YMGI WMMS-09K-V2A/B(58) 2 Installation Instructions Manual Download Page 3

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

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

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 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.
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

Summary of Contents for WMMS-09K-V2A/B(58) 2

Page 1: ...ed free from defects in material and workmanship for normal use and maintenance Installation operation maintenance and service shall follow professional practices for regular cooling and heating equip...

Page 2: ...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 test...

Page 3: ...s 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...

Page 4: ...rical 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 c...

Page 5: ...rience 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 t...

Page 6: ...help you in the following steps in sequence from 1 to 3 CUSTOMER AND TECHNICIAN MUST READ If the damage is minor or partial that you choose to accept you can contact the distributor or YMGI to discus...

Page 7: ...end to you the Customer Request to Ship Products to YMGI Service Center for Inspection and Repair and Authorization to Charge form 2 You will review the form and fill all fields appropriately sign and...

Page 8: ...s of general up flow condensing units are limited such as apartments condos lofts multi families and high rise buildings and others named or unnamed a Indoor unit s delivers the thermal and acoustical...

Page 9: ...copper tube Aluminum fin copper tube Axial flow Axial flow T1 T1 1 4 1 4 5 8 5 8 I IP24 560 170 Automatic Defrosting Automatic Defrosting WMMS 30C V2B 58 2 WMMS 36C V2B 58 2 MITSUBISHI MITSUBISHI 125...

Page 10: ...ed on a wall or balcony close to the indoor unit the following are some benefits for contractors and customers Each system is thoroughly tested before leaving the factory Each unit is acoustically the...

Page 11: ...2K 18K 24K Unit W 30 30 35 0 36 2 D1 12 6 21 3 11 3 12 6 21 3 11 3 15 6 22 0 24 0 11 5 15 7 16 8 D 10 1 10 1 13 4 14 6 P20 OF 38 USER NOTES AND SERVICE LOG 6 6 12 100 6 20 12 6 20 18 21 11 INSTALLATIO...

Page 12: ...Tape Level Flash Light Screw Driver Phillps and Flat Hammer Knife Scissors Goggled Glass Mask Gloves Ladder 2 Refrigeration Related Work RECOMMENDED TOOLS FOR INSTALLATION 3 Electrical Related Instal...

Page 13: ...are to be used make sure to keep the two holes close to each other at least 2 inches apart Mounting plate should be attached to the structural part of the wall Minimum clearance as shown below is requ...

Page 14: ...in condensing unit othewise condensate may ice up causing damage to the condensing unit Suggest to use YMGI provided brackets and condensate drainage fitting accessories Indoor unit front Bottom the r...

Page 15: ...perpendicular to the pipe surface Don t cut too fast or too hard Turn and tighten the tube cutter slowly Remove residual left and de bur at the cutting edge The cutting edge should be clear and clean...

Page 16: ...ation securely on the external wall with proper clamps at 6 feet apart Fill the gap between the wall hole and wall sleeve with putty to keep from rain or dust entering inside PIPING GUIDE Set the pack...

Page 17: ...frigerant Charge Level Reference Temperature Pressure Table Split Condensing Unit R410A AC Product Series YMGI Group Mini Split Version 01 11 2010 Reference Temperature Pressure Table Split Condensing...

Page 18: ...g indoor fan motor works Heating all stop running 3s off blink four times 1 Forcibly lift up the panel at a specific angle from the two ends of the front panel following the arrow direction Then pull...

Page 19: ...e is not staable cooling dehumidifying compressor will stop indoor fan motor works Heating all will stop 1 Check the Input voltage if the Voltage is lower than 150VAC restart the machine when the powe...

Page 20: ...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 too...

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