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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. 

Summary of Contents for GMV-NDX125P/A-T

Page 1: ...s Manual Original Instructions Commercial Air Conditioners Multi Variable Air Conditioners Fresh Air Series Indoor Unit Models GMV NDX125P A T GMV NDX140P A T GMV NDX224P A T GMV NDX250P A T GMV NDX28...

Page 2: ...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 impac...

Page 3: ...Notice 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 s...

Page 4: ...Installation and Test of Drain Pipe 13 4 4 Installation of Air Duct 15 4 5 Installation of Wired Controller 17 5 Wiring Work 17 5 1 Connection of Wire and Patch Board Terminal 18 5 2 Power Cord Connec...

Page 5: ...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 s...

Page 6: ...tric 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...

Page 7: ...it 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 impr...

Page 8: ...units is more than one and all of them are VRF fresh air indoor units Optional indoor unit model Connected outdoor unit series Connection condition GMV NDX125P A T GMV NDX140P A T GMV NDX224P A T GMV...

Page 9: ...X224P A T 22 4kW GMV5 GMV6 GMV Slim GMV NDX250P A T 28kW GMV NDX280P A T 28kW Fig 2 1 5 Connection diagram of only one VRF fresh air indoor unit system Note Please match the outdoor unit in strict acc...

Page 10: ...ng the unit 5 M10 Nut M10 8 4 4 8 PC To be used together with the hanger bolt for installing the unit GMV NDX125 140P A T 4 GMV NDX224 280P A T 8 6 M10 Washer Spring Washer M10 2 6 4 PC To be used tog...

Page 11: ...e these electric appliances may have image interference and noise Even if the distance is 1m when there is strong electric wave noise may still occur Unit mm Fig 3 2 1 Note Installation of the unit mu...

Page 12: ...se magnetic field or strong interference it is necessary to use shielded wire 3 3 2 Select communication line for indoor unit and indoor unit outdoor unit Fig 3 3 2 Material Type Total Length L m of C...

Page 13: ...it breaker and power cord in above sheet is selected based on the max power max current of unit Above selection requirements of power cord size Power cord size is based on multicore copper core cable...

Page 14: ...hould be on one side of the electric box and below unit s lower level Fig 4 1 1 Below are dimensions of A B C etc for different models Unit mm Model A B C D E F G GMV NDX125P A T 1440 500 1530 300 754...

Page 15: ...according to the 4 spots on the paper pattern The punching diameter may refer to the diameter of expansion bolt about 60mm to 70mm depth as shown in Fig 4 1 4 Unit mm Fig 4 1 3 Fig 4 1 4 2 Insert the...

Page 16: ...cket in a corner and secure the unit on the beam 4 1 4 Horizontal Alignment After the indoor unit is installed remember to check the horizontal status of the whole unit It should be horizontal from fr...

Page 17: ...drain out easily 5 Size of the drainage hose must not be smaller than that of the drain pipe 6 Install the drain pipe according to the following diagram and make it insulated Improper installation wi...

Page 18: ...t capacity Unit mm Fig 4 3 4 5 Install the trap as shown in following Fig 4 3 5 Fig 4 3 5 6 Install one trap for each unit 7 Convenience for cleaning trap in the future should be considered when insta...

Page 19: ...ayer on air out duct air return duct and fresh air duct to avoid heat loss and moisture Adhere a nail on the air duct and then add thermal sponge with a layer of tin Fasten it with a nail cover and th...

Page 20: ...esh Air Series Indoor Unit 16 4 4 1 Installation of Air out Duct 1 Installation of the Rectangular Duct Fig 4 4 1 2 Installation of Circular Duct Fig 4 4 2 4 4 2 Shape and Size of Air outlet and Air r...

Page 21: ...al operation or damage the unit 3 Power capacity should be large enough Sectional area of room wires should be above 2 5mm 4 For unit s power supply please use specialized branch circuit and specializ...

Page 22: ...n Fig 5 1 1 1 Strip about 25mm insulation of the wire end by stripping and cutting tool 2 Remove the wiring screws on the terminal board 3 Shape the tail of wire into ring by needle nose plier and kee...

Page 23: ...d ODU 1 Detach the electric box lid 2 Let the Communication cable pass through the wiring through holes 3 Connect the communication wire to terminal D1 and D2 of indoor 4 bit wiring board as shownin F...

Page 24: ...rd 4 Fix the communication wire with wire clip on the electric box 5 Wiring instructions of remote receiving light board and wired controller 1 Fig 5 4 1 shows the installation of wired controller Fig...

Page 25: ...indoor units at the same time the indoor units must be of the same model Fresh air indoor unit cannot share the same wired controller with other types of VRF indoor unit When two wired controllers ar...

Page 26: ...Multi Variable Air Conditioners Fresh Air Series Indoor Unit 22 Fig 5 5 1...

Page 27: ...e a vacuum cleaner to remove dust If the filters are dirty wash them with warm water and mild detergent and dry the filters in the shade 2 If the unit used in the environment with much dust please cle...

Page 28: ...ensor Error L7 No Master Indoor Unit Error d6 Outlet Pipe Temperature Sensor Error C0 Communication Error L8 Power Insufficiency Protection d7 Humidity Sensor Error AJ Filter Cleaning Reminder L9 Quan...

Page 29: ...or blocked Too heavy heat load of room e g too many people Door or windows is open Air inlet and outlet of IDU are blocked Set temperature is too high or refrigerant leaks The performance of room temp...

Page 30: ......

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