Gree GMV-280WL/C1-X User manual

Owner's Manual

Original Instructions

Commercial Air Conditioners

DC Inverter Multi VRF System

Models:

GMV-H224WL/A-X

GMV-H280WL/A-X

GMV-H335WL/A-X

GMV-224WL/C-X

GMV-280WL/C-X

GMV-335WL/C-X

GMV-280WL/C1-X

GMV-335WL/C1-X

To U s ers

Thank you for selecting Gree’s 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 is not intended for use by persons (including children) with reduced physical,

sensory or mental capabilities, or lack of experience and knowledge, unless they have been

given supervision or instruction concerning use of the appliance by a person responsibility

for their safety. Children should be supervised to ensure that they do not play with the

appliance.

(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 has gone through strict inspection and operational test before leaving the

factory. In order to avoid damage due to improper disassembly and inspection, which may

impact the normal operation of unit, please do not disassemble the unit by yourself. You can

contact with the special maintenance center of our company if necessary.

(5) When the product is faulted and cannot be operated, please contact with our maintenance

center as soon as possible by providing the following information.

1) Contents of nameplate of product (model, cooling/heating capacity, product No.,

ex-factory date).

2) Malfunction status (specify the situations before and after the error occurs).

(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. We

have the right to make necessary revision to the product from time to time due to the reason

of sales or production, and reserve the right to revise the contents without further notice.

(7) The final right to interpret for this instruction manual belongs to Gree Electric Appliances, Inc.

of Zhuhai.

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 ................................................................................................. 3

2.1 Names of Main Parts ........................................................................................................ 3

2.2 Combinations of Indoor and Outdoor Units ....................................................................... 4

2.3 Operating Range .............................................................................................................. 4

3 Preparation before Installation ................................................................................. 4

3.1 Standard Parts.................................................................................................................. 4

3.2 Installation Site ................................................................................................................. 5

3.3 Piping Work Requirements ............................................................................................... 6

4 Installation Instruction .............................................................................................. 6

4.1 Dimension of Outdoor Unit and Mounting Hole ................................................................. 6

4.2 Connection Pipe ............................................................................................................... 7

4.3 Installation of Connection Pipe.........................................................................................11

4.4 Vacuum Pumping, Refrigerant Adding .............................................................................16

4.5 Electric Wiring..................................................................................................................17

5 Check Items after Installation and Test Operation ................................................ 20

5.1 Check Items after Installation...........................................................................................20

5.2 Test Operation and Debugging ........................................................................................21

6 Common Malfunctions and Troubleshooting........................................................ 26

7 Error Indication ........................................................................................................ 28

8 Maintenance and Care............................................................................................. 30

8.1 Outdoor Heat Exchanger .................................................................................................31

8.2 Drain Pipe........................................................................................................................31

8.3 Notices before Seasonal Use ..........................................................................................31

8.4 Maintenance after Seasonal Use .....................................................................................31

8.5 Parts Replacement ..........................................................................................................31

9 After-sales Service................................................................................................... 31

DC Inverter Multi VRF System

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.

NOTE: 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.

WARNING!

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 the

above special places, please adopt special air conditioner with anti-

corrosive or

anti-explosion function.

DC Inverter Multi VRF System shall only be connected to an appliance suitable for the same

refrigerant.

All outdoor units in Manual Cover is a partial unit, complying with partial unit of IEC

60335-2-40:2018, and must only be connected to other units that have been confirmed as

complying to corresponding partial unit requirements of this international standard.

The electrical interface shall comply with electrical security requirement, voltage shall be

380-415V(50/60Hz), current shall be referred to the table of “Selection of circuit breaker and

power cord” in Section 4.5.2, and safety class of construction is I.

Follow this manual to

complete the installation work.

Please read this manual

carefully before turning on or

repairing the unit.

Installation should be

performed by the distributor or

qualified technicians. Do not

install the product 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.

DC Inverter Multi VRF System

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.

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

temperature too low; keep the

temperature difference

between indoor and outdoor

within 5°C (41°F).

DC Inverter Multi VRF System

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.

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.

Install units according to national wiring codes.

If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified

person in order to avoid a hazard.

An all-pole disconnection device which has at least 3mm clearances in all poles, and disconnection must be

incorporated in the fixed wiring in accordance with the wiring rules.

Gree Electric Appliances, Inc. of Zhuhai will not assume responsibility for any personal injury or property loss caused

by improper installation, improper debugging, unnecessary repair or not following the instructions of this manual.

2 Product Introduction

Gree Multi VRF System adopts inverter compressor technology. By changing the displacement

of compressor, stepless capacity regulation within range of 10%~100% can be realized. Various

product lineups are provided with capacity range from 22.4kW to 35kW, which can be widely used in

residential, commercial and working area and especially applicable to places with big load change.

Gree residential air conditioner is absolutely your best choice.

2.1 Names of Main Parts

Fig.2.1

DC Inverter Multi VRF System

No.

①②③④⑤

Name

Motor

Fan blade

Electric box assembly

Gas pipe valve

Liquid pipe valve

2.2 Combinations of Indoor and Outdoor Units

(1) See below the number of indoor units that can be connected to the outdoor unit.

(2) The total capacity of indoor units should be within 50%~135% of that of the outdoor unit.

Model

Max sets of connectable IDUs

GMV-H224WL/A-X

GMV-H280WL/A-X

GMV-H335WL/A-X

GMV-224WL/C-X

GMV-280WL/C-X

GMV-335WL/C-X

GMV-280WL/C1-X 17

GMV-335WL/C1-X

(3) Can be connected to various indoor units. When any one of the indoor units receives

operating command, outdoor unit will start operation as per required capacity. When all

indoor units stop, outdoor unit will be shut off.

2.3 Operating Range

Cooling

Outdoor temperature: -5 ~52°C

Heating Outdoor temperature: -20 ~27°C

3 Preparation before Installation

NOTE: Graphics here are only for reference. Please refer to actual products. Unspecified

dimensions are all in mm.

3.1 Standard Parts

Please use the supplied standard parts as required.

Parts for Outdoor Unit

No.

Name

Appearance

Qty

Remark

1 User Manual 1 —

2 Wiring (match with resistance) 1 Must be connected to the last IDU

of communication connection

3 Liquid side connection pipe 1

This part is included in the

following models:

GMV-H224WL/A-X

GMV-224WL/C-X

4 Gas side connection pipe 1

This part is included in the

following models:

GMV-H224WL/A-X

GMV-224WL/C-X

5 Drainage hole cap 3 —

6 Drainage joint 1 —

DC Inverter Multi VRF System

Parts for Outdoor Unit

No.

Name

Appearance

Qty

Remark

7 Magnetic ring 1 Please refer to section 4.5.2 for

the detailed operation method.

3.2 Installation Site

Forbidden item! Improper operation might lead to personal injury or even death.

Item needs to be followed. Improper operation might lead to personal injury or property damage.

Select a location which is strong

enough to hold unit’s weight so

that unit can stand still and

erect.

The installation position should

withstand strong wind, typhoon

and earthquake. The unit must be

installed stably.

Please keep the unit away from

inflammable, explosive and

corrosive gas or waste gas.

Make sure the location has space

for heat exchange and

maintenance so that unit can

operate reliably with good

ventilation.

ODU and IDU should stay as

close as possible to shorten the

length of refrigerant pipe and

reduce bend angles.

Select a location which is out of

children’s reach. Keep the unit

away from children.

If the ODU is totally surrounded by walls, please refer to Fig.3.1 for space dimension:

Fig.3.1

DC Inverter Multi VRF System

3.3 Piping Work Requirements

Refer to the table below for piping work requirements:

R410A Refrigerant System

Outer diameter (mm/inch)

Wall thickness(mm)

Φ6.35(1/4)

≥0.8

Φ9.52(3/8)

≥0.8

Φ12.7(1/2)

≥0.8

Φ15.9(5/8) ≥1.0

Φ19.05(3/4)

≥1.0

Φ22.2(7/8)

≥1.2

Φ25.4(8/8)

≥1.2

4 Installation Instruction

NOTE: Graphics here are only for reference. Please refer to actual products. Unspecified

dimensions are all in mm.

4.1 Dimension of Outdoor Unit and Mounting Hole

Unit Outline and Installation Dimension(mm).

Fig.4.1

Unit: mm

Model

GMV-H224WL/A-X

940

320

1430

632

350

GMV-H280WL/A-X

940

460

1615

610

486

GMV-H335WL/A-X

940

460

1615

610

486

GMV-224WL/C-X

940

320

1430

632

350

GMV-280WL/C-X

940

460

1615

610

486

GMV-335WL/C-X

940

460

1615

610

486

GMV-280WL/C1-X

940

460

1615

610

486

GMV-335WL/C1-X

940

460

1615

610

486

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