YMGI WMMS-09EW-V2B(59)4 Installer's Instruction & User's Manual
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YMGI WMMS-09EW-V2B(59)4 Installer's Instruction & User's Manual

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INSTALLER'S INSTRUCTION & USER'S MANUAL
DC INVERTER MULTIPLE ZONE (59)4 EW
SYMPHONY CHOIR INDOOR UNIT-WALL MOUNT
WMMS-09EW-V2B(59)4
WMMS-18EW-V2B(59)4
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.
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.
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 equipment,
observe all precautions in the provided documents, on the tags, stickers, and labels that are attached to or placed on the equipment.
YMGI, Engineered Comfort Products for A Sustainable
SAFETY WARNING
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
and Efficient Green World!
WMMS-12EW-V2B(59)4
WMMS-24EW-V2B(59)4
NOTICE
1

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

  • Page 1 WMMS-24EW-V2B(59)4 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.

  • Page 2: Table Of Contents

    Limited Product Warranty ........................8 Limited Product Warranty Registration Card .................... 9 Why Does YMGI Group Require Installation and Service to Be Performed 100% By Currently Licensed or Certified HVAC Technicians/Contractors ..........10 Suggestions to Aid You in Hiring an HVAC Contractor ................10 Safety Precautions ..........................

  • Page 3: Introduction

    Refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs), may affect the ozone layer. Not all refrigerants have the same potential impact on the environment. YMGI Group advocates for the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs.
  • Page 4 This document and the information contained therein are the sole property of YMGI Group and shall not be used or reproduced in whole or in part, without the written permission of YMGI Group. YMGI Group reserves the right to revise this manual at any time and to make changes to its content without obligation to notify anyone about any modifications, revisions or changes.

  • Page 5: Note From Ymgi - Must Read

    YMGI Group is the MEDIA AUTHORITY: YMGI Group, located in O'Fallon, MO 63366 is the author of all media produced for its products and is the only party able to give any additional explanation for any data, definitions and or descriptions found within any of its media, including but not limited to YMGI product brochures, manuals, pamphlets, catalogs, and videos.
  • Page 6 In an effort to help protect our customers from possible faulty installations that can lead to premature unit failure, YMGI provides the above information for you and the technician. You can observe while your system is being installed, even though your observation is not a guarantee your system is being or has been installed properly and professionally.

  • Page 7: Installing Technician/Contractor's Responsibilities

    You will be solely responsible for the entire installation that you have been contracted. Make sure you have all the materials you need to properly, completely and correctly finish the installation. The YMGI units and accessories may be just a portion of what you will need for the project. When support issues arise, remember YMGI employees and YMGI distributors/sales, dealers and agents are not installers and may only provide suggestions.

  • Page 8: Limited Product Warranty

    Compressor: YMGI will warrant the compressor of a YMGI-validated and approved warranty filing, for a period of 5 years from the date of successful installation at its original installation location. Parts: YMGI will warrant parts of a YMGI-validated and approved warranty filing, for one year from the date of successful installation at original installation location.
  • Page 9 YMGI Technical support the exact part(s) needed to fix the problem(s). 2. YMGI will check the customer's warranty filing. There will be no charge for Parts with a validated and approved warranty. Any Parts that have not been validated and approved or have an invalid warranty filing resulting in an unapproved warranty request, will be charged accordingly.
  • Page 10 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 11: Why Does Ymgi Group Require Installation And Service To Be Performed 100% By Currently Licensed Or Certified Hvac Technicians/Contractors

    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.

  • Page 12: Safety Precautions

    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.
  • Page 13 YMGI Group will not be responsible for any personal injury or any property damage caused by improper or incorrect installation, improper service or maintenance or by not following the instructions listed in this manual. DO NOT pull on the power supply cords or refrigeration lines that are connected to the indoor and outdoor units.

  • Page 14: Indoor Unit Diagram

    Outdoor Side Condition Dry Bulb Temp Wet Bulb Temp Dry Bulb Temp Wet Bulb Temp C°(F°) C°(F°) C°(F°) C°(F°) Rated Cooling 27(80.6) 19(66.2) 35(95) 24(75.2) Rated Heating 20(68.0) 15(59.0) 7(44.6) 6(42.8) YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 15: Specification Sheet

    36.1 x 14.3 x 10.9 40.9 x 15.0 x 12.0 45.0 x 16.1 x 13.2 Net (LBs) 22.0 22.0 27.6 34.2 Unit Weight Packaged (LBs) 26.5 26.5 34.4 41.9 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 16 UNIT DIMENSIONS Model inches inches inches WMMS-09EW-V2B(59)4 33.4 11.4 WMMS-12EW-V2B(59)4 WMMS-18EW-V2B(59)4 38.2 11.8 WMMS-24EW-V2B(59)4 42.4 12.8 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 17 Electrical Installation Model Power Supply MCA(A) MOP(A) WMMS-09EW-V2B(59)4 WMMS-12EW-V2B(59)4 208/230V-1ph-60Hz WMMS-18EW-V2B(59)4 WMMS-24EW-V2B(59)4 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 18: Recommended Tools For Installation

    3. Electrical Related Installation Wire Cutter Wire Stripper Sharp Plier Cable Ties Black Tape for Electrical Use Electrical Meter 4. Trial Running Units and Inspection Clamp Meter Manifold Infrared Thermometer YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 19: System Layout & Installation Clearance

    SYSTEM LAYOUT & INSTALLATION CLEARANCE YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 20 SYSTEM LAYOUT & INSTALLATION CLEARANCE YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 21 SYSTEM LAYOUT & INSTALLATION CLEARANCE SYSTEM LAYOUT & INSTALLATION CLEARANCE YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 22: Installation-Location Selections

    INSTALLATION LOCATION SELECTION YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 23 Check to be sure you have all the additional parts and accessories that are required for the installation and those provided with the unit.  It is strongly recommended to only use YMGI supplied or approved parts and accessories.  Be sure a properly sized circuit breaker is installed for the electric power suppling the units.
  • Page 24 Install the indoor unit. Use enough anchor bolts to secure the mounting plates to the wall for indoor units. The mounting plate should be level and secure and ready to receive the indoor unit. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 25: Installation-Indoor Units

    Drill the holes of 2.5 – 3 Inches in diameter. A down pitch of • about 1/4 inch per foot, as illustrated, is needed for the hole, to drain the condensate properly. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 26 (place the hook on the mounting plate into the hanging rib at rear side of plastic casing).  Snap the plastic casing bottom into the mounting plate, gently. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 27: Connect Refrigerant Pipes Between Indoor And Outdoor Units

    31 – 60 ft. Liquid Gas 1/4”, 3/8” 1/4”, 3/8” 1/4”, 3/8” 1/4”, 3/8” 1/4”, 3/8” 1/4”, 3/8” 1/4”, 1/2” 1/4”, 1/2” 1/4”, 1/2” 1/4”, 5/8” 1/4”, 5/8” 3/8”, 5/8” YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 28 Too much torque may damage and break the flare/nut seal. Too little torque may not ensure a good seal. ALWAYS use a pair of wrenches when tightening. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 29 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. • YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 30: Piping Guide

    Use an elbow tool for Do not make bends that are consistent bending radius. less than 90 degrees. Maintain the minimum Do not bend shot pipes. bending radius. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 31: Operation In An Emergency

    (COOL, HEAT, FAN) mode automatically, to obtain the correct setting. Stopping: When the unit is running, adjusts the code switch to the STOP position, the unit will stop working. • YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 32 Buttons on Remote Controller Introduction for icons on display screen YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 33 To prevent cold air from blowing, after starting up heating mode, indoor unit will delay 1~5 minutes before blowing air (actual delay time is depend on indoor ambient temperature).  °F Set temperature range available on the remote controller is 61~86 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 34 TIMER ON, TIMER OFF buttons) When setting TIMER ON, TIMER OFF or CLOCK, press " " or " " button to adjust time. (Refer to CLOCK, TIMER ON, TIMER OFF buttons) YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 35 Clock time adopts 24-hour mode.  The interval between two operations cannot exceeds 5s. Otherwise, remote controller will quit setting status. Operation for TIMER ON/TIMER OFF is the same. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 36 If sleep function has been set under cooling mode, start up the 8 °C heating function will cancel sleep function.  Under °F temperature display, the remote controller will display 46 °F heating. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 37 " icon will blink three times without sending signal to the unit. Temperature display switchover function Under OFF status, press " " and "MODE" buttons simultaneously to switch temperature display between °C °F YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 38: Operation Guide

    Leaving the batteries in could cause them to leak. This will cause damage to the remote control. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 39: Cleaning And Care

    Reinstall front panel Place two supports of the front panel into the slots, along the direction of arrows to cover and clasp the front panel. As show in figure. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 40 1. Turn main power off, by disconnecting electrical power disconnect switch. 2. Clean filter and unit. 3. Cover the unit to keep dust or moisture out of the unit. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 41: Protection Signs And Error Codes

    Problem Handling The conditions listed below are not classified into errors. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 42 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 for more details about the meaning of each error YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 43 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 44 The words in gray means the corresponding function is unavailable. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 45: Checking Units Prior To Contacting Your Technician

    5) Is the fuse on indoor unit blown? 6) Is the indoor unit powered on? 7) Is the indoor unit transformer good? 8) Is the indoor unit control board good? YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 46 4. Circuit breaker trips or fuse is blown a few times; 5. Wires or connections are very hot; 6. Oil or refrigerant leakage is found; 7. Unit vibrates abnormally; 8. Any other abnormal situations. YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!

  • Page 47: User Notes And Installation/Service/Maintenance Notes

    Name, Phone & HCAC License # by Technician Completed Fully? SERVICE / MAINTENANCE NOTES Technician’s Company Name, Technician Date Contents of Service / Maintenance Name, Phone & HCAC License # YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
  • Page 48 YMGI is dedicated to designing, manufacturing and distributing the highest quality, energy saving and environmentally friendly air conditioner and heat pump products, while providing the best service and support to all of our customers. Our mission is to help build a sustainable, efficient and green world.

This manual is also suitable for:

Wmms-12ew-v2b(59)4Wmms-18ew-v2b(59)4Wmms-24ew-v2b(59)4

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