Trane MXW Owner's manual

MS-SVX10A-EN

Installation, Operation,

Maintenance

MXW / TXK

R410A Split System - Wall Unit

Heat Pump - Up To 16.9 SEER

9,000 - 18,000 Btu/Hr

MXWA09 / TXKA09

MXWA12 / TXKA12

MXWA18 / TXKA18

3 MS-SVX10A-EN

Operation and Maintenance

Safety Precautions ........................................................................ 4

Specifications and Technical Data .................................................8

Operating Instructions .................................................................10

System Description ...................................................................... 11

Remote Control Description ..........................................................12

Care and Maintenance ................................................................ 15

Troubleshooting ........................................................................... 17

Installation

Installation Recommendations .................................................... 20

Installation Location..................................................................... 22

Installation - Indoor Unit .............................................................. 23

Installation - Outdoor Unit ............................................................ 26

Testing and Operation Verification ...............................................29

C o n t e n t

MS-SVX10A-EN 4

Safety Precautions

WARNINGS

All phases of this installation must comply with National, State and Local codes.

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 or

property damage. The manufacturer or seller

cannot be responsible for the interpretation of

this information, nor can it assume any liability

in connection with its use.

NOTICE:

Trane has always recommended installing

Trane approved matched indoor and outdoor

systems.

The benefits of installing approved matched

systems are maximum efficiency, optimum

performance and best overall system reliability.

These units use R410A 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 system. 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

whenver 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 Bulletin TRN-APG02-EN.

UNIT CONTAINS R-410A REFRIGERANT!

R-410A OPERATING PRESSURE EXCEEDS

THE LIMIT OF R-22. PROPER SERVICE

EQUIPMENT IS REQUIRED. FAILURE TO USE

PROPER SERVICE TOOLS MAY RESULT IN

EQUIPMENTDAMAGEOR PERSONALINJURY.

SERVICE

USE ONLY R-410A REFRIGERANTAND

APPROVED POE COMPRESSOR OIL.

MS-SVX10A-EN

Safety Precautions

MS-SVX10A-EN 6

Safety Precautions

MS-SVX10A-EN

Safety Precautions

MS-SVX10A-EN 8

Specifications and Technical Data

MS-SVX10A-EN

Specifications and Technical Data

MS-SVX10A-EN 10

Operating Instructions

Cooling Mode = Principle and Special Functions

Principle of Operation

Theairconditionerabsorbsheatfromtheair and discharges it to the oudoors, thereby cooling the indoor ambienttempera-

ture.Coolingcapacity decreases with the increase oftheoutdoortemperature.

Special Anti-freeze Function

Iftheair conditioner is operating underlow-temperatureconditionsin the cooling mode, frostwillappearonthe surface of

theindoorheatexchanger.Asthetemperatureoftheheatexchangerdecreases to 0°F or less, the microcomputerinthe

indoorunitwill stop the compressor operation inordertoprotecttheunit.

Principle of Operation

Theairconditionerabsorbs heat from the outdoor air bringing itindoorstoheatthespace,thereby increasing the indoor

ambienttemperature.Heatingcapacitydecreaseswiththereductionoftheoutdoortemperature.

Withthistypeofhotaircirculation system, the indoor temperature increases rapidly.

Usethisairconditionerwithotherheating equipment if the outdoortemperatureesextremelylow.

Special Defrost Function

Whentheoutdoor temperature is low but thehumidityishigh,the heat exchanger in the outdoorunitmayfrostupafter a

certainperiod of operation, thus decreasingtheheatingeffect in the room. When thisoccurs,thedefrost cycle is automati-

callyactivated,temporarilyhaltingtheheatingmodefunctionforaperiod of 8 to 10 minutes.

Boththe indoor fan andoutdoorfan will be stoppedduringthe defrost cycle.

Duringthedefrost cycle, the indicator ontheindoorunitwill blink and in some casesyoumaynoticesteam flowing from the

indoorunit. This is caused bythequick defrost cycle.

Heatingmodewillautomaticallyresumeitsoperationuponcompletionofthedefrostcycle.

Heating Mode = Principle and Special Functions

Special Anti-cold-air Function

Wheninthe heating mode, if the indoorheatexchangerfailsto reach a specific temperaturedegreeinthefollowing3 instances, the

indoorfan will not bestartedthereby avoiding to blowcoldairinto the space (within3minutes):

1) Start of heating mode; 2) End of auto defrost; 3) Heating under low ambient temperature

Conditions that Inhibit the Unit from Operating Normally

Undertemperatureranges as specified below,aprotectiondevicemaybeactivated which will stop theunitfromoperating.

Outdoor temperature

over 24°C Outdoor temperature Room

over 43°C temperature

Heating Outdoor temperature Cooling Dehumidifying below 18°C

Mode below -7°C Mode Mode

Room temperature Room temperature

over 27°C below 21°C

If the unit isrunforlongperiods in cooling or dehumidifyingmodeswhentherelative humidity is higher than80%(doorsand

windows are open), condensing may occur near the air outlet.

This manual suits for next models

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