Carrier 38ETG - 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

Safety and Initial Considerations

Safety Considerations

General safety warnings and precautions for installation.

Installation Recommendations

Guidance on unit placement and tubing installation for optimal performance.

Unit Installation Steps

Step 1: Check Equipment and Job Site

Inspect the unit and job site before installation begins.

Step 2: Mounting Pad Installation

Procedures for mounting the unit securely and level on a pad.

Step 3: Clearance Requirements

Specifies required clearances for airflow, service, and unit placement.

Step 4: Operating Ambients

Defines the acceptable outdoor operating temperature ranges for cooling.

Step 5: Piston Installation (38 EZG)

How to check and install the AccuRater piston for the 38EZG model.

Step 6: TXV Installation (38 ETG;38 ESG)

Instructions for installing the TXV for 38ETG and 38ESG models.

Piping and Evacuation

Step 7: Making Piping Connections

Detailed steps for connecting refrigerant tubing and related components.

TXV and Piping Installation Precautions

Important cautions for TXV installation and handling refrigerant piping.

Evacuate Refrigerant Tubing and Coil

Procedures for evacuating the system using deep or triple vacuum methods.

Final Tubing Check

Inspection of tubing for secure connections and proper routing.

Electrical Connections and Start-Up

Install Liquid-Line Filter Drier

Instructions for installing the required liquid-line filter drier.

Route Ground and Power Wires

Guidance on routing electrical power and ground wires.

Connect Ground, Power, and Control Wiring

Steps for making all necessary electrical connections safely.

Step 9: Compressor Crankcase Heater

Instructions for installing and powering the compressor crankcase heater.

Step 10: Install Electrical Accessories

Refer to individual instructions for installing accessory kits.

Step 11: Start-Up Procedures

Essential precautions and steps before initiating system operation.

System Charging and Final Checks

Step 12: Check System Charge

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

Step 13: Final Checks

Final inspection and handover tasks before leaving the job site.

Carrier 38ETG Specifications

General

Refrigerant	R-410A
Series	Performance Series
Cooling Capacity	36000 BTU/h
Compressor Type	Scroll
Power Supply	208/230V, 1-phase, 60Hz