YMGI WMMS-09E-V2A(57)2 Installer's Instruction & User's Manual page 4

Copyright
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.

Instructions for installation and use of this product are provided by the manufacturer.

Installation must be performed by authorized and licensed personnel only and in accordance with all the requirements
of this manual, the NEC, CEC and any state and local codes.

For safe operation of this unit, please read and follow all instructions carefully.

The total operation capacity of the indoor units should not exceed 120% of the total capacity of the outdoor units if all
indoor units must operate at their peak capacities all the time. Otherwise, the heating and cooling operation will be
diminished and less efficient which could damage the units.

Any person responsible for system operation or system maintenance should retain this manual for reference.

If the unit fails to operate normally, please contact your authorized 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).
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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 system installer or HVAC professional as they have the experience and training
necessary to perform this task.
Note: Each unit has been thoroughly tested to ensure it operates correctly before leaving the factory.
Basic Cautions and Warnings
All units shall be installed by an experienced HVAC licensed contractor or technician. Read all manuals before installation,
startup and operation.
All NEC, state, local codes and installation instructions must be followed for all units, otherwise, the unit warranty will be
void and could result in serious damage to people or property.
YMGI Group is not responsible for any damage or loss due to Do-It-Yourself (DIY), self-installation or any improper
installation, improper operation, improper service or natural disasters of any kind.
Do not connect power to the unit until all wiring, tubing and all unit inspections and testing have been completed. Ground
the unit according to the instructions and adhering to NEC, state and local codes.
All wiring connections must be correct and secure. Loose wire(s) or improper contacts may cause arcs or overheating
which can result in a fire hazard.
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