Unit installation
Table Of Contents

P7 OF 38
IMPORTANT NOTES
YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR...
P8 OF 38
YMGI, A COMFORT MAKER, A JOY COMPANION, A SATISFACTION GUARANTOR...
By Placing Order and Pay to Purchase Our Products from the Authorized Distributors, or by Opening the
Carton Box, You Shall Have Read All Manuals and Instructions and Understood and Accepted and
Agreed to All the Following:
What You Will Need to Do at Receiving the
Products
Shall Check the Delivery Against the Order and Packing
List to Make Sure There is No Unit/Part/Accessory Missing
or Damage.
Shall Mark Any Unit and Part and Accessory Missing on
the Delivery Confirmation Paperwork.
Shall Report Any Freight Damage to the Carrier within 24
Hours as of Delivery.
Shall Report Any Unit and Part and Accessory Missing or
Damage to Sales/Customer Service within 24 hours as of
Delivery.
No Report after 24 Hours as of Delivery, Meaning
Units/Parts/Accessories Have Been Delivered Completely
and No Damage is Found.
What You Will Accept before Breaking the Box
Seal and Opening the Box
Due to Continuous Product/Engineering Improvement, as
Well as Viewing Angles and Background Affects, the
Contained Unit May Look Slightly Differently from What is
Shown on the Carton Box or Spec. Brochures.
The Units Were Manufactured Some Time Prior to the
Shipping Date. Normally The Box is Sealed and The
Units/Parts Contained Are New and Have not Been Used.
For Time to Time, Shipper Does Select Boxes Randomly to
Check the Contained Units/Parts to Make Sure Everything
Be All Right, before Shipping. But, All Units/Parts Have not
Been Used.
The Product is Designed and Manufactured and Tested to
Be Free of Defective at Manufacturer Plants, but if the Unit
will Work or Not, Will Work Properly or Not, Only Depends
upon Many other Factors, Especially the Quality of
Installation. Anything Not Working May Not be the Product
Itself. Which Could be Power Failure, Insufficient or Wrong
Wiring, Not Vacuuming, Pipe Bending or Kinking or
Leaking, Unit/Parts Dropping, Water Damage, and So on.
If the product, for Some Uncontrolled Factors During
Transportation and Installation, Doesn't Function Properly
or Timely Due to Unexpected Failure, You Agree to Have
the Licensed Installer (HVAC or Electrician), instead of
Yourself, Call the Manufacturer Technical Support and/or
Customer Service to Walk through Some Technical Steps
Together, In Order to Find Out the Failure Reason and
What Parts Are Needed. All the Effort is To Limit the
Problems and Make the Unit Work for You As Soon As
Possible and There Will Be No Extra Charge.
What You Needs to Pay Attention to Installation
Understand to Save on Something but Not Everything.
In Order to Ensure Installation Quality and Validate the
Factory Warranty, Must Hire Licensed HVAC Technician to
Conduct Electricity and Refrigerant-Related Installation
and Trouble-Shooting Work and Follow Related
Local/DOE/EPA Codes and Laws.
Shall Contact Your Licensed HVAC Technician to
Determine What Portion Can be Done Do-it-Yourself (DIY)
and Save Some Money. DIY Installation Varies Upon Many
Factors. DIY Installation May Succeed, but May Be Taking
Chance and/or Running DIY
Will Not Pay your Technician in Full, Until at Least 30 Days
after All Installation is Finished and Unit(s) Work Properly.
What You Need to Know During Installation or
Operation
Cover the Interconnecting Pipes Before Pulling through
Structures, to Keep from Dust, Debris and Other Foreign
Substances Entering and Damaging the Refrigeration
System.
Vacuum and Conduct Leakage Check for the
Interconnecting Pipes and Indoor Unit. If There is Any
Leakage, Need to Find it and Fix It.
Must Make Sure the System is Sealed Tight without Any
Leakage Potential, before Releasing Refrigerant from the
Condensing Unit to the Interconnecting Pipes and Indoor
Unit.
For Technical Questions, In Order to Help You Out Timely,
You Shall Have the Licensed Technician/Installer, Instead
of Yourself, Check What is Going on before Talking to the
Sales Distributor and/or Manufacturer Technical Support
from Your Job Site.
For Product Pricing and Product Availability, You Shall Talk
with Sales.
For How to Use the Unit or Need Any Parts, You Shall
Read the Manuals or Go Online or Contact Your
Sales/Customer Service at Distributor, if Not Available, then
Contact Customer Service/Support at Manufacturer, via the
Contact Information Printed in the Manual and/or Unit.
What You Need to Know Before Your Contractor/
Technician Finishes the Installation
Witness the Contractor/Technician to Check the System
Thoroughly and All Functions and Make Sure All Are Good.
Have the Contractor/Technician Sign on the Paperwork.
Don't Pay to the Contractor/Technician in Full Until the
Whole System Works Smoothly Fine without Any Problem
for at Least 30 Days.
Tell the Contractor/Technician that They Need to Come to
the Job Site to Check the System, if There is Anything Not
Right.
Tell the Contractor/Technician that They, not the
Customer/End User, Will be the One to Talk to the
Technical Support, Technically, if There is Anything Not
Right.
What You Need to Know about Warranty
If the Units are Installed Properly, Following Manufacturer
Instructions, by Licensed HVAC Technician, the Units are
Covered with a Standard Warranty which Covers 5-year
Compressor and 1-year Other Parts Only.
In Standard Warranty, No Labor is Included.
Extended Warranty shall be Purchased at Original Unit
Ordering, at Extra Cost to Cover More Years of Parts
and/or Labor.
Units/Parts Shipping is Ground Only. Expedited Express
Shipping Shall be Requested in Writing at Extra Cost.
Decision Maker's Own Risks and Is NOT Guaranteed and
Endorsed by the Manufacturer.
NOTES FOR REFRIGERANT RELATED HVAC PRODUCTS, SPECIFICALLY THE SPLIT TYPE
SAFETY CAUTIONS AND ALERTS
Installation, Operation, Maintenance, and Service shall follow professional standards and practices for
conventional cooling and heating equipment, under International, National, State, City or Local Codes, and follow
guidelines listed in all related manuals and associated product information provided directly, from YMGI. Failure
to adhere to proper Installation, Operation, Maintenance, and Service could result in unit malfunction damage to
equipment, personal property, or physical injury, or even death, which YMGI is not responsible for.
Installation must be performed following the
YMGI Installation/Maintenance Manuals.
Installation must be performed by a certified
technical installer only. DO NOT attempt to install
the unit by yourself trying to save money. Do-It-
Yourself (DIY) installation will void YMGI provided
warranty and could result in injury or death, or
property damage due to fire, electrical shock, leaking,
collapsing, which YMGI is not responsible for.
Install the unit onto a strong load bearing
structure. The location must be capable of handling
the weight load of the unit to prevent the unit from
falling or causing injury. Attach both the indoor and
outdoor units to the brackets that are fixed to the
right position securely.
Only use manufacturer specified and codes
allowed wires and conduits to connect to the
units so the stress is not applied to the sections.
Incomplete connecting and insecure fixing could
cause fire or damage.
Wiring must conform to national regulations.
Failure to adhere to these standards could result in
personal injury or death or property damage due to
fire, electrical shock, falling units, or leaking.
Connect the power cord directly to a designated
and exclusive AC Power Circuit Breaker and or
Disconnect Switch. The circuit must exceed
permissible currents and is free of insulation and
contact defects. Shall refrain from intermediate or
multiple connections to avoid fire or electric shock.
DO NOT supply power until all wiring and tubing
is checked completely.
Double check for gas leaks during or after
installation. The refrigerant gas may cause harmful
substances when subjected to heat or fire.
Refrigerant leakage will cause unit not to generate
enough cooling or heating and even damage
compressors and other parts.
Shut off the main power prior to and during
installation to avoid electrical shock. Make sure
that the electrical power is disconnected from the
unit by making a notice or put a sign at the power
switch panel, to keep other people from setting the
power back during installation.
Connect all wiring securely. Any loose wire or other
bad contact may cause an electrical arc, overheating,
or fire hazard. Make sure that the unit is grounded
following YMGI Instructions and NEC, International,
State, City, and Local Codes. Electrical cover shall be
securely attached to the indoor and outdoor unit
service panels, otherwise, could result in fire or
electric shock due to accumulation of dust, sediments,
water, moisture, etc.
Only use authorized YMGI parts in the
installation, maintenance, service, and repair of
YMGI units. The use of non-authorized or
defective parts will void the warranty and could
cause injury or death or property damage due to
water leakage, falling units, fire, electric shock, etc.
Pay extreme caution to interconnecting
refrigerant copper tubing, when installing or
relocating the unit. Make sure that no other
substance than the specified refrigerant enters the
refrigeration circuit. Any presence of foreign
substances such as air or water or moisture can
cause an abnormal pressure rise or overheat, which
will result in an inefficient unit performance or unit
malfunctions, and will shorten unit lifetime.
Pay extreme caution to interconnecting
refrigerant copper tubing when installing or
relocating split system, as applicable.
1) Make sure that no substance other than the
specified refrigerant enters the refrigeration circuit.
Any presence of foreign substances such as air or
water or moisture can cause an abnormal
pressure or overheat which will result in an
inefficient unit performance or unit malfunction and
will shorten the longevity of the unit.
2) Tape two ends of the copper tubing, tape the
wires for the corresponding indoor
unit to the copper tubing, and mark well with either
A, B, C or D to identify each copper tubing/wiring
bundle. Do not cross wire or mismatch tubing
among indoor units of the multiple zone systems.
Connect the electrical wiring and copper tubing
from each zone of indoor unit to the corresponding
wiring and copper tubing connections of the
corresponding outdoor section (at outdoor
condensing unit). Failure to do so will cause unit
malfunctions, or damages to the compressors and
other parts in the unit and even property or
personal injuries.
* Good unit may not work properly or correctly. correctly.
* Customer do-it-yourself (DIY) installation caused and/or will cause trouble to the unit and your property and
yourself.
* YMGI doesn’t allow nor recommend nor honor warranty for DIY installation. Customers take full responsibility
for DIY installation.
* DIY installation may save money at the front, but cost you more down the road, money and other headache.
as designed or manufactured, if not installed properly or










