Gree GMV-ND224PH/A-T User manual

Owner's Manual

Original Instructions

Commercial Air Conditioners

Multi Variable Air Conditioners

Ducted Type Indoor Unit

Models:

GMV-ND224PH/A-T

GMV-ND280PH/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) .....................................................................1

2 Product Introduction ......................................................................................................3

2.1 Names of Key Components..................................................................................................... 3

2.2 Rated Working Condition......................................................................................................... 3

3 Preparations for Installation ..........................................................................................4

3.1 Standard Fittings ..................................................................................................................... 4

3.2 Location for Installation............................................................................................................ 4

3.3 Requirements for Communication Line ................................................................................... 5

3.4 Wiring Requirements ............................................................................................................... 6

4 Installation Instructions .................................................................................................7

4.1 Installation of Indoor Unit......................................................................................................... 7

4.2 Refrigerant Pipe Connection ................................................................................................... 9

4.3 Drainage Pipe Installation and Drainage System Testing........................................................ 9

4.4 Installation of Air Duct............................................................................................................ 12

4.5 Installation of Wired Controller .............................................................................................. 13

4.6 External Static Pressure Settings .......................................................................................... 13

5 Wiring Work...................................................................................................................14

5.1 Connection of Wire and Patch Board Terminal...................................................................... 14

5.2 Power Cord Connection ........................................................................................................ 15

5.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or Indoor Unit) 16

5.4 Connect Communication Wire of Wired Controller................................................................ 16

5.5 Illuminate for Connection of Wired Controller and Indoor Units Network .............................. 17

6 Routine Maintenance....................................................................................................19

6.1 Cleaning of Filter ................................................................................................................... 19

6.2 Maintenance before the Seasonal Use ................................................................................. 19

6.3 Maintenance after the Seasonal Use .................................................................................... 19

7 Table of Error Codes for Indoor Unit...........................................................................20

8 Troubleshooting............................................................................................................20

Multi Variable Air Conditioners Ducted Type Indoor Unit

1 Safety Notices (Please be Sure to Abide)

WARNING: If not abide strictly, it may cause severe damage to the unit or the people.

NOTE:If not abide strictly, it may cause slight or medium damage to the unit or the people.

This sign indicates that the operation 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 above special places, please adopt special air conditioner with anti-corrosive or anti-

explosion function.

Please install the unit according

to instructions in this manual.

Read this manual carefully

before starting up or checking

the machine.

Installation should be performed

by dealer or qualified

technicians. Do not install the

product by yourself. Improper

installation may result in water

leakage, electric shock or fire

hazard.

Make sure the local power

supply is in accordance with

units before installation, and

check the power supply carefully.

This air conditioner must be

properly grounded through the

receptacle to avoid electric

shock. The grounding wire

shouldn’t be connected with gas

pipe, water pipe, lightning

arrester or telephone line.

Please use specialized

accessories or parts to carry out

installation, or water leakage,

electric shock, fire hazard may

resulted.

R410A refrigerant can produce

poisonous gas once it meets

fire, so please ventilate the room

immediately if refrigerant leaks

out during installation.

Diameter of power cord must be

large enough. Damaged power

cord and connecting wire must

be replaced by specialized

electric cable.

After the power cord is

Connected, please install the

cover of electric box to avoid

danger.

Nitrogen must be charged

according to technical

requirements.

Short circuit is forbidden. Do not

cancel the pressure switch in

case the unit may be damaged.

Multi Variable Air Conditioners Ducted Type Indoor Unit

For units with wired controller, do

not connect power supply until

the wired controller is well

installed. Otherwise, the wired

controller cannot be used.

When the installation is finished,

please check and make sure the

drain pipe, pipeline and electric

wire are all well connected in

order to avoid water leakage,

refrigerant leakage, electric

shock or fire hazard.

Do not extend fingers or objects

into air outlet or air return grille.

If you use gas heater or

petroleum heater in the same

room, please open the door or

window to maintain good air

circulation in case the room may

lack of oxygen.

Never start or stop the air

conditioner by inserting or

removing the power cord.

Do not turn off the air

conditioner until it runs for at

least 5 minutes. Otherwise, oil-

return of the compressor will be

affected.

Children are not allowed to

operate the air conditioner. Do not operate the air

conditioner with wet hands.

Please turn the unit off and

unplug your air conditioner

before cleaning. Otherwise, it

may cause electric shock or

personal injury.

Do not spray water on the air

conditioner or it will cause

malfunction or electric shock.

Do not expose the air conditioner

directly to water or place it in a

damp or corrosive environment.

Connect power supply 8 hours

before operation. Do not

disconnect power if you want to

stop the unit in a short period of

time, e.g. in one night. (This is

for protecting the compressor.)

Volatile liquid like thinner or

gasoline will damage the

appearance of air conditioner.

Please use soft dry cloth or wet

cloth with mild detergent to clean

the outer case of air conditioner.

During Cooling mode, indoor

temperature should not be set

too low. Keep the difference

between indoor temp and

outdoor temp within 5℃.

Multi Variable Air Conditioners Ducted Type Indoor Unit

If abnormal condition occurs (e.g.

unpleasant smell), please turn off

the unit at once and disconnect

power supply. Then contact

GREE service center. If the air

conditioner continues to operate

despite of abnormal condition,

the unit may be damaged and it

may cause electric shock or fire

hazard.)

Do not repair the air conditioner

by yourself. Improper repair will

cause electric shock or fire

hazard. Please contact GREE

service center and have it

repaired by professional

technicians.

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.

Correct Disposal of this product

This marking indicates that this product should not be disposed with other

household wastes throughout the EU. To prevent possible harm to the environment

or human health from uncontrolled waste disposal, recycle it responsibly to promote

the sustainable reuse of material resources. To return your used device, please use

the return and collection systems or contact the retailer where the product was

purchased. They can take this product for environmental safe recycling.

2 Product Introduction

2.1 Names of Key Components

Fig.2.1.1

2.2 Rated Working Condition

—

Indoor Side Condition

Outdoor Side Condition

Dry Bulb Temp(℃) Wet Bulb Temp(℃) Dry Bulb Temp(℃) Wet Bulb Temp(℃)

Rated Cooling

Rated Heating

Multi Variable Air Conditioners Ducted Type Indoor Unit

3 Preparations for Installation

Note: Product graphics are only for reference. Please refer to actual products. Unspecified measure

unit is mm.

3.1 Standard Fittings

Please use the supplied standard fittings listed below as instructed.

No.

Name

Appearance

Q'ty

Usage

1 Wired Controller 1pc. To control the indoor unit

2 Special Nut 1pc. To be used for connecting the

refrigerant pipe

3 M10×8 Nut with Washer 4pcs. To be used together with the hanger

bolt for installing the unit

4 M10 Nut (M10×8.4 Nut) 8 pcs. To be used together with the hanger

bolt for installing the unit

5 M10 Washer (Spring Washer

M10×2.6)

4 pcs. To be used together with the hanger

bolt for installing the unit

6 M10 Washer (M10×Φ30×2.5) 4 pcs. To be used together with the hanger

bolt for installing the unit

7 Insulation 2 pc. To insulate the gas/liquid pipe

Fastener

8 pcs.

To fasten the sponge

9 Hanger 4 pcs. To fix the indoor unit

10 M8 Nut (M8×6.8) 8 pcs. To fix the hook on the cabinet of the

unit

11 M8 Washer (Spring

Washer M8×2.1)

8 pcs. To fix the hook on the cabinet of the

unit

12 M8 Washer (M8×Φ16×1.5) 8 pcs. To fix the hook on the cabinet of the

unit

paper pattern for installation

—

1 pc.

Locate the drill hole on ceiling

3.2 Location for Installation

(1) The appliance shall not be installed in the laundry.

(2) The top holder must be strong enough to support unit’s weight.

(3) Drain pipe can drain water out easily.

(4) There is no obstacle at inlet or outlet. Please ensure good air circulation.

(5) In order to make sure the space for maintenance, please install the indoor unit according to the

dimension described below.

(6) Keep the unit away from heating source, inflammable gas or smoke.

(7) This is a concealed ceiling type unit.

(8) Indoor unit, outdoor unit, power cord and electric wire should stay at least 1m from the TV set

and radio. Otherwise, these electrical appliances may have image interference and noise (Even

if the distance is 1m when there is strong electric wave, noise may still occur).

Multi Variable Air Conditioners Ducted Type Indoor Unit

Unit: mm

Fig.3.2.1

NOTES!

①Installation of the unit must be in accordance with National Electric Codes and local regulations.

②Improper installation will affect unit’s performance, so do not install the unit by yourself. Please

contact local dealer to arrange professional technicians for the installation.

③Do not connect power until all installation work is finished.

3.3 Requirements for Communication Line

NOTE!

If air conditioner used under strong electronic-magnetic interference circumstance, STP (shielded

twisted pair) communication cable must be adopted.

3.3.1 Select Communication Line for Indoor Unit and Wired Controller

Fig.3.3.1

Material type

Total length of

communication line

between indoor unit and

wired controller L (m)

Wire size

(mm²)

Material

Standard Remarks

Light/Ordinary

polyvinyl chloride

sheathed cord.

(60227 IEC 52

/60227 IEC 53)

L≤250 2×0.75

~2×1.25

IEC 60227-

1. Total length of communication line

can't exceed 250m.

2. The cord shall be Circular cord

(the cores shall be twisted

together).

3. If unit is installed in places with

intense magnetic field or strong

interference, it is necessary to use

shielded wire.

Multi Variable Air Conditioners Ducted Type Indoor Unit

3.3.2 Select Communication Line for Indoor Unit and Outdoor Unit

Fig.3.3.2

Material Type

Total Length L (m) of

Communication Cable

between Indoor Unit

and Indoor (Outdoor)

Unit

Wire size

(mm²)

Material

Standard Remarks

Light/Ordinary

polyvinyl chloride

sheathed cord.

(60227 IEC 52

/60227 IEC 53)

L≤1000 ≥2×0.75 IEC 60227-5

1. If the wire diameter is enlarged to 2×1

mm2

, the total communication line length

can reach 1500 m.

2. The cord shall be Circular cord (the

cores shall be twisted together).

3. If unit is installed in places with intense

magnetic field or strong interference, it is

necessary to use shielded wire.

3.4 Wiring Requirements

Power Cord Size and Air Switch Capacity

Model Power Cord Size

Air Switch

Capacity

(A)

Minimum Sectional

Area of Ground

Wire(mm

)

Minimum Sectional Area

of Power Cord(mm²)

GMV-ND224PH/A-T

220-240V ~50Hz

208-230V ~60Hz

1.0

GMV-ND280PH/A-T

1.0

NOTES!

①Use copper wire only as unit’s power cord. Operating temperature should be within its rated

value.

②If the length of power cord is more than 15 m, please increase properly the sectional area of

power cord to avoid overload, which may cause accident.

③Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at 40℃

ambient temperature when laying across plastic pipe. Air switch is D type and used at 40℃. If

actual installation condition varies, please lower the capacity appropriately according to the

specifications of power cord and air switch provided by manufacturer.

④Install cut-off device near the unit. The minimum distance between each stage of cut-off device

should be 3 mm (The same for both indoor unit and outdoor unit).

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