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

 

YMGI: Your Modern Green Idea 

 

 

 

 

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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. 

 

The cost of not having your unit professionally installed can be more expensive than the additional cost of hiring a 
certified contractor. Protect your investment and warranty eligibility by doing it right the first time. 

Summary of Contents for WMMS-09C-V2A(57)2

Page 1: ...ular cooling and heating equipment such as 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 e...

Page 2: ...Breif Introduction to Mini Split Wall Mount Systems 14 Sample Layout 15 Specification Sheet 16 Connection of Wires 18 Engineering Submittals Dimensions 20 Installation Clearance 22 Installation Locati...

Page 3: ...rements for handling reclaiming recovering and recycling of certain refrigerants the equipment and tools necessary to perform these service procedures In addition some states or municipalities may hav...

Page 4: ...stem installer 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...

Page 5: ...etc which the 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 docu...

Page 6: ...ling 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 unit 3 Cross...

Page 7: ...D or any other 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 s...

Page 8: ...ation or 90 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 o...

Page 9: ...st will be charged 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...

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

Page 11: ...ne 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 ver...

Page 12: ...ts 17 While operating in cooling mode do not set the indoor unit s room temperature too low Keeping the temperature difference between indoor and outdoor unit within 41 18 YMGI Group recommends that o...

Page 13: ...Make sure to disconnect 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 ar...

Page 14: ...ce stacking or bracket kit is used some outdoor units can be stacked 2 or 3 units high depending upon unit size and applications Air is discharged horizontally quietly and smoothly These units are a p...

Page 15: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 15 SAMPLE LAYOUT OF INSTALLED SYSTEM...

Page 16: ...HIGHLY HIGHLY HIGHLY Capacity Btu h 7882 8922 5560 7200 22246 24430 Input W 915 1010 1255 1610 2070 2240 Rated current RLA Amp 4 1 4 4 4 2 4 8 8 8 9 4 Refrigerant oil oil charge ml FV50S or equivalen...

Page 17: ...49 2 49 2 Max difference in level Ft 16 4 16 4 16 4 16 4 16 4 16 4 Connection wires between IDU and ODU 4 AWG18 4 AWG18 4 AWG18 4 AWG18 4 AWG18 4 AWG18 Control Type Remote Control Remote Control Remot...

Page 18: ...wires taking into consideration the voltage losses the core wire of power cable must be one size larger than the specifications The grounding wire must be connected to the indoor units and outdoor uni...

Page 19: ...d requires less time Increased efficiency and lifetime of system YMGI Mini Split Wall Mount Systems are all heat pumps some manufacturers make cooling only and heat pumps with auxiliary electric heate...

Page 20: ...SUBMITTALS DIMENSIONS INDOOR UNITS Model W inches H inches D inches WMMS 09E V2A 57 2 WMMS 12E V2A 57 2 31 11 8 WMMS 18E V2B 57 3 35 11 8 WMMS 24E V2B 57 3 43 12 9 WMMS 30E V2B 57 3 46 15 12 WMMS 36E...

Page 21: ...MITTALS DIMENSIONS OUTDOOR UNITS Dimensions In Weight lbs Model W H D A B Net Gross 09K 28 74 21 18 9 44 10 94 16 53 60 64 12K 31 96 21 25 10 11 10 94 20 07 71 75 18K 33 46 23 85 11 49 12 67 19 88 88...

Page 22: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 22 INSTALLATION CLEARANCE REQUIREMENTS GENERAL...

Page 23: ...r Modern Green Idea 23 INSTALLATION CLEARANCE REQUIREMENTS OUTDOOR UNIT MAKE SURE OF ENOUGH SPACE FOR INSTALLATION AND MAINTENANCE To take into consideration the operational convenience and safety in...

Page 24: ...d Work Individual wrench Set Use Two at One Time Flare Nut Tool Set Not Shown Hex Head Allen Wrench Sets Metric and Imperial Brazing Rods and Brazing Torch Outfit for AC Application Not Shown Brazing...

Page 25: ...ort platform 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...

Page 26: ...indoor unit Install Mounting Plate and Drill Hole for Combination of Copper Line Wire Cable Drain Hose NOTES Anchors must be put into the holes where the solid arrows are pointing as shown to secure t...

Page 27: ...n from the one preset at factory towards left side if facing the front cover of indoor unit lay the indoor unit down on a soft cushion or foam Don t rub the plastic casing To keep from damaging the pi...

Page 28: ...n at right side NOTES One can use a clamp to further secure the connections HANG INDOOR UNIT Run copper set wire cables drain hose through the wall hole and hang the indoor unit onto the mounting plat...

Page 29: ...secured location where the outdoor unit can be installed properly Orient the unit rear side intake grill towards wall and front side discharge grill away from wall For ground installation use factory...

Page 30: ...nit to Indoor Unit Recommended HVAC Circuit Breaker Fuse AMP to Outdoor Unit 09K 1 4 3 8 15 49 2 16 4 L1 L2 G 115V 1 60 12AWG 1 2 3 G 115V 1 60Hz 4 AWG18 20 12K 1 4 3 8 15 49 2 16 4 L1 L2 G 115V 1 60...

Page 31: ...ht and smooth Engage the cutting blade The cutting blade must be straight and perpendicular to the pipe surface Don t cut too fast or apply too much pressure Turn and tighten the tube cutter slowly Re...

Page 32: ...PES BETWEEN THE INDOOR AND OUTDOOR UNITS Seal Copper Line Set Wire and Cable Drain Hose Line Combination Run cables along with the refrigeration copper line sets and secure them with tape 6 feet apart...

Page 33: ...ire Min Outdoor Unit to Indoor Unit Recommended HVAC Circuit Breaker Fuse AMP to Outdoor Unit 09K 1 4 3 8 15 49 2 16 4 L1 L2 G 115V 1 60 12AWG 1 2 3 G 115V 1 60Hz 4 AWG18 20 12K 1 4 3 8 15 49 2 16 4 L...

Page 34: ...RISER OR BRACKETS BRKT XXXX SC1 Made of steel Coated with weatherproof polyester powder Model Size Inch Capacity A B LBs Btu h BRKT 0918 SC1 17 7 15 4 320 09K 18K BRKT 1860 SC 21 7 18 3 360 18K 60K B...

Page 35: ...ice valves remain front seated Turn off manifold valve low to check if the vacuum level is maintained for a minimum of 60 minutes Be certain there is no pressure in the system when repairing a leak Va...

Page 36: ...g method than rough refrigerant addition or deduction guideline shown above In some cases if the service valve on unit is 5 16 and your service valve connection is 1 4 need to use a 5 16 1 4 adaptor s...

Page 37: ...t may cause insufficient cooling heating or compressor overheating or other unit malfunctions Is heat insulation sufficient It may cause unexpected condensate and dripping Is drainage pipe tested It m...

Page 38: ...LTER INSTALLATION INSTRUCTIONS 1 Forcibly lift up the panel at a specific angle from the two ends of the front panel following the arrow direction Then pull the air filter downwards to remove it Figur...

Page 39: ...ontroller Note Above figure shows all indicators for the purpose of illustration but when in use only the activated function icons are indicated When air conditioner is in cooling only mode the HEAT i...

Page 40: ...e you would like the unit to switch on Press the TIMER button a second time The minutes display will flash Use the or to set the number of minutes before you would like the unit to switch on Press the...

Page 41: ...d up SE will be displayed on the remote controller and air conditioner will adjust the set temperature automatically according to factory settings to reach to the best energy saving effect Press TEMP...

Page 42: ...telephone remote controller should be close to indoor unit during operation Replace new batteries of the same model when replacement is required When you will not be using the remote for prolonged per...

Page 43: ...a mild nonabrasive cleanser CLEAN THE FRONT PANEL MAKE SURE TO TAKE IT OFF BEFORE CLEANING Take off the front panel Along the direction of arrows lift the front panel up meanwhile hold both slots of...

Page 44: ...s have been cleaned 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 filters b...

Page 45: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 45 WIRING DIAGRAMS WMMS 09C V2A 57 2 WMMS 09E V2A 57 2...

Page 46: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 46 WMMS 12C V2A 57 2 WMMS 12E V2A 57 2...

Page 47: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 47 WMMS 18C V2B 57 3 WMMS 18E V2B 57 3...

Page 48: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 48 WMMS 24C V2B 57 3 WMMS 24E V2B 57 3...

Page 49: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 49 WMMS 30C V2B 57 3 WMMS 30E V2B 57 3...

Page 50: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 50 WMMS 36C V2B 57 3 WMMS 36E V2B 57 3...

Page 51: ...for more information Error Codes Display for Indoor Unit Malfunction Indoor Unit Display Status Code LED display Running lamp flashing frequency Timing lamp flashing frequency Communication fault bet...

Page 52: ...scharge temperature protection P4 Lit 4 Compressor overheat protection P5 Lit 5 Compressor suction temperature protection P6 Lit 6 Power supply high or low current high or low voltage protection P7 Li...

Page 53: ...03 120 2 2 164 2 207 2 249 3 30 1 70 21 2 16 797 17 160 17 524 1 00 4 00 122 2 096 2 138 2 180 3 34 1 66 23 16 090 16 431 16 733 1 04 3 96 123 8 2 030 2 071 2 112 3 37 1 63 24 8 15 418 15 739 16 060...

Page 54: ...520 206 6 3 655 13 642 600 60 8 74 590 134 6 14 010 208 4 3 537 11 2 605 200 62 6 71 270 136 4 13 520 210 2 3 424 9 4 570 200 64 4 68 120 138 2 13 050 212 3 315 7 6 537 400 66 2 65 120 140 12 600 213...

Page 55: ...seen as a unit history No Date Notes Asked Your Technician for Help Did You Ask YMGI Tech for Help USER NOTES Put down any questions or issues you have had as a unit history No Date Installation Compa...

Page 56: ...8 16 and 24 Ton Symphony SOLO DC Inverter 57 2 3 Single Zone 16 SEER 09 36K Btu h 58 4 78 1 Single Zone 18 23 SEER 09 36K Btu h Symphony CHOIR DC Inverter 46 2 DC Inverter Multiple Zone 15 SEER 2x09K...

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