Carrier Omnizone 50XJ050 Controls, Start-Up, Operation And Troubleshooting

Controls, Start-Up, Operation and
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . .1,2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . . . . 2-6
Controller Processor 6126 (PCB1). . . . . . . . . . . . . . . . 2
I/O Flex Module 8160 (PCB2) . . . . . . . . . . . . . . . . . . . . . 2
Local Interface Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Control Module Communication. . . . . . . . . . . . . . . . . . 2
PCB Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Optional and Field-Installed
Accessory Sensors/Devices . . . . . . . . . . . . . . . . . . . 2
Wiring Control Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CONTROL AND DISPLAY. . . . . . . . . . . . . . . . . . . . . . 7-17
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
BACview Interface Device . . . . . . . . . . . . . . . . . . . . . . . . 9
Log On to BACview Display . . . . . . . . . . . . . . . . . . . . . . 9
Log Out of BACview Display . . . . . . . . . . . . . . . . . . . . . 9
Change Default User Password . . . . . . . . . . . . . . . . . . 9
Automatic Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Set the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Configure Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Adjust Set Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Configure Basic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Display/Set Runtime Alarms. . . . . . . . . . . . . . . . . . . . . 13
Display Alarms and Alarm History . . . . . . . . . . . . . . 13
Set Controller Address . . . . . . . . . . . . . . . . . . . . . . . . . . 14
50XJ Variable Frequency Drive (VFD) Control
and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
VFD Control and Display . . . . . . . . . . . . . . . . . . . . . . . . 15
VFD Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17,18
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Confirm the Input Power Phase Sequence . . . . . . . 17
Water Fill and Air Purge . . . . . . . . . . . . . . . . . . . . . . . . . 17
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20
Occupancy Determination. . . . . . . . . . . . . . . . . . . . . . . 18
Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 18
Diagnostic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 20-27
Standard Diagnostic Features,
Alarms and Alarm Lamps . . . . . . . . . . . . . . . . . . . . . 20
50XJ Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . 22
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . CL-1, CL-2

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
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500117-01
Troubleshooting
Page
Printed in U.S.A. Form 50XJ-2T
Water-Cooled Indoor Self-Contained Systems
with Multi-Protocol Controller 6126
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.
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and gog-
gles and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from sys-
tem using both high-pressure and low pressure ports.
c. Traces of vapor should be displaced with nitrogen
and the work area should be well ventilated. Refrig-
erant in contact with an open flame produces toxic
gases.
d. Cut component connection tubing with tubing cutter
and remove component from unit. Use a pan to catch
any oil that may come out of the lines and as a gage
for how much oil to add to the system.
e. Carefully unsweat remaining tubing stubs when nec-
essary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
Pg 1
Omnizone™
50XJ050-104
WARNING
CAUTION
WARNING
8-14 Replaces: 50XJ-1T