YMGI WMMS -18EC-V2B2 Installation Instructions And User Manual Download | Manualshive

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YMGI • Your Modern Green Idea

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

17

Wiring Connections

WMMS-12EC-V2B(59)2, WMMS-18EC-V2B(59)2

WMMS-24EC-V2B(59) 2

Model

Power Supply

MCA (A)

MOP (A)

WMMS-12EC-V2B(59)2

208/230V-1ph-60Hz

1

15

WMMS-18EC-V2B(59)2

1

15

WMMS-24EC-V2B(59)2

1

15

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15
16
17
18
19
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Summary of Contents for WMMS -18EC-V2B2

Page 1: ...ted 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 a...

Page 2: ...12 Brief Introduction to Ceiling Cassette Mini Split System 13 Indoor Unit Diagram 14 Specifications 15 Unit Dimensions 16 Wiring Connections 17 Recommended Tools 18 Installation Instructions 19 Installation Accessories 20 Installation Clearance 21 Hanging Preparation 22 Installation of Drainage Pipe 22 Connecting Refrigerant Pipes 25 Electrical Wiring 26 Test and Check Items after Installation 27...

Page 3: ...ecessary to perform these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants HVAC R technicians must know the applicable laws and follow them Disposal Notice Do not dispose of this product or its components as unsorted municipal waste as they contain items that may require special tre...

Page 4: ...orized system 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 before and after the problem occurred To avoid personal injury or property damage do not disassemble the unit yourself If disassembly is required to check the unit contact your authorized sys...

Page 5: ...cturer 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 first step to help ensure a smooth installation and proper operation of your unit for many years YMGI does not recommend nor allow any Do It Yourself DIY installation partially or fully Due to the complexity...

Page 6: ...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 piping and or cross wiring of any units including more than one single zone or a multi zone system 4 Not conducting a positive leak check prior to the negative leak check 5 Not conducting a positive leak check by charging the system with dry nitrogen 350 PSI to ...

Page 7: ...dentifying 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 close to one another Secure the wiring cables that connect between the indoor unit and outdoor unit following all applicable NEC state and local codes for your installation If there are no special NEC state...

Page 8: ...original installation location 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 or persons as an incident of or consequence of improper faulty transportation installation operation maintenance or service Any damage caused by frozen or broken water hoses or...

Page 9: ...rranty request will be charged accordingly 3 YMGI will ground ship the parts ASAP Expedited shipping is available at the customer s expense 4 Replacement parts that have an approved warranty registration are to be warranted for the remainder of the 5 year on parts and a 10 year compressor warranty Purchasing of replacement parts without a valid warranty filing or unapproved warranty request will b...

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

Page 11: ...me and it will be easier for you to determine if they are reputable Use only a reputable licensed certified HVAC installation professional to prevent any unexpected charges because of unethical business practices 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 Some contractors technicians may not ...

Page 12: ...fference between indoor and outdoor unit within 41 F 5 C YMGI Group recommends that only properly trained and authorized personnel be allowed to repair or service the unit Improper repairs or servicing can result in electric shock or fire hazards Please contact YMGI Group if you need help locating a qualified repair or service technician Before installation check the power supply to ensure it is s...

Page 13: ...ng 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 perfect fit in locations where installation and applications of general up flow condensing units are limited such as apartments condos lofts multi families and high rise buildings and others Indoor unit s deliv...

Page 14: ...YMGI Your Modern Green Idea YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 14 Indoor Unit Diagram ...

Page 15: ...ealed by Dry Nitrogen Yes Yes Yes Flare Nut Liquid Gas 1 4 3 8 1 4 1 2 1 4 5 8 Drain Hose Connection OD In 1 22 1 22 1 22 Condensate Pump Installed Lift In Yes 25 Yes 25 Yes 25 Refrigerant Environmental Friendly R410A Yes Yes Yes Filter Type Feature Standard Washable Standard Washable Standard Washable Size W x H In Qty 13 56 x 13 13 1 13 56 x 13 13 1 21 38 x 21 34 1 Clean Coil Surface Anti Mildew...

Page 16: ...1 W2 W3 W4 H H1 H2 H3 H4 WMMS 12EC V2B 59 2 25 19 32 25 19 32 23 5 8 23 5 8 16 3 8 2 1 2 9 3 32 7 1 16 1 27 32 4 3 8 5 5 32 WMMS 18EC V2B 59 2 25 19 32 25 19 32 22 13 32 22 13 32 16 3 8 2 1 2 9 3 32 7 1 16 1 27 32 4 3 8 5 5 32 24k Btu h units Model L W W1 W2 W3 W4 H H1 H2 H3 H4 WMMS 24EC V2B 59 2 37 13 32 37 13 32 33 3 32 33 3 32 9 13 32 1 27 32 4 3 8 5 5 32 ...

Page 17: ... Products for A Sustainable and Efficient Green World 17 Wiring Connections WMMS 12EC V2B 59 2 WMMS 18EC V2B 59 2 WMMS 24EC V2B 59 2 Model Power Supply MCA A MOP A WMMS 12EC V2B 59 2 208 230V 1ph 60Hz 1 15 WMMS 18EC V2B 59 2 1 15 WMMS 24EC V2B 59 2 1 15 ...

Page 18: ...Level Flash Light 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 Application Heat Absorption Flux Nitrogen Soap Bubble Vacuum Pump Helium Leakage Check Manifold 3 Electrical Related Installation Wire Cutter Wire Stripper Sharp Plier Cable Ties Black Tape fo...

Page 19: ...rt 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 you are not sure about Get your tools and parts ready and start the installation BASIC REQUIREMENTS FOR THE INSTALLATION LOCATION Choose a location where there are no strong heat sources vapors flamma...

Page 20: ... L 200 4 Washer 10 10 5 Paper template for installation 1 6 Screws 4 ST4 8 13 F Use for Paper pad for installation 7 Heat preservation Sponge for pipe 2 Encase the tie in 8 Big sealing pad 1 5 160 300 9 Sealing pad 1 5 45 300 v 10 Small sealing pad 2 3 30 150 11 Sealing bar 1 120 65 25 12 PVC tape 2 13 Screws 8 ST4 2 9 5PA 14 Remote control 1 For mounting the remote control unit 15 Battery 2 AAA 1...

Page 21: ...ndoor unit and will not increase noise and vibration 4 Select a place easy to drain water and connect with the outdoor unit 5 Make sure there is enough space for maintenance and make sure the distance between the unit and ground is 1 8m or more 6 Make sure the suspension bolt pitch can hold 4 times the weight of the indoor unit otherwise you should strengthen the suspension bolt pitch Notes 1 Keep...

Page 22: ...Use a level or vinyl hose filled with water to adjust the unit to level Tighten the bolts to a secure position INSTALLING DRAIN PIPE Install the drain pipe with a downward gradient 1 50 to 1 100 so there are no rises or traps in the pipe Use general hard polyvinyl chloride pipe VP25 outside diameter 1 1 4 and connect it with adhesive polyvinyl chloride so that there is no leakage When the pipe is ...

Page 23: ...THE GRILLE ASSEMBLY TO THE BODY Install the grille assembly to the body with the four bolts spring washers and washers Wireless unit connection wire wiring 1 Connect the connector in accordance with the part A detail 2 Then clamp the lead wire with clamp so that it does not touch the rotating parts Part A detail view ...

Page 24: ...utward 2 Removing the intake grille 1 Slide the two grille stoppers inward and then open the intake grill 2 Remove the grille hook screws and then open the intake grille 1 The louver angle cannot be changed if the power is not on If moved by hand it may be damaged 2 The grille assembly is directional relative to the air conditioner body 3 Install so that there is no gap between the grille assembly...

Page 25: ...oth inside and outside with refrigerating machine oil and initially tighten by hand 3 or 4 turns Check the pipe connector for gas leaks then insulate it as shown in the drawing below Use sealing pad part 11 to wrap joint between gas pipe and the insulation part 8 The enclosure of the appliance shall be marked by word or by symbols with the direction of the fluid flow Tightening torque table Pipe s...

Page 26: ...wire at both indoor unit and outdoor unit wiring terminal Notes The temperature of refrigerant circuit will be high please keep the interconnection cable away from the copper tube An all pole disconnection device which has at least 3mm separation distance in all pole and a residual current device RCD with the rating of above 10mA shall be incorporated in the fixed wiring according to the national ...

Page 27: ... For the following items take special care during construction and check after installation is finished Items to check If not properly done what is likely to happen Check Is the indoor unit fixed firmly The unit may drop vibrate or make noise Is the gas leak test finished It may result in insufficient cooling Is the unit fully insulated Condensate water may drip Does drainage flow smoothly Condens...

Page 28: ...f iron wire or copper wire may cause the unit to break down or could potentially cause fire Do not check or attempt to repair the unit while it is operating Serious injury or property damage may result Do not use space heaters or other heat sources near the air conditioner It will affect the cooling performance Never place objects near the air intakes or air outlets of the unit It may affect perfo...

Page 29: ...transmitting any noise to walls cabinets etc Pipe length not to exceed 150 feet elevation not to exceed 35 feet Insulate both the liquid and gas copper lines with at least 3 8 inch thick insulation tubes Band tape and secure the refrigerant lines Support copper lines at a proper distance apart to keep the tubes from sagging CUT REFRIGERANT PIPE Make sure where the pipe is to be cut is straight and...

Page 30: ...her damage to it Fix the pipe combination securely on the external wall with proper clamps 6 feet apart Fill the gap between the wall hole and wall sleeve with putty to keep rain or dust entering inside PIPING GUIDE Set the packed pipes in a vertical position and then unwind them slowly Do not unwind only one end of the coiled pipes Use pulley or a bending tool to ensure a safe bending radius Do n...

Page 31: ...vice 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 Vacuum and Check Leakage before Releasing Refrigerant from Outdoor Unit to Indoor Unit For Multi Zone systems repeat this process for each zone with indoor units attached to it If all zones are not bei...

Page 32: ...YMGI Your Modern Green Idea YMGI Engineered Comfort Products for A Sustainable and Efficient Green World 32 ...

Page 33: ...ff in HEAT mode the Indoor Unit will continue to run and blow residual heat out before powering off completely Indoor fan motor will stop when the unit is in DEFROST MODE or the system need to perform an Oil Return function This process takes approximately 3 minutes to complete In the event of a compressor or overheat malfunction the indoor fan motor will continue to run to blow out residual heat ...

Page 34: ...ed will shift every 3 5 minutes Sleep Function In COOLING and FAN modes the SLEEP function works as follows During the 1st Hour the Set Temperature will be allowed to increase 1 F In the 2nd Hour the Temperature will increase 2 F The Indoor unit will remain at that temperature The Temperature will not exceed 86 F even after setting the SLEEP function In HEATING mode the Set Temperature will be all...

Page 35: ...u see the word OFF is not displayed next to the current time on the CLOCK the TIMER OFF function is inactive When both times are set on your REMOTE you will see ON OFF next to the CLOCK on the REMOTE CONTROL display You can set the TIMER ON and TIMER OFF buttons independently If you set the TIMER ON button with no OFF time the Indoor Unit will run until manually turned off If you set the TIMER OFF...

Page 36: ...G Function is turned on while the fan is running on the Indoor Unit Unit Display The Display on the Indoor Unit will only show current settings when the LIGHT function is turned ON If the Indoor Unit shows nothing on the display press the light button to see your current settings COOLING Temperature is indicated and POWER and COOLING icons are lit HEATING Temperature is indicated and POWER and HEA...

Page 37: ...imes Communication malfunction E6 Blink 6 times Defrost or heating oil return H1 Blink once The indoor ambient temperature sensor is open short circuit F1 Blink once Any indoor evaporator temperature sensor is open short circuit F2 Blink twice The outdoor ambient temperature sensor is open short circuit F3 Blink 3 times The outdoor condenser temperature sensor is open short circuit F4 Blink 4 time...

Page 38: ...The distance between signal sender and receiving window should be no more than 8m and there should be no obstacles between them Signal may be experience interference in rooms where there are fluorescent lamps or wireless telephones The remote controller should be kept close to indoor unit during operation Replace new batteries of the same model when replacement is required When you don t use remot...

Page 39: ...remove the two screws Slide both knobs simultaneously towards center as shown and then pull them downward slowly 2 Remove the air filters Slide knobs on the back of the air intake grille outward and remove the air filter Then remove three air filters on it 3 Clean the air filter If filters are not dirty you can just vacuum or wash the air filter with clean water If the air filters are very dirty U...

Page 40: ...ce Attention Do not wash with hot water 5 Replace the air filter 6 Replace the grille 7 Close the suction grille 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 by a fire or open flame as this can be dangerous Always air dry the filters Before Starting the Unit for the First Time in the Season 1 Check to make ...

Page 41: ... the parts that will need to be replaced and bring tools with you for maintenance Step 3 You should not only bring the common tools such as screwdrivers wrenches etc but also you should bring universal meter and ammeter with you 2 During the maintenance take care not to touch any terminals before the voltage between P and N of power module is measured less than 50V to avoid electric shock 3 Before...

Page 42: ...erate when Restart right after stopping Once the unit is stopped it stays idle for about 3 minutes to protect the compressor and the unit from any potential damage Press SET TEMP and then release immediately Power is switched on Wait for 1 minute Mist is emitted When cooling Room air is chilled rapidly and becomes foggy Outdoor unit is hot After the unit is stopped Compressor is emitting heat to g...

Page 43: ...Six times 7 Unit modes conflict Seven times 8 Jumper malfunction Fifteen times 9 Defrosting Heating oil return Blink once 10 Compressor overload protection unit stop Three times 11 System Unit malfunction Four times 12 IPM modular protection unit stop Five times 13 PFC protection unit stop Six times 14 Compressor malfunction Seven times 15 Water spill protection Eight times 16 Indoor ambient temp ...

Page 44: ...E4 5 Over current protection unit stop E5 6 Communication malfunction unit stop E6 7 Unit modes conflict E3 8 Jumper malfunction E3 9 Defrosting Heating oil return Defrost 10 Compressor overload protection unit stop E5 11 System Unit malfunction F2 12 IPM modular protection unit stop E5 13 PFC protection unit stop E5 14 Compressor malfunction E9 15 Water spill protection E9 16 Indoor ambient temp ...

Page 45: ...s H3 Yes E5 11 System is abnormal Blink 4 times H4 No F4 12 Module protection Blink 5 times H5 No E3 13 PFC protection Blink 6 times HC No E5 14 Out of step malfunction of compressor including erase malfunction Blink 7 times H7 No H8 15 Water overflow protection Blink 8 times H8 Yes H8 16 Indoor ambient temperature sensor is open circuit or short circuit Blink once F1 Yes F0 17 Indoor evaporator t...

Page 46: ... connection malfunction at WATER D on main board or the water overflow switch is bad Please check or replace it 3 Indoor ambient temperature sensor is open circuit or short circuit Blink once F1 F0 The temperature sensor at ROOM on indoor main board has malfunction please check or replace it 4 Indoor evaporator temperature sensor is open circuit or short circuit Blink twice F2 F1 The temperature s...

Page 47: ... seen as a unit history No Date Notes Asked Your Technician for Help Contact 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 Name Technician Name Phone HVAC License Job Not Performed by Technician Technician Checklist Completed Fully SERVICE MAINTENANCE NOTES No Date Company Name Technician Name Phone HVAC ...

Page 48: ... 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 and 2x12K Btu h 59 2S DC Inverter Multiple Zone 16 SEER 6x09K to 9x09K Btu h 59 4 DC Inverter Multiple Zone 21 SEER 2x09K to 5x12K Btu h Symphony VRF DC Inverter HP Heat Recovery and Solar Up to 64 z...

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