Mg Wmms-12ec-v2b(59) User manual

This product is designed and manufactured free from defects in material and workmanship under the normal use and

maintenance. Installation, operation, maintenance and service shall follow or Local Codes and related manuals from us.

Otherwise, damage to equipment or property even injury to people may occur.

Installer: Read this instruction manual before installation. Remember to complete in full the warranty cardon the back

of this manual warranty card.

User: Keep this instruction manual for future maintenance and service use.

Servicer: Use this instruction manual for service reference.

Literature Part No.: LIT-WMMS-(59)2-EC-DC IVTR-II-20131130

For Ceiling Cassette Styles-59, 12 to 24K Btu/h Cooling and Heat Pump

This Manual is Subject to Change to Reflect Our Continuous Effort for Engineering Improvement without Prior Notice.

YMGI is the Trademark and Property of YMGI Group. Copyright of YMGI Group 2013.

YMGI, Engineered HVAC & R Products for Maximum Green World and Better Tomorrow

YMGI Group

POB 1559

O'Fallon, MO 63366, USA

Tel: (866)833-3138 Fax: (866)377-3355

Web Site: www.ymgigroup.com

Email: [email protected]

WMMS-24EC-V2B(59) (2)

LITERATURE: LIT-WMMS-(59) (2)-EC-DC IVTR-II-20131130

INSTALLER'S INSTRUCTION & USER'S MANUAL

DC INVERTER MULTIPLE ZONE (59)2

SYMPHONY CHOIR

INDOOR UNIT-CEILING CASSETTE (EC)

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

WMMS-12EC-V2B(59) (2)

WMMS-18EC-V2B(59) (2)

CONTENTS

MUST READ-1

All Units Shall Be Installed by Experienced or Licensed Contractor Or

Technician. Read Manuals before Installation.

YMGI Group Shall NOT Take Any Responsibilities for Any Damage or

Loss Due to Do-It-Yourself(DIY) self-installation and other Improper Installation or Operation or

Natural Disaster.

Connect All Wiring Securely. Loose Wire or Other Bad Contact May Cause

Arc or Overheating and Fire Hazard.

Following NEC, State and Local Codes and Installation Instructions of All

Units, Otherwise Unit Warranty Will Be Void and Serious Damage To People Or Property May Be

Caused.

Don't Supply Power until All Wiring and Tubing and Checking is

Completed. Ground the Unit Following Instructions and NEC, State and Local Codes.

P2 OF 44P1 OF 44

INTRODUCTION

NAMES OF PARTS

UNIT SPECIFICATIONS

RECOMMENDED TOOLS FOR INSTALLATION

INSTALLATION NOTES

INSTALLATION ACCESSORIES

INSTALLATION CLEARANCE

INDOOR UNIT INSTALLATION

WIRING DIAGRAMS

TEST AND CHECK ITEMS AFTER INSTALLATION

SAFETY CAUTIONS

OPTIMUM OPERATION

TROUBLE SHOOTING

CARE AND MAINTENANCE

WARRANTY AND TECH. SUPPORT

LIMITED PRODUCT WARRANTY POLICIES

LIMITED PRODUCT WARRANTY REGISTRATION CARD

CUSTOMER AND TECHNICIAN MUST READ

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

REMOTE CONTROL-BUTTON NAME & FUNCTIONS

USER NOTES AND INSTALLATION/SERVICE/MAINTENANCE NOTES

WELCOME AND PLEASE READ THROUGH MANUALS

INSTALLING TECHNICIAN/CONTRACTOR'S JOBS AND RESPONSIBILITIES

Toll Free Number: (866)833-3138

Email: [email protected]

If you have any questions about your unit or even doubt if the unit has any problem, you can first check against

the mannds. If you can not find answers, then you can contact your local installer or service technician to

physically inspect the unit. If at the time of inspection the installer or service technician have any questions they

can contact YMGI technical support division directly at:

Dear Customer(s)/end User(s)/unit Purchaser(s)/installer(s)/Contractor(s):

Thanks for choosing YMGI products.

The YMGI equipment you purchased is either a split-type or a self-contained cooling/heating system which

requires an installer's license, certification, knowledge, experience, carefulness and details for a successful and

good installation. This equipment is different from those window or portable air conditioners you can normally

purchase from local retail stores such as Home Depot, Lowe's, Sears, etc. which the manufacturer may not

require licensed personnel to install.

Reading and following the YMGI Group's recommendations, suggestions, and requirements, written in the

following pages and other documents, is the first step to ensuring a smooth and trouble free installation & proper

operation of your products for many years to come.

YMGI Group, POB 1559, O'Fallon, MO 63366 is the only party who holds the final explanation (in authorized

writing) about any descriptions or data in YMGI-published materials, including but not limited to

YMGI product brochures, manuals, pamphlets, catalogs, videos and any other media. YMGI's distributors,

installers, dealers, agents, customers or any other third parties shall not supersede YMGI to make any

explanation about what YMGI-published materials mean. Any uncertainty or questions, arising from YMGI

distributors, installers, dealers, agents, customers or any other third parties, should be passed directly to YMGI

for an explanation in writing.

IMPORTANT NOTE-YMGI HOLDS FINAL EXPLANATION:

The quality of the installation plays a key role in whether the units will work well and for an extended period of

time. The information we provide in our manuals is for the sole purpose of reminding you and your installer.

It is our ultimate goal to help insure that your YMGI units are installed properly and correctly from the very

beginning to the very end. This ensures that your YMGI units will work well and not only provide a comfortable

room but also peace of mind.

YMGI doesn't recommend nor allow any do-it-yourself (DIY) installation (partially or fully), since DIY will cause

problems sooner or later to your units and your upfront saving is Not saving down the road.

YMGI warranty doesn't cover any DIY units.

MUST READ-1

P4 OF 44P3 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

1. Be sure to hire only one certified, licensed HVAC Company to complete 100% of the installation so that all

details of the installation are clear, complete and well taken care of.

2. Be sure to have ONLY the licensed HVAC professional perform all parts of the installation. Factory Warranty

will be lost if any portion of the installation is not performed by licensed HVAC contractor. DIY or partial DIY will

void ALL factory warranties. One example of partial DIY would be calling the HVAC technician to release

refrigerant or the sort while other installation has or is to be conducted by non-HVAC technician.

3. With hiring a technician that is offering their services as a "side job" and not through their licensed HVAC

company may pose a possible risk of an incomplete or unsatisfactory installation of no guaranteed

workmanship and lack of further service, if needed.

4. Have the installing technician read in full the installation manual of the product model you have. Some details

may vary and some may be the key to determine the success and quality of the installation. Experience with

certain manufacturer may not be applied fully to another manufacturer. For example, wiring, refrigerant

adjustment and trial testing procedures may differ from manufacturer to manufacturer and model to model.

Any ignoring or negligence may cause unit failure or damage which could be irrevocable and permanent.

5. All of YMGI's products are fully tested and have passed rigorous safety and performance standards and others

related to the industry, before being packed and shipped. YMGI only uses famous brands as suppliers for their

parts that are also known for their high quality and performance. The quality of the installation plays a key role

as much as up to 90% importance in your unit's overall performance and lifetime. A poor installation can result

in unit failure and inefficiency either immediately or over a period of time.

6. Some licensed contractor/technician may make a mistake some time. YMGI doesn't supervise nor is able to

control their installation.It is key that the installer take each variable into account during the initial

installation in order to ensure a complete and professional installation and properly working units.

ATTENTIONS

The following will cause damage to the unit and key components factory

warranty:

and the loss of your unit's

1. Any foreign substances introduced into the system as a result of failure of not sealing the ends of the

refrigeration piping before pulling through structures at time of installation.

2. Not installing an oil P-trap in the suction copper line where indoor unit is located 18' or more below outdoor unit.

3. Cross piping and/or cross wiring on any units including more than one single zone or a multi zone system.

4. Not conducting a positive leak check by charging the system with dry-nitrogen and soap bubble testing.

5. Not conducting a negative leak check by evacuating the copper lines for 30 minutes. Vacuum must be held at

500 micron or better for at least 5 minutes, starting from 5 minutes after the vacuum pump is shut off.

6. Not conducting a positive leak check prior to the negative leak check.

7. Not selecting the correct size of wire or circuit breaker.

8. Not answering ALL questions in the technician's checklist inside the warranty registration form.

1. Any kinks or improper bending of the copper piping.

2. Any improper flaring or not centering of the flare with the nut, or not tightening any connection.

3. Not trial testing each indoor unit individually.

4. Not reading technical data (temp/time/pressure/current) after the system is stabilized (normally compressor

needs to work at least 10 minutes). Data read too early may lead to inaccurate or false judgment or even a

false sense of security.

In an effort to protect our customers from any possible faulty installation which can lead to premature unit failure,

we like to provide the above information to you in addition to the technician. You can judge yourself and

observe while your system is being installed, though your observation may not be treated as any guarantee

whether your system would be installed properly and professionally. If at any time you feel there may be an

installation issue, please have your technician contact YMGI at (866)833-3138 x 703 to clear your questions.

The following may be overlooked, ignored, or treated as not a problem during your installer's installation,

but actually will cause your unit to underperform or even cause unit failure.

WELCOME AND PLEASE READ THROUGH MANUALS

1) Check with the customers to find out detailed information of structure to be conditioned, local weather (typical design and

extreme temperature/humidity conditions, cooling and heating hours), previous and existing HVAC equipment, usage and

dependence on the new HVAC equipment or the YMGI products.

2) Performing a cooling/heating load calculation by using commercially available professional programs/methods such as

Right-J (Manual J) for residential HVAC applications/jobs and Right-CommLoad (ASHRAE RTS/CLTD) for light commercial

and commercial HVAC applications/jobs.

3) Check with YMGI distributor/sales or contact manufacturer directly to obtain information to fully understand YMGI products,

including but not limited to product features, cooling/heating performance-at standard ratings/conditions and extreme

conditions, allowed indoor and outdoor temperature/humidity ranges, installation, operation, maintenance, service,

warranty, parts and so on.

4) Properly select correct (most suitable) YMGI product models (of units and accessories) for your HVAC applications/jobs

and list them in your proposal/quote, in writing, on your company's quote form or letter head, basing upon the information

you get from 1), 2) and 3) above.

5) List your currently valid HVAC license # and EPA # in your proposal/quote.

6) Make sure you are the only party to perform the whole installation job and you will not sub-contract any part of the

installation to any non-licensed parties/persons. You will be solely responsibile for the full installation that you have been

contracted for.

7) Check to make sure you have all the materials you need to properly and correctly finish the installation. The YMGI units

and accessories may be just a portion of what you need. YMGI employees and YMGI distributors/sales, dealers and agents

are not installers and may only be able to provide suggestions to you, but you are the only sole decision maker to

determine what other materials you must need and/or the customer may want to fulfill the installation job.

8) Check against both NEC and your local codes to make sure all the installation of YMGI units and accessories meet these

requirements.

9) Connect the unit to correct electrical power source. In the area where lightning or storm incurs frequently, a proper type/

size of power surge protector needs to be installed between the outdoor unit and power source.

10) Select proper types and sizes of HVAC circuit breakers, disconnect switch boxes, wires and conduits from circuit breaker

to disconnect box and then from disconnect box to outdoor unit.

11) Select proper location to mount indoor units and outdoor units with all factory requirements being followed (cooling/

heating/air is not blocked or restricted, mounting structure is secure, aesthetical looking, installation convenience is

considered, maintenance/service clearance is ensured and all applicable codes are met and etc.).

12) Cap/tape the two ends of every copper line before running them through structures to keep from any foreign substances

entering into pipe and causing contamination. Label them A-A, B-B, C-C, D-D, or other marks on each pair of copper

line/wiring cable set to keep from any possible cross-piping or cross-wiring in multiple zone installations or where pipes for

different single zone systems are close to one another.

13) Secure the wiring cables that connect between indoor unit and outdoor unit, following applicable NEC and local codes for

your particular installation. If there is no special NEC or local code to govern how these wires are to be installed, you can

tape/cable tie them along with insulated copper line.

14) Tighten all pipe and wire connections to keep from any possible leakage or false connection.

15) Conduct positive pressure leakage checking of inter-connecting copper lines between each indoor unit and outdoor unit by

charging dry-nitrogen at outdoor unit service port (note: don't back-seat stopping valve, at this time). Liquid soap solution

shall be applied at all pipe connections to check for leakage. A1/4-5/16" hose/valve adaptor may be needed if you have

traditional manifold of 1/4" connection hose.

16) If there is no positive leaking, then conduct negative pressure leakage checking of inter-connecting copper lines between

each indoor unit and outdoor unit by pulling vacuum at outdoor unit service port (note: don't back-seat stopping valve, at

this time) and checking if the vacuum level 500 Micron can be held for at least 20 minutes.

17) If there is no leakage found at refrigeration pipe connections, flip up the indoor unit face panel and remove filter, carefully

pour some clear water onto the up-right aluminum coil surface to test if the water can drain out of each indoor unit freely

without any leakage being found.

18) If there is water leakage found, locate the source of the leak and correct. Only after everything is clear engage the correct

electrical power to the system.

19) Then back-seat stopping valves of outdoor unit to release refrigerant from outdoor unit into inter-connecting pipes and

indoor unit.

20) Check to make sure both indoor unit and outdoor unit are powered on correctly before controlling the indoor unit to

operate in fan mode first. Then move on to test cooling, dehumidifying/drying, heating and other modes.

21) Read refrigerant pressures and pipe/valve temperatures only until the system is stabilized (normally 10 minutes after

cooling/heating mode is started successfully). Put this data into the technician checklist in the lower half section of the

Limited Product Warranty Registration Card/Form.

22) Adjust refrigerant charging level (remove refrigerant if pipe is shorter/temperature is colder; add refrigerant if pipe is

longer/temperature is warmer), following manufacturer's instructions, if average pipe length is shorter or longer than 25'

and pressure/temperature readings at outdoor unit service valves are not falling into normal ranges.

23) Explain to the user/owner(s) about proper unit operation and maintenance and leave your contact information for them to

reach you easily.

24) If the customer finds the unit doesn't work properly and cannot resolve the issue themselves, check the customer's

units/parts/accessories and correct the problem if there is any. Communicate with YMGI-technical support line (866)833-

3138 x 703, if needing help.

Following these requirements will aid in ensuring the units to be installed to the general HVAC practicing standards and

necessary factory requirements, finding any possible problems early, preventing any further damage to the unit and helping

ensure a properly working unit over its lifetime.

INSTALLING TECHNICIAN/CONTRACTOR'S JOBS AND RESPONSIBILITIES

WARRANTY POLICIES

AND REGISTRATION

CARD/FORM

WARRANTY POLICIES

AND REGISTRATION

CARD/FORM

P5 OF 44 P6 OF 44

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

LIMITED PRODUCT WARRANTY POLICIES

The YMGI products are designed and manufactured free from defects in workmanship, and materials for normal

use. However, for any reason, including many handlings and occasions between the YMGI factories/warehouses

and where you receive the products, the unit doesn't work, YMGI Group will help to remedy the occurrence in the

following warranting ways:

Compressor: YMGI will warrant the compressor of YMGI-validated and approved warranty filing, for a period of

5 years from the date of successful installation at original location.

Parts: YMGI will warrant parts of YMGI-validated and approved warranty filing, for one year from the date of

successful installation at original location.

All warranty compressors and parts replaced will become the sole property of YMGI Group and must be returned

to YMGI Group upon request. Warranty parts may be new or refurbished. All parts are tested and approved

before shipping.

At no time does the YMGI Group warrant labor cost of any type. Warranty will start from the date of

successful installation at initial location, or 90 days as of original shipping date from YMGI Group,

whichever comes first.

This is a standard warranty of limited liability and DOES NOT cover the following:

* Any damage or repairs to properties, or persons as an incident or consequence of improper or faulty

transportation, installation, operation, maintenance or service.

* Damage caused by frozen or broken water hoses or refrigeration pipes in the event of equipment failure.

* Any damage as a result of floods, fire, wind, lightening, accidents, corrosive atmosphere or any other conditions

beyond the control of YMGI Group.

* Any damage due to interruption or inadequate electrical service to equipment.

* Any products that are installed outside the US or Canada.

* Any unit that has been moved from the original installation address.

* Any labor costs associated with the installation or service of the unit.

* Poor unit performance due to improper unit selection (SEER, Unit size).

To validate the above warranties, ALL the following conditions must all be fulfilled:

1. The unit was fully (100%) and successfully installed by licensed or certified HVAC technicians.

2. The unit was installed following all NEC, state and local codes.

3. The unit was installed following all instructions and manuals made by YMGI Group.

4. ALL fields, especially the technician-checklist, of the Limited Warranty Registration Card/Form were filled

completely by the installing technician and signed by both the installing company technician and the unit owner.

5. The Limited Warranty Registration Card/Form and a copy of the original installing company's invoice had

been received by YMGI Group-Warranty Dept., POB 1559, O'Fallon, MO 63366, within 7 days of successful

installation.

No warranty filing will be validated or approved, if any one of the above 5 conditions is not met.

Product registration doesn't guarantee the validity of this limited warranty statement.

Steps to follow for warranty part replacement:

1. Installing or service technician contacts YMGI tech support at 1-866-833-3138 ext 703 from the jobsite, to

double-check and confirm with YMGI Technical support the exact part(s) needed to fix all the problems.

2. YMGI will check the customer's warranty filing. Parts for validated and approved warranty will not be charged.

Parts of invalid warranty filing or unapproved warranty requesting, will be charged accordingly.

3. YMGI will ground ship out the parts ASAP. Expedited shipping is available at the customer's cost.

4. Replacement parts of approved warranty registration are to be warranted for the remainder of the 1 year parts

and 5 year compressor warranty. Purchasing of replacement parts of invalid warranty filing or unapproved

warranty requesting, will be as they are and bear no warranty.

YMGI keeps on improving products with various engineering changes without prior notice. Such improvements

or changes include but not limited to product specification, appearance, functions, sizes, packaging and others.

These improvements or changes will not void the limited warranty stated herein. YMGI keeps the final explanation

of this warranty policy.

LIMITED PRODUCT WARRANTY REGISTRATION CARD

LIMITED PRODUCT WARRANTY

REGISTRATION CARD / FORM

YMGI to Fill Top Portion, at Shipping, and Keep Copy A; Center Copy B for Installer to Fill and Mail back to YMGI; Bottom Copy C for Customer to Fill and Keep

Installation Finished and Unit Works Successfully.

Print Name of Installation HVAC Technician:

Signature:

Date and time:

Installation Finished and Unit Works Successfully.

Print Name of Owner:

Signature:

Date and time:

1) Are you the only one to install whole system?

If not, % of installation done by you (HVAC technician).

3) Did you read the User Manual and Installation Instruction, before you

started the installation?

5) Supply electrical power V/Ph/Hz measured at wiring terminal block of

Indoor unit: outdoor unit:

7) Wire gauge, length and terminal colors between circuit breaker/

disconnect switch to outdoor unit:

9) The size of HVAC circuit breaker/fuse or disconnect switch to the

outdoor unit:

11) What is the refrigerant pipe length between each indoor unit and the

outdoor unit? Unit A Unit B Unit C Unit D...

13) What is the elevation difference between each indoor unit and the

outdoor unit? Unit A Unit B Unit C Unit D...

(indoor unit above outdoor unit +, below -)

15) Where is the outdoor unit located?

Ground wall balcony roof other

location or pad

17) Were the refrigerant pipe ends capped or taped seal, prior to running

them through structures to keep debris from entering the copper lines?

21) Did you check if the compressor can be started and stopped in a

correct (design) manner?

25) Have you checked all unit functions, with customer's witness, and all

functions are correct?

27) Do you provide regular one-year free technical service for this

installation?

2) What had been done, prior to your arrival?

4) Who unpacked the unit and accessory boxes to check for damage?

6) Incoming electrical power V/Ph/Hz measured at terminal blocks of

indoor unit: outdoor unit:

8) Wire gauge, length and terminal colors between each indoor and

outdoor unit: Unit A Unit B Unit C Unit D...

12) Where is/are the indoor unit(s) located?

Unit A Unit B Unit C Unit D...

16) Have you checked to make sure there is no cross-piping and no

cross-wiring between any two indoor units (zones)? How did you do it,

who was with you?

22) If copper length were not made to the supplied or recommended

refrigerant pipe length, how much refrigerant added or deducted?

26) Did you show the user how to operate the unit? Did he/she understand you?

Contact Where the Units are Installed:

Name:

Address:

City: State (Province):

Contact of the Installing HVAC Contractor/Technician:

Technician Full Name (Print):

HVAC Technician's Company Name:

Address:

Currently Licensed or Certified HVAC Technician License or Certification Number:

Official Phone # to Check the License Validity:

Phone: Fax:

Email:

Country:

YMGI-Recommended Contractor/Technician:

Phone:Fax:

Email:

City:State (Province):

License Approved or Certified by:

The Company the

Unit Was Sold Though:

Did the Company

Pay to YMGI:

Installation Invoice Attached

to the Registration Card

For

YMGI

Use

Only

Unit #5

Unit #6

Unit #7

Unit #8

Outdoor Serial Number (One Outdoor

Unit, One Registration Card/Form):

Indoor

Serial

Number:

For Multi

Zone Units

Unit #1

Unit #2

Unit #3

Unit #4

Shipping Packing

List Number:

Registration Card

Serial No.

Date the Filled Registration

Card YMGI Received:

Unit(s) Work

Successfully (Yes/No):

Warranty

Approved

Warranty

Denied

18) Have you checked and run cooling or heating, one unit by one unit, all

working fine?

20) Did you vacuum correctly to check the connecting pipes and indoor unit for

leakage, what was the micron gauge reading, for how many minutes?

24) What were the measured temperatures (probe not touching any metal):

O O O

At cooling: indoor return air F, discharge air F, and outdoor F

O O O

At heating: indoor return air F, discharge air F, and outdoor F

23) Measured refrigerant pressures at outdoor service suction valve, when unit

was st. O

Heat pump (PSI): Cooling (PSI): Outdoor Ambient Temp. ( F):

HVAC Contractor/

Technician--Name

Hired YMGI-Recommended

HVAC Contractor/Technician?

List for Installating HVAC Technician to Double Check Installation Quality, and Warranty Processing Purpose (if not filled by technician, or not filled fully, warranty will void)

10) Are the inter-connecting wires and copper lines between indoor and outdoor

units installed/covered/protected by line set covers, or anything else?

14) Did you check the indoor unit for condensate leakage and refrigerant

leakage, before and after connecting them?

28) Do you list the working details in the invoice and leave a copy to the

customer?

19) Did you charge the inter-connection copper pipes and indoor unit with

nitrogen to check for positive leakage (pressures 150-200PSI), before

conducting vacuuming leakage check?

By signing above, I acknowledge the liability and responsibility for any false statement or not telling all the facts, and I authorize YMGI to check the details of the filled above, and make its

decision on warranty. I understand our filing or filling the warranty card/form DOESN'T mean automatic warranty approval, because warranty is approved only to those qualified and successful

installations by qualified HVAC technician. I know the warranty, if approved, is a standard 5-year compressor and 1-year other parts only, without any labor coverage. I agree to and will follow

all the contents contained in the Limited Product Warranty Policy that YMGI, not other entity, stated in public, including but not limited to manuals, web site, email, etc.

Important Note: A copy of the installing HVAC company's invoice to show all their work details, your payment proof, center copy B of this registration card filled after a successful

installation, all three (3) MUST be mailed together to Warranty Dept., YMGI Group, POB 1559, O'Fallon, MO 63366, for warranty processing. Customer keeps bottom copy C. YMGI

will check against copy A that was kept at YMGI.

Is the outdoor unit anchored to

ground or secured onto wall

bracket?

WARRANTY POLICIES

AND REGISTRATION

CARD/FORM

BRIEF UNIT INFO

P7 OF 44 P8 OF 44

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

Apartments Office Buildings Homes

Ceiling Mount Cassette Systems are designed for high performance, easy installation and service. Each system

consists of one or several indoor units and one outdoor unit, which are connected by one set or several sets of

interconnection refrigerant pipes and electric wires.

As shown in the following sample picture, air is drawn through the center grilles/filters and then discharged at 4

vents in 4/8 directions. In cooling mode, air passing through coil is cooled; in heating mode, air passing through

coil is heated.

INTRODUCTION

Sample Split System-Indoor and Outdoor Units

(For Continuous Engineering Improvement and Various Marketing Needs and Actual Part Availability

Reason, Unit Appearance Subject to Change or Update Continuously without Prior Notice)

The electrical and thermal power for the whole system comes from the outdoor unit. In YMGI SHCR or TTWC

series of side discharge outdoor condensing unit(s), electrical and thermal components such as compressors and

motors and heat exchange coils and others, are incorporated into the cabinet in an optimized order. These

condensing units can be either hung on the wall or installed on the ground. Once stacking or bracket kit is used,

some outdoor units can be stacked 2 or 3 units high, upon unit size and applications. Air is discharged

horizontally, quietly and smoothly. These units are a perfect fit in locations where installation and applications of

general up-flow condensing units are limited, such as apartments, condos, lofts, multi-families and high-rise

buildings and others.

Indoor unit(s) delivers the thermal and acoustical comfort to the rooms. In cooling mode, air passing through coil

is cooled; in heating mode, air passing through coil is heated. Air is filtered or treated by the built-in mechanism

(washable or enzyme equipped or electrostatic powered filter, varies from model to model), before being

delivered into the room, with more than enough comfort and care, at a wide angle (swing or not, varies from

model to model).

Application Samples-Ceiling Mount Cassette

NOTES:

Since ductless system is not designed to incorporate or use with ducted return or discharge tunnels, one single-

zone unit SHALL NOT be used to take care of the cooling or heating load of more than one-story room. Several

single-zone ductless systems or multiple-zone ductless systems shall be used in this regard.

These units are designed for applications at:

* Residential * Light commercial

* Commercial * Institutional

* Industrial * Hospital

These units are designed for general T-1 weather conditions as outlined in the following table:

Outdoor unit

Air in

Air Out

Air in

Indoor unit

WARRANTY AND TECH. SUPPORT

YMGI warrants to the purchaser/owner(s) that YMGI products be free from defects in

workmanship under the normal use and maintenance, with the standard Limited Product Warranty

Policies that comes with the unit or sales package.

material and

YMGI IS NOT RESPONSIBLE FOR

CONTACT FOR FIELD SERVICE OR REPAIR

The following people, in a prioritized sequence, will take care of your request or issue:

1) The original installer; otherwise,

2) Your current service contractor; otherwise,

3) Authorized contractor in YMGI list that is close to you; otherwise,

4) Authorized Distributor in YMGI Distributor list; otherwise,

5) Contractor/Distributor you prefer who is close to you.

CONTACT FOR GENERAL TECHNICAL QUESTIONS OR SUPPORT, IN A SEQUENCE:

1) The original installer; otherwise,

2) The current service contractor; otherwise,

3) The distributor; where the unit is purchased from otherwise,

4) YMGI Technical Support:

Tel: (866) 833-3138*703 Email: [email protected]

* Regular equipment maintenance or field service or field inspection.

* Damage or repairs required as a consequence Customer do-it-yoursely(DIY) installation and/or any other faulty

installation or improper application.

* Failure to start due to voltage conditions, blown fuses, open circuit breakers, or other damages due to the

inadequacy or interruption of electrical service.

* Damage or repairs needed as a consequence of any misapplication, abuse, improper servicing, unauthorized

alteration, or improper operation.

* Damage as a result of floods, winds, fires, lightening, accidents, corrosive atmosphere, or other conditions

beyond the control of YMGI.

* Parts not supplied or designated by YMGI.

* Products installed outside USA or Canada.

* Any damages to person or property of whatever kind, direct or indirect, special or consequential, whether

resulting from use or loss of use of the product.

The original licensed installer or current service contractor should be contacted first of all, since they installed

the unit and/or know more details than anybody else.

They will check the unit and find out the problems with the professional knowledge about HVAC and electric

product installation by using special tools or instrument.

They can contact YMGI technical support for technical help during unit installation or inspection.

Product model and serial numbers needed, which can be found on unit nameplate sticker, so that our

technician can quickly identify the unit, parts and wiring diagrams, among our many products and models.

* Any problems due to improper cooling and heating load calcuation of the room/building the air conditioner/heat

pump system is to be installed. Equipment users can get the calculation schedule from your room/building

architect or your installation or related service HVAC contractor, who should have the knowledge and the tools

to do these calculations correctly.

* Any problems due to improper sizing and selecting air conditioner/heat pump system. These equipment sizing

and selection work should be conducted by either your room/building architect or your installation or related

service HVAC contractor, who should have the knowledge and the tools to do these calculations correctly, and

get your approval, before purchasing the air conditioner or heat pump equipment.

* Any problems due to improper installing of the air conditioner/heat pump system. Installation should be

conducted by currently licensed HVAC technician, following manufacturer installation instructions, all governing

safety codes, with care and professionalism.

* Any problems due to improper operation of the air conditioner/heat pump system. Users shall keep the manual

and refer to it for the correct understanding of how the unit will work and how to operate the unit correctly.

* Any problems due to improper maintenance of the air conditioner/heat pump system. Like a car, regular

maintenance or yearly checking is necessary for the unit to work properly for you, before the season comes. For

example, air filter shall be checked for cleaness from time to time. Remote control batteries shall be checked for

enough power, before judging the unit is not working...

BRIEF UNIT INFO

P9 OF 44 P10 OF 44

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

UNIT SPECIFICATIONS

Items

Power Supply

Cooling Capacity (Btu/h)

Heating Capacity (Btu/h)

SEER

HSPF

Duhumidifying Capacity

Air Flow (CFM)

Air-throw (Ft.)

External Static Pressure

Sound Level

Fan Motor

Fan Wheel

Swing/Step Motor

Input Power of Ele. Heater

Electrical Protection Fuse

Evaporator Coil

Copper Line Connections

Drain Hose Connection

Condensate Pump

Refrigerant Environmental Friendly

Filter

Clean Coil Surface

Pre-heating Function

Memory of Previous Set-ups

Auto-Restart Function

Unit Dimensions

Unit Weight

Face Panel Dimensions

Face Panel Weight

Loading Capacity

Unit / Conditions

Voltage/Ph/Hz

Allowed Voltage Range

High/Standard/Low

ID 70/60, OD 47/43F

ID 70/60, OD 17/15F

ID 70/60, OD 17/5F

Btu/h.W

Pints/Hr.

High/Medium/Low

Horizontal Installation

Water In.

Pressure dB(A) (H/M/L)

Power dB(A) (H/M/L)

Model

Shaft

Speed (RMP, H/M/L)

Output (W)

Input (W)

Capacitor (uF)

Type-Piece

Diameter x Height (In.)

Model

Piece

Output (W)

Type-W

PCB / Transformer

Type

Color

Sealed by Dry Nitrogen

Flare/Nut-Liuqid + Gas

OD (In.)

Installed-Lift (In.)

R410A

Type-Feature

Size WxH (In.) - Qty.

Anti-Mildew Function

Anti-Cold Blowing

Power is Lost/Resumed

If Power is Resumed

Net L x W x H (In.)

Package L x W x H (In.)

Net (LBs)

Packaged (LBs)

Net L x W x H (In.)

Package L x W x H (In.)

Net (LBs)

Packaged (LBs)

20'/40'/40'HQ

WMMS-12EC-V2B(59)2

208-230/1/60

187-253V

13900/12000/5200

13000

11600

9000

8.2

2.96

353/312/245

25-18 Upon Mounting Height/Speed/Temp.

39/37/35

49/47/45

FN11T-2

Single

700/600/515

Centrifugal-1

11.1 x 5.8

MP35CB

T3.15A 250V / 0.2A

Alu. Fin/Inner Grooved Copper Tube

Blue

Yes

1/4" + 3/8"

1.22

Yes-25

Yes

Standard-Washable

13.56 x 13.13 - 1

Yes

22.4 x 22.4 x 9.1

33.4 x 28.7 x 12.2

39.7

50.7

25.6 x 25.6 x 2

28.7 x 26.4 x 4

5.5

8.1

102/209/246

WMMS-18EC-V2B(59)2

208-230/1/60

187-253V

20800/17200/6200

18100

16200

13100

8.2

3.8

353/312/245

39/37/35

49/47/45

FN11T-2

Single

700/600/515

Centrifugal-1

11.1 x 5.8

MP35CB

Blue

Yes

1/4" + 1/2"

1.22

Yes-25

Yes

Standard-Washable

13.56 x 13.13 - 1

Yes

22.4 x 22.4 x 9.1

33.4 x 28.7 x 12.2

39.7

50.7

25.6 x 25.6 x 2

28.7 x 26.4 x 4

5.5

8.1

102/209/246

WMMS-24EC-V2B(59)2

208-230/1/60

187-253V

26500/22800/9600

27400

23800

20600

8.2

5.28

694/522/366

45/43/41

55/53/51

FN35B-1

Single

570/520/280

165

Centrifugal-1

17.7 x 4.4

MP35CB

Blue

Yes

1/4" + 5/8"

1.22

Yes-25

Yes

Standard-Washable

21.38 x 21.34 - 1

Yes

33.1 x 33.1 x 9.4

37.8 x 37.8 x 12.2

37.4 x 37.4 x 2.4

40.9 x 40.4 x 4.5

72/72/144

NAMES OF PARTS

Wireless remote control

Air outlet Built-in filter Air intake grille

Guide louver Drain hose

Refrigerant pipe &

connection electric wire

Note: Specifications are subject to change without prior notice.

INLTS STRT

COUP COUP-H OFST

ELBF9

ELBF4

SOFT

TEE ENDF RDER

Not to damage line sets.

LINESET COVERS

INSTALLER'S

INSTRUCTION

INSTALLER'S

INSTRUCTION

P12 OF 44P11 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

INSTALLATION NOTES

Location Noise

* The air conditioner must be firmly installed and 3~

4 liability checks must be done every year.

* Avoid place within easy reach of young children.

* Avoid other heat sources or direct sun light.

* Install indoor unit away from TV set or radio.

* Avoid where flammable gas is likely to leak.

* At salty coastal areas or special areas such as the

vicinity of a sulphurous hot spring, please contact

dealer before installation to make sure it is safe to

use the unit.

* Not to be installed in laundries.

* The air conditioner must be positioned so that the

plug is accessible.

* Select a place with good ventilation or it may

affect performance or increase noise.

* Install the air conditioner on a foundation that can

withstand its weight. Insufficient strength may

result in the fall of equipment and cause injury.

* Never place objects near the air outlet or the unit,

it may affect performance or increase noise.

* If there is abnormal noise during the operating,

contact dealer immediately.

Installation and transportation Wiring arrangement

* Installation and transportation of the unit must be

done by skilled personnel.

* Be sure to use only the specified accessories and

parts for installation, failure to use may lead to

electric shock, leakage or fire.

* Carry out installation with consideration of strong

winds, typhoons, or earthquakes. Improper

installation work may result in accidents due to

fall of equipment.

* If the unit is to be moved to other place, please

consult dealer first.

* Make sure wiring is carried out by qualified

personnel according to laws and regulations and

this manual, using a separate circuit and suitable

fuse.

* Be sure to install an earth leakage breaker.

* Diameter of power supply cord must be big

enough. (Refer to P24 about the sizes of diameter)

* If the supply cord is damaged, it must be replaced

by the manufacturer or its service agent or a

similarly qualified person in order to avoid a hazard.

* The appliance shall be installed in accordance with

relative wiring regulations.

2) Please do not cut or change the method of use of the yellow / green grounding

wire of the air-conditioner. Otherwise, it may cause the electrical leakage.

3) Grounding resistance should be approved by Country Standard GB17790.

Water supply Gas supply

Sewage tube Some places there are not reliable by a professional.

Grounding Requirement

Water pipe

Some parts of the water pipe are made of plastic

materials and not suitable for grounding.

Gas pipe

If there is electrical leakage accidently from air

conditioner, it can be a fire or explosion risk.

1) Air conditioner is a class I appliance. Must use a suitable grounding connection.

4) User power should provide a reliable grounding terminal. Please do not let the

grounding wire connect to the following places.

* Select a unit placement that will not disturb

neighbors with hot air or noise.

1) Mounting Indoor & Outdoor

Units and Running

Piping/Wiring

Ruler (Not Shown)

Stud-Finder

Dry-Wall Saw

Electric Drill

3" Hole Saw

Drill Extension

Hammer Drill and Bit (Not Shown)

Measuring Tape

Level

Flash Light

Screw Driver (Phillps and Flat)

Hammer

Knife

Scissors

Goggled Glass

Mask

Gloves

Ladder

2) Refrigeration Related Work

3) Electrical Related Installation

Flat Surface Wrench (Two)

Flare-Nut Tool Set (Not Shown)

Hex Head Key Set

Torch for AC Application (Not Shown)

Heat Absorbtion Flux

Nitrogen (Not Shown)

Soap Bubble (Not Shown)

Vacuum Pump

Helium Leakage Check (Not Shown)

Manifold

Wire Cutter

Wire Stripper

Sharp Plier

Cable Ties

Black Tape for Electrical Use

Electrical Meter

Clamp Meter (Not Shown)

Manifold

Infra Thermometer (Not Shown)

4) Trial Running Units and

Inspection

RECOMMENDED TOOLS FOR INSTALLATION

INSTALLER'S

INSTRUCTION

INSTALLER'S

INSTRUCTION

P14 OF 44P13 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

INDOOR UNIT INSTALLATION

LOCATION

1) Do not place object near the air outlet so that conditioned air can reach the whole room.

2) Be sure to install the indoor unit firmly and horizontly.

3) Select a place that can support 4 times the weight of the indoor unit and will not increase noise and vibration.

4) Select a place easy to drain water and connect with the outdoor unit.

5) Make sure there is enough space for maintenance and make sure the distance between the unit and ground

is 1.8m or more.

6) Make sure the suspension bolt pitch can hold 4 times the , otherwise, you should

strengthen the suspension bolt pitch.

weight of the indoor unit

Note:

1. Keep enough distance from the kitchen.

2. The appliance shall not installed in the laundary.

CEILING OPENING AND SUSPENSION BOLT (M10) PITCH DEMENSION

HANGING PREPARATIONS

Firmly fasten the hanging bolts as shown in Fig.4 or by another method.

Fig.4 Fig.5

Keep clearance

12Ft. or more

Exhaust of large capacity

Heat

22.5

9.1

25.6

1.97

12EC 18EC 24EC

33.1

9.1

37.4

2.4

22.5

9.1

25.6

1.97

Fig.3 W

a=b

INSTALLATION ACCESSORIES

INSTALLATION CLEARANCE

Note: Unit must be installed by skilled HVAC technician following this manual.

No.

Name

Drainage hose

Clamp

Nylon fastener

Washer

Paper pad for installaition

Screws

Heat preservation Sponge for pipe

Big sealing pad

Sealing pad

Small sealing pad

Sealing bar

PVC tape

Screws

Remote control

Battery

Shape

Power control wire

Quantity

L=200

ST4.8*13-F

5*160*300

5*45*300

3*30*150

120*65*25

ST4.2 9.5PA

AAA 1.5V

Notes

For indoor side pipe joint

For hole

Encase the tie-in

For remote control

Use for Paper pad for

installation

For mounting the remote

control unit

9.84 in

or more

90.55 in

or more

39.37 in

or more

Concrete

Insert

INSTALLER'S

INSTRUCTION

INSTALLER'S

INSTRUCTION

P16 OF 44P15 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

INDOOR UNIT INSTALLATION

BOLTING THE GRILLE ASSEMBLY TO THE BODY

Install the grille assembly to the body

with the four bolts, spring washers, and

washers.

Wireless unit connection wire wiring

(1)

part A detail.

Connect the connector in accordance with the

(2) Then clamp the lead wire with clamp so that it

does not touch the rotating parts.

Part A detail view

INSTALLING/REMOVING THE INTAKE GRILLE

1. Installing the intake grille

(1) Fully insert the intake grille hooks into the

rectangular holes in the panel.

(2) Close the intake grille, then slide the tw grille

stoppers outward.

HANGING PREPARATIONS

(1) Install special nut A, then special nut B onto the

hanging bolt. (Fig.6)

(2) Raise the body and mount its hooks onto the

hanging bolt between the special nuts. (Fig.6)

(3) Turn special nut B to adjust the height of the body.

(Fig.6)

(4) Use a level, or vinyl hose filled with water, to

adjust the unit to level.

Warning

Fig.6

INDOOR UNIT INSTALLATION

INSTALLING DRAIN PIPE

NOTE: Install the drain pipe.

* Install the drain pipe with a downward gradient (1/50 to 1/100) so there are no rises or traps in the pipe.

* Use general hard polyvinyl chloride pipe (VP25) (outside diameter 1-1/4") and connect it with adhesive

(polyvinyl chloride) so that there is no leakage.

* When the pipe is long, install supporters.

* Always heat insulate the indoor side of the drain pipe.

* When desiring a high drain pipe height, raise it up to 15" or less from the ceiling within a range of 6" from the

body. Arise dimension over this range will cause leakage.

6" or less 60 to 78"

Max 15"

Special nut A

Hook

1.18"

or more

Ceiling19/32"

Special nut B

After installing the body,

tighten the nuts.

Hanging bolt

Vinyl hose

Tighten the bolts to a secure position

INSTALLER'S

INSTRUCTION

INSTALLER'S

INSTRUCTION

P18 OF 44P17 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

INDOOR UNIT INSTALLATION

Tightening torque table:

Pipe size

Φ6.25 (1/4")

Φ9.52 (3/8")

Tightening torque (N·m)

15~20

30~40

Power supply and wiring requirement

AC 208/230V. If voltage is over, may cause the parts of electric equipment to become damaged. If the voltage

is too low, this may cause the compressor to shake thus causing damage to the cooling system.

2) User power supply should be provided a reliable grounding connect. (see earth requirement)

1) Power frequency of air conditioner should be 60 Hz, voltage:

1) Should have a reliable earth connection (see earth connection requirement)

2) Screw of wire should be tight, damaged screw should be changed. ( Self tapping screws cannot be used on

an electrical connection.)

3) The provided wire should be used. Please do not change the wire, length and end of it. If you need to adjust,

please contact the local service center.

4) Please do not connect the plug with the non-plug wire by yourself.

5) Indoor and outdoor electrical connecting wire should not be pulled too tightly or twisted.

Electrical connection requirement

ELECTRICAL WIRING

Φ12.7 (1/2")

Φ15.9 (5/8")

50~55

60~65

Pipe size Tightening torque (N·m)

INDOOR UNIT CONTROL BOX & WIRING TERMINALS

Remove the control box cover and install the connection cord to the wiring terminals. Must match terminal

number for each wire at both indoor unit and outdoor unit wiring terminal.

Note:

* The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper

tube.

* An all-pole disconnection device which has at least 3mm separation distance in all pole and a residual current

device(RCD)with the rating of above 10mA shall be incorporated in the fixed wiring according to the national rule.

CONNECTION OF REFRIGERANT PIPE

* Besure to use both a spanner and torque wrench together as shown in the drawing, connecting or

disconnecting pipes to/from the unit.

* Refer to table 1 to determine the proper tightening torque (over tightening may damage the flare and cause

leaks.)

* When connecting the flare nut, coat the flare both inside and outside with refrigerating machine oil and initially

tighten by hand 3 or 4 turns.

* Check the pipe connector for gas leaks, then insulate it as shown in the drawing below.

* Use sealing pad (11) to wrap joint between gas pipe and the insulation(8).

* The enclosure of the appliance shall be marked by word, or by symbols, with the direction of the fluid flow.

INDOOR UNIT INSTALLATION

Caution:

(1)

is not on. If moved by hand, it may be damaged.

(2) The grille assembly is directional relative to the

air conditioner body.

(3) Install so that there is no gap between the grille

assembly and the air conditioner body.

The louver angle cannot be changed if the power

(3) Open the intake grille so that it is at an angle of

o o

20 to 40 ,and then remove the grille.

(2) Remove the grille hook screws, and then open

the intake grille.

2.Removing the intake grille

(1) Slide the two grille stoppers inward, and then

open the intake grill.

FINISHED INSTALLATION ABOVE CEILING

Mounting-Threaded Rod Hung on Rafters

Mounting-Threaded Rod Hung on Truss

Control bo x cov er

INSTALLER'S

INSTRUCTION

INSTALLER'S

INSTRUCTION

P20 OF 44P19 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

HOW TO CONNECT WIRING TO THE TERMINALS

A. For solid core wiring (or F-cable)

(1) Cut the wire end with wire cutters, then strip the insulation about 15/16" (25mm) to expose the solid wire.

(2) Using a screwdriver, remove the terminal screw (s) on the terminal board.

(3) Using a sharp plier, bend the solid wire to form a loop suitable for the terminal screw.

(4) Shape the loop wire properly, place it between the terminal board, and tighten the terminal screw to hold the

exposed solid wire loop securely.

B. For strand wiring

(1) Cut the wire end with a wire cutter, then strip

the insulation to about 3/8" (10mm) to

expose the solid wire.

(2) Using a screwdriver, remove the terminal

screw(s) on the terminal board.

(3) Using a round terminal fastener or plier,

securely clamp a round terminal to each

stripped wire end.

(4) Position the round terminal wire, replace

and tighten the terminal screw using a

screwdriver.

C. Attention:

An all-pole disconnection switch having a

contact separation of at least 3mm in all poles

should be connected in fixed wiring.

WMMS-24EC-V2B(59) 2

WIRING DIAGRAMS

Fuse on PCB

(Condensate water)

WMMS-12EC-V2B(59), WMMS-18EC-V2B(59)

Outdoor

Unit

WMMS-12EC-V2B(59)2, WMMS-18EC-V2B(59)2

WIRING DIAGRAMS

Fuse on PCB

(Condensate water)

Fuse on PCB

INSTALLER'S

INSTRUCTION

INSTALLER'S

INSTRUCTION

SAFETY CAUTIONS

READ THE FOLLOWING CAREFULLY BEFORE OPERATION

WARNING

Avoid direct air flow to your body and avoid

excessive heating or

cooling that may make

you feel uncomfortable

and do harm to your

health.

Check whether the

installed stand is still

firm enough after the unit has

operated for an extended time.

If a worn-out stand is left unfixed,

the unit may fall and damage

property or harm people.

Do not remove protection grill

nets from the outdoor unit.

Do not stand on the outdoor

unit or put anything on it.

Unit may fall causing harm

to self or others.

Do not put hands or insert

anything into the air outlet

vent of the unit.

If there is something

abnormal (eg. burning

smell), cut off the

power immediately and

contact service center.

Do not spray any paint or

pesticide on the unit, or it

may cause fire.

If room air is stuffy, air the

room by opening door

and window for a while,

but close the curtains

when operating the unit

to prevent conditioned

air from leaking.

Never use wrong ampere rating fire.

Use of iron wire or copper wire may

cause the unit to break down or

cause fire.

Do not use other heating

equipment near the air

conditioner.

It will affect the cooling

performance.

Never place objects near the air intake and the air outlet of the unit.

It may affect performance or stop operation of the unit.

Do not splash water directly to

indoor unit It may cause harm

or electric shock.

Do not throw the remote control

and do not press the button of

the remote control with

pointed object, or the remote

control may

be damaged.

Do not check or repair

the unit while it is

operating. It is very

dangerous.

P22 OF 44P21 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

TEST OPERATION

TEST AND CHECK ITEMS AFTER INSTALLATION

1. Prepare for test

(1) Do not turn on the power switch before all installation is finsihed.

(2) Connect wires correctly and firmly.

(3) Open the check valve.

(4) Remove all dust.

2. Testing

(1) Turn on the power switch and press "ON/OFF" button.

(2) Press "MODE" button to select COOL, HEAT, FAN, etc to test whether it

operates normally.

3.Emergency operation

* When the unit is stopped, you can press the "AUTO" button on cover NO II.

then unit is in "AUTO" mode.

The air conditioner selects COOL, HEAT, DRY, FAN modes automatically.

* When operating, press the "AUTO" button, the air conditioner will stop.

Note to the installer:

Be sure to instruct the customer how to operate the system and show him/her the attached operation manual.

For the following items, take special care during construction and check after installation is finished.

NOTE:

The "TEST" button on the cover No II. is specially for testing the air conditioner.

When pressing it, the air conditioner will be forced to operate or stop. Do not press it when air conditioner is in

normal operation.

Items to check

Is the indoor unit fixed firmly?

Is the gas leak test finished?

Is the unit fully insulated?

Does drainage flow smoothly?

Does the power supply voltage correspond to

that shown on the nameplate

Are wiring and piping correct?

Is the unit safely grounded?

Is wiring size according to specifications?

Is something blocking the air outlet or intake

of either the indoor or outdoor units?

Have records of refrigerant piping length and

additional refrigerant charge been made?

If not properly done, what is likely to happen

The unit may drop, vibrate or make noise.

It may result in insufficient cooling.

Condensate water may drip.

The unit may malfunction or the components

burnout.

The unit may malfunction or the components

burnout.

Risk of electric leakage.

The unit may malfunction or the components

burnout.

It may result insufficient cooling.

Volume of refrigerant charge in the system is

not clear.

Check

When the unit is stopped, you can press the "AUTO" button on the cover NO

II, then the unit is in AUTO mode.

UNIT OPERATION

P24 OF 44P23 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

"LIGHT" BUTTON: This allows you to turn the indoor

unit display light on and off. If the light emitted by the

display is bothersome simply press the LIGHT button

on the remote and the display will turn off. To turn the

display back on simply press the light button once

more.

"FAN" BUTTON: By pressing this button you can

select from fan speeds AUTO→Low→Middle→High.

When the unit is first powered on the default fan

speed setting is AUTO. When running the unit in

DRY mode the fan speed will only run in low speed.

"CLOCK" BUTTON: The time function runs on a 24

hour clock. To set the time press the clock button

once. You will see a flashing clock appear on the

remote. Press the "+" button to increase the time;

press the "-" button to decrease the time until the

desired time is set. Press the clock button once more

to set the time. You will notice then, the clock symbol

is not flashing.

Note: Under the Dry mode, the fan speed isn't

adjustable, low fan speed is imperative.

High fanHigh fanHigh fan

AUTO

"BLOW" BUTTON: When the blow function is on a symbol on the remote will appear next to left hand corner of

the temp. This feature when turned on, will allow the indoor fan to continue to blow even when the unit is turned

off by the remote. This will aid in the quick drying of the indoor coil to help prevent any kind of mold build up due

to moisture. To turn this feature off simply press the BLOW button once more till you notice the blow icon

disappear from the remote display.

"TURBO" BUTTON: When you press this button you will see a symbol of a fan appear on the remote. In either

heat or cooling mode when this button is pushed the compressor and or fan will blow at a higher speed to

achieve set temp quicker. When the indoor unit senses that the set temp is being approached the fan speed will

slow down. To turn this function off simply press the TURBO button until the fan symbol is no longer displayed on

the remote.

"+" Button: By pressing this button the set temp will increase. If this button is pushed without releasing for over

2 seconds the temperature will increase more rapidly. In AUTO mode the temperature cannot be changed. The

O O

temperature range for this remote is 61 F to 86 F.

"-" Button: By pressing this button the set temp will decrease. If this button is pushed without releasing for over

2 seconds the temperature will decrease more rapidly. In AUTO mode the temperature cannot be changed. The

O O

temperature range for this remote is 61 F to 86 F.

"TEMP" Button: When the unit is first turned on the remote will display the last set temp. When the TEMP button

is pushed twice the indoor unit will display the room temp for approximately 5 seconds before going back to the

set temp.

TO LOCK THE REMOTE: If you would like to lock the remote from anyone changing the settings simply press

the "+" and the "-" buttons simultaneously. When the remote is locked you will see an icon of a lock appear on the

remote. If while the remote is locked and someone pushes a button on the remote they will see the icon of the

remote flash three times. This indicates the remote is locked. To unlock the remote simply press the "-" and the

"+" once more. You will know the remote is unlocked once the icon of the lock disappears from the remote screen.

O O

SWITCH BETWEEN F AND C : The remote default is Fahrenheit. If you would like to switch between the remote

displaying Fahrenheit and Celsius, press the MODE and the "-" button simultaneously while the unit is turned off.

"TIMER ON" BUTTON: This button allows you to set a time you would like the unit to turn on. The clock is a 24

hour clock. Press the TIMER ON button once and you will see the word ON flashing next to a time displayed.

By pressing either the + or the button choose the time you would like the unit to turn on. Once you have the

desired time displayed on the remote press the TIMER ON button once more and the word ON will stop blinking

and stay on the remote. The time you would like the unit to turn on is now set. To cancel the TIMER ON function,

simply press the TIMER ON button once more and the ON will disappear from the remote screen.

"TIMER OFF" BUTTON: This allows you to set the time that you would like the unit to shut off. Simply follow the

above steps but this time press the TIMER OFF button instead of the TIMER ON button. When the word OFF is

on the remote screen, the time you would like the unit to turn off is now set. To cancel the TIMER OFF function

simply press the TIMER OFF button once more and the OFF will disappear from the remote screen.

REMOTE CONTROL-KEY NAMES & FUNCTIONSREMOTE CONTROL-KEY NAMES & FUNCTIONS

LCD

Display

ON/OFF

FAN

CLOCK

BLOW

TURBO

MODE

INCREASE

(Temp.,Time)

TIMER ON

TIMER OFF

LIGHT

SLEEP

TEMP

U-TOUCH NOT USED

NOTE2: Be sure there are no obstructions between the indoor unit and the remote control. Do not drop or allow

any liquids near the remote. Do not place the remote in direct sunlight or any place that can become very hot.

"ON/OFF" BUTTON: Press this button to turn the

unit on. Press once more to turn the unit off. When

turning the unit ON/OFF, the TIMER, and SLEEP

functions will be canceled. The preset time will remain.

"AUTO MODE": While the unit is in AUTO the mode

the temperature cannot be changed. The temperature

while the unit is running in AUTO mode is 77 F. If

while the unit is in AUTO mode and the room

temperature falls below 77 F then the unit will run in

heating mode. If the room temperature rises above

77 F then the unit will run in cooling mode. The unit

will switch between the heating and cooling to

maintain the factory preset temperature of 77 F.

"SLEEP" BUTTON: This function will increase or

decrease the set temp depending on what mode the

unit is running in. When SLEEP mode is turned on in

cooling mode the temp will automatically increase

0.5 to 1.0 degree once every half to one hour for

several times over a period of 2 hours and remain at

that temperature until SLEEP mode is turned off.

When SLEEP mode is turned on in heating mode the

set temp will automatically decrease 0.5 to 1.0

degree once every half to one hour for several times

over a period of 2 hours and remain at that

temperature until SLEEP mode is turned off. This way

when the unit is in SLEEP mode during cooling the

fan will blow at a lower speed to accommodate for the

decreased cooling load due to less activity and a

lower outdoor temp. The same principle of savings is

applied to heat mode.

To activate the sleep mode press the SLEEP button

once. You will see a picture of a moon and stars in

the lower left hand corner. To turn off the SLEEP

mode simply press the button once more and the

moon and stars will disappear from the remote screen.

SWING

DECREASE

(Temp.,Time)

IR Control Signal Transmitting

The COOL mode SLEEP profile is as follows:

Temp.

Ts+2

Ts+1

Ts+1/2

01/2 1 2

Hours since sleep set

1(hr)

SLEEP set offSLEEP set on

The HEAT mode SLEEP profile is as follows:

Temp.

Ts-3

Ts-2

Ts-1

01/2 1 2

Hours since sleep set

1(hr)

SLEEP set offSLEEP set on

1/2 1 2

NOTE1: This is a general use remote control and can be used for numerous air conditioner styles and models.

There may be some buttons on the remote that are not for use with the unit purchased. When these buttons are

pressed you may hear a beep sound emitted from the remote. This will not affect the unit staus.

UNIT OPERATION

P26 OF 44P25 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

SYMBOL DISPLAY

When power is first applied to the unit but the power

has not been turned on by the remote control, then a

red power light only is displayed. When the unit has

been powered on by the remote control then the

running LED is lit and the current running mode

symbol is displayed at the same time.

COOLING: Running symbol and cooling symbol are lit.

HEATING: Running lamp and heating symbol are lit.

DRY: Running lamp and dry lamp are lit

FAN: Running lamp and fan lamp are lit.

AUTO: Auto lamp, running lamp and actual running

mode are lit.

ALPHA NUMERIC DISPLAY

* The setting temperature range for the unit is 61 to

86 F.

* Under AUTO mode unit will display 77 F for cooling

and 68 F for heating modes.

LCD

Display

ON/OFF

FAN

CLOCK

BLOW

TURBO

MODE

INCREASE

(Temp.,Time)

TIMER ON

TIMER OFF

LIGHT

SLEEP

TEMP

U-TOUCH NOT USED

SWING

DECREASE

(Temp.,Time)

IR Control Signal Transmitting

CHANGING BATTERIES AND NOTICES

1) Press slightly along the arrowhead direction to push the back cover open on remote control.

2) Take out the old batteries. (As show in figure)

3) Insert two new AAA1.5V dry batteries, and pay attention to the polarity. (As show in figure)

4) Attach the back cover of wireless remote control. (As show in figure)

NOTE:

When changing the batteries, do not use the old or

different batteries, otherwise, it can cause the

malfunction of the wireless remote control.

The operation should be in its receiving range.

It should be placed at where is 1m away from the TV set or stereo sound sets.

If the wireless remote control can not operate normally, please take them out, after 30s later and reinsert, if they

cannot normally run, please change them.

If the wireless remote control will not be used for and

extended period of time, it is recommended to leave

the batteries out as this could cause leakage from the

batteries. This will damage the remote control.

Sketch map for

changing batteries

REMOTE CONTROL-KEY NAMES & FUNCTIONS

Once the U-TOUCH stars appear, the remote will send a signal of the remote-local temperature to the indoor unit,

and this remote-local temperature will supersede the return air temperature as the unit's target temperature.

Every 10 minutes such signal will be sent from the remote to the indoor unit updating the remote-local

temperature. If at any time during this process no signal is received by the indoor unit from the remote, the unit

will switch back to the previously set temperature before the U-TOUCH feature is activated. To turn the U-

TOUCH feature off, simply press the U-TOUCH button until you see the symbol disappear from the remote

screen. By doing so, the return air temperature will take the place of remote-local temperature as the unit's target

temperature. U-TOUCH is what YOU WANT. U-TOUCH feature brings to you a true comfort level wherever and

whenever you want.

"SWING" BUTTON: Hold the swing button (symbol

shown above) for more than 2 seconds and the

indoor air louver will start to swing between the

highest and lowest limits. Once the swing button is

released the louver will stay in the last position where

the button was released.

If the swing button is pushed just once the swing icon

will appear on the remote and the louver will swing

up and down continuously between the highest and

lowest points. Push the swing button once more and

the icon will disappear on the remote and the louver

will remain at the last point the button was pushed.

When the unit is powered off by the remote the louver

will close on the indoor unit.

Press this button to set up the desired swing angle

which circularly changes as below. (Insert swing

picture)

"U-TOUCH" BUTTON: Since the indoor unit is normally mounted high up on the wall or attached to the ceiling, the

temperature at where the return air sensor is installed inside the indoor unit is higher than what it is where the

area people stand and can feel (4 to 7 feet above the floor). If the unit uses the return air temperature as its

target control, people may feel colder than what they really want (target) in both cooling mode and heating mode.

The facts of air stratification and warm air rising and cold air dropping requires users to set up, by experiments or

experience, the target temperature quite a few degrees higher than what you really want , in order to reach a

satisfied or more precise indoor comfort. This is a common drawback of AC/HP units made by other manufacturers.

With YMGI's U-touch feature, this can be avoided and your comfort level can be improved.

When you press the U-TOUCH button on the remote control, the unit will use the temperature where the remote

is located as its target temperature control. Once you do so, you will notice a figure of a person surrounded by

stars appear on the remote.

"SWING UP AND DOWN" BUTTON

Press this button, to set up swing angle,

circularly changes as below:

which

This is an universal use remote control. If remote

control sends the following three kinds of status

that the swing status of main unit will be:

When the guide louver starts to swing up and down,

if the swing is turned off, the air guide louver will stop

at the current position.

which indicates the guide louver swings up and

down between that all five positions.

Warmer

Colder

Warm air rises

Cold air drops

T+△

Temp sensor

Wall mount indoor unit

"U-Touch" Feature Is Activated:

"U-Touch" Feature Is NOT Activated:

Roof

Floor

Signal (communication)

Remete control

(Temp sensor)

Roof

Floor

(Feel More

Comfortable)

(May Feel Colder than

You Want in Summer

and Winter)

REMOTE CONTROL-KEY NAMES & FUNCTIONS

ABOUT BETWEEN INDOOR UNITS

If any two indoor units are controlled to run the following modes, indoor unit will run into mode clash or

conflict. All indoor units will stop to run and show Protection/Error code E7, unless shut-off and then

re-power:

Some on HEAT Mode, while others on COOL Mode and/or DRY(Dehumidify) Mode and/or FAN Mode.

NOTE:

COOL mode is compatible with DRY and FAN mode. In other words, there will be no problem for some

indoor units to run COOL, while others may run either one or few of modes COOL, DRY (Dehumidifying)

and FAN. No Protection/Error code will show up.

MODE CLASH/CONFLICT

UNIT MAINTENANCE &

SERVICE GUIDE

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Notice

1) Preparation before service

Step 1: Firstly, confirm the model of the inverter A/C which needs repairing, and then find out model of main

parts that can be damaged easily and the material encode, especially the controller of outdoor unit;

Step 2: Based on the malfunction reflected by user, determine the parts that will need to be replaced, and bring

tools with you for maintenance.

Step 3: As for repairing the inverter A/C, you should not only bring the common tools, such as screwdriver,

wrench, etc, but also you should bring universal meter and ammeter with you.

2) During the maintenance, don't touch any terminals before the voltage between P and N of power module is

measured less than 50V to avoid electric shock.

3) Before or after the maintenance, you should check whether the users power socket, terminal block on indoor/

outdoor unit and all connectors on main board (especially the main board of outdoor unit, power module and

PFC module) are loosened or not.

GENERAL PROCEDURES

TROUBLE SHOOTING

OPTIMUM OPERATION

Adjust the room temperature properly

Adjust the room temperature properly for a

comfortable environment.

Never place anything under the indoor unit that is to be kept dry

Turn off the main power supply swittch when it is not to be used for long periods of time

Do not open the doors and windows for a long time when air conditioner is operating

Place TV, radio, stereo, etc. at least 1m away from the indoor unit and the remote control

Avoid direct air flow to pets and plants

Water may drop from the indoor unit when the

humidity is over 80% or when the drainage outlet

is clogged.

When the main power switch is truned on, some

watts of electricity is being used even if the

system is not operating.

Turn off the main power supply switch to save

energy.

Cooling and heating performance will be affected

if the doors and windows are open for an extended

period of time.

It may cause interference in the picture or sound.

It may do harm to them.

UNIT MAINTENANCE &

SERVICE GUIDE

UNIT MAINTENANCE &

SERVICE GUIDE

UNIT MAINTENANCE &

SERVICE GUIDE

P30 OF 44P29 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

TROUBLE SHOOTING

Dust from the units

Discharged air smells

Starting operation after not using for a

longtime

During operation

Dust entered into the unit and blown

out at re-starting. Clean filter and coil

This is caused by the odors in the room

which have been left or kept on the

filter or coil, clean the filter and coil

This is caused by the panel expanding

or contracting due to temperature

change in some structural parts

Cracking noise can be heard during or

after operation

The unit does not

operate when

Mist is emitted

Outdoor unit is hot

Noise

Restart right after stopping

Press SET TEMP. and then release

immediately.

Power is switched on

When cooling

After the unit is stopped

Buzz is heard at starting

Sound of hiss like running water can

be heard during operation

A "shuh" sound which is heard at the

start or immediately after the stop of

operation or which is heard at the

start or immediately after the stop of

defrosting operation

A continuous low "shah" sound is

heard when the system is in cooling

operation or at a stop

Once the unit is stopped, it stays idle

for about 3 minutes to protect the

compressor and the unit from any

potential damage

Wait for 1 minute

Room air is chilled rapidly and

becomes foggy

Compressor is emitting heat to get

ready for restarting

It's the starting sound of thermostat

and will turn low after 1 minute

This is caused by the refrigerant

flowing inside the unit

This is the noise of refrigerant caused

by flow stop and flow change

The noise is heard when the drainage

pump is in operation

No need to do anything

NORMAL OCCURRENCE

When normal

occurrence happens

Normal Occurrence Cause and remedy of normal

occurrence

TROUBLE SHOOTING

Warning

* In case of something abnormal (such as bad smell), shut off the power switch immediately and contact service

center.

* Do not repair the unit by yourself. Incorrect service may cause fire, please contact service center.

* The appliance should not be used by children without supervision.

Check these items shown below before contacting service center

Note: If trouble still exists after checking the above items, please contact service center.

Power off or fuse broken

Power off

Loose plug

Batteries for remote installed incorrectly

Out of the remote controlling range

Object at the air intake and air outlet of

the air conditioner

Object at the air intake and air outlet of

indoor and out door units

Wrong temperature setting

Low fan speed

Air direction is not correct

Doors or windows are open

Direct sunshine

Too many people in the room

Too many heating sources

Dirty air filter

The system does not

operate at all

The system stops right

after it is started

Cooling and heating is

abnormal

Change fuse or replace fuse

It will restart when power is on

Put the plug into place

Keep distance in 8m or less

Remove them

Refer to REMOTE CONTROL-

KEY NAMES AND FUNCTIONS

Close them

Clean it

Phenomenon Cause Corrective Measures

Faulty Batteries / Install

batteries properly

Close the curtain or blind.

Refer to REMOTE CONTROL-

KEY NAMES AND FUNCTIONS

Refer to REMOTE CONTROL-

KEY NAMES AND FUNCTIONS

UNIT MAINTENANCE &

SERVICE GUIDE

UNIT MAINTENANCE &

SERVICE GUIDE

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TROUBLE SHOOTING

When the unit is controlled by wire controller, error or protection codes are as follows:

Compressor high pressure protection unit stop

Indoor unit anti-freezing protection

Low-pressure protection unit stop

Air exhaust protection unit stop

Over current protection unit stop

Communication malfunction unit stop

Unit modes conflict

Jumper malfunction

Defrosting /Heating oil return

Compressor overload protection unit stop

System Unit malfunction

IPM modular protection unit stop

PFC protection unit stop

Compressor malfunction

Water spill protection

Indoor ambient temp. sensor malfunction

Indoor pipe temp. sensor malfunction

Outdoor ambient temp. sensor malfunction

Outdoor pipe temp. sensor malfunction

Outdoor air exhaust temp. sensor malfunction

E2 PROM Error

Wire control ambient temp. sensor malfunction

Defrost

Code indication

on display

Meaning

NO.

TROUBLE SHOOTING

ERROR OR PROTECTION CODE INDICATION

NO. Error or protection codes LED (red) LED (yellow) LED (green)

1Compressor high pressure protection unit stop Blink once

2Indoor unit anti-freezing protection Twice times

3Low-pressure protection unit stop Three times

4Air exhaust protection unit stop Four times

5Over current protection unit stop Five times

6Communication malfunction unit stop Six times

7Unit modes conflict Seven times

8Jumper malfunction Fifteen times

9Defrosting/Heating oil return Blink once

10 Compressor overload protection unit stop Three times

11 System Unit malfunction

12 IPM modular protection unit stop

13 PFC protection unit stop

14 Compressor malfunction

15 Water spill protection

16 Indoor ambient temp. sensor malfunction

17 Indoor pipe temp. sensor malfunction

18 Outdoor ambient temp. sensor malfunction

19 Outdoor pipe temp. sensor malfunction

20 Outdoor air exhaust temp. sensor malfunction

21 E2 PROM Error Eleven times

22 Wire control ambient temp. sensor malfunction Blink once

Four times

Five times

Six times

Seven times

Eight times

Blink once

Twice times

Three times

Four times

Five times

LED Indication

UNIT MAINTENANCE &

SERVICE GUIDE

UNIT MAINTENANCE &

SERVICE GUIDE

P34 OF 44P33 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

TROUBLESHOOTING

When there's malfunction or protection, the display screen of indoor unit or LED will display corresponding code

and LED on main board of outdoor unit will also have warnings. Please refer to the function parts as before for

details. When protection or malfunction has been eliminated, the display will resume normal status.

Analysis or disposal for some display malfunction

Notice:

1) For cassette type, floor standing type indoor unit, wire controller is optional. If the unit hasn't been equipped

with the wire controller, there's no display malfunction for wire controller.

2) Cassette type unit only has 3 indicators, no dual 8 display.

3) Only the cassette type is with the error protection of water overflow. Floor ceiling type and duct type indoor

fans are not built with the error protection.

TROUBLE SHOOTING

Clauses and

troubleshooting

The jumper cap is missed

or bad on main board of

indoor unit.

Please check or replace

the correct jumper or the

main board of indoor unit.

Wire

controller

Dual 8

nixietube

Wire

controller

display

method

for duct type

unit

Dual 8 for

floor

ceiling unit

Green light

(cooling LED)

Yellow light

(heating LED)

Red light

(running LED)

Malfunction name

Indicator

There's connecting

problem at WATER-D on

main board or the water

overflow switch is bad

device, please check or

replace it.

The temperature sensor

at ROOM on indoor main

board has malfunction,

please check or replace

it.

The temperature sensor

at TUBE or TUBE-I or

TUBE-O on indoor main

board has malfunction,

please check or replace

it.

Replace the wire

controller.

E3C5

H8H8

Blink 8 times

F0F1

Blink once

F1F2Blink twice

Display the malfunction of indoor ambient temperature

sensor when using this temperature sensor.

(Green light: blink once)

Blink 15 times

Malfunction of jumper cap

Water overflow protection

Indoor ambient

temperature sensor is

open circuit or short

circuit

Indoor evaporator

temperature sensor is

open circuit or short

circuit

Malfunction of ambient

temperature sensor on

wire controller

TROUBLE SHOOTING

ERROR CODE LIST

Malfunction name

Red light

(running

LED)

Yellow light

(heating

LED)

Green light

(cooling

LED)

Floor

ceiling

dual 8

Display of

wire

controller

Display of wire

controller for

duct type unit

No.

High pressure protection of system

Antifreezing

Low pressure protection of system

Discharge protection

Low voltage overcurrent protection

Communication malfunction

Mode shock

Malfunction of jumper cap

Defrosting/heating oil return

Overload protection of comrpessor

System is abnormal

Module protection

PFC protection

Out-of-step malfunction of compressor

including erase malfunction

Water overflow protection

Indoor ambient temperature sensor is

open circuit or short circuit

Indoor evaporator temperature sensor is

open circuit or short circuit

Outdoor ambient temperature sensor is

open circuit or short circuit

Outdoor condenser temperature sensor

is open circuit or short circuit

Discharge temperature sensor is open

circuit or short circuit

The reserved outdoor unit displays E2

Malfunction of ambient temperature

sensor on wire controller

Blink once

Blink twice

Blink 3 times

Blink 4 times

Blink 5 times

Blink 6 times

Blink 7 times

Blink 15 times

Blink once

Blink 3 times

Blink 4 times

Blink 5 times

Blink 6 times

Blink 7 times

Blink 8 times

Blink once

Blink twice

Blink 3 times

Blink 4 times

Blink 5 times

Blink 11times

Blink 5 times

Display the malfunction of indoor ambient temperature sensor

when using this temperature sensor (Green light: blink once)

Yes

E1 E1

E2 E2

E3 E3

E4 E4

Defrost

UNIT MAINTENANCE &

SERVICE GUIDE

UNIT MAINTENANCE &

SERVICE GUIDE

P36 OF 44P35 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

How to Clean the Air intake

1) Open the air intake grille.

2) Remove the air filters.

3) Open the grille at a 45 Degree angle and then lift,

it up to take away.

See step 1 of "How to Clean the Air Filter"

See step 2 of "How to Clean the Air Filter"

4) Wash with water.

When the air intake grille is very dirty, use soft

brush and neutral detergent. Shake off water

and air dry in a shady place.

Attention: Do not wash with hot water.

5) Replace the grille

6) Replace the air filter.

7) Close the suction grille

Refer to step 3.

See step 4 of "How to Clean the Air Filter"

Refer to step 1.

Before Starting the Unit for the First Time in the Season

1) Check to make sure no objects obstructing the in

take and outlets on both the indoor and outdoor

units.

2) Check to make sure ground wire is connected

and that it is not damaged.

3) Check to make sure air filter has been cleaned.

4) Turn on the power 6 hours before starting the air

conditioner.

1) Clean the filter and the body of the unit.

2) Turn off power.

3) Clear dust.

4) If there is any rust deep inside the outdoor unit,

may need to use an extended head cleaning tool.

End of Seaseon Cleaning

CARE AND MAINTENANCECARE AND MAINTENANCE

Pull out the power plug before cleaning Do not splash water directly to the unit

WARNING

Note:

5) Shut the air intake grille. Refer to step 1.

1) Open the air intake grille and use a phillips head

screwdriver to remove the two screws.

Slide both knobs simultaneously towards center

as shown and then pull them downward slowly.

2) Remove the air filters.

Slide knobs on the back of the airintake grille

outward and remove the air filter.

Then remove three air filters on it.

How to Clean the Air Filter

3) Clean the air filter.

If filters are not dirty, you can just vacuum or

wash the air filter with clean water. If the air

filters are very dirty. Use mild detergent and

water. Leave the air filter to dry naturally in a

shady place.

* Do not clean with hot water.

* Do not dry over fire.

* Do not run the air conditioner without the air filter.

* The suction grille must be opened carefully, air

intake.

4) Put back the air filters

* Replace the air filter into its holder.

* Make sure the air filter makes contact with the

filter stopper when it is replaced into its holder.

MUST READ-2

QUESTIONS ABOUT SELF-INSTALLATION VS HIRING LICENSED HVAC

TECHNICIANS

CUSTOMER AND TECHNICIAN MUST READ

1) You understand all that is written hereafter in this and other documents that we publish.

2) You will follow what is written hereafter in this and other documents that we publish.

3) You will be bound by and completely follow all policies, guidelines, instructions, warnings, attentions and other

materials, as published by YMGI Group, its subsidiaries or sister companies, in writing.

4) Only a successful installation, fully (100%) conducted by a qualified HVAC technician(s), as detailed in the

checklist of the Limited Product Warranty Policy and Limited Product Warranty Registration Card/Form,

along with a properly detailed installation invoice, is eligible for the Limited Product Warranty.

5) Failure to follow what is written hereafter may cause various equipment issues that you will take full

responsibility and liability for, including, but not limited to, losing manufacturer's warranty, unit not working

properly, unit malfunctions, under-performance, decreased safety, increased potential of various damages to

your property, body, home and/or business, etc.

6) YMGI documents and policies supersede those made or provided by the sales distributors or installing

contractors. YMGI Group maintains the final authority in explaining and resolving any and all discrepancies

that might exist between distributors/contractors' documents and ours.

YMGI STRONGLY RECOMMENDS:

* Customer hires a currently licensed/ certified HVAC technician(s) (N.A.T.E. or A.C.C.A certification is strongly

recommended) to conduct 100% of the installation, inspection of all unit functions and repair service.

* Customer signs an installation/service contract with the installation/service technician's company who has good

service references and you trust. Installation and service is very important to the life of your investment and

provide you a lifetime of comfort and peace of mind.

* Customer requests the installer to put down a1-year labor warranty coverage in the installation contract.

* Have the technician check against all the items in the checklist of the Limited Product Warranty Registration

Card/Form, sign and date it, to help ensure a proper and professional installation.

* Customer pays in full, only after all the unit functions are inspected, the unit works properly, warranty checklist

is fully filled out and signed and you are fully satisfied.

* If any unit abnormality is found, have your technician check the unit first. Have them call for manufacturer

technical assistance, if necessary, from your job site, not his office, so that we can more accurately assist him

in diagnosing the cause of the malfunction.

Does YMGI allow to do-it-yourself installations (DIY) partially or fully? NO.

Unfortunately no brand or manufacturer can take the responsibility of the equipment if it is not professionally

installed by a currently licensed HVAC technician/ contractor.

If unit is installed by non-licensed people, in part or fully, will the factory warranty be void? YES.

UPON PURCHASING, OPENING PACKING BOXES AND INSTALLATION OF

YMGI UNITS/ACCESSORIES, YOU AND TECHNICIANS YOU HIRE TO

INSTALL THEM ARE ASSUMED TO HAVE READ ALL MATERIALS AND

AGREE TO FOLLOW AND BE BONDED BY ALL WE SAY IN YMGI MANUALS.

11) If all the suggestions have been taken and all the necessary steps are followed.

12) If the contractor(s)/technician(s) are experienced with the systems/brands you purchase.

You might spend less. But remember, many times you get what you pay for.

13) Sign a contract with them. The contract should list all the detailed work they will conduct and the standards

they will follow. Some contractors are willing to include a 1-year installation/service warranty at no extra

charge. Check with them to see if that is available. If available, include that in the contract.

14) Verify and confirm the installation is done completely and all the unit functions have been checked and are

working properly, all the items in the checklist have been checked and marked well in the warranty registration

card/form, prior to paying the contractor in full.

The cost of not having your unit installed properly can be more expensive than spending a little extra money

that hiring the right contractor will cost. Protect your investment and warranty eligibility by doing it right first time.

P38 OF 44P37 OF 44 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

WHY DOES YMGI GROUP REQUIRE INSTALLATION AND SERVICE TO BE

100% PERFORMED BY LICENSED OR CERTIFIED HVAC TECHNICIAN/

CONTRACTOR?

1) They have the training and experience to accurately and safely install and service your equipment.

The equipment runs with high-pressure refrigerant and oil and line-voltage. The copper lines must be installed

properly to prevent leakage and foreign substances from contaminating the refrigerant system.

2) You will save money in the long run. If any problems occur on the unit that is fully installed by the licensed

or certified contractor, they have the training and experience to correct the problem more efficiently. A

technician(s) may be unwilling to repair an issue on a unit that they did not install. If you do find a technician

willing to perform the service, there is an increased possibility of higher service fees than normal, increased

service visits, or delayed service from that technician.

3) It's the law!

The federal, state and/or local government and authorities have various governing laws or regulations,

guidelines, ordinances, etc., requiring only licensed or certified professionals can install and service high

pressure HVAC equipment.

SUGGESTIONS, TO AID YOU IN HIRING AN HVAC CONTRACTOR:

1) Hire a currently, practicing, licensed/ certified HVAC technician/ contractor. Technicians, who are no longer

practicing (retired, etc.) in this field, may not have the updated knowledge or may lack experience on the

equipment you have purchased.

2) Hire a technician/ contractor who services customers in your local area and you are familiar with. Local

contractors have a faster response time and will be easier for you to determine if they are reputable.

3) Use only reputable licensed/ certified HVAC installation contractors/ technicians to prevent any unexpected

charges as a result from unethical business practices.

4) Check their references, to verify they are a good service provider to the general customers. N.A.T.E or A.C.C.A

certified technicians are strongly recommended.

5) Some contractors/ technicians may not feel comfortable about installing the equipment that you purchased for

them to install, and they prefer to purchase and install the equipment. You can contact YMGI directly to check

and see if there have been any contractors in your area who have installed our products or similar.

6) Ask for a detailed quote for the whole installation project. A flat rate quote is the safest contract for both you

and the contractor

7) Your local HVAC technicians may charge you on a project basis or on an hourly basis. To our general

knowledge and experience, a full single head installation may normally cost anywhere from $800 to

$1500. These costs are estimates and your actual costs may differ due to job nature and location.

8) Number of hours can vary depending upon each individual situation, some factors are, but not limited to:

9) How difficult or complex the indoor unit is to be securely installed.

10) How difficult or how long the inter-connecting pipes and wires are to be installed.

CUSTOMER AND TECHNICIAN MUST READ

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