Trane American Standard 4MXD8509A10N0 User guide

CONFORMSTO

ULSTD.1995

CERTIFIEDTO

CSASTD.C22.2

N0.236

3097844

About Trane and American Standard Heating and Air Conditioning

Trane and American Standard create comfortable, energy efficient indoor

environments for residential applications.

For more information, please visit www.trane.com or www.americanstan-

dardair.com

The manufacturer has a policy of continuous data improvement and it reserves the right to

change design and specifications without notice. We are committed to using environmentally

conscious print practices.

MS-SVN34D-EN 11 Jun 2020

Supersedes MS-SVN34C-EN (January 2016)

The AHRI Certified mark indicates company participation in the AHRI Certification program.

For verification of individual certified products, go to ahridirectory.org.

Installer’s Manual

Split System (R-410A)

Air Handler for

Multi-Split

Inverter System

9,000 Btu/h to 24,000 Btu/h

Ceiling Concealed Type Models:

4MXD8509A10N0

4MXD8512A10N0

4MXD8518A10N0

4MXD8521A10N0

4MXD8524A10N0

June 2020 MS-SVN34D-EN

WARNING

This equipment is to be serviced by professionally trained personnel

ONLY. Under NO circumstances should an unqualiﬁed person service it.

This equipment contains refrigerant under PRESSURE and operates at

HIGH VOLTAGE. Improperly installed, adjusted or altered equipment by an

unqualiﬁed person poses safety hazards including FIRE, ELECTROCUTION,

or EXPLOSION, which could result in death or serious injury.

Warnings and Cautions

Warnings and Cautions. Warnings are provided to alert installing

contractors to potential hazards that could result in personal injury or

death, while cautions are designed to alert personnel to conditions that

could result in equipment damage.

Your personal safety and the proper operation of this machine depend

upon the strict observance of these precautions.

Attention: Warnings and Cautions appear at appropriate sections

throughout this literature. Read these carefully.

WARNING: Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, if not

avoided, could result in minor or moderate injury. It may also be used

to alert against unsafe practices.

NOTICE:Indicates a situation that could result in equipment or

property-damage only accidents.

WARNING

Electrocution and Fire Hazards with Improperly Installed and Grounded

Field Wiring!

Improperly installed and grounded ﬁeld wiring poses FIRE &

ELECTROCUTION hazards.To avoid these hazards, you MUST follow

requirements for ﬁeld wiring installation and grounding as described in

the National Electrical Codes (NEC) and your local/state electrical codes.

All ﬁeld wiring MUST be performed by qualiﬁed personnel.

Failure to follow these requirements could result in death or serious injury.

Warnings and Cautions

WARNING

R-410A Refrigerant under Higher Pressure than R-22!

The units described in this manual uses R410-A refrigerant which operates at 50 to 70%

higher pressures than R-22. Use only R-410A approved service equipment. Refrigerant

cylinders are painted with "pink" color to indicate the type of refrigerant and may contain

a "dip" tube to allow for charging of liquid refrigerant into the system. For speciﬁc handling

concerns with R-410A, please contact your local sales ofﬁce.

Failure to use R-410A approved service equipment could result in standard equipment

exploding under R-410A higher pressure which could result in death or serious injury.

NOTICE

Use PVE Oil with R-410A Mini Split Units!

Most R-410A mini-splits use a PVE oil (Polyvinyl Ether 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 the PVE oil, contact your local sales ofﬁce.

USE ONLY THE FACTORY RECOMMENDED - DAFNE HERMETIC OIL FV50S - for servicing

these units.

Important!

Environmental Concerns

Scientiﬁc research has shown that certain man-made chemicals can affect the earth's naturally occurring

stratospheric ozone layer when released to the atmosphere. In particular, several of the identiﬁed chemicals

that may affect the ozone layer are refrigerants that contain chloroﬂuorocarbons (CFC's) and those containing

hydrochloroﬂuorocarbons (HCFC's). Not all refrigerants containing these compounds have the same potential

impact to the environment.The Company advocates the responsible handling of all refrigerants, including

industry replacements for CFC's such as HCFC's and HFC's.

Responsible Refrigerant Practices

The manufacturer believes that responsible refrigerant practices are important to the environment, our

customers, and the air conditioning industry. All technicians who handle refrigerants must be certiﬁed.The

Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling

of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or

municipalities may have additional requirements that must also be adhered to for responsible management of

refrigerants. Know the applicable laws and follow them.

Contents

Safety Precautions .................................................................................................................... 5

Operating and Working Temperature Ranges ........................................................................... 6

Clearance Requirements........................................................................................................... 7

Installation Location................................................................................................................... 8

Installing the Indoor Unit............................................................................................................ 9

Levelling the Indoor Unit.......................................................................................................... 10

Installation with Air Supply Connections.................................................................................. 10

Dimensions of the Air Supply Outlet and Return Air Outlet ..................................................... 12

Installation of the Return Air Connection ................................................................................. 12

Parts and Components of the Return Air Connection ............................................................. 13

Installation of the Condensate Pipe......................................................................................... 14

Insulation of the Drain Pipe ..................................................................................................... 14

Design of the Drain Pipe.......................................................................................................... 14

Precautions for the Drain Pipe................................................................................................. 15

Test the Drainage System ....................................................................................................... 16

Connecting the Pipe at the Indoor Unit.................................................................................... 17

Installation of the Connection Pipe.......................................................................................... 18

Flare Processing...................................................................................................................... 18

Bending Pipes ......................................................................................................................... 18

Connecting the Pipe at the Outdoor Units............................................................................... 19

Insulation of the Pipe Joints..................................................................................................... 20

Wiring the Indoor Unit.............................................................................................................. 20

Stranded Wiring....................................................................................................................... 21

Electrical Wiring....................................................................................................................... 22

Wiring Precautions .................................................................................................................. 22

Electrical Cable Connection .................................................................................................... 22

Grounding Requirements ........................................................................................................ 23

Installation of Controllers......................................................................................................... 23

Installation Checklist ............................................................................................................... 24

Test Operation ......................................................................................................................... 24

Wiring Diagrams...................................................................................................................... 25

Indoor Unit Dimensions ........................................................................................................... 26

Troubleshooting....................................................................................................................... 27

General Maintenance .............................................................................................................. 28

After Sales Service.................................................................................................................. 28

Ceiling Concealed Unit

WARNING This mark indicates a potentially hazardous situation which, if not avoided,

could result in death or serious injury.

CAUTION

This mark indicates a potentially hazardous situation which, if not avoided,

could result in minor or moderate injury. It may also be used to alert against

unsafe practices.

NOTICE This mark indicates a situation which could result in equipment and/or

property damage

Safety Precautions

Warnings, Cautions and Notices: Warnings, cautions and notices appear at appropriate intervals throughout

this manual. Warnings are provided to alert installing contractors to potential hazards that could result in

serious injury or death. Cautions are designed to alert personnel to conditions that could result in minor to

moderate injury. Notices alert to the possibility of equipment and/or property damage.

Your personal safety and the proper operation of this machine depend upon the strict observance of these

precautions.

WARNING

1. Installation should be left to the dealer or another professional. Improper installation may cause

water leakage, electrical shock or re.

2. Install the air conditioner according to the instructions given in this manual. Incomplete installation

work may cause water leakage, electrical shock or re.

3. Be sure to use the supplied or specied installation parts. Use of other parts may cause the unit to

come loose, resulting in water leakage, electrical shock or re.

4. Install the air conditioner on a solid base that can support the weight of the unit. An inadequate

base or incomplete installation may cause injury or property damage in the event the unit falls o󰀨

of the base.

5. Electrical work should be carried out in accordance with the installation manual and local, state

and National Electric Code (NEC). Insu󰀩cient capacity or incomplete electrical work may cause

electrical shock or re.

6. Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.

7. For wiring, use a cable that is long enough to cover the entire distance without a splice. Do not

use an extension cord. Do not put other loads on the power supply, use a dedicated power circuit.

(Failure to do so may cause abnormal heat, electric shock or re.)

8. Use the specied types of wires for electrical connections between the indoor and outdoor units.

Firmly clamp the interconnecting wires so their terminals receive no external stresses. Incomplete

connections or clamping may cause terminal overheating or re.

9. After connecting the interconnecting and supply wiring, be sure to shape the cables so that they

do not put undue force on the electrical covers or panels. Install covers over the wires. Incomplete

cover installation may cause terminal overheating, electrical shock or re.

10. After all installation is complete, check to make sure that there is no refrigerant leakage.

11. If any refrigerant has leaked out during the installation work, ventilate the room. (The refrigerant

produces a toxic gas if exposed to ames.)

12. When installing or relocating the system, be sure to keep the refrigerant circuit free from

substances other than the specied refrigerant (R410-A), such as air. (Any presence of air or

other foreign substance in the refrigerant circuit can cause an abnormal pressure rise or rupture,

resulting in injury.)

Ceiling Concealed Unit

13. During pump-down, stop the compressor before removing the refrigerant piping. If the compressor

is still running and the stop valve is open during pump-down, air will be sucked in when the

refrigerant piping is removed, causing abnormal pressure in the refrigerant cycle which could lead

to breakage and even injury.

14. During installation, attach the refrigerant piping securely before running the compressor. If the

compressor is not attached and the stop valve is open during pump-down, air will be sucked in

when the compressor is run, causing abnormal pressure in the refrigerant cycle which could lead

to breakage and even injury.

15. Be sure to establish a ground. Do not ground the unit to a utility pipe, arrester, or telephone

ground. Incomplete ground may cause electrical shock, or re. A high surge current from lightning

or other sources may cause damage to the air conditioner.

16. Be sure to follow your local, state and National Electric Codes when grounding this unit.

17. This appliance is not intended for use by persons with a lack of experience and knowledge, unless

they have been given supervision or instruction concerning use of the appliance by a person

responsible for their safety.

18. Children should be supervised to ensure that they do not play with the appliance.

19. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or

similarly qualied persons in order to avoid electrical risk during and after replacement.

CAUTION

Do not install the air conditioner in a place where there is danger of exposure to ammable gas

leakage. If gas leaks and builds up around the unit, it may result in re.

NOTICE

1. Establish drain piping according to the instructions in this manual. Inadequate piping may cause

ooding.

2. Tighten the are nut according to the specied method such as with a torque wrench. If the are

nut is tightened too hard, the are nut may crack and cause refrigerant leakage.

Ceiling Concealed Unit

Clearance Requirements

23.6” (600mm)

(150mm)

23.6” (600mm)

Air outle

Air inlet

inspection

opening

5.9”

Nut with

washer

500 mm 250 mm

Spring

pad

>19.7 inch >9.8 inch

NOTE: Be sure to place an inspection/service opening at the position indicated in the diagram above

for maintenance of the equipment.

Indoor Ceiling Concealed Unit

NOTE: The minimum distance from the oor to the bottom of the unit is 5.6 feet (1.7m).

The maximum distance from the oor to the bottom of the unit is 13 feet (4m) for adequate com-

fort control.

WARNING

1. Adequate Support Required!

2. The wall/ceiling structure must be adequate to support the weight of the unit. Failure to

ensure adequate structural support could result in the unit falling from its location which

could result in death, serious injury, or equipment or property-only damage.

Ceiling Concealed Unit

1. Avoid locating the indoor unit where the return and/or supply air may be obstructed

2. Select a location where it is easy to drain the condensing water and connect to the outdoor unit

3. Keep the indoor unit far away from heat sources, vapor and ﬂammable gas

4. Be sure that the installation of the indoor unit conforms to the installation dimension diagram

5. Be sure to leave enough space to allow access for routine maintenance; clearance between the

bottom of the indoor unit and the ﬂoor should not be less than 66"

6. Install in a location where the unit is more than 3 feet away from other electronic appliances such

as television, audio devices, etc.

7. Select a location where air ﬁlters can be easily removed and replaced

Installation Location

Indoor Unit

For instructions on installing the outdoor unit please refer to the installation guide

supplied with the selected outdoor unit for your application.

Installing the Indoor Unit

Ceiling Concealed Unit

WARNING

Hazardous Service Procedures!

The maintenance and troubleshooting procedures recommended in this section of the

manual could result in exposure to electrical, mechanical or other potential safety

hazards. Always refer to the safety warnings provided throughout this manual

concerning these procedures. When possible, disconnect all electrical power including

remote disconnect and discharge all energy storing devices such as capacitors before

servicing. Follow proper lockout/tagout procedures to ensure the power can not be

inadvertently energized. When necessary to work with live electrical components, have

a qualied licensed electrician or other individual who has been trained in handling live

electrical components perform these tasks. Failure to follow all of the recommended

safety warnings provided, could result in death or serious injury.

Mounting Location

1. Conrm the mounting location with the customer. Keep in mind the guidelines for a

safe installation location on page 8.

2. Ensure the hanging point is strong enough to support 4 times the weight of the unit.

3. The weight of the unit should be shared equally by the expansion bolts.

4. Insert the M10 (or larger) expansion bolts into the hole and knock the nail into the

bolt Refer to the outline dimension drawings for the distance between holes.

5. Insert the hanger on the indoor unit as shown below.

6. Install the indoor unit on the ceiling support bolts.

Air conditioning unit

Hanger bolt

Anchor

48mm

2 inch

Leveling the Indoor Unit

• If there is an opening in the ceiling, it should be reinforced to keep it at and prevent vibration.

• If the support structure of the ceiling is not strong enough, a beam made of angle iron can be

used to mount the unit to for added support.

• If the indoor unit is not installed in an air conditioned area, please insulate around the unit

to prevent condensation. The thickness of the insulation depends on the actual installation

environment.

After installation of the indoor unit, the leveling must be checked to make sure the unit is kept

horizontal fore and aft and a downward slope of 5° is kept toward the drain pipe left and right as

shown below.

Installation with Air Supply Connections

4 6 83 75

Return air Supply air

Return air

No. Name No. Name

1 Hanger 5 Plenum Box

2Return Air Connection 6 Filter Screen

3 Flexible Connection 7 Main Air Supply Connection

4Return Air Outlet 8 Air Supply Outlet

Check with a level.

Installation with Rectangular Connections

Ceiling Concealed Unit

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