issues before they escalate, minimizing downtime and maintenance costs.

The Carrier 50XJ064-104 is designed with durability in mind. It features a weather-resistant cabinet, designed to withstand harsh outdoor conditions and prolong service life. The high-quality insulation within the unit not only enhances energy efficiency but also minimizes noise levels, making it an ideal choice for urban environments where sound control is critical.

Another important characteristic is its environmentally friendly R-410A refrigerant, which has a lower impact on ozone depletion compared to older refrigerants. This aligns with Carrier's commitment to creating sustainable HVAC solutions that comply with current environmental regulations.

Overall, the Carrier 50XJ064-104 stands out for its combination of efficiency, advanced technologies, and durable construction. Whether for commercial buildings, retail spaces, or industrial applications, this rooftop air conditioning unit is designed to provide reliable performance and comfort year-round.