Trane A4AC6018A1000B Montageanleitung

Installer’s Guide

February 2021 88-A4AC6001-1D-EN

SAFETY WARNING

Only qualiﬁed personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating,

and air-conditioning equipment can be hazardous and requires speciﬁc knowledge and training. Improperly installed, adjusted or

altered equipment by an unqualiﬁed person could result in death or serious injury. When working on the equipment, observe all pre-

cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.

Models

A4AC6018A1000B

A4AC6024A1000B

A4AC6030A1000B

A4AC6031A1000B

A4AC6036A1000B

A4AC6037A1000B

A4AC6042A1000B

A4AC6048A1000B

A4AC6060A1000B

Note: “Graphics in this document are for representation only.

Actual model may differ in appearance.”

Condensing Units

2 88-A4AC6001-1D-EN

IMPORTANT — This Document is customer property

and is to remain with this unit. Please return to service

information pack upon completion of work.

Section 1. Safety

WARNING

This information is intended for use by individuals

possessing adequate backgrounds of electrical and

mechanical experience. Any attempt to repair a central

air conditioning product may result in personal injury

and/or property damage. The manufacture or seller

cannot be responsible for the interpretation of this

information, nor can it assume any liability in connec-

tion with its use.

These units use R-410A refrigerant which operates

at 50 to 70% higher pressures than R-22. Use only

R-410A approved service equipment. Refrigerant

cylinders are painted a “Rose” color to indicate the

type of refrigerant and may contain a “dip” tube to

allow for charging of liquid refrigerant into the sys-

tem. All R-410A systems use a POE oil that readily

absorbs moisture from the atmosphere. To limit this

“hygroscopic” action, the system should remain sealed

whenever possible. If a system has been open to the

atmosphere for more than 4 hours, the compressor oil

must be replaced. Never break a vacuum with air and

always change the driers when opening the system

for component replacement. For specific handling

concerns with R-410A and POE oil reference Retrofit

Bulletins SS-APG006-EN and APP-APG011-EN or

APP-APG012-EN.

Extreme caution should be exercised when opening

the Liquid Line Service Valve. Turn counterclockwise

until the valve stem just touches the rolled edge. No

torque is required. Failure to follow this warning will

result in abrupt release of system charge and may

result in personal injury and /or property damage.

UNIT CONTAINS R-410A REFRIGERANT!

R-410A operating pressures exceed the limit of R-22.

Proper service equipment is required. Failure to use

proper service tools may result in equipment damage

or personal injury.

SERVICE

USE ONLY R-410A REFRIGERANT AND

APPROVED POE COMPRESSOR OIL.

WARNING

LIVE ELECTRICAL COMPONENTS!

During installation, testing, servicing, and trouble-

shooting of this product, it may be necessary to work

with live electrical components. Failure to follow all

electrical safety precautions when exposed to live

electrical components could result in death or serious

injury.

WARNING

If using existing refrigerant lines make certain that all

joints are brazed, not soldered.

CAUTION

Scroll compressor dome temperatures may be hot. Do

not touch the top of compressor; it may cause minor

to severe burning.

CAUTION

WARNING

WARNING!

This product can expose you to chemicals including lead,

which are known to the State of California to cause cancer

and birth defects or other reproductive harm. For more

information go to www.P65Warnings.ca.gov

WARNING

88-A4AC6001-1D-EN 3

Table of Contents

Section 1. Safety............................................................................................................................................................ 2

Section 2. Unit Location Considerations .................................................................................................................... 4

Section 3. Unit Preparation........................................................................................................................................... 5

Section 4. Setting the Unit............................................................................................................................................ 6

Section 5. Refrigerant Line Considerations................................................................................................................ 6

Section 6. Refrigerant Line Routing ............................................................................................................................ 8

Section 7. Refrigerant Line Brazing............................................................................................................................. 9

Section 8. Refrigerant Line Leak Check.................................................................................................................... 11

Section 9. Evacuation ................................................................................................................................................. 11

Section 10. Service Valves ......................................................................................................................................... 12

Section 11. Electrical - Low Voltage .......................................................................................................................... 13

Section 12. Electrical - High Voltage ......................................................................................................................... 15

Section 13. Start Up..................................................................................................................................................... 16

Section 14. System Charge Adjustment (Systems can be rated with TXV, EEV or Piston) ................................. 17

Section 15. Checkout Procedures and Troubleshooting......................................................................................... 22

Section 16. Refrigerant Circuits................................................................................................................................. 25

4 88-A4AC6001-1D-EN

Table 2.1

Section 2. Unit Location Considerations

2.1 Unit Dimensions and Weight

2.2 Refrigerant Piping Limits

1. The maximum length of refrigerant lines

from outdoor to indoor unit should NOT

exceed sixty (60) feet.

2. The maximum vertical change should not

exceed sixty (60) feet.

3. Service valve connection diameters are

shown in Table 5.1.

Note: For line lengths greater than sixty (60)

feet, Refer to Refrigerant Piping Application

Guide, SS-APG006-EN or Refrigerant Piping

Software Program, 32-3312-03 (or latest revi-

sion).

When mounting the outdoor unit on a roof, be

sure the roof will support the unit’s weight.

Properly selected isolation is recommended to

alleviate sound or vibration transmission to the

building structure.

60’

Max

Vertical

Change

Standard

Line Set

60’ Max

Line Length

60’

Max

Vertical

Change

Unit Dimensions and Weight

Models H x W x D (in)

Weight* (lb)

A4AC6018A

28.6 X 23.6 X 23.6 130

A4AC6024A

28.6 X 25.6 X 25.6 134

A4AC6030A

28.6 X 29.8 X 29.8 160

A4AC6031A

36.6 X 29.8 X 29.8 184

A4AC6036A

32.6 X 29.8 X 29.8 161

A4AC6037A

36.6 X 34.3 X 34.3 212

A4AC6042A

44.6 X 34.3 X 34.3 252

A4AC6048A

44.6 X 34.3 X 34.3 256

A4AC6060A

44.6 X 34.3 X 34.3 277

* Weight values are estimated.

88-A4AC6001-1D-EN 5

2.3 Suggested Locations for Best Reliability

Ensure the top discharge area is unrestricted for

at least five (5) feet above the unit.

Three (3) feet clearance must be provided in

front of the control box (access panels) and any

other side requiring service.

Do not locate close to bedrooms as operational

sounds may be objectionable.

Position the outdoor unit a minimum of 12” from

any wall or surrounding shrubbery to ensure

adequate airflow.

Outdoor unit location must be far enough away

from any structure to prevent excess roof runoff

water from pouring directly on the unit.

Section 3. Unit Preparation

3.1 Prepare The Unit For Installation

STEP 1 - Check for damage and report prompt-

ly to the carrier any damage found to the unit.

Min. 12” to

Shrubbery

Avoid Install

Near Bedrooms

Min 5’ Unrestricted

Access Panel

Min 3’

Unrestricted

Min. 12” to

Shrubbery

Min. 12”

to Wall

6 88-A4AC6001-1D-EN

Section 4. Setting the Unit

4.1 Pad Installation

When installing the unit on a support pad, such

as a concrete slab, consider the following:

• The pad should be at least 1” larger than the

unit on all sides.

• The pad must be separate from any structure.

• The pad must be level.

• The pad should be high enough above grade

to allow for drainage.

• The pad location must comply with National,

State, and Local codes.

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes

Table 5.1

Line Sizes Service Valve Connection Sizes

Model Vapor

Line

Liquid

Line

Vapor Line

Connection

Liquid Line

Connection

A4AC6018A

3/4 3/8 3/4 3/8

A4AC6024A

3/4 3/8 3/4 3/8

A4AC6030A

3/4 3/8 3/4 3/8

A4AC6031A

3/4 3/8 3/4 3/8

A4AC6036A

3/4 3/8 3/4 3/8

A4AC6037A

3/4 3/8 3/4 3/8

A4AC6042A

7/8 3/8 7/8 3/8

A4AC6048A

7/8 3/8 7/8 3/8

A4AC6060A

7/8 3/8 7/8 3/8

5.2 Factory Charge

The outdoor condensing units are factory

charged with the system charge required for the

outdoor condensing unit, ten (10) feet of tested

connecting line, and the smallest rated indoor

evaporative coil match. Always verify proper

system charge via subcooling (TXV/EEV) or

superheat (fixed orifice) per the unit nameplate.

TUBING INFORMATION

LINE TYPE REFRIGERANT TO ADD AT SPECIFIED

ADDITIONAL LENGTH

Suction

Line

Liquid

Line 20 ft 30 ft 40 ft 50 ft 60 ft

3/4” 3/8" 3 oz 9 oz 15 oz 21 oz 27 oz

7/8" 3/8" 3 oz 9 oz 16 oz 22 oz 28 oz

88-A4AC6001-1D-EN 7

5.3 Required Refrigerant Line Length

Determine required line length and lift. You will

need this later in STEP 2 of Section 14.

Total Line Length = __________ Ft.

Total Vertical Change (lift) = __________ Ft.

Line Length

5.5 Reuse Existing Refrigerant Lines

CAUTION

If using existing refrigerant lines make certain

that all joints are brazed, not soldered.

5.4 Refrigerant Line Insulation

Important: The Vapor Line must always be

insulated. DO NOT allow the Liquid Line and

Vapor Line to come in direct (metal to metal)

contact.

Vapor Line

Liquid Line

Insulation

For retrofit applications, where the existing indoor

evaporator coil and/or refrigerant lines will be

used, the following precautions should be taken:

• Ensure that the indoor evaporator coil and

refrigerant lines are the correct size.

• Ensure that the refrigerant lines are free of

leaks, acid, and oil.

Important: For more information see publication

number SS-APG006-EN.

8 88-A4AC6001-1D-EN

Section 6. Refrigerant Line Routing

6.1 Precautions

Important: Take precautions to prevent noise

within the building structure due to vibration

transmission from the refrigerant lines.

For Example:

• When the refrigerant lines have to be fastened to floor joists or other framing in a structure, use isolation type

hangers.

• Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings.

• Where the refrigerant lines run through a wall or sill, they should be insulated and isolated.

• Isolate the lines from all ductwork. • Minimize the number of 90º turns.

Comply with National, State, and Local Codes when

isolating line sets from joists, rafters, walls, or other

structural elements.

Isolation From Joist/Rafter

Side View

8 Feet Maximum

Secure Vapor line from joists using isolators every 8 ft.

Secure Liquid Line directly to Vapor line using tape, wire, or

other appropriate method every 8 ft.

Joist/Rafter

Isolator

Line Set

8 Feet Maximum

Isolation In Wall Spaces

Side View

Wall

Isolator

Line Set

8 Feet Maximum

Secure Vapor Line using isolators every 8 ft. Secure Liquid Line

directly to Vapor Line using tape, wire, or other appropriate

method every 8 ft.

8 Feet Maximum

88-A4AC6001-1D-EN 9

Isolation Through Wall DO NOT hang line sets from ductwork

Sealant

Insulation

Vapor Line

Wall

Ductwork

Isolator

Line Set

Section 7. Refrigerant Line Brazing

7.1 Braze The Refrigerant Lines

STEP 1 - Remove caps or plugs. Use a deburing

tool to debur the pipe ends. Clean both internal

and external surfaces of the tubing using an

emery cloth.

STEP 2 - Remove the pressure tap cap and

valve cores from both service valves.

10 88-A4AC6001-1D-EN

STEP 3 - Purge the refrigerant lines and indoor

coil with dry nitrogen.

STEP 4 - Wrap a wet rag around the valve body

to avoid heat damage and continue the dry nitro-

gen purge.

Braze the refrigerant lines to the service valves.

Continue the dry nitrogen purge. Do not remove

the wet rag until all brazing is completed.

Important: Remove the wet rag before stopping

the dry nitrogen purge.

Note: Install drier in Liquid Line.

NOTE:NOTE: Precautions should be taken to avoidPrecautions should be taken to avoid

heat damage to basepan during brazing. It isheat damage to basepan during brazing. It is

recommended to keep the flame directly off ofrecommended to keep the flame directly off of

the basepan.the basepan.

STEP 5 - Replace the pressure tap valve cores

after the service valves have cooled.

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