MG WMMS-09K-31A(PX) Owner's manual

This product is designed and manufactured free from defects in material and workmanship for the normal use and
maintenance. Installation, operation, maintenance and service shall follow professional practices for regular cooling and
heating equipment, NEC, State, City or Local Codes and related manuals from YMGI. Otherwise, damage to equipment or
property even injury to people may occur.
Installer: Currently licensed HVAC technician only. Read manual before installation. Fully fill in warranty registration card.
User: Keep this manual for future maintenance and service use.
Servicer: Use this manual for service reference.
Literature Part No: Lit-WMMP-0104-20130917
Subject to Continuous Engineering Change and Product Improvement without Notice.
INSTALLATION, OPERATION & MAINTENANCE
Wall Mounted Mini-Packaged System
09,12K Btu/h
AC or HeatPump (with or without Ele. Heater)
WMMS-09K-31A(PX)
WMMS-09K-32A(PX)
WMMS-12K-31A(PX)
WMMS-12K-32A(PX)
WMMS-09K-31B(PX)
WMMS-09K-34B(PX)
WMMS-12K-31B(PX)
WMMS-12K-34B(PX)
WMMS-09K-31A(P4)
WMMS-09K-32A(P4)
WMMS-12K-31A(P4)
WMMS-12K-32A(P4)
WMMS-09K-31B(P4)
WMMS-09K-34B(P4)
WMMS-12K-31B(P4)
WMMS-12K-34B(P4)
Literature Part No: Lit-WMMP-0104-20130917
YMGI Group, POB 1559
YMGI Group New Energy, POB 1668
O'Fallon, MO 63366, USA
Tel:[phone] Fax:[phone]
Web Site: www.ymgigroup.com
Email: [email protected]
YMGI is the Trademark and Property of YMGI Group New Energy. Copyright of YMGI Group .New Energy
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

MUST READ
CONTENTS
P1 OF 28 P2 OF 28
IMPORTANT NOTES
OPERATION
USER NOTES AND SERVICE LOG
WARRANTYAND TECH. SUPPORT
A PIECE-OF-CAKE WMMS(P)-Quality of Features
A PIECE-OF-CAKE WMMS(P)-Performance Curves (For Reference)
A PIECE-OF-CAKE WMMS(P)-Brief Specifications
ADVANTAGES OVER TRADITIONAL SYSTEMS
UNIT INSTALLATION
DIAGNOSIS CODE & TROUBLE-SHOOTING GUIDELINE
YMGI, Engineered Comfort Products for ASustainable and Efficient Green World !
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MUST READ-ATTENTIONS AND WARNINGS
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 the installation is not performed by licensed HVAC contractor. DIY or partial DIY will
void ALL factory warranties. One example of partial DIYwould 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. YMGI cannot control every application that our unit's are installed in. It is key that each variable is taken into
account in each installation depending your application.
ATTENTIONS
The following points below will cause damage to the unit and key components'. This will cause the end
user to lose their factory warranty. Below are details that may be missed at the time installation but will
eventually over time cause unit failure:
1. Any foreign substances introduced into the system as a result of failure to seal 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 the 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 and waiting about five
minutes. Vacuum must be held for this period of time at 500 micron or better.
6. Not conducting a positive leak check prior to the negative leak check.
7. Not selecting the correct size wire or circuit breaker.
8. Any kinks or improper bending of the copper piping.
9. Any improper flaring or not centering of the flare with the nut, or not tightening the connections.
10. Not trial testing each indoor unit individually.
11. Not reading the provided technical data (temp/time/pressure/current) after the system has been running for a
period longer than 10 minutes. Reading this data before this time can provide false readings and provide a
false sense of security.
12. Not completing ALL questions on the technician's checklist inside the warranty registration form that is
provided with the manuals.
In effort to protect our customers from any possible faulty installation which can lead to premature unit failure, we
like to provide this information to you in addition to the technician. You can the judge by yourself and observe
while your system is being installed, though your observation may not be treated as any guarantee or witness
whether your system would be installed properly and professionally. If at any time you feel that there may be an
installation issue, please have your technician contact YMGI at [phone] x 703 to clear some questions.
MUST READ-ATTENTIONSAND WARNINGS
CUSTOMER AND TECHNICIAN MUST READ
LIMITED PRODUCT WARRANTY REGISTRATION CARD
LIMITED PRODUCT WARRANTY POLICIES
CUSTOMER AND TECHNICIAN MUST READ
MEMO
All Units Shall Be Installed by Experienced or Licensed Contractor Or
Technician. Read Manuals before Installation.
YMGI Group Shall NOT TakeAny 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.
End User Technician Contact of Technical Support-Manufacturer
Toll Free Number: 1-866-833-3138 x 703
Email: [email protected]
(End user needs to contact installation or service technician to check the unit, before the
technicians contact manufacturer technical support-straight technical communication)
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MUST READ MUST READ
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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 recommendations, suggestions, and requirements, written in the
following pages and other documents, is the first step in our hope and effort to help ensure a smooth installation
& proper operation of your products for many years.
WHY DOES YMGI GROUP REQUIRE INSTALLATION AND SERVICE TO BE
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 orA.C.C.A
certified technicians are strongly recommended.
5) Some contractors/ technicians may not feel comfortable about installing the equipment that you purchase 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) Hoe difficult or how long the inter-connecting pipes and wires are to be installed.
11) If all the suggestions have been taken and all the necessary steps are followed.
CUSTOMER AND TECHNICIAN MUST READ
The cost of not having your unit installed properly can be more expensive than spending the little extra money
that hiring the right contractor will cost. Protect your investment and warranty eligibility by doing it right the first
time.
THE FOLLOWING LISTS THE JOBS AND RESPONSIBILITIES OF THE
TECHNICIAN/ CONTRACTOR:
* Performing a load calculation for the room(s) you would like to air condition. Cooling requirements will be
different from the heating requirements. They will consider cooling hours, heating hours and your special needs
or requirements. Supplemental heating such as baseboard heater or portable heater may help you save money
by not over-sizing or under-sizing the heating equipment.
* Selecting the right type, size or model of cooling and/or heating equipment.
* Determining the best location to install the unit. (Positioning indoor unit, outdoor unit and running the inter-
connecting pipes/wires.)
* Selecting the correct electrical components (HVAC circuit breaker or fuse and disconnect switch for the electric
power to the outdoor unit, types and sizes of the connecting wires between circuit breaker/disconnect switch
and outdoor unit, and the wires between outdoor unit and indoor unit).
* Keeping the indoor unit away from the ceiling and the outdoor unit away from the wall, bushes and other
obstacles at a proper and safe distance to allow for the proper airflow through the unit's.
* Placing the units on a secured level structure.
* Taping and sealing both ends of the inter-connecting pipes, before running them through structures, to prevent
dust or other debris from getting into the pipes otherwise they will contaminate and damage the refrigeration
system. Failure to follow this practice will make your factory warranty void.
* Connecting the inter-connecting pipes between the outdoor and indoor units. Checking for leaks through
pressurization with nitrogen. After releasing nitrogen, evacuate the piping and indoor unit, for removal of system
contaminants. Finally refrigerant introduction and adjustment, if necessary, from the outdoor unit.
* Back-seating the stopping valves at outdoor condensing unit to release pre-charged refrigerant from outdoor
unit to indoor unit.
* Measuring and recording the electrical voltages at different terminals and the refrigerant pressures at stopping
valves of outdoor condensing unit.
* Verifying and ensuring the unit is connected to the proper electrical power supply.
* Adjusting refrigerant levels (if necessary) following the installation instructions or chart on the unit.
* Checking for any unusual noises and other abnormalities that might be present.
* Operating the unit and check all functions, one by one, and explain to the owner how to operate and maintain
the unit.
* Completing all fields in detail on the installer checklist, signing and dating the Warranty Registration Card/Form.
LIMITED PRODUCT WARRANTY
If the installation is successfully and fully done by a qualified licensed/ certified HVAC technician/contractor, the
registration card/form is filled completely and correctly, and filed along with a valid installation invoice from the
contractor company within 7 days of the original installation, the following standard Limited Product Warranty is
qualified:
5-year on compressor and 1-year other PARTS ONLY. There is no labor coverage.
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.
CUSTOMER AND TECHNICIAN MUST READ

MUST READ MUST READ
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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 theLimited 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):
OOO
At cooling: indoor return air F, discharge air F, and outdoor F
OOO
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?

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1) The YMGI Limited Product Warranty Policy, details the eligibilities, coverage's and other explanations of the warranty
terms between YMGI group and the unit owner.
2) The YMGI Limited Product Warranty Policy and the Warranty Registration Card/Form are either included inside the
user's manual and/or installation instruction manual, or come separately in the unit packaging box/envelope. If for any
reason they are not included with your shipment, contact our sales or customer service to request a copy (electronic or
printed), prior to installation.
3) The checklist, in the Warranty Registration Card/Form, is for the currently licensed/ certified HVAC technician to fill out
completely, whileverifying all unit functions are operating correctly. This checklist is for the technician to test and check all
details of your unit, to verify and ensure its proper operation.
4) The technician must complete all fields in the Warranty Registration Card/Form, especially the unit model and serial
numbers and distributor information, and most importantly, the technician checklist.
5) Warranty Registration Card/Form shall be mailed, along with the original copy of the currently licensed HVAC
contractor's full installation invoice, to YMGI Group, within 7-days after original installation, in order for YMGI to review
and process your warranty registration.
6) Keep a copy of Warranty Registration Card/Form for your own use in the future, to aid in any possible future warranty
claiming, any request of parts, customer service, and/or technical support.
7) YMGI reserves the right to approve or deny the warranty status based on the information reviewed.
Mailing address of the Warranty Registration Card/Form: Warranty Department, YMGI Group, POB 1559,
O'Fallon, MO 63366, USA.
Following these requirements will aid in ensuring the units will be installed to the general HVAC practicing
standards and are necessary factory requirements, to find problems early, prevent possible damage to the unit
and help ensure the unit will work properly for its life time.
QUESTIONS ABOUT SELF-INSTALLATION VS HIRING LICENSED HVAC
TECHNICIANS
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.
Some DIY installations have been successful, but these are exceptions. Most have resulted in equipment failure,
due to lack of knowledge and experience. Afew of the problems result from DIY's lack of knowledge in the
following areas:
* Sizing and selecting correct type, size and model of cooling and/or heating equipment.
* Sizing and installing correct electric circuit breakers and wires.
* Wiring the units correctly and properly.
* Taping the ends, connecting to indoor and outdoor units correctly and properly.
* Vacuuming the inter-connecting refrigerant lines.
* Checking and/or fixing the refrigerant leaks.
* Checking and/or fixing the condensate drain leaks.
* Releasing the refrigerant from outdoor unit to indoor unit.
* Running the unit to check all the unit functions.
* Conducting the installation or trouble-shooting with correct tools, experience or professional knowledge to
correct the problem.
RECEIVING AND FREIGHT DAMAGE
ATTENTION
* Freight (package/unit) shall be checked thoroughly for damage at receiving before accepting by signing on the
carrier's delivery paperwork.
* Upon shipment being signed for acceptance, it becomes a binding document as to the condition of the products
on delivery. We cannot process any shipping damage claim, if you accept the delivery.
* If damage is found at delivery, both you and the delivery driver must make notes on the delivery receipt or other
freight paperwork detailing the damage found by marking position/parts on unit, description of damage, time/
date, your name, contact phone, etc. on the delivery documents. Make a copy of the marked delivery receipt.
CUSTOMER AND TECHNICIAN MUST READCUSTOMER AND TECHNICIAN MUST READ
PRIOR TO OPENING THE BOX OF, OR INSTALLING /
SERVICING THE PRODUCT (HVAC & R)
Upon the purchasing, unpacking, installation and/or service of this product, you and all other parties hired to
install or service your products, have read all YMGI Group (we) has written hereafter and all agree:
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.Acertification 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.