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

 

 

 

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WHY DOES YMGI GROUP REQUIRE INSTALLATION AND SERVICE TO BE PERFORMED 100% 
BY CURRENTLY LICENSED OR CERTIFIED HVAC TECHNICIANS/CONTRACTORS? 

 

1. 

Expertise and Safety: 

They have the training and experience to accurately and safely install and service your equipment. The equipment 
runs with high-pressure refrigerant, oil and electrical current. 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  problem  occurs  with  the  unit  that  has  been  fully  installed  by  a  currently  licensed  or  certified 

technician/contractor, contact the original licensed or certified HVAC technician to evaluate the unit as they have 
the training and experience to correct the problem quickly and efficiently. A technician may be unwilling to repair 
an issue on a unit that they did not install. If you do find a technician willing to perform this service, there is an 
increased possibility of higher service fees, 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. These laws may require only licensed or certified professionals can install and service this type 
of high pressure HVAC equipment. 

 

SUGGESTIONS TO AID YOU IN HIRING AN HVAC CONTRACTOR: 

 

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

longer practicing (retired, etc.) in this field, may not have current technical knowledge or may lack experience on 
the equipment you have purchased. 

2.  Hiring a licensed technician to install your unit as a "side job" and not hiring a licensed HVAC company may pose 

possible risk. This may result in an incomplete or unsatisfactory installation, no guarantee for workmanship and 
lack of maintenance and further service to your unit. 

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

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

4.  Use only a reputable licensed/certified HVAC installation professional to prevent any unexpected charges because 

of unethical business practices. 

5.  Check their references, verify they provide professional service for their customers. N.A.T.E or A.C.C.A certified 

technicians are strongly recommended. 

6.  Some contractors/technicians may not feel comfortable about installing equipment that has been purchased by 

someone other than themselves. They prefer to purchase and install the equipment themselves. You can contact 
YMGI directly to check and see if there are contractors in your area who have installed our products or any similar 
products. 

7.  Ask for a detailed quote for the complete installation project. A flat rate quote is the safest contract for both you 

and the contractor. 

8.  Local  HVAC  technicians  may  charge  you  on  a  project  basis  or  on  an  hourly  basis.  It  has  been  our  general 

experience; 

a full single head installation normally can cost $800 to $1500

. These costs are estimates, and 

your actual costs may differ due to your specific job requirements and installation location. 

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

  Difficulty or complexity of securely installing the indoor unit. 

  Difficulty or length of the inter-connecting pipes and wires to be installed. 

10. A successful installation is dependent on all these suggestions and all the necessary steps are followed. 
11. If the contractor(s)/technician(s) are experienced with the systems/brands you purchased. 

You might save on 

the installation cost, but remember to always ask for and verify references. 

12. The contracts should list and detail all work to be performed and the standards they will follow. Some contractors 

are willing to include a 1-year installation/service warranty at no extra charge. Check to see if this is an available 
option. If available, make sure it is included in the contract. 

13. Verify and confirm the installation is completed and all the unit functions have been tested and working properly. 

All items on the checklist should be checked and clearly marked in the warranty registration card/form, prior to 
paying the contractor in full. 

 

Summary of Contents for WMMS-09EW-V2B(59)4

Page 1: ...NEC State or Local Codes and all related documents manuals provided by YMGI Failure to follow and adhere to all codes and documentation can cause damage to equipment property even personal injury Inst...

Page 2: ...ng an HVAC Contractor 10 Safety Precautions 12 Indoor Unit Diagram 13 Specification Sheet 14 Unit Dimensions Mounting Bracket Clearance 15 Wiring Diagrams 16 Recommended Tools for Installation 17 Syst...

Page 3: ...ndling reclaiming recovering and recycling of certain refrigerants the equipment and tools necessary to perform these service procedures In addition some states or municipalities may have additional r...

Page 4: ...or HVAC professional as soon as possible and provide the following information Data on the unit model number serial number and owner s name A detailed description of the unit s problem before and aft...

Page 5: ...manufacturer may not require certified and licensed personnel to install Reading and following YMGI Group recommendations and requirements contained in the following pages and other documents is the f...

Page 6: ...before pulling the piping through any structures at time of installation 2 Not installing an oil P trap in the copper suction line where the indoor unit is located 18 feet or more below the outdoor un...

Page 7: ...r identifying marks on each pair of copper lines and wiring cable sets to keep from cross piping or cross wiring in multiple zone installations or where pipes for different single zone systems are clo...

Page 8: ...0 days as of original shipping date from YMGI Group whichever comes first This is a standard limited liability warranty and DOES NOT cover the following Any damage or repairs to properties or persons...

Page 9: ...rged accordingly 3 YMGI will ground ship out the parts ASAP Expedited shipping is available at the customer s expense 4 Replacement parts that have an approved warranty registration are to be warrante...

Page 10: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 10...

Page 11: ...liar with Local contractors have a faster response time and it will be easier for you to determine if they are reputable 4 Use only a reputable licensed certified HVAC installation professional to pre...

Page 12: ...unit or can result in electric shock 16 Do not expose the unit to moist or corrosive environments 17 While operating in cooling mode do not set the indoor unit s room temperature too low Keeping the t...

Page 13: ...isconnect the power supply and switch off all circuits prior to inspecting or servicing the unit Inspecting and servicing the unit while the power supply is connected and the circuits are switched on...

Page 14: ...Green World 14 Indoor Unit Diagram Rated Operating Condition Indoor Side Condition Outdoor Side Condition Dry Bulb Temp C F Wet Bulb Temp C F Dry Bulb Temp C F Wet Bulb Temp C F Rated Cooling 27 80 6...

Page 15: ...1050 800 1300 900 850 Output W 20 20 20 35 RLA AMP 0 1 0 1 0 4 0 4 Capacitor uF Fan Wheel Type Piece Cross Flow 1 Cross Flow 1 Cross Flow 1 Cross Flow 1 Diameter x Width In 3 6x 25 4 3 6x25 4 4 2x 28...

Page 16: ...Products for A Sustainable and Efficient Green World 16 UNIT DIMENSIONS Model W inches H inches D inches WMMS 09EW V2B 59 4 WMMS 12EW V2B 59 4 33 4 11 4 8 2 WMMS 18EW V2B 59 4 38 2 11 8 8 8 WMMS 24EW...

Page 17: ...Products for A Sustainable and Efficient Green World 17 Electrical Installation Model Power Supply MCA A MOP A WMMS 09EW V2B 59 4 208 230V 1ph 60Hz 1 15 WMMS 12EW V2B 59 4 1 15 WMMS 18EW V2B 59 4 1 15...

Page 18: ...ht Screw Driver Phillips and Flat Hammer Knife Scissors Goggled Glasses Mask Gloves Ladder 2 Refrigeration Related Work Flat Surface Wrench Two Flare Nut Tool Set Hex Head Key Set Torch for AC Applica...

Page 19: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 19 SYSTEM LAYOUT INSTALLATION CLEARANCE...

Page 20: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 20 SYSTEM LAYOUT INSTALLATION CLEARANCE...

Page 21: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 21 SYSTEM LAYOUT INSTALLATION CLEARANCE SYSTEM LAYOUT INSTALLATION CLEARANCE...

Page 22: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 22 INSTALLATION LOCATION SELECTION...

Page 23: ...on the ground or bracket for the wall before or during construction and before installation Read installation instructions for all units thoroughly Ask rep distributor YMGI Group anything you are not...

Page 24: ...the table below Keep bending of the piping line to a minimum to avoid any possible negative impacts on the performance of the units Make a P trap if the elevation drop difference is more than 25 inche...

Page 25: ...service Steps to Mount Plate Mark all drill positions At least 4 anchor holes are required one at each perimeter corner of the plate These are needed to secure the plate where the bold arrows are poi...

Page 26: ...acing the front of the indoor unit of the indoor unit there is no need to snap off anything INSTALL THE INDOOR DRAIN PIPE The drain hose must be placed beneath the copper pipes and MUST NOT be kinked...

Page 27: ...fastener to secure the pipe at the specified location CONNECT REFRIGERANT PIPES BETWEEN THE INDOOR AND OUTDOOR UNITS First connect the copper tubes at indoor unit Bend the pipes accordingly using pipe...

Page 28: ...ng CUT REFRIGERANT PIPE Make sure where the pipe is to be cut is straight and smooth Engage the cutting blade The cutting blade must be straight and perpendicular to the pipe surface Don t cut too fas...

Page 29: ...and dry to protect the system from any possible contamination CONNECT REFRIGERANT PIPES BETWEEN THE INDOOR AND OUTDOOR UNITS Seal Copper Line Set Wire and Cable Drain Hose Line Combination Run cables...

Page 30: ...Use pulley or a bending tool to ensure a safe bending radius Do not make any sharp or small radius bends May also use rolling wheel to reduce internal pipe tension and avoid possible deformation Do no...

Page 31: ...s damaged or lost you can switch to Manual mode on the indoor unit This will allow the unit to run in AUTO mode only While in AUTO mode the unit temperature cannot be switched Contact your local servi...

Page 32: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 32 Buttons on Remote Controller Introduction for icons on display screen...

Page 33: ...a sound MODE button Press this button to select your required operation mode When selecting auto mode the air conditioner will operate to factory settings The set temperature can t be adjusted and wi...

Page 34: ...fixed position Hold button above 2s to set your required swing angle When it reaches your desired angle release the button Note may not be available When air conditioner receives this signal the air...

Page 35: ...e indoor temperature indicator displays corresponding temperature and automatically returns to display set temperature after three or five seconds I FEEL button Press this button to start I FEEL funct...

Page 36: ...ving function Under cooling mode press TEMP and CLOCK buttons simultaneously to start up or turn off energy saving function When energy saving function is started up SE will be displayed on the remote...

Page 37: ...n off child lock function When child lock function is on icon is displayed on remote controller If you operate the remote controller the icon will blink three times without sending signal to the unit...

Page 38: ...ween signal sender and receiving window should be no more than 8m and there should be no obstacles between them Signal may be interfered easily in the room where there is fluorescent lamp or wireless...

Page 39: ...nser CLEANING THE FRONT PANEL MAKE SURE TO REMOVE IT FROM THE UNIT OFF BEFORE CLEANING Take off the front panel Along the direction of arrows lift the front panel up meanwhile hold both slots of the f...

Page 40: ...e been cleaned dry them air dry completely out of direct sunlight NOTE Never use water hotter than 113 F to wash the unit or the filters as this can discolor and or deform the unit Never dry the filte...

Page 41: ...tems before contacting the maintenance serviceman Note If the air conditioner still runs abnormally after the above check and handling please contact the maintenance serviceman at the local appointed...

Page 42: ...ble and Efficient Green World 42 Error Description If some error occurs when the unit is running the error code will be displayed on the wired controller and the main board of the outdoor unit Check f...

Page 43: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 43...

Page 44: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 44 The words in gray means the corresponding function is unavailable...

Page 45: ...after the unit is restarted remote control or power resuming If the unit is powered off and then restored it will not run the compressor until 3 minutes later This is normal 3 minutes restarting prote...

Page 46: ...discharge louver This is normal when the conditioned cool air is mixed with the warm hot and humid indoor air Condensate may go away gradually once the indoor air is dehumidified and cooled down Water...

Page 47: ...No Date Noes Asked Your Technician for Help Did You Ask YMGI Tech for Help USER NOTES Put down whatever questions you have or problems you have seen as a unit history No Date Installation Company Nam...

Page 48: ...u h 58 2 Single Zone 16 22 SEER 09 36K Btu h 58 4 78 1 Single Zone 18 23 SEER 09 36K Btu h Symphony CHOIR DC Inverter 59 2 DC Inverter Multiple Zone 16 SEER 2x09K to 5x12K Btu h 59 2S DC Inverter Mult...

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