Carrier 38EZG - User Manual

38EZG, 38ETG, 38ESG
12, 13, 14 SEER Split-System
Air Conditioner with Puron®
Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before starting the
installation.
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SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions thor-
oughly and follow all warnings or cautions included in literature
and attached to the unit. Consult local building codes and National
Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words; DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
Before installing, modifying, or servicing system, main elec-
trical disconnect switch must be in the OFF position. There
may be more than 1 disconnect switch. Lock out and tag
switch with a suitable warning label. Electrical shock can
cause personal injury or death.
Puron® systems operate at higher pressures than standard
R-22 systems. Do not use R-22 service equipment or com-
ponents on Puron® equipment.
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installation of equipment.
1. Locate unit away from windows, patios, decks, etc. where unit
operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate for
unit capacity.
3. Run refrigerant tubes as directly as possible by avoiding
unnecessary turns and bends.
4. Leave some slack between structure and unit to absorb
vibration.
5. When passing refrigerant tubes through the wall, seal opening
with RTV or other pliable silicon-based caulk. (See Fig. 2.)
6. Avoid direct tubing contact with water pipes, duct work, floor
joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with a
rigid wire or strap which comes in direct contact with tubing.
(See Fig. 2.)
8. Ensure that tubing insulation is pliable and completely sur-
rounds vapor tube.
9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 2.)
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
When outdoor unit is connected to factory-approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
indoor unit of the same size when connected by 15 ft of
field-supplied or factory accessory tubing. For proper unit opera-
tion, check refrigerant charge using charging information located
on control box cover and/or in the Check Charge section of this
instruction.
IMPORTANT: Maximum liquid-line size is 3/8-in. O.D. for all
residential applications including long line.
IMPORTANT: Always install the factory-supplied liquid-line fil-
ter drier. If replacing the filter drier, refer to Product Data Digest
for appropriate part number. Obtain replacement filter driers from
your distributor or branch.
Fig. 1—Models 38EZG, 38ETG, 38ESG
A98525
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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 3a 2a
PC 101 Catalog No. 533-80079 Printed in U.S.A. Form 38ESG-1SI Pg 1 11-02 Replaces: New

Summary

Installation and Safety Overview

General Safety Considerations

Highlights critical safety warnings including electrical shock and system hazards.

Installation Recommendations

Provides guidance on unit placement, tubing practices, and filter drier installation.

Unit Installation Procedures

Site Check and Mounting

Covers unpacking, inspection, mounting pad, and clearance requirements.

Metering Device Installation

Details on checking and installing pistons (38EZG) or TXVs (38ETG/38ESG).

Refrigerant Piping and Connections

TXV Installation and Piping

Step-by-step guide for TXV installation, replacement, and making piping connections.

Refrigerant System Preparation

Tubing, Filter Drier, and Evacuation

Covers tubing, filter drier, brazing, and system evacuation methods.

Electrical Wiring Connections

Instructions for connecting ground, power, and control wiring to the unit.

Tube Sizing, Accessories, and Wiring Details

Refrigerant Tube Diameter Specifications

Details recommended liquid and vapor line tube diameters for various unit sizes.

Accessory Usage and Wiring Routing

Guide to accessory usage and routing of power and ground wires.

System Start-Up and Charging

Phase Monitor and Start-Up Sequence

Explains the phase monitor, correct start-up sequence, and operation.

Refrigerant Charge Verification

Procedures for checking and adjusting refrigerant charge using subcooling or superheat.

Final Checks and Maintenance

Final Installation Checks

Covers final steps like securing panels, informing the owner, and checklist completion.

Care and Maintenance Guidelines

General advice on periodic maintenance for optimal equipment performance.

Carrier 38EZG Specifications

General

Refrigerant	R-410A
Phase	1
Cooling Capacity	18000 BTU/h
Compressor Type	Inverter
Voltage	208/230V
Stages	Variable