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Multi Variable Air Conditioners Ducted Type Indoor Unit 

1 Safety Precautions 

 

WARNING

 

(1) 

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. 

(2)  Follow this instruction to complete the installation work. Please carefully read this manual before unit startup 

and service. 

(3)  Wire size of power cord should be large enough. The damaged power cord and connection wire should be 

replaced by exclusive cable. 

(4)  After connecting the power cord, please fix the electric box cover properly in order to avoid accident. 

(5)  Never fail to comply with the nitrogen charge requirements. Charge nitrogen when welding pipes. 

(6)  Never short-circuit or cancel the pressure switch to prevent unit damage.   

(7)  Please firstly connect the wired controller before energization, otherwise wired controller cannot be used. 

(8)  Before  using  the unit, please check  if  the piping  and  wiring are correct  to  avoid  water leakage,  refrigerant 

leakage, electric shock, or fire etc. 

(9)  Do not insert fingers or objects into air outlet/inlet grille. 

(10)  Open the door and window and keep good ventilation in the room to avoid oxygen deficit when the gas/oil 

supplied heating equipment is used. 

(11) Never start up or shut off the air conditioner by means of directly plug or unplug the power cord. 

(12) Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the compressor. 

(13) Do not allow children operate this unit. 

(14) Do not operate this unit with wet hands. 

(15) Turn off the unit or cut off the power supply before cleaning the unit, otherwise electric shock or injury   

may happen. 

(16) Never spray or flush water towards unit, otherwise malfunction or electric shock may happen. 

(17) Do not expose the unit to the moist or corrosive circumstances. 

(18) Under cooling mode, please don't set the room temperature too low and keep the temperature difference 

between indoor and outdoor unit within 5

 (41

). 

(19) User  is  not  allowed  to  repair  the  unit.  Fault  service  may  cause  electric  shock  or  fire  accidents.  Please 

contact Gree appointed service center for help.   

(20) Before installation, please check if the power supply is in accordance with the requirements specified on the 

nameplate. And also take care of the power safety. 

(21) Installation should be conducted by dealer or qualified personnel. Please do not attempt to install the unit by 

yourself. Improper handling may result in water leakage, electric shock or fire disaster etc. 

(22) Be  sure  to  use  the  exclusive  accessory  and  part  to  prevent  the  water  leakage,  electric  shock  and  fire     

accidents. 

(23) Make sure the unit can be earthed properly and soundly after plugging into the socket so as to avoid electric 

shock. Please do not connect the ground wire to gas pipe, water pipe, lightning rod or telephone line.   

(24) Electrify the unit 8 hours before operation. Please switch on for 8 hours before operation. Do not cut off the 

power when 24 hours short-time halting (to protect the compressor).   

Summary of Contents for GMV-ND72PH/A-T(U)

Page 1: ...Owner s Manual Original Instructions Commercial Air Conditioners Multi Variable Air Conditioners Ducted Type Indoor Unit Models GMV ND72PH A T U GMV ND96PH A T U...

Page 2: ...exceed the total capacity of outdoor units Otherwise poor effect of cooling or heating may result 5 Direct operators or maintainers should well keep this manual 6 If this unit fails to operate normal...

Page 3: ...t dispose this product as unsorted municipal waste Collection of such waste separately for special treatment is necessary Correct Disposal of this product This marking indicates that this product shou...

Page 4: ...4 4 Installation of Air Duct 11 4 5 Installation of Wired Controller 12 4 6 External Static Pressure Settings 12 5 Wiring Work 13 5 1 Connection of Wire and Patch Board Terminal 14 5 2 Power Cord Con...

Page 5: ...er by means of directly plug or unplug the power cord 12 Turn off the unit after it runs at least five minutes otherwise it will influence oil return of the compressor 13 Do not allow children operate...

Page 6: ...ens such as burning smell please power off the unit and cut off the main power supply and then immediately contact Gree appointed service center If abnormality keeps going the unit might be damaged an...

Page 7: ...it 4 M10 Nut M10X8 4 Nut 8 To be used together with the hanger bolt for installing the unit 5 M10 Washer Spring Washer M10X2 6 4 To be used together with the hanger bolt for installing the unit 6 M10...

Page 8: ...electric wire should stay at least 1m 39 3 8 in from the TV set and radio Otherwise these electrical appliances may have image interference and noise Even if the distance is 1m 39 3 8 in when there is...

Page 9: ...installed in places with intense magnetic field or strong interference it is necessary to use shielded wire 3 3 2 Select Communication Line for Indoor Unit and Outdoor Unit Fig 3 3 2 Wire type Total l...

Page 10: ...apacity appropriately according to the specifications of power cord and air switch provided by manufacturer 4 Install cut off device near the unit The minimum distance between each stage of cut off de...

Page 11: ...are field supplied Fig 4 1 4 2 Install the indoor unit temporarily Assemble suspension bolt on the expansion bolt attach the hanger bracket to the suspension bolt Be sure to fix it securely by using a...

Page 12: ...ten the nut on it Fig 4 1 6 4 2 Refrigerant Pipe Connection 1 Aim the flaring port of copper pipe at the center of screwed joint and then tighten the flaring nut with hand as shown in fig 4 2 2 Tighte...

Page 13: ...e drainage hole and then tighten it with drainage hole and wire binder Can t connect the drainage hole and drainage hole with glue 5 When the drainage pipelines are used for several units the position...

Page 14: ...out elbow Fig4 3 7 NO3 Inserting pipe connection Fig4 3 8 Fig 4 3 6 Fig 4 3 7 Fig 4 3 8 7 Drain pipes should have a downward slope of at least 1 2 in order to prevent pipes from sagging install hanger...

Page 15: ...ty Each air out duct and air return duct should be fixed on a pre made board with iron frame The junction of air duct should be well sealed in order to prevent air leakage The design and construction...

Page 16: ...3 1 8 402 15 7 8 4 5 Installation of Wired Controller Please refer to User Manual of Wired Controller for the installation details NOTICE When installation is finished the unit must be tested and debu...

Page 17: ...e properly the sectional area of power cord to avoid overload which may cause accident External Static Pressure static pressure level of indoor fan motor 0 20 inWG 50 Pa 01 0 24 inWG 60 Pa 02 0 28 inW...

Page 18: ...keep the gauge of ring in accordance with screw 4 Use the screwdriver for tightening the terminal 2 The connection of stranded wire as shown in fig 5 1 2 1 Strip about 10mm 3 8 in insulation of the en...

Page 19: ...most downstream IDU of the communication bus terminal D1 and D2 as shown in fig 5 3 2 terminal resistor is provided with each ODU 5 4 Connect Communication Wire of Wired Controller 1 Open electric box...

Page 20: ...at must be set as master one and slave one 4 One wired controller can control 16 indoor units in maximum at the same time As shown in fig5 5 1 The type of indoor units must be the same if they are con...

Page 21: ...Multi Variable Air Conditioners Ducted Type Indoor Unit 17 Fig 5 5...

Page 22: ...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 23: ...epair may cause electric shock or fire so please contact an authorized service center for professional service The following checks prior to contact may save your time and money Phenomenon Troubleshoo...

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