Carrier Omnizone 50XCR06-24 Installation, Start-Up And Service Instructions Manual

CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1 - Complete Pre-Installation Checks . . . . . . . 8
Step 2 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . 8
Step 3 - Install Supply Ductwork . . . . . . . . . . . . . . . 9
Step 4 - Install Return-Air Ductwork . . . . . . . . . . . . 9
Step 5 - Check Return-Air Filters . . . . . . . . . . . . . . 9
Step 6 - Make Condenser Connections . . . . . . . . . 9
Step 7 - Install Condensate Drain Line . . . . . . . . . . 9
Step 8 - Complete Electrical Connections . . . . . . 10
Step 9 - Install Plenums (if Required) . . . . . . . . . . 13
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . 20
Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . . . 20
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cleaning Evaporator Coil . . . . . . . . . . . . . . . . . . . . . 21
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Indoor Fan Adjustment . . . . . . . . . . . . . . . . . . . . . . . 21
Pulley Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Belt Tension Adjustment . . . . . . . . . . . . . . . . . . . . . 21
Changing Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fan Bearing Replacement . . . . . . . . . . . . . . . . . . . . 21
Concentric Alignment . . . . . . . . . . . . . . . . . . . . . . . . 21
Evaporator Motor Starter Setting (after Lockout/
Tagout) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Checking System Charge . . . . . . . . . . . . . . . . . . . . . 23
Pressure Relief Device . . . . . . . . . . . . . . . . . . . . . . . 23
Current Protection Device . . . . . . . . . . . . . . . . . . . . 23
High and Low-Pressure Switches . . . . . . . . . . . . . . 23
Oil Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 24
START-UP CHECKLIST . . . . . . . . . . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air-conditioning components
and equipment can be dangerous. Only trained, qualified installers
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500278-01
Installation, Start-Up and
Service Instructions
Printed in U.S.A.
Indoor Self-Contained Systems
and service mechanics should install, start-up, and service this
equipment.
Page
When working on the equipment, observe precautions in the liter-
ature and on tags, stickers, and labels attached to the equipment.
Follow all safety codes. Wear safety glasses and work gloves.
.
Electrical shock can cause personal injury and death. Shut off
all power to this equipment during installation. There may be
more than one disconnect switch. Tag all disconnect locations
to alert others not to restore power until work is completed.
Use care in handling, rigging, and setting bulky equipment.
Personal injury could result.
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and goggles
and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from system
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. Refrigerant 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 neces-
sary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
DO NOT re-use compressor oil or any oil that has been ex-
posed to the atmosphere. Dispose of oil per local codes and
regulations. DO NOT leave refrigerant system open to air any
longer than the actual time required to service the equipment.
Seal circuits being serviced and charge with dry nitrogen to
prevent oil contamination when timely repairs cannot be com-
pleted. Failure to follow these procedures may result in dam-
age to equipment.
Form 50XCR-8SI Pg 1
Omnizone™
50XCR06-24
Remote Air-Cooled
WARNING
CAUTION
WARNING
CAUTION
2-2020 Replaces: 50XCR-7SI