Gree GMV-36WL/A-T(U) Manual Download Page 107

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DC Inverter Side Discharge VRF

Ⅱ

for North America

105

3 Power Distribution of Unit

3.1 Power distribution of unit

The control logical relationship among parts inside the electric box of unit is showed by the

mongline diagram (CAD source file).

The main loop is showed by bold line (line width: 1mm); the control loop is showed by slim line

(line width: 0.2mm).

Power wiring

board

Filter plate

Drive board

Compressor

Main control board

Temperature sensor, electric

expansion valve, high pressure and

low pressure switch and so on

4-way valve, by-pass valve,

electric heating belt and control

signal

Fan

（

Bold line is the power line and the slim line is the control line

）

Summary of Contents for GMV-36WL/A-T(U)

Page 1: ...DC INVERTER SIDE DISCHARGE VRF Ⅱ FOR NORTH AMERICA ...

Page 2: ...PREPARATION AND NOTICE 65 2 INSTALLATION MATERIALS SELECTION 66 3 INSTALLATION OF OUTDOOR UNIT 68 4 INSTALLATION OF ELECTRONIC EXPANSION VALVE ASSY UNIT WITH EXTERNAL EXV 71 5 INSTALLATION OF REFRIGERANT PIPELINE 71 6 INSTALLATION OF CONNECTION PIPE 75 7 ELECTRIC WIRING 83 8 DEBUGGING OF UNIT 85 MAINTENANCE 92 1 MALFUNCTION LIST 93 2 TROUBLESHOOTING 95 3 POWER DISTRIBUTION OF UNIT 105 4 REMOVAL OF...

Page 3: ...DC Inverter Side Discharge VRF Ⅱ for North America 1 PRODUCT ...

Page 4: ...able for residential and light commercial uses It features high energy efficiency strong anti interference capability long connectable pipe wide operation range good sound quality intelligent capacity regulation complete protection etc 2 1 1 Features 1 Super high energy efficiency The 2nd generation of DC Inverter Multi VRF System adopts DC motor to realize complete direct current and upgrade the ...

Page 5: ...D capacity regulation technology units are able to control the indoor ambient temperature more quickly and reduce the fluctuation of room temperature 7 Complete protection Units are equipped with a series of protection to accurately identify errors and protect the units which has ensured reliable and safe operation 3 Specifications 3 1Outdoor Unit Model GMV 36WL A T U GMV 48WL A T U GMV 60WL A T U...

Page 6: ...gher in actual operation due to environmental change Refrigerant charge volume listed in the table is based on the condition where indoor and outdoor units are at a same level and with no connection pipe Supplementary refrigerant needs to be charged according to actual circumstance 3 2 Operation range Cooling Outdoor temperature 5 48 23 118 F Heating Outdoor temperature 20 27 4 81 F 4 Product Capa...

Page 7: ...U 0 0 1 0 0 GMV 48WL A T U 0 0 1 0 1 GMV 60WL A T U 0 1 0 0 0 4 3Capacity Correction Formula 4 3 1Rated capacity of outdoor unit Model GMV 36WL A T U GMV 48WL A T U GMV 60WL A T U Rated cooling capacity kW 11 14 1 17 6 Btu h 37500 48000 60000 Rated heating capacity kW 12 3 15 8 18 7 Btu h 42000 54000 64000 4 3 2 Correction factor of indoor and outdoor temperature 1 Correction factor of cooling cap...

Page 8: ...00 full load in standard working condition thermostat setting is 16 61 for cooling and 30 86 for heating Variance ratio of heating capacity NOTE m 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 ft 0 33 66 98 131 164 197 230 262 295 328 361 394 427 459 492 5 Principal of Operation Components in flowcharts are presented according to the following table Name Compressor 4 way valve Cut off valve...

Page 9: ...ld Pressure and temperature of the refrigerant will then be lowered by throttle elements before it flows into indoor heat exchangers After exchanging heat with indoor air refrigerant wil become low temperature and low pressure gas again and repeat the circulation so as to realize the cooling effect In heating 4 way valve will be energized to make refrigerant circulate in a reverse direction of coo...

Page 10: ...DC Inverter Side Discharge VRF Ⅱ for North America 8 CONTROL ...

Page 11: ...nd send a signal to main board Main board will pass this signal to controller where the error will be displayed and stop unit from working 2 High low pressure sensor is used to test unit s high low pressure and send real time data to controller which will control each unit s output according to the control logic 3 Temperature sensors are used to test the tube temperature of the unit and send data ...

Page 12: ...or Unit 1 Cooling operation 2 Heating operation 3 Drying operation 4 Operation procedure is the same as that of cooling operation 5 Fan operation 6 The EXV of the indoor unit closes in fan mode so that there is no refrigerant flow in the refrigerant pipe of that indoor unit But the fan of that indoor unit operates ...

Page 13: ...Control Functions 1 3 1Control functions of outdoor unit 1 Include the following contents 2 Compressor capacity output 3 Compressor start up control 4 Outdoor fan control 5 Defrosting control 6 Heating EXV control 7 Subcooling valve control 8 Refrigerant lacking control 1 3 2Control functions of indoor unit 1 Include the following contents 2 Cool ...

Page 14: ... Side Discharge VRF Ⅱ for North America 12 3 Dry 4 Heat 5 Fan 6 Heating temperature compensation 7 Anti freezing 8 Air swing 9 Drainage pump 10 IDU EXV 11 Static pressure level 2 Wired Controller 2 1 Control panel ...

Page 15: ...DC Inverter Side Discharge VRF Ⅱ for North America 13 ...

Page 16: ...DC Inverter Side Discharge VRF Ⅱ for North America 14 Button Graphics ...

Page 17: ... 67 1 57 3 25 2 2 2 Installation method Above is a simple installation method of wired controller Please pay attention to the following 1 Before installation disconnect power of the indoor unit Do not operate when power is connected 2 Pull out the 2 core twisted pair cable from the installation hole on the wall and lead it through the hole on the back plate of wired controller ...

Page 18: ...ith its back plate If caliber of the communication cord is too large which causes difficulty in leading or sticking the cord according to above point 2 and point 5 strip some of the sheath of the communication cable to meet the installation requirement 2 2 3 Removal method Fig 2 1 3 Removal of Wired Controller 2 2 4 Connection of communication cord There are 4 ways to connect wired controller with...

Page 19: ... Inverter Side Discharge VRF Ⅱ for North America 17 Fig 2 2 4 3 One wired controller controls multiple indoor units simultaneously Fig 3 6Two wired controllers control multiple indoor units simultaneously ...

Page 20: ...nction introduction No Button name Function 1 ON OFF Turn on or turn off the unit 2 TURBO Set turbo function 3 MODE Set operation mode 4 Set up down swing status 5 I FEEL Set I FEEL function 6 TEMP Switch temperature displaying type on the unit s display 7 Set health function and air function 8 LIGHT Set light function ...

Page 21: ...an speed 16 Set temperature and time 2 Remote controller YV1L1 No Button name Function 1 ON OFF Turn on or turn off the unit 2 FAN Set fan speed 3 Set temperature and time 4 MODE Set operation mode 5 Set quiet function 6 Set health function and air function 7 Set left right swing status 8 Set up down swing status 9 X FAN Set X FAN function 10 TIMER ON Set timer on function 11 TIMER OFF Set timer o...

Page 22: ...ite but rather controls the units by just sitting in front of a computer This will not only improve the productivity but also reduce cost on human resources property and management Gree Commissioning Tool Kits can monitor and control the 2nd generation of Gree Multi VRF User can monitor and control units by monitoring the computer This software is an efficient tool for the intelligent air conditio...

Page 23: ...arts introduction 4 3 1 List of parts Name Model Material no Remark Gree USB data converter MC40 00 B 30118027 Convert the air conditioning communication into computing communication Gree Commissioning Tool Kits CD ROM DG40 33 A C 36400000003 Include Gree debugger monitoring software USB driver and USB converter configuring software USB wire 40020082 Wire connecting computer s USB interface and co...

Page 24: ...DC Inverter Side Discharge VRF Ⅱ for North America 22 4 3 2 2 Appearance ...

Page 25: ...rface CAN interface exhibits no polarity A and B are equal 8 HBS interface When HBS converter is under HBS communication mode connect air conditioner s HBS data interface HBS interface exhibits no polarity This interface is not yet available for Gree debugger and the monitoring software 9 RS485 interface When RS485 converter is under RS485 communication mode connect air conditioner s RS485 data in...

Page 26: ... responsible for the commissioning of air conditioners can start commissioning by pressing one button according to the commissioning logic of software which will give the commissioning order to units Then commissioning will be started up automatically step by step During the commissioning the corresponding process will be ticked in green on the software interface If any commissioning process is no...

Page 27: ...els Later it will be developed to cover all series of Gree central air conditioners such as multi VRF centrifugal chiller screw type chiller ground source heat pump units modular units fan coiled units close control units etc It can be used by system and controller designers to develop and monitor units or used for maintenance and commissioning 6 Other functions For the convenience of users the so...

Page 28: ...issioning Tool Kits install these programmes Net Framework 4 0 USB Data Converter Access Driver necessary for versions below OFFICE 2007 Gree Debugger 4 4 1 2 Installation flowchart 1 Button Graphics This flowchart describes basically the software installation process See below for details ...

Page 29: ...on process 1 Install Net Framework 4 0 If your computer has installed Net Framework 4 0 or versions above there s no need to install again Otherwise click Install Net Framework 4 0 Extracting files Click and select I have read and accept the license terms Then click Install ...

Page 30: ...DC Inverter Side Discharge VRF Ⅱ for North America 28 Installation is in progress ...

Page 31: ...for North America 29 Click Finish to complete the installation 2 Install Access Driver Before operating Gree commissioning software please first install Access Driver necessary for versions below OFFICE 2007 Click Install Access Driver ...

Page 32: ...DC Inverter Side Discharge VRF Ⅱ for North America 30 Click Next Tick I accept the terms in the License Agreement and then click Next continue the installation ...

Page 33: ...DC Inverter Side Discharge VRF Ⅱ for North America 31 Installation is in progress ...

Page 34: ...tall Gree Debugger Before installing Gree debugger make sure that your computer is installed with Net Framework 4 0 or versions above Then click Install Gree Debugger Click Next Click Browse to select installation folder If no change is needed for the folder click Next to continue the installation ...

Page 35: ...DC Inverter Side Discharge VRF Ⅱ for North America 33 Click Next ...

Page 36: ...scharge VRF Ⅱ for North America 34 Installation is in progress Click Close to complete the installation 4 Install USB Converter Driver If USB converter driver is already installed in your computer this part can be skipped ...

Page 37: ...C Inverter Side Discharge VRF Ⅱ for North America 35 Otherwise click Install USB Converter Driver Then the following installation window will be shown This window will exit after installation is finished ...

Page 38: ...ree USB Data Converter If converter baud rate is needed to be set then converter configuring software must be installed Click Install Gree USB Data Converter Then select the setup language You can choose Chinese simplified Chinese traditional or English Then click OK ...

Page 39: ...erter Side Discharge VRF Ⅱ for North America 37 Click Next Tick I accept the agreement Then click Next to continue installation Click Browse to select your expected installation folder Click Next to continue ...

Page 40: ...DC Inverter Side Discharge VRF Ⅱ for North America 38 Click Browse to change folder Click Next to continue If you want to create s desktop shortcut tick Creat a desktop icon Then click Next to continue ...

Page 41: ...Side Discharge VRF Ⅱ for North America 39 Destiniation location folder and additional task will be shown in the next step If you need to change any of it please click Back If not click Install to start installation ...

Page 42: ... Ⅱ for North America 40 Installaiton is in progress Click Finish to complete the installation 4 4 2 Data monitoring Gree Debugger Start up Gree Debugger On the original interface user can select language and units system Click OK to ...

Page 43: ...DC Inverter Side Discharge VRF Ⅱ for North America 41 confirm the defaulted language and units system and start up the software Select language Select system of units ...

Page 44: ...e to communicate normally with correct COM and protocal then you may click Connect to enter the interface of numbers Otherwise connect in accordance with the connection diagram shown below COM selection the serial port in your computer can be detected automatically You just need to select your desired serial port ...

Page 45: ...tion This is to select the communication method of your units Currently CAN is applicable to the units After the selection click Connnect If units can communicate normally with computer then the interface of numbers will be shown soon Otherwise Connecting will be shown ...

Page 46: ... icon and system icon Display zones of indoor unit information and errors can be dragged up and down at the dividing lines As to the display zone of outdoor modules information it can show information of only one module and hide information of others two modules are defaulted to be shown Menu bar can be hidden by clicking icon Status bar shows the current time and period for data collection ...

Page 47: ... 4 3 Project debugging Click icon of Debug on the menu bar and the interface will be switched to project debugging where auto debugging will be started from up to down and from left to right Note Debugging function is only applicable to a single system network Devices info Menu bar Error display System info Outdoor modules info IDU info Status bar Title bar ...

Page 48: ...es debugging is completed If OK button is displayed it means user needs to judge whether to continue debugging or not Click icon and relevant information will be shown for your reference Click Close to close the pop up For No 3 Confirm ODU Basic Module NO and No 4 Confirm IDU NO the current number of units under debugging will be displayed See the following marked with circle For No 8 Compr Prehea...

Page 49: ...blem found during debugging Debugging will not be completed unless problem is solved after problem is solved step without OK button will switch to the next step automatically otherwise user needs to click OK to continue Click icon and relevant information detected in this step will be displayed for your reference in order to solve problems Click Close to close the pop up ...

Page 50: ... alarm you can click Skip In other cases Skip button is null Step 11 13 and 14 are reserved steps And step 13 14 15 and 16 are steps in parallel only one of the four will be selected according to actual needs 4 4 4 Control units Click icon of Setting on menu bar and select parameter settings which include Gateway Settings IDU Settings System Settings Project Number Conflict In case there is projec...

Page 51: ...he indoor units that need setting in the IDU selection zone or you may click Select All to select all of them or Select Inverted to select none of them After selection the current values of the corresponding parameters will be displayed in the zone of settings Click Set and then click in the pop up dialog box to select values Click Set and ...

Page 52: ... then the corresponding order will be sent to units If setting is successful it will be displayed at the current values 4 4 5 Other functions 1 Capture screen Click icon of Capture Screen to print the interface If you want to open the interface click Open ...

Page 53: ...DC Inverter Side Discharge VRF Ⅱ for North America 51 2 Search for database folder Click icon of Open Data Folder on the menu bar to open database folder ...

Page 54: ...nversion of pressure value Click icon of Others on the menu bar and then click Display Settings to select High Low Pressure Value and Refrigerant Type Select Temperature and the pressure parameter displayed on the interface will be temperature Select Pressure ...

Page 55: ...type will affect the pressure parameter displayed on the interface 4 Database saving of multiple systems Click icon of Others on the menu bar and click Database Save Settings to select which system that needs to save database Because there is a large quantity of data in a network that contains multiple systems data of only one system can be saved ...

Page 56: ...ing of database should be set before the software starts monitoring see below interface Click Change database saving path and click Browse to change the saving path Click Rebuild Database to rebuild the database folder You can also stop monitoring and turn back to the connection interface to change saving path or rebuild database during monitoring ...

Page 57: ... USB Converter 1 Usage of converter Gree commissioning software should be connected with CAN interface when converter is used For air conditioners with a single system connect D1 and D2 interfaces of the wiring board For air conditioners with multiple systems connect G1 ...

Page 58: ...ress the button SET on the converter to realize the conversion among HBS CAN and RS485 interfaces You can check the setting through the function LEDs Notice If it s the first time your PC uses Gree USB data converter in order to prevent Gree USB data converter from being mistaken by your computer as other devices and make sure your mouse can work well it is necessary to turn off the Serail Enumera...

Page 59: ...DC Inverter Side Discharge VRF Ⅱ for North America 57 Step 2 In the pop up window select Device Manager in the left column and then find Port COM and LPT in the right column Click its ...

Page 60: ...rter Side Discharge VRF Ⅱ for North America 58 Step 4 Right click USB Serial Port COM6 and then click Properties The dialog box of properties will then pop up Step 5 Then click Port Settings in the dialog box ...

Page 61: ... Inverter Side Discharge VRF Ⅱ for North America 59 Step 6 Click Advanced and then a new dialog box will pop up Find the Serial Enumerator in the miscellaneous options and cancel the tick Click OK to exit ...

Page 62: ...SB interface automatically Ex factory defaulted baud rate unit bps AC is connected with Baud rate of air conditioner interface Baud rate of USB interface CAN 20000 50000 self adaptive 115200 HBS 57600 38400 RS485 9600 9600 Baud rate look up table for RS485 interface unit bps RS485 interface 4800 9600 19200 38400 57600 115200 USB interface 4800 9600 19200 38400 57600 115200 Baud rate look up table ...

Page 63: ...ication serial port and language in the System Settings Select the function that is to be set and the corresponding baud rate refer to the look up table in the Converter Setup Then click Set If you want to restore ex factory settings click Default to restore the default settings ...

Page 64: ...DC Inverter Side Discharge VRF Ⅱ for North America 62 Click Get to get the current setting details of converter ...

Page 65: ...DC Inverter Side Discharge VRF Ⅱ for North America 63 Switchover of Software Languages ...

Page 66: ...DC Inverter Side Discharge VRF Ⅱ for North America 64 INSTALLATION ...

Page 67: ...ystem Pipes are more likely to be blocked air conditioning performance is reduced compressor wear is increased or even hinder the normal operation of the system and burn the compressor 2 Nitrogen is not filled into the refrigerant pipe or insufficient Nitrogen is filled before welding Pipes are more likely to be blocked air conditioning performance is reduced compressor wear is increased or even h...

Page 68: ...stallation space for IDU is insufficient Since there is a lack of space for maintenance and checking indoor decoration might need to be damaged during such operation 16 The IDU or the location of the air outlet or return air inlet is not designed reasonably The air outlet or return air inlet may be short circuited thus affecting the air conditioning performance 17 The ODU is improperly installed T...

Page 69: ...Φ9 52 3 8 0 8 1 32 0 Φ12 70 1 2 0 8 1 32 0 Φ15 9 5 8 1 0 1 25 0 Φ19 05 3 4 1 0 1 25 0 6 After the inner part of the copper pipe is cleaned and dried the inlet and outlet must be sealed tightly by using pipe caps plugs or adhesive tapes 2 2 Condensate water pipe 1 Pipes that can be used for air conditioner drainage include water supplying UPVC pipe PP R pipe PP C pipe and HDG steel pipe 2 All relev...

Page 70: ...tense magnetic field or strong interference it is necessary to use shielded wire 2 5 Power cable Only copper conductors can be used as power cables The copper conductors must meet relevant national standard and satisfy the carrying capacity of unit 2 6 Hanger rod and support 1 Hanger rod M8 or M10 2 U steel 14 or above 3 Angle steel 30mm 30mm 3mm or above 4 Round steel Φ10mm or above 3 Installatio...

Page 71: ...air of outdoor unit will not flow back and there is sufficient space around the unit for maintenance 2 The installation site must be well ventilated to ensure sufficient air intake and discharge Make sure there is no obstacle at the air inlet and air outlet If there is any obstacle please remove it 3 The installation site shall be able to withstand the weight of outdoor unit and capable for soundp...

Page 72: ...ne dimension and position of installation hole When carrying the outdoor unit hang the unit in four directions with two sufficient ropes In order to avoid excursion from the center the angel of ropes must be smaller than 40º during hanging and moving Unit mm inch Model A B C D E GMV 36WL A T U GMV 48WL A T U 900 35 7 16 340 13 3 8 1345 53 572 22 1 2 378 15 GMV 60WL A T U 940 37 320 12 9 16 1430 56...

Page 73: ...EXV The EXV of indoor unit is built in 5 Installation of Refrigerant Pipeline 5 1Allowable Length and Height Difference of Connection Pipe Y type branch joint is adopted to connect indoor and outdoor units Connecting method is shown in the figure below NOTICE Equivalent length of one Y type branch is 0 5m 1 5 8feet Allowab ...

Page 74: ...anch to the farthest indoor pipe 40 131 L2 L3 d Height difference between ODU and IDU ODU at upper side 50 164 ODU at lower side 40 131 Height difference between IDUs 15 49 5 2 Dimension of Pipe Main Pipe from ODU to the 1st Indoor Branch Dimension of pipe from ODU to the 1st indoor branch will be determined by the dimension of outdoor connection pipe Dimension of outdoor connection pipe Basic mod...

Page 75: ...ty of outdoor unit prevails Refrigerant system Total capacity of downstream indoor units C Btu h Model Y type branch C 68200 FQ01A 68200 C 102400 FQ01B 102400 C 238800 FQ02 238800 C 460600 FQ03 460600 C FQ04 5 4 Dimension of Pipe between Indoor Branches Select pipe between indoor branches according to the capacity of downstream indoor units if the capacity exceeds that of the outdoor unit capacity...

Page 76: ...mension of pipe between indoor branch and IDU should be consistent with the dimension of indoor pipe Fig 9 Rated capacity of IDU C Btu h Gas pipe mm inch Liquid pipe mm inch C 9600 Φ9 52 Φ3 8 Φ6 35 Φ1 4 9600 C 17000 Φ12 7 Φ1 2 Φ6 35 Φ1 4 17000 C 48000 Φ15 9 Φ5 8 Φ9 52 Φ3 8 48000 C 55000 Φ19 05 Φ3 4 Φ9 52 Φ3 8 55000 C 96000 Φ22 2 Φ7 8 Φ9 52 Φ3 8 NOTICE If the distance between IDU and its nearest br...

Page 77: ...e position 6 1Flaring Process 1 Use pipe cutter to cut the connection pipe in case it is unshaped 2 Keep the pipe downward in case cutting scraps get into the pipe Clear away the burrs after cutting 3 Remove the flared nut connecting indoor connection pipe and outdoor unit Then use flaring tool to fix the flared nut into the pipe as shown in Fig 10 4 Check if the flared part is flaring evenly and ...

Page 78: ...ic tape 2 Connection pipe should be supported by a bearer rather than the unit 3 The bending angle of piping should not be too small otherwise the piping might have cracks Please use a pipe bender to bend the pipe 4 When connecting IDU with connection pipe do not pull the big and small joints of IDU with force in case the capillary tube or other tubes have cracks and cause leakage Fig 13 Fig 14 Pi...

Page 79: ...raight pipe Use a soldering gun to unsolder straight pipe 1 and straight pipe 2 Install connection pipe 1 and connection pipe 2 to the corresponding position and then seal the apertures with welding rod First weld the liquid side connection pipe and then weld the gas side connection pipe During welding it s necessary to use wet gauze to wrap up the two cut off valves Make sure the flame won t burn...

Page 80: ...Fig 18 2 Y type branch has several pipe sections with different dimension which facilitates to match with various copper pipes Use pipe cutter to cut in the middle of the pipe section that is of proper dimension and remove burrs as well See Fig 19 3 Y type branch must be installed vertically or horizontally Fig 19 ...

Page 81: ...for insulation from the air 2 Joints of indoor and outdoor unit should be wrapped with insulating material and leave no gap between pipe and wall See Fig 20 Fig 20 3 When wrapping the tape the later circle should cover half of the former one Don t wrap the rape too tight otherwise the insulation effect will be weakened 4 After wrapping the pipe apply sealing material to completely seal the hole on...

Page 82: ...l pieces for transportation must be removed except for GMV 60WL A T U Then fasten the binding nuts again and wrap back soundproofing cotton If unit runs with metal pieces fitting on compressor will shake abnormally and unit s operating life will be shortened 6 3 Vacuum Pumping Refrigerant Adding Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation There is no ext...

Page 83: ... and length of field installed liquid pipe 3 Record the amount of additional refrigerant for convenience of after sales service 2 Calculation of the amount of additional refrigerant Calculation method of the quantity of additional refrigerant based on liquid pipe Quantity of additional refrigerant length of liquid pipe X quantity of additional refrigerant per meter 39 3 8inch Diameter of liquid pi...

Page 84: ...ype GMV ND12PLS A T U Duct type GMV ND09PLS A T U Duct type GMV ND09PLS A T U Liquid pipe No A B C D Pipe size Φ9 52mm Φ3 8inch Φ9 52mm Φ3 8inch Φ9 52mm Φ3 8inch Φ6 35mm Φ1 4inch Length 10m 32 3 4feet 5m 16 3 8feet 5m 16 3 8feet 5m 16 3 8feet No a b c d Pipe size Φ9 52mm Φ3 8inch Φ6 35mm Φ1 4inch Φ6 35mm Φ1 4inch Φ6 35mm Φ1 4inch Length 3m 9 3 4feet 3m 9 3 4feet 2m 6 5 8feet 1m 3 1 4feet Total len...

Page 85: ...ower of the entire system The air switch should include magnetic trip 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 yellow green wire inside the unit is a ground wire Do not cut it off or secure it with tapping screws otherwise it will lead to electri...

Page 86: ...ation situation There are two wiring diagrams for power cord 1 Real line method 2 Broken line method Please select it based on the actual installation situation 7 2 Power Cable Wire Gauge and Circuit Breaker Selection Model Power supply Max Fuse Size Fusible Max A Max Ckt Bkr Size Disjoncteur Max A Min Circuit Ampacity A GMV 36WL A T U 208 230V 60Hz 50 50 32 GMV 48WL A T U 208 230V 60Hz 60 60 37 G...

Page 87: ...ing volume according to the length of pipe of system and pre charge the refrigerant If refrigerant can t be added any more when the required refrigerant charging volume hasn t been reached record to refrigerant volume which still needs to be added and continue to add refrigerant during run test operation process Please refer to below run test for the refrigerant adding stage during run test proces...

Page 88: ... L7 Blink No master indoor unit Display will be on for 1min during which master IDU can be set manually If not system will set the unit with minimum IP address as the master IDU db On 02 On OC On Allocation is finished 2s later next step starts 03_ Confirm the quantity of ODU db On 03 On 01 Blink System is confirming 1s later next step starts db On 03 On OC On System finishes confirmation 2s later...

Page 89: ...tep will start 2s later If the ratio is out of range unit will display as below db On 05 On CH On Rated capacity ratio of IDU is too high Change the combination way of IDU and ODU to make the ratio within range And restart debugging from progress 01 db On 05 On CL On Rated capacity ratio of IDU is too low Change the combination way of IDU and ODU to make the ratio within range And restart debuggin...

Page 90: ...n 8 hours Display will be as in the left until the preheat time reaches 8 hours Press main board s SW7 button to confirm manually that the preheat time has reached 8 hours Then start next step Note Compressor may get damaged if it is started without 8 hours of preheat time db On 08 On OC On Compressor has been preheated for 8 hours 2s later next step starts 09_ Refrigerant judgments before startup...

Page 91: ...b On 12 On AP Blink Ready for units to start debugging Press main board s SW7 button to confirm startup of debugging 2s later main board will display as below db On 12 On AE On Startup is confirmed After displaying for 2s system will choose 15_Cooling debugging or 16_Heating debugging according to ambient temperature If the project requests to add refrigerant but it is not complemented before debu...

Page 92: ...s within 65 90 149 194 and at least 10 50 higher than the high pressure saturation temp 3 Defrosting temp In cool mode defrosting temp is 4 10 39 50 lower than system s high pressure value In heat mode defrosting temp is about 2 36 different from system s low pressure value 4 System high pressure In cool mode the normal high pressure value is within 20 55 68 131 According to the change of ambient ...

Page 93: ...ll be 1 7 34 45 lower than the outlet temp and 4 9 39 48 higher than the low pressure value For a same IDU in heat mode the inlet temp will be 10 20 50 68 lower than the outlet temp 13 14 Opening angle of indoor EXV PLS GMV 36WL A T U GMV 48WL A T U In cool mode the opening angle of indoor EXV varies within 70 480PLS In heat mode the opening angle of indoor EXV varies within 70 480PLS GMV 60WL A T...

Page 94: ...DC Inverter Side Discharge VRF Ⅱ for North America 92 MAINTENANCE ...

Page 95: ... of outdoor unit Definition LED1 It displays 00 for hot water mode as for DC Inverter Side Discharge VRF LED2 It displays AC for AC mode cooling and cooling OFF mode for indoor unit and displays AH for heating and heating OFF mode for indoor unit LED3 It displays on or off status of compressor and malfunction code It displays ON when the compressor is operating and OFF when the compressor stops op...

Page 96: ...for inverter compressor PP AC current protection for inverter compressor U0 Preheat time is not enough for compressor U2 Capacity code of outdoor unit wrong setting of jumper cap U4 Insufficient refrigerant protection U5 Wrong address for the driven board of compressor U6 Alarm due to abnormal valve U8 Malfunction of pipeline for indoor unit U9 Malfunction of pipeline for outdoor unit UC Setting f...

Page 97: ... Limit setting for the maximum ouput capacity n6 Engineering series number inqury for indoor unit n7 Malfunction inquiry n8 Parameters inquiry nA Heat pump unit nH Heating only model nC Cooling only model nE Negative code nF Fan model 2 Troubleshooting Troubleshooting principle 1 Communication malfunction Communication malfunction Check whether indoor unit and outdoor unit is power supplied Energi...

Page 98: ... of outdoor unit well E liminate obstacles and sundries Measure the circumstances of fan motor and signal input Check whether the indoor swing blade is open completely Measure the circumstances of swing motor and signal input Check whether the electronic expansive value for indoor unit and outdoor unit can operate normally Engage valve and coil Blockage for system pipeline Mainly check the air inl...

Page 99: ...of outdoor unit well Eliminate obstacles and sundries Measure the circumstances of fan motor and signal input Check whether the indoor swing blade is open completely Measure the circumstances of swing motor and signal input Check whether the electronic expansive value for indoor unit and outdoor unit can operate normally Engage valve and coil Blockage for system pipeline Mainly check the air inlet...

Page 100: ...oor fan can operate Cover the panel for outdoor unit well Eliminate obstacles and sundries Measure the circumstances of fan motor and signal input Check whether the indoor swing blade is open completely Measure the circumstances of swing motor and signal input Check whether the electronic expansion valve for indoor unit and outdoor unit can operate normally Engage valve and coil Blockage for syste...

Page 101: ... sensor Check whether plug of sensor is connected with socket correctly Confirm whether the plug is connected correctly Replace main board of outdoor unit YES NO Measure whether the output value DC voltage for socket of main board of outdoor unit is normal Replace pressure sensor YES NO 7 Unit and main board can t be energized Unit and main board can t be energized Measure whether voltage between ...

Page 102: ... drive PFC protection for compressor malfunction of drive temperature sensor for compressor circuit malfunction of drive current detection for compressor Wired controller displays P0 LED3 dual 8 nixie tube displays P3 P4 P7 or PC Replace main board Work normally 10 Drive IPM overtemperature protection for compressor Wired controller displays P0 LED3 dual 8 nixie tube displays P8 Whether two IPM mo...

Page 103: ...ain board Work normally no Replace compressor Work normally yes Adjust the sequence of wire for compressor Whether the wiring terminal for compressor is loose Connect the wires of compressor tightly yes no no Wired controller displays P0 12 Failure startup for inverter compressor Wired controller displays P0 LED3 dual 8 nixie tube displays PJ Replace main board Work normally Replace compressor Wor...

Page 104: ...es for PFC induction is correct Reinsert the wires for PFC Replace main board yes no Work normally 14 Malfunction of memory chip for inverter compressor LED3 dual 8 nixie tube displays PA Whether the memory chip is inserted inversely yes Work normally Adjust the memory chip Whether the memory chip is loose Insert the memory chip tightly yes no no Wire controller displays P0 Replace main board ...

Page 105: ...ly yes Adjust the sequence of wire for compressor Whether the wiring terminal of compressor is loose Connect the wires of compressor tightly yes no no Wired controller displays P1 16 High pressure protection for driven DC bus bar of compressor low pressure protection for driven DC bus bar of compressor Wired controller displays P2 LED3 nixie tube displays PH or PL Whether the power voltage is 185V...

Page 106: ...3 dual 8 nixie tube displays PP Replace main board Work normally 18 Communication malfunction between main contoller and driver of inverter compressor Wired controlled displays C2 LED3 dual 8 nixie tube displays C2 Check whether the main control CPU board is inserted well no Work normally Replace main board yes Insert the CPU board well ...

Page 107: ...CAD source file The main loop is showed by bold line line width 1mm the control loop is showed by slim line line width 0 2mm Power wiring board Filter plate Drive board Compressor Main control board Temperature sensor electric expansion valve high pressure and low pressure switch and so on 4 way valve by pass valve electric heating belt and control signal Fan Bold line is the power line and the sl...

Page 108: ... inside the IPM module They are controlled by PWM wave and then bring the pressure of DC bus bar to different stator windings of compressor at different stage and then generate current on the stator Meanwhile magnetic field will be generated on the stator winding and push the operation of rotor and then drive compressor to operate PFC module Four diodes and two MOS pipe are intergrated inside the ...

Page 109: ...DC Inverter Side Discharge VRF Ⅱ for North America 107 3 3 Circuit diagram GMV 36WL A T U GMV 48WL A T U GMV 60WL A T U ...

Page 110: ...en discharge it Electronic expansion valve Throttling device It transforms high pressure refrigerant liquid into low pressure steam 4 way valve It changes the flow direction of refrigerant for switching between cooling and heating Oil separator It stays between discharge outlet of compressor and inlet of condenser It used for separating the lubricant oil of compressor when the high temperature and...

Page 111: ...let of compressor It used for separating low temperature and low pressure refrigerant High pressure liquid storage tank It used for storing the superfluous high pressure refrigerant liquid during cooling process Solenoid valve Cut off valve It used for connecting indoor unit and outdoor unit and used for maintenance and installation ...

Page 112: ...to Operation Instruction 1 Remove top cover Loose the screws fixing the top cover with screwdriver Hold the top cover upwards and then put it on the floor flatly 2 Remove front side plate sub assy Loose the screw fixing the front side plate with screwdriver Hold the front side plate upwards and then put it on the floor flatly 3 Remove front panel and grille Loose the screws fixing the front panel ...

Page 113: ...ove the rear side plate Removal operation for blade Remark Before removing the motor please make sure that the unit is disconnected with the power Process Photo Operation Instruction 1 Remove grille Loose screws fixing the panel with screwdriver Then remove the grille 2 Remove blade Loosen nuts fixing the blade with wrench Then remove the blade and put it on the floor flatly ...

Page 114: ...e screws fixing the motor with screwdriver then remove the power cord of motor Take out the damaged motor 4 Install motor Replace the motor tighten screws with screwdriver and then connect teh power cord of motor 5 Assemble unit Assemble the unit in the the converse sequence ...

Page 115: ...iixng the compressor with screwdriver Then pull out the power cord Note When removing the power cord make marks for different color power cords and corresponding wiring terminals for wrong terminal 2 Disconnect compressor and connected pipeline Weld suction pipe and discharge pipe of compressor then pull out the connection pipe from the compressor Note During welding process do not let the flame b...

Page 116: ...damage nearby pipelines and other parts 5 Fix the new compressor at the chassis After replacing the compresor fix the nuts at the bottom of compressor 6 Connect suction pipe and discharge pipe of copressor and pipeline of system again Weld the connection pipe of compressor connect the pipeline and compressor Note During welding process do not let flame burn out other parts ...

Page 117: ...the power cord well again Note When connecting the power cord make marks for different color power cords and corresponding wiring terminals 8 Check and open the upper cover plate Check whether the pipeline is connected well Check whetehr all parts and connection wires are connected well If there s no problem after checking install front and rear cover plates ...

Page 118: ... Photo Operation Instruction 1 Disconnect the coil of 4 way valve from the 4 way valve Remove the coil of 4 way valve at first 2 Disconnect the 4 way valve and connection pipeline Weld those 4 connection spots on 4 way valve and then pull out the connection pipe Note During welding process do not let the flae burn out other parts 3 Replace 4 way valve Replace 4 way valve Note During welding proces...

Page 119: ...lease make sure that there s no refrigerant in th pipeline of system and the power is disconnected Process Photo Operation Instruction 1 Disconnec the electronic expansion valve from the pipeline Remove the coil of electroc expansion valve at first Weld the connection pipe for expansion valve and then pull out the connection pipe Note During welding process do not let flame burn out other parts 2 ...

Page 120: ...or Remark Before removing the gas liquid separator please make sure that there s no refrigerant inside the pipeline of system and disconnect the power Process Photo Operation Instruction 1 Disconnect inlet pipe and exit pipe of gas liquid separator Weld those two connection spots on the gas liquid separator and then pull out the connection pipe Note During welding process do not let flame burn out...

Page 121: ...g welding process do not let flame burn out other parts Removal operation for plate heat exchanger Remark Before removing the plate heat exchanger please make sure that there s no refrigerant inside the pipeline of system and disconnect the power Process Photo Operation Instruction 1 Twist off two nuts fixing the plate heat exchanger with wrench Twist off two nuts fixing the plate heat exchanger w...

Page 122: ...spots on the plate heat exchanger and then pull out the connection pipe Note During welding process do not let flame burn out other parts 3 Replace plate heat exchanger Replace plate heat exchanger 4 Replace gas liquid separator Weld the pipe connected with plate heat exchanger Note During welding process do not let flame burn out other parts ...

Page 123: ... pump to the detection joint of gas valve and liquid valve c After vacuum pumping for 4h check whether the vacuum degree is reached to 0 1MPa or above If not there may be gas leakage Please perform the leakage inspection again If there s no gas leakage please vacuum pump for another 2h e If the required vaccum degree can t be satisfied after vacuum pumping for two times there are water inside the ...

Page 124: ...quid pipe 3 Record the amount of additional refrigerant for convenience of after sales service Calculation of the amount of additional refrigerant Calculation method of the quantity of additional refrigerant based on liquid pipe Quantity of additional refrigerant length of liquid pipe X quantity of additional refrigerant per meter 39 3 8inch Diameter of liquid pipe mm inch Φ22 2 Φ7 8 Φ19 05 Φ3 4 Φ...

Page 125: ...nch Φ6 35 mm Φ1 4inch Φ6 35 mm Φ1 4inch Length 3m 9 3 4feet 3m 9 3 4feet 2m 6 5 8feet 1m 3 1 4feet Total length of each liquid pipe Φ9 52 A B C a 10 5 5 3 23m 75 1 2 feet Φ6 35 D b c d 5 3 2 1 11m 36feet NOTICE Liquid pipe that is within 20m 65 5 8 feet doesn t need to be added with refrigerant Therefore the minimum quantity of additional refrigerant 23 20 0 054 11 0 022 0 404kg 14oz 5 3 2 Operati...

Page 126: ...therwise it may cuase personal injury or property damage due to explosion 5 3 Airtightness test 5 3 1 Importance of airtightness test The airtightness of VRF system is the leak tightness of the pipeline for refrigerant which the guarantee for safe and reliable operation The leakage of refrigerant may affect the operation of air conditioner seriously or even damage compressor and then lead to break...

Page 127: ...nge for R410A should be 4 5MPa above 3 5MPa above for R22 refrigerant system 2 Record the data on manometerk ambient temperature and test time at the same time 3 Pressure modification when temperature changes 1 the temperature will change 0 01MPa correspondingly 4 Pressure should be kept the same 5 If it needs to keep pressure for a long time decrease the pressire lower than 0 55MPa pr below Long ...

Page 128: ... Inverter Side Discharge VRF Ⅱ for North America 126 6 Exploded View of Unit and Parts List Exploed view for outdoor unit and parts list 1 Model GMV 36WL A T U GMV 48WL A T U GMV 60WL A T U Exploded view ...

Page 129: ...70280206 1 14 Sensor Sub Assy 39008000061G 1 39008000061G 1 15 Fan Motor 1570411501 1 1570280201 1 16 Front Grill 01574100009 2 01572800003 2 17 Cabinet 01514100002P 1 01514100013P 1 18 Front Side Plate 01314100012P 1 01314100082P 1 19 Handle 26235253 1 26904100016 1 20 Front Connection Board 01344100002P 1 01314100082P 1 21 Diversion Circle 10474100001 2 10474100003 2 22 Axial Flow Fan 1043410000...

Page 130: ...13 1 007023000001 1 46 Discharge Charge Valve 07133771 1 07133771 1 47 Electronic Expansion Valve 07334447 1 43044100172 1 48 Electric Expand Valve Fitting 4304413205 1 4304413220 1 49 Electronic Expansion Valve 07334390 1 43044100173 1 50 Electric Expand Valve Fitting 4304413220 1 4304413205 1 51 Low Pressure Survey Valve Sub Assy 07334100067 1 07334100063 1 52 Cut off Valve 07130239 1 07130239 1...

Page 131: ...JF00302320 ...

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