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DC Inverter Multi VRF System   

21 

5 Check Items after Installation and Test Operation 

5.1 Check Items after Installation 

Check items 

Possible conditions due to improper installation 

Check 

Each part of the unit is installed securely? 

Unit may drop, shake or emit noise. 

 

Gas leakage test is taken or not? 

Insufficient cooling (heating) capacity. 

 

Unit gets proper thermal insulation or not? 

There may be condensation and dripping. 

 

Drainage is smooth or not? 

There may be condensation and dripping. 

 

Is the voltage in accordance with the rated voltage 
specified on the nameplate? 

Unit may have malfunction or components may 
get damaged. 

 

Is the electric wiring and pipe connection installed 
correctly? 

Unit may have malfunction or components may 
get damaged. 

 

Unit is securely grounded or not? 

Electrical leakage. 

 

Power cord meets the required specification? 

Unit may have malfunction or components may 
get damaged. 

 

Is the air inlet/outlet blocked? 

Insufficient cooling (heating) capacity. 

 

Length of refrigerant pipe and the charging amount 
of refrigerant are recorded or not? 

The refrigerant charging amount is not 
accurate. 

 

Binding pieces on compressor feet are removed or 
not? 

Compressor may get damaged. 

 

5.2 Test Operation and Debugging 

 

(1)  After finishing the first installation or replacing the main board of outdoor unit, it is necessary to perform test 

operation and debugging. Otherwise, unit won’t be able to work. 

(2)  Test operation and debugging must be performed by professional technicians or under the guidance of 

professional technicians. 

5.2.1 Prepare the Test Operation and Debugging 

(1)  Do not connect power until all installation work is finished. 
(2)  All control circuits and wires are correctly and securely connected. 
(3)  Check whether the fixing loops for compressor foots are removed. 
(4)  All small pieces, especially metal chips, thread ends and forceps holder, must be removed 

from the unit. 

(5)  Check whether unit’s appearance and pipeline system has been damaged during 

transportation. 

(6)  Calculate the quantity of refrigerant that needs to be added according to the pipe length. 

Pre-charge the refrigerant. In case that the required charging quantity is not reached while 
refrigerant can’t be added, record the quantity of refrigerant that still needs to add and 
complement the quantity during test operation. For details of adding refrigerant during test 
operation, see below. 

(7)  After refrigerant is added, make sure valves of outdoor unit are completely open. 
(8)  For the convenience of troubleshooting during debugging, unit shall be connected to a PC 

with applicable debugging software. Make sure unit’s real-time data can be checked through 
this computer. The installation and connection of debugging software can be found in the 
Service Manual. 

Содержание GMV-36WL/C-T

Страница 1: ...Owner s Manual Original Instructions Commercial Air Conditioners DC Inverter Multi VRF System Applicable Models GMV 60WL C T U GMV 48WL C T U GMV 36WL C T U...

Страница 2: ...All graphics in this manual is only for your reference For sales or production reasons these graphics are subject to change by manufacturer without prior notice 9 This appliance is not intended for u...

Страница 3: ...Hole 5 4 2 Connection Pipe 6 4 3 Installation of Connection Pipe 10 4 4 Disassembly of Compressor Feet 14 4 5 Vacuum Pumping Refrigerant Adding 15 4 6 Electric Wiring 17 5 Check Items after Installati...

Страница 4: ...ephone line 6 Be sure to use special accessories and parts for installation to prevent water leakage electric shock and fire hazard etc 7 If refrigerant leakage happens please ventilate the room immed...

Страница 5: ...tely 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 27 Do not repair the unit by you...

Страница 6: ...s of DC Inverter Multi VRF System 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 a...

Страница 7: ...for heat exchange and maintenance so that unit can operate reliably with good ventilation 7 Make sure the location has space for heat exchange and maintenance so that unit can operate reliably with go...

Страница 8: ...r piping work requirements R410A Refrigerant System Outer diameter mm inch Wall thickness mm inch 6 35 1 4 0 8 1 32 9 52 3 8 0 8 1 32 12 7 1 2 0 8 1 32 15 9 5 8 1 0 1 25 19 05 3 4 1 0 1 25 4 Installat...

Страница 9: ...inch Model A B C D E GMV 36WL C T U GMV 48WL C T U 900 35 3 8 340 13 3 8 1345 53 572 22 1 2 378 15 GMV 60WL C T U 940 37 320 12 9 16 1430 56 1 4 632 24 7 8 350 14 7 8 4 2 Connection Pipe 4 2 1 Schemat...

Страница 10: ...and Height Difference of Connection Pipe Piping parameters of GMV 36WL C T U GMV 48WL C T U GMV 60WL C T U Allowable value Fitting pipe m feet Total length actual length of fitting pipe 300 984 L1 L2...

Страница 11: ...le Pipe dimension Gas pipe mm inch Liquid pipe mm inch GMV 36WL C T U 15 9 5 8 9 52 3 8 GMV 48WL C T U 15 9 5 8 9 52 3 8 GMV 60WL C T U 19 05 3 4 9 52 3 8 4 2 4 Selection of Indoor Branches Select ind...

Страница 12: ...otal capacity of downstream indoor units C Btu h Pipe mm inch Liquid pipe mm inch C 19000 12 7 1 2 6 35 1 4 19000 C 48500 15 9 5 8 9 52 3 8 48500 C 76400 19 05 3 4 9 52 3 8 4 2 6 Dimension of Pipe bet...

Страница 13: ...le is not allowed 3 When laying the pipe be careful not to distort it Radius of bending parts should be over 200mm 8inch Note that pipes cannot be repeatedly bent or stretched otherwise the material w...

Страница 14: ...of nut will get damaged if the flared nut is twisted forcibly 3 Use torque wrench to twist on the flared nut tightly until the wrench gives out a click sound Hold the handle of wrench and make it at r...

Страница 15: ...ht or rear side Fig 4 13 2 Pipe connection for GMV 60WL C T U As shown in Fig 4 14 and Fig 4 15 open the outermost soundproof cotton and place a fire barrier between compressor and straight pipe Use a...

Страница 16: ...d remove burrs as well See Fig 4 17 3 Y type branch must be installed vertically or horizontally Fig 4 17 Branch shall be isolated by insulating material that can bear 120 C 248 F or even higher tempe...

Страница 17: ...perature For heat pump unit liquid pipe should bear 70 C 158 F or above and gas pipe should bear 120 C 248 F or above For cooling only unit both liquid pipe and gas pipe should bear 70 C 158 F or abov...

Страница 18: ...ds to be charged with additional refrigerant 2 Confirm whether outdoor liquid and gas valves are closed 3 Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the outdoor va...

Страница 19: ...Quantity of IDU 2 0 3 kg 10 58oz First confirm that there is no leakage from the system When compressor is not working charge additional R410A with specific amount to the unit through the filling ope...

Страница 20: ...function and thermal trip function so that system can be protected from short circuit and overload 6 Air conditioner belongs to class I electrical appliance so it must be securely grounded 7 The yell...

Страница 21: ...ot being supplied to the indoor unit and outdoor unit 2 Match the terminal block numbers and connection cord colors with those of the indoor unit side Erroneous wiring may cause burning of the electri...

Страница 22: ...condition changes please adjust the specification according to national standard 3 Specification of circuit breaker is based on the working condition where ambient temperature of circuit breaker is 40...

Страница 23: ...DC Inverter Multi VRF System 20 Fig 4 26 Fig 4 27...

Страница 24: ...placing the main board of outdoor unit it is necessary to perform test operation and debugging Otherwise unit won t be able to work 2 Test operation and debugging must be performed by professional tec...

Страница 25: ...mmunication wire of IDU is correctly connected After the check connect power and start debugging from progress 01 If the number is then correct press main board s SW3 button to confirm Then the displa...

Страница 26: ...ts 08_ Confirm preheated compressor 08 U0 Display circularly Preheat time for compressor is less than 8 hours Display will be as in the left until the preheat time reaches 8 hours Press main board s S...

Страница 27: ...in this process through the L VALVE 15_ Cooling debugging 15 AC Display circularly Debugging for cooling mode If no malfunction occurs for 50min when compressor is running then the system is certifie...

Страница 28: ...ient temp is 25 35 C 77 95 F in cool mode system s high pressure value will be within 44 53 C 111 127 F In heat mode if ambient temp is above 5 C 23 F system s high pressure value is within 40 52 C 10...

Страница 29: ...or EXV varies within 40 480PLS 15 Communication parameters Communication data Number of IDUs detected by software is the same with the actual number No communication error 16 Drainage system Indoor un...

Страница 30: ...locked and dirty Clean the filter If problem cannot be solved after checking the above items please contact Gree service center and describe the cases and models Following circumstances are not malfun...

Страница 31: ...rossing malfunction of PG motor dU Malfunction of drainage pipe temperature sensor of generator LU Indoor unit s branch is not inconsistent for one to more unit of heat recovery system db Debugging st...

Страница 32: ...of outlet tube temperature sensor of condenser PA Malfunction of drive storage chip of compressor bJ High pressure sensor and low pressure sensor are connected reversely PH High voltage protection of...

Страница 33: ...en main control and DC DC controller U6 Alarm because valve is abnormal C2 Communication malfunction between main control and inverter compressor driver U7 Power grid DRED0 response protection C3 Comm...

Страница 34: ...connection pipe of ODU An Child lock status Ay Shielding status 8 Maintenance and Care Regular check maintenance and care can extend unit s service life Please have specialized person in charge of the...

Страница 35: ...ix oxygen C2H2 or other dangerous gas into the refrigerant circuit Otherwise it may lead to danger Use nitrogen or refrigerant to conduct the tests 9 After sales Service If there s quality defect or o...

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