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YMGI Group
O'Fallon, MO 63366, USA
Tel: (866)833-3138 Fax: (866)377-3355
Web Site: www.ymgigroup.com
Email: info@ymgigroup.com
YMGI, Engineered HVAC & R Products for Maximum Green World and Better Tomorrow
Literature Part No.: LIT-WMMS-(59)2-EC-DC IVTR-II-20131130
For Ceiling Cassette Styles-59, 12 to 24K Btu/h Cooling and Heat Pump
This Manual is Subject to Change to Reflect Our Continuous Effort for Engineering Improvement without Prior Notice.
YMGI is the Trademark and Property of YMGI Group. Copyright of YMGI Group 2013.
POB 1559
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
INSTALLER'S INSTRUCTION & USER'S MANUAL
DC INVERTER MULTIPLE ZONE (59)2
SYMPHONY CHOIR
INDOOR UNIT-CEILING CASSETTE (EC)
WMMS-12EC-V2B(59) (2)
WMMS-18EC-V2B(59) (2)
This product is designed and manufactured free from defects in material and workmanship under the normal use and
maintenance. Installation, operation, maintenance and service shall follow or Local Codes and related manuals from us.
Otherwise, damage to equipment or property even injury to people may occur.
Installer: Read this instruction manual before installation. Remember to complete in full the warranty cardon the back
of this manual warranty card.
User: Keep this instruction manual for future maintenance and service use.
Servicer: Use this instruction manual for service reference.
WMMS-24EC-V2B(59) (2)
LITERATURE: LIT-WMMS-(59) (2)-EC-DC IVTR-II-20131130
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Table of Contents
Related Manuals for MG WMMS-12EC-V2B(59)
Summary of Contents for MG WMMS-12EC-V2B(59)
- Page 1 YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World ! INSTALLER'S INSTRUCTION & USER'S MANUAL DC INVERTER MULTIPLE ZONE (59)2 SYMPHONY CHOIR INDOOR UNIT-CEILING CASSETTE (EC) WMMS-12EC-V2B(59) (2) WMMS-24EC-V2B(59) (2) WMMS-18EC-V2B(59) (2) YMGI Group POB 1559 O'Fallon, MO 63366, USA Tel: (866)833-3138 Fax: (866)377-3355 Web Site: www.ymgigroup.com This product is designed and manufactured free from defects in material and workmanship under the normal use and...
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Page 2: Table Of Contents
CONTENTS WELCOME AND PLEASE READ THROUGH MANUALS Dear Customer(s)/end User(s)/unit Purchaser(s)/installer(s)/Contractor(s): WELCOME AND PLEASE READ THROUGH MANUALS INSTALLING TECHNICIAN/CONTRACTOR'S JOBS AND RESPONSIBILITIES Thanks for choosing YMGI products. The YMGI equipment you purchased is either a split-type or a self-contained cooling/heating system which LIMITED PRODUCT WARRANTY POLICIES requires an installer's license, certification, knowledge, experience, carefulness and details for a successful and LIMITED PRODUCT WARRANTY REGISTRATION CARD... -
Page 3: Welcome And Please Read Through Manuals
WELCOME AND PLEASE READ THROUGH MANUALS INSTALLING TECHNICIAN/CONTRACTOR'S JOBS AND RESPONSIBILITIES 1) Check with the customers to find out detailed information of structure to be conditioned, local weather (typical design and ATTENTIONS extreme temperature/humidity conditions, cooling and heating hours), previous and existing HVAC equipment, usage and dependence on the new HVAC equipment or the YMGI products. -
Page 4: Limited Product Warranty Policies
LIMITED PRODUCT WARRANTY POLICIES LIMITED PRODUCT WARRANTY REGISTRATION CARD The YMGI products are designed and manufactured free from defects in workmanship, and materials for normal LIMITED PRODUCT WARRANTY use. However, for any reason, including many handlings and occasions between the YMGI factories/warehouses and where you receive the products, the unit doesn't work, YMGI Group will help to remedy the occurrence in the REGISTRATION CARD / FORM following warranting ways:... -
Page 5: Warranty And Tech. Support
WARRANTY AND TECH. SUPPORT INTRODUCTION YMGI warrants to the purchaser/owner(s) that YMGI products be free from defects in material and Ceiling Mount Cassette Systems are designed for high performance, easy installation and service. Each system workmanship under the normal use and maintenance, with the standard Limited Product Warranty consists of one or several indoor units and one outdoor unit, which are connected by one set or several sets of Policies that comes with the unit or sales package. -
Page 6: Names Of Parts
NAMES OF PARTS UNIT SPECIFICATIONS Items Unit / Conditions WMMS-12EC-V2B(59)2 WMMS-18EC-V2B(59)2 WMMS-24EC-V2B(59)2 Voltage/Ph/Hz 208-230/1/60 208-230/1/60 208-230/1/60 Power Supply Allowed Voltage Range 187-253V 187-253V 187-253V Cooling Capacity (Btu/h) High/Standard/Low 13900/12000/5200 20800/17200/6200 26500/22800/9600 ID 70/60, OD 47/43F 13000 18100 27400 Heating Capacity (Btu/h) -
Page 7: Recommended Tools For Installation
RECOMMENDED TOOLS FOR INSTALLATION INSTALLATION NOTES 1) Mounting Indoor & Outdoor Location Noise Units and Running Piping/Wiring * The air conditioner must be firmly installed and 3~ * Select a place with good ventilation or it may Ruler (Not Shown) 4 liability checks must be done every year. -
Page 8: Installation Accessories
INSTALLATION ACCESSORIES INDOOR UNIT INSTALLATION LOCATION Shape Quantity Name Notes 1) Do not place object near the air outlet so that conditioned air can reach the whole room. Drainage hose For indoor side pipe joint 2) Be sure to install the indoor unit firmly and horizontly. 3) Select a place that can support 4 times the weight of the indoor unit and will not increase noise and vibration. - Page 9 INDOOR UNIT INSTALLATION INDOOR UNIT INSTALLATION HANGING PREPARATIONS BOLTING THE GRILLE ASSEMBLY TO THE BODY Special nut A (1) Install special nut A, then special nut B onto the Install the grille assembly to the body Wireless unit connection wire wiring hanging bolt.
- Page 10 INDOOR UNIT INSTALLATION INDOOR UNIT INSTALLATION 2.Removing the intake grille (3) Open the intake grille so that it is at an angle of Tightening torque table: 20 to 40 ,and then remove the grille. (1) Slide the two grille stoppers inward, and then Pipe size Tightening torque (N·m) Pipe size...
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Page 11: Wiring Diagrams
Fuse on PCB (Condensate water) HOW TO CONNECT WIRING TO THE TERMINALS WMMS-12EC-V2B(59)2, WMMS-18EC-V2B(59)2 A. For solid core wiring (or F-cable) (1) Cut the wire end with wire cutters, then strip the insulation about 15/16" (25mm) to expose the solid wire. -
Page 12: Test And Check Items After Installation
TEST AND CHECK ITEMS AFTER INSTALLATION SAFETY CAUTIONS TEST OPERATION READ THE FOLLOWING CAREFULLY BEFORE OPERATION 1. Prepare for test WARNING (1) Do not turn on the power switch before all installation is finsihed. Avoid direct air flow to your body and avoid Check whether the (2) Connect wires correctly and firmly. - Page 13 REMOTE CONTROL-KEY NAMES & FUNCTIONS REMOTE CONTROL-KEY NAMES & FUNCTIONS "FAN" BUTTON: By pressing this button you can "CLOCK" BUTTON: The time function runs on a 24 NOTE1: This is a general use remote control and can be used for numerous air conditioner styles and models. hour clock.
- Page 14 REMOTE CONTROL-KEY NAMES & FUNCTIONS REMOTE CONTROL-KEY NAMES & FUNCTIONS "SWING" BUTTON: Hold the swing button (symbol SYMBOL DISPLAY IR Control Signal Transmitting "SWING UP AND DOWN" BUTTON shown above) for more than 2 seconds and the When power is first applied to the unit but the power Press this button, to set up swing angle, which indoor air louver will start to swing between the...
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Page 15: Optimum Operation
OPTIMUM OPERATION TROUBLE SHOOTING GENERAL PROCEDURES Adjust the room temperature properly Notice Adjust the room temperature properly for a 1) Preparation before service comfortable environment. Step 1: Firstly, confirm the model of the inverter A/C which needs repairing, and then find out model of main parts that can be damaged easily and the material encode, especially the controller of outdoor unit;... - Page 16 TROUBLE SHOOTING TROUBLE SHOOTING Warning NORMAL OCCURRENCE * In case of something abnormal (such as bad smell), shut off the power switch immediately and contact service center. When normal Cause and remedy of normal Normal Occurrence * Do not repair the unit by yourself. Incorrect service may cause fire, please contact service center. occurrence happens occurrence * The appliance should not be used by children without supervision.
- Page 17 TROUBLE SHOOTING TROUBLE SHOOTING ERROR OR PROTECTION CODE INDICATION When the unit is controlled by wire controller, error or protection codes are as follows: Code indication Meaning LED Indication on display Error or protection codes LED (red) LED (yellow) LED (green) Compressor high pressure protection unit stop Compressor high pressure protection unit stop Blink once...
- Page 18 TROUBLE SHOOTING TROUBLE SHOOTING ERROR CODE LIST TROUBLESHOOTING When there's malfunction or protection, the display screen of indoor unit or LED will display corresponding code Red light Yellow light Green light Display of wire Floor Display of and LED on main board of outdoor unit will also have warnings. Please refer to the function parts as before for Malfunction name (running (heating...
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Page 19: Care And Maintenance
CARE AND MAINTENANCE CARE AND MAINTENANCE How to Clean the Air intake WARNING 1) Open the air intake grille. See step 1 of "How to Clean the Air Filter" Pull out the power plug before cleaning Do not splash water directly to the unit 2) Remove the air filters. -
Page 20: Customer And Technician Must Read
CUSTOMER AND TECHNICIAN MUST READ CUSTOMER AND TECHNICIAN MUST READ 11) If all the suggestions have been taken and all the necessary steps are followed. WHY DOES YMGI GROUP REQUIRE INSTALLATION AND SERVICE TO BE 12) If the contractor(s)/technician(s) are experienced with the systems/brands you purchase. 100% PERFORMED BY LICENSED OR CERTIFIED HVAC TECHNICIAN/ You might spend less. - Page 21 CUSTOMER AND TECHNICIAN MUST READ CUSTOMER AND TECHNICIAN MUST READ C. YMGI must verify the following before you can pack your products: Some DIY installations have been successful, but these are exceptions. Most have resulted in equipment failure, 1) No products (units, parts, accessories) are missing. due to lack of knowledge and experience.
- Page 22 CUSTOMER AND TECHNICIAN MUST READ CUSTOMER AND TECHNICIAN MUST READ DEFECTIVE UNITS / PARTS / ACCESSORIES-REPAIR OR REPLACEMENT Standard factory warranty does not cover the cost of materials and labor that are incurred at your site. Out of thousands of units sold every year, there may be an occasional instance your product does not operate There will be no cost for the replacement unit, if YMGI determines the defect is manufacturer related.
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Page 23: User Notes And Installation/Service/Maintenance Notes
USER NOTES AND INSTALLATION/SERVICE/MAINTENANCE NOTES USER NOTES Put down whatever questions you have or problems you have seen as a unit history: Date Asked for Your Technician for Help? Did You Ask YMGI Tech. for Help? Notes INSTALLATION NOTES Put down whatever questions you have or problems you have seen as a unit history: Original Installation Company Job Not Performed Technician Checklist...
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