Gree GMV-ND100L/A-T User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi VRF Floor Standing Indoor Unit
Models:
GMV-ND100L/A-T
GMV-ND140L/A-T

To Users
Thank you for selecting Gree product. Please read this instruction manual
carefully before installing and using the product, so as to master and correctly use
the product. In order to guide you to correctly install and use our product and
achieve expected operating effect, we hereby instruct as below:
(1) This appliance can be used by children aged from 8 years and above
and persons with reduced physical, sensory or mental capabilities or
lack of experience and knowledge if they have been given supervision
or instruction concerning use of the appliance in a safe way and
understand the hazards involved. Children shall not play with the
appliance. Cleaning and user maintenance shall not be made by
children without supervision.
(2) In order to ensure reliability of product, the product may consume
some power under stand-by status for maintaining normal
communication of system and preheating refrigerant and lubricant. If
the product is not to be used for long, cut off the power supply; please
energize and preheat the unit in advance before reusing it.
(3) Please properly select the model according to actual using
environment; otherwise it may impact the using convenience.
(4) This product can’t be installed at corrosive, inflammable or explosive
environment or the place with special requirements, such as kitchen.
Otherwise, it will affect the normal operation or shorten the service life
of the unit, or even cause fire hazard or serious injury. As for above
special places, please adopt special air conditioner with anti-corrosive
or anti-explosion function.
(5) If the product needs to be installed, moved or maintained, please
contact our designated dealer or local service center for professional
support. Users should not disassemble or maintain the unit by
themselves, otherwise it may cause relative damage, and our company
will bear no responsibilities.
(6) All the illustrations and information in the instruction manual are only

for reference. In order to make the product better, we will continuously
conduct improvement and innovation. If there is adjustment in the
product, please subject to actual product.
Exception Clauses
Manufacturer will bear no responsibilities when personal injury or property
loss is caused by the following reasons:
(1) Damage the product due to improper use or misuse of the product.
(2) Alter, change, maintain or use the product with other equipment without
abiding by the instruction manual of manufacturer.
(3) After verification, the defect of product is directly caused by corrosive
gas.
(4) After verification, defects are due to improper operation during
transportation of product.
(5) Operate, repair, maintain the unit without abiding by instruction manual
or related regulations.
(6) After verification, the problem or dispute is caused by the quality
specification or performance of parts and components that produced
by other manufacturers.
(7) The damage is caused by natural calamities, bad using environment or
force majeure.

Contents
1 Safety Notices (Please be sure to abide them)................................................. 1
2 Product Introduction.......................................................................................... 4
2.1 Outline of the Unit and Main Parts ............................................................. 4
2.2 Rated Operating Condition ........................................................................ 5
3 Installation Instruction ....................................................................................... 5
3.1 Schematic Diagram of Installation Space................................................... 5
3.2 Requirements for Communication Line...................................................... 6
3.3 Wiring Requirements ................................................................................. 9
4 Installation Instructions...................................................................................... 9
4.1 Installation of Indoor Unit ........................................................................... 9
4.2 Debugging ............................................................................................... 10
4.3 Preparation of the Piping Hole ................................................................. 10
4.4 Installation of the Drainage Pipes ............................................................ 10
4.5 Installation the Connection Pipe............................................................... 11
4.6 Installation of the Baffle............................................................................ 12
5 Wiring Work..................................................................................................... 12
5.1 Connect Cables and Terminals of Wiring Board....................................... 13
5.2 Power Cord Connection........................................................................... 14
5.3 Connection of Communication Line of IDU and ODU .............................. 14
5.4 Connection of Communication Line of Wired Controller .......................... 15
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network . 16
6 Control and Display......................................................................................... 17
6.1 Control Panel ........................................................................................... 17
6.2 Operational Instruction............................................................................. 17
7 The Best Usage Method ................................................................................. 24
8 Maintenance Method....................................................................................... 25
8.1 Cleaning Panel......................................................................................... 25
8.2 Cleaning the Air Filters............................................................................. 26
8.3 Check Before the Usage Season............................................................. 27

8.4 Check After the Usage Season................................................................ 27
9 Table of Error Code for Indoor Unit ................................................................. 27
10 Malfunction Analyzing ................................................................................... 28
10.1 Service Center ....................................................................................... 29
10.2 After-sales Service ................................................................................. 29

Multi VRF Floor Standing Indoor Unit
1
1 Safety Notices (Please be sure to abide them)
WARNING: If not abide them strictly, it may cause severe damage to the
unit or the people.
NOTICE: If not abide them strictly, it may cause slight or medium damage
to the unit or the people.
This sign indicates that the items must be prohibited. Improper operation
may cause severe damage or death to people.
This sign indicates that the items must be observed. Improper operation
may cause damage to people or property.
Follow this manual to
complete the installation
work. Please read this
manual carefully before
turning on or repairing
the unit.
Installation should be
conducted by the
dealer or qualified
personnel. Please do
not attempt to install
the air conditioner by
yourself. Improper
installation may lead
to water leakage,
electric shock or fire
hazard, etc.
Before installation,
please check whether
the power supply is
complied with that
specified on the
nameplate
and check the
safety of the power
supply.
The air conditioner
must be grounded
reliably for avoiding
electric shock.
Please do not
connect the earthing
wire to gas pipe,
water pipe, lightning
rod or telephone line.
Be sure to use special
accessories and parts
for
installation to prevent
water leakage, electric
shock and fire hazard,
etc.
If refrigerant leakage
happens, please
ventilate the room
immediately.

Multi VRF Floor Standing Indoor Unit
2
Diameter of power cord
should be large enough.
The damaged power
cord and connection wire
must be replaced with
special cables.
When the power cord
is connected, please
fix the electric box
cover properly to
avoid safety
accidents.
Never fail to comply with
the nitrogen-charging
welding process. Do
charge nitrogen when
welding the pipes.
Never short circuit or
cancel the pressure
switch to prevent unit
damage.
As for the unit controlled
by the wired controller,
connect the wired
controller well firstly and
then energize the unit;
otherwise, the unit can’t
operate normally.
When installation is
finished, please
check whether the
drainage pipes,
pipelines and electric
wires are connected
correctly to avoid
water leakage,
refrigerant leakage,
electric shock or fire,
etc.
Do not insert fingers or
objects into air outlet or
air return grille.
Open the door and
window frequently to
keep good ventilation
for avoiding oxygen
deficit when gas
heater or oil heater is
used in the room.

Multi VRF Floor Standing Indoor Unit
3
Never plug in or unplug
the power plug directly to
turn on or turn off the air
conditioner.
Once the air
conditioner is turned
on, it can be turned
off only after it has
operated for 5min at
least; otherwise,
it will
affect the oil return of
compressor.
Do not allow children to
operate this air
conditioner.
Do not operate this
air conditioner with
wet hands.
The air conditioner can
be cleaned only when it
has been turned off and
the power has been cut
off; otherwise, it may
cause electric shock or
injury.
Never spray or flush
water towards the air
conditioner;
otherwise,
malfunction or
electric shock may
happen.
Do not expose the air
conditioner to the moist
or corrosive
environment.
Put through the
power 8 hours in
advance before
operation. Do not cut
off the power when
the air conditioner
stops operation for
only about one night
(protect the
compressor).
Volatile liquid, such as
diluent or gasoline, will
damage the appearance
of air conditioner. Only
soft dry cloth and wet
cloth dipped with neutral
detergent can be used to
clean the outer case of
air conditioner.
Under cooling mode,
please don't set the
room tempe
rature too
low; keep the
temperature
difference between
indoor and outdoor
within 5°C (41°F).

Multi VRF Floor Standing Indoor Unit
4
If there are any abnormal
circumstances (such as
burning smell, etc.),
please turn off the unit
and cut off the main
power supply
immediately, and then
contact Gree appointed
service center. If those
abnormal circumstances
still exit, the unit may be
damaged and it may
lead
to electric shock or fire
hazard.
Do not repair the unit
by yourself. Wrong
maintenance may
cause electric shock
or fire hazard. Please
contact Gree
appointed service
center for help.
Any personal injury or property loss caused by improper installation,
improper debug, unnecessary repair or not following the instructions of this
manual should not be the responsibility of Gree Electric Appliances, Inc. of
Zhuhai.
2 Product Introduction
2.1 Outline of the Unit and Main Parts
Fig 2.1

Multi VRF Floor Standing Indoor Unit
5
No.
Part Name
No.
Part Name
(1)
Air outlet
(5)
Connecting pipe
(2)
Display screen and button
(6)
Drainage pipe
(3)
Front panel
(7)
Wrapping tape
(4)
Remote control box
—
—
2.2 Rated Operating Condition
Item
Indoor Condition
Outdoor Condition
DB WB DB WB
Rated
27
19
35
24
Rated
20
15
7
6
3 Installation Instruction
3.1 Schematic Diagram of Installation Space
Fig 3.1