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YMGI, Engineered Comfort Products for A Sustainable  

and Efficient Green World! 

INSTALLATION INSTRUCTIONS & USER MANUAL 

Wall Mount Mini Split Systems 

SYMPHONY SOLAR DC INVERTER SINGLE ZONE (86) Series 

09-24k, 24 & 48v DC Solar Powered Cooling and Heat Pump

 

Model Numbers:

 

WMMS-09KS-V2D(86) 
WMMS-12KS-V2D(86) 
WMMS-18KS-V2D(86) 
WMMS-24KS-V2D(86) 

 

 

Thank you for choosing this YMGI product. Please read the owner’s manual carefully before installation and operation and retain for your 
records and future reference. If you need a replacement copy, please contact your local agent or visit www.ymgigroup.com to download 
a current electronic version. 

NOTICE

 

This  product  is  designed  and  manufactured  to  be  free  from  any  defects  in  material  and  workmanship  during  normal  use  and 
maintenance. Installation, operation, maintenance and repair must follow all standards and professional practices for regular 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 equipment, property even personal injury. 
 

Installer

: Currently licensed/certified HVAC technicians only. Must Read the manual and all provided documents prior to installation. 

Complete and fill out all required information on the warranty registration card. 

User

: Retain this manual and all supplied documents for your records and future reference. 

Servicer

: Use this manual for information concerning servicing and maintenance of this product.

 

SAFETY WARNING

 

Only qualified technicians should install and service this equipment. The installation, startup, operation and servicing of this equipment 
can be hazardous and requires a HVAC professional who has been trained, licensed and  certified. Installations, adjustments or any 
equipment alterations done by an unqualified person could result in serious injury and even death. When working on the equipm ent, 
observe all precautions in the provided documents, on the tags, stickers, and labels that are attached to or placed on the equipment.

 

Summary of Contents for 86 Series

Page 1: ...te 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 Installer C...

Page 2: ...Split Wall Mount Systems 14 System Layout 16 Connection of Wires at Indoor and Outdoor Unit 18 Engineering Submittals Unit Specifications 20 Engineering Submittals Unit Dimensions 21 Air Conditioner...

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 doc...

Page 6: ...ration piping 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...

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 room temperature too low Keeping the temperature difference between indoor and outdoor unit within 41 5 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: ...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 perfect fit in locations where installation and applica...

Page 15: ...service we ask you to follow these guidelines 1 Before using your solar heat pump please be sure to read all Notices to avoid damaging the solar air conditioner or other accidents that could be caused...

Page 16: ...put Day Night saving Like all DC Inverter units the YMGI s 86 series solar heat pump runs totally on DC power With solar charge controller solar panels save extra energy into batteries and batteries r...

Page 17: ...olar heat pump runs totally on DC power With solar charge controller solar panels save extra energy into batteries and batteries release to heat pump system when needed By using solar DC power instead...

Page 18: ...form being transmitted to the wire connection Replace screws or fasteners back to where they were Notes The environment conditions must be taken into consideration when the connections of power cable...

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: ...30 51 x 10 25 x 8 27 30 51 x 10 25 x 8 27 42 125 x 14 57 x 10 25 NET in 33 x 12 8 x 10 4 33 x 12 8 x 10 4 33 x 12 8 x 10 4 38 78 x 12 6 x 8 46 Outdoor Unit Shipping in 31 1 x 10 25 x 21 25 31 1 x 10 2...

Page 21: ...GINEERING SUBMITTALS DIMENSIONS INDOOR UNITS Model W inches H inches D inches WMMS 09E V2D 86 30 59 9 84 8 07 WMMS 12E V2D 86 30 59 9 84 8 07 WMMS 18E V2D 86 35 83 11 50 8 07 WMMS 24E V2D 86 39 76 12...

Page 22: ...Idea 22 UNIT ENGINEERING SUBMITTALS DIMENSIONS OUTDOOR UNITS Dimensions In Weight lbs Model W H D A B Net Gross 09K 31 10 20 87 10 24 11 42 21 26 88 18 99 21 12K 31 10 20 87 10 24 11 42 21 26 99 21 10...

Page 23: ...for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 23 AIR CONDITIONER COMPONENTS The illustration below are based on a standard model of heat pump Your unit appearance may differ...

Page 24: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 24 INSTALLATION CLEARANCE REQUIREMENTS GENERAL...

Page 25: ...r Modern Green Idea 25 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 26: ...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 F...

Page 27: ...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 28: ...mells smoke or components are excessively warm please turn off power to the system immediately and contact an HVAC technician for service Never attempt to repair or service the machine yourself Solar...

Page 29: ...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 30: ...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 31: ...ulation and bend the two pipes individually and not together If the pipes need to come out of the rear side facing the front of the indoor unit of the indoor unit there is no need to snap off anything...

Page 32: ...ngled downward pitched towards the drain direction at 1 4 per foot Figures below from the 2nd to 5th show some incorrect practices The drain hose may be extended using the hose supplied with the insta...

Page 33: ...nage fitting accessories Actual unit parts look installation may vary from illustrations INSTALLATION PICTURES WALL MOUNT BRACKET FOR OUTDOOR UNIT S PART VARIES UPON MODELS AVAILABILITY Select a secur...

Page 34: ...emperature 40OC to 85OC Frame Anodized aluminum alloy Maximum System Voltage 600V DC Junction Box IP65 rated Maximum Series Fuse Rating 20AMPS Output Cables LAPP 4 0mm2 asymmetrical lengths 1200mm 47...

Page 35: ...o the distance from PV modules to outdoor unit of AC the recommended conductor cross section is AWG 12 and it should accord with UL4703 2 The MC 4 connectors should be assembled to the PV wires and th...

Page 36: ...e firmly secured 5 Push the crimped contact into the socket of the plug insulator until it engages Pull lightly on the lead to check that the metal part has engaged 6 Insert the test pin with the corr...

Page 37: ...n Green Idea 37 9 Compress the two snap in springs x by hand or use the PV MS tool to separate the coupling 10 To Plug together Mount the plug connection until it engages Check to make sure it is lock...

Page 38: ...ord of indoor and outdoor units should not use polyvinyl chloride PVC Wires must use chloroprene rubber wires including high tension signal wires A licensed HVAC technician can lengthen or shorten ele...

Page 39: ...onnected in series by a ground wire The air conditioner works using a DC power source and should always be grounded Please install repair and maintain this air conditioner using a trained HVAC profess...

Page 40: ...e unit can be connected to pure DC power sources such as a battery or a converted DC power source The DC indicates the same as POS and DC indicates the same as NEG The power source connection terminal...

Page 41: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 41...

Page 42: ...wed PIPING AND WIRING SIZES Model Liquid Gas Line Min Max Length Elevation Power Wire Min Disconnect Switch Box to Outdoor Unit Power Control Wire Min Outdoor Unit to Indoor Unit Recommended HVAC Circ...

Page 43: ...traight 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 slow...

Page 44: ...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 45: ...NG SIZES UNITS Model Liquid Gas Line Min Max Length Elevation Power Wire Min Disconnect Switch Box to Outdoor Unit Power Control Wire Min Outdoor Unit to Indoor Unit Recommended HVAC Circuit Breaker F...

Page 46: ...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 47: ...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 48: ...e to check and make sure all of the wiring and piping are correct and reliable the stop valves are open completely and the air conditioner is grounded reliably 1 Supply main power the unit will make a...

Page 49: ...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 so...

Page 50: ...ion installed correctly and securely It may cause unit malfunction or damage to the part unit Has the unit been connected to a secure ground connection It may cause electric leakage Is the power cord...

Page 51: ...To stop operation Push I O button to turn the system off To adjust the temperature Push the or button to raise or lower the temperature You can change the temperature display from Celsius to Fahrenhei...

Page 52: ...operation Push I O button Select the operation mode Push MODE to select operation mode The operating mode sequence is Automatic Cooling Dehumidification Heating To stop operation Push I O button All...

Page 53: ...s in Cooling or Heating mode Press the SLEEP button The sleep icon will appear on the control panel display CLOCK To set the clock on the remote control hold down either the MIN or HOUR button until t...

Page 54: ...8 Move solar panels so they face to sun Strange noise from unit 1 Water flow sound 2 Exhaust sound 3 Arrangement is instable 4 The operation noise is obviously unusual 1 Refrigerant is circulating in...

Page 55: ...completed 6 When system is heating the Outdoor unit may generate condensation This is a result of defrosting and thawing and is not a malfunction 7 After the solar heat pump is used in the automatic m...

Page 56: ...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 57: ...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 58: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 58 Indoor Electric Diagram Cooling only Outdoor Electric Diagram...

Page 59: ...YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 59 Cooling and heating Outdoor Electric Diagram...

Page 60: ...73 2 1 4408 13 0 721 58 59 0 79 185 131 0 14 892 203 0 4 0268 275 0 1 407 11 2 676 92 60 8 75 519 132 8 14 351 204 8 3 9114 276 8 1 3741 9 4 635 35 62 6 72 045 134 6 13 845 206 6 3 8 278 6 1 3421 7 6...

Page 61: ...01 7 891E 01 8 349E 01 0 4 3 182E 01 3 376E 01 3 581E 01 89 6 3 743E 00 3 840E 00 3 938E 00 179 6 7 243E 01 7 671E 01 8 120E 01 1 4 3 027E 01 3 208E 01 3 399E 01 91 4 3 605E 00 3 701E 00 3 798E 00 18...

Page 62: ...OTES Put down any questions you have or problems you have 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 you have...

Page 63: ...omfort Products for A Sustainable and Efficient Green World YMGI Your Modern Green Idea 63 SERVICE MAINTENANCE NOTES No Date Contents of Service Maintenance Technician s Company Name Technician Name P...

Page 64: ...SEER 09 24K Btu 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...

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