YMGI WMMS-09K-31A Installation & Service Manual

Wall mount mini split systems single-zone cooling and heat pump w or w/o heater

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Literature Part No: Lit-WMMS-0103-20100814
For WMMS Series of Product 09 to 60K Btu/h Single-Zone (Cooling, Heat Pump W or W/O Ele. Heater)
Subject to Continuous Engineering Improvement without Prior Notice.
YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR...
INSTALLATION & SERVICE MANUAL
Wall Mount Mini Split Systems
Single-Zone
Cooling and Heat Pump W or W/O Heater
(This Installation Instruction is Good for Mini Split Wall Mount Product Line of Different Brands
Made by YMGI Group-YMGI, YMGI Products, and Others Claimed by YMGI Group,
POB 1559, O'Fallon, MO, USA-Check with info@ymgigroup.com or sales@ymgigroup.com)
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 professional practices for regular cooling and
heating equipment, NEC, State, City or Local Codes and related manuals from us. Otherwise, damage to equipment or
property even injury to people may occur.
Installer: Currently licensed HVAC installer only, Read this manual before installation. Sign on the warranty registration card.
User: Keep this manual for future maintenance and service use.
Servicer: Use this manual for service reference.
M3
Literature Part No: LIT-WMMS-II-0103-20100814

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Summary of Contents for YMGI WMMS-09K-31A

  • Page 1 Cooling and Heat Pump W or W/O Heater (This Installation Instruction is Good for Mini Split Wall Mount Product Line of Different Brands Made by YMGI Group-YMGI, YMGI Products, and Others Claimed by YMGI Group, POB 1559, O'Fallon, MO, USA-Check with info@ymgigroup.com or sales@ymgigroup.com) This product is designed and manufactured free from defects in material and workmanship under the normal use and maintenance.
  • Page 2: Table Of Contents

    8. IT IS THE INSTALLATION CONTRACTOR'S RESPONSIBILITY TO INSTALL AND SERVICE THE SYSTEM SYSTEM INSPECTION AND TRIAL RUNNING TO MAKE SURE THE UNIT WORK CORRECTLY AND PROPERLY OVER THE TIME. YMGI DOESN'T CHECK AFTER INSTALLATION AND TEST OPERATION DURING INSTALLATION INSTALL NOR SERVICE YOUR UNITS ON BEHALF OF THE INSTALLER.
  • Page 3: Before Installation Identify Components

    Air Outlet Unit Appearance and Specifications Are Subject to Change for Continuous Improvement without Any Prior Notice. YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P3 OF 34...
  • Page 4: Connection Of Wires

    Power and control and or intercommunication cable Foot rise or brackets for outdoor unit Line set covers Wind baffie YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P5 OF 34 P6 OF 34...
  • Page 5: Operating Temperature Ranges

    Not Cold Too Hot Not Hot Test/Reset Switch Remote Control (or Optional Wall Thermostat) YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P7 OF 34 P8 OF 34...
  • Page 6: Remote Control

    RUN/STOP BUTTON LIGHT WAVE BUTTON AUTO CLEAR BUTTON ELECTRIC HEATING BUTTON FRESH AIR BUTTON YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P9 OF 34 P10 OF 34...
  • Page 7: Brief Introduction To Mini Split Wall Mount System

    Opening a door or prolonged periods where humidity is higher than 80%. window periodically will suffice. YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P11 OF 34...
  • Page 8 YMGI is NOT and shall NOT be responsible for any problems due to customer do it yourself(DIY) installation, * YMGI doesn’t allow nor recommend nor honor warranty for DIY installation. Customers take full responsibility non-licensed installation, and other unprofessional, incorrect, incomplete installation, abuse to the unit, or for DIY installation.
  • Page 9: Important Notes For Unit Operation Abmient & Sizing

    2 C once more. The unit will then continue operating at 39 C below the set temperature. 5) Capacities and efficiency decrease, as outdoor temperature drops. YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR...
  • Page 10: Introduction

    Check all the parts and accessories that are needed other than those provided with the unit. It is strongly recommended to only use YMGI supplied or recommended parts and accessories. Be sure a properly sized circuit breaker is for the electric power to the units.
  • Page 11: Installation Positions For Outdoor Unit

    If pipes need to come out of the left side (facing the front of indoor unit) of the indoor unit, snap off portion 3 on plastic casing. YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P19 OF 34...
  • Page 12 Sealed with putty pipe at specified position. Secure the piping/ wiring set with clamp YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P21 OF 34 P22 OF 34...
  • Page 13: Installation-Outdoor Unit

    Suggest to use YMGI-provided brackets and condensate drainage fitting accessories. OUTDOOR WIRING: OUTDOOR-INDOOR UNIT & DISCONNECT SWITCH BOX/CIRCUIT BREAKER/FUSE Remove the wiring diagram cover where also the handle for moving unit is located.
  • Page 14: Connect Refrigerant Pipes Between Indoor And Outdoor Units

    YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR...
  • Page 15: Installation Accessories

    R410A refrigerant bears higher pressures than R22. Only handled by Licensed HVAC technician. RIST-0912-PVC 14.2 09K-18K RIST-1860-PVC 17.7 18K-60K YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... P27 OF 34 P28 OF 34...
  • Page 16: Check After Installation And Test Operation

    * Drainage (condensate/water flow should be dripping out of drainage pipe ONLY). * Noise (there should be no abnormal symbol) YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR... YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR...
  • Page 17: User Notes And Service Log

    Currently Validly Licensed HVAC Technician Company, within 7 calendar days after the original installation is finished or your NEW home (unit is not checked or used yet) is closed, whichever comes later, by the owner(s) to Warranty Department, YMGI...
  • Page 18: Warranty And Tech. Support

    WARRANTY AND TECH. SUPPORT USER NOTES AND SERVICE LOG YMGI warrants to the purchaser/owner(s) that YMGI products be free from defects in material and USER NOTES workmanship under the normal use and maintenance, with the standard Limited Product Warranty Put down whatever questions you have or problems you have seen as a unit history: Policies that comes with the unit or sales package.

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