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TGM GRIT03A Service Manual

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ROOFTOP PACKAGED
CAPACITY RANGE:10.5~69.0kW (35800~235500Btu/h)
OPERATION RANGE:COOLING:18~48° C
HEATING:-10~24° C

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Summary of Contents for TGM GRIT03A

  • Page 1 ROOFTOP PACKAGED CAPACITY RANGE:10.5~69.0kW (35800~235500Btu/h) OPERATION RANGE:COOLING:18~48° C HEATING:-10~24° C...

  • Page 2: Table Of Contents

    Contents PRODUCT INTRODUCTION ..................2 1 MODELS LIST ......................2 3 FUNCTION ....................... 3 4 PRODUCT DATA ..................... 4 4.1 PRODUCT DATA AT RATED CONDITION ..............4 4.2 OPERATION RANGE ..................... 7 4.3 ELECTRICAL DATA ....................... 8 5 PIPING DIAGRAM ....................8 UNITS CONTROL .....................
  • Page 3 6.1 DISPLAY OF ERROR CODE ..................25 INSTALLATION ......................29 1 UNITS INSTALL ..................... 29 1.1 INSTALLATION POSITIONS ..................29 1.2 MATTERS NEED ATTENTION ..................29 1.3 DIMENSION ......................... 33 2 DRAIN PIPING WORK ................... 37 2.1 INSTALLATION PROCEDURE ..................37 2.2 MATTERS OF ATTENTION ..................
  • Page 4 ROOFTOP PACKAGED PRODUCT...

  • Page 5: Product Introduction

    1 MODELS LIST Power Model Nominal Supply Capacity Appearance Refrige Product (V, Ph, Model Name (Ton) rant Code 220~240V R410A GRIT03A EJ51000660 , 1Ph, 50/60Hz 220~240V R410A GRIT05A EJ51000740 , 1Ph, 50/60Hz 220~240V R410A GRIST05B EJ51000650 , 3Ph, 60Hz 220~240V...

  • Page 6: Function

    ROOFTOP PACKAGED Notes: ① Above pictures may be different from actual model. ② 1Ton =12000Btu/h = 3.517kW. 3 FUNCTION Function Description OPERATING EFFICIENCY All units provide high operating efficiencies and have a minimum SEER of 16.0 or above. Grooved copper tubes and enhanced aluminum fin construction improves heat transfer for EXCLUSIVE COIL DESIGN maximum efficiency and durability.

  • Page 7: Product Data

    ROOFTOP PACKAGED 4 PRODUCT DATA 4.1 PRODUCT DATA AT RATED CONDITION Model GRIT03A GRIT05A Btu/h 35800(13650-42660) 66500(20500-66500) Cooling 10.5(4.0-12.5) 19.5(6.0-19.5) Total Capacity Btu/h 39250(17070-46100) 70000(27300-73400) Heating 11.5(5.0-13.5) 20.5(8.0-21.5) Power supply V-Hz-Ph 220-240V-50/60Hz-1Ph 220-240V-50/60Hz-1Ph Cooling Power input Electrical Heating Data Cooling 13.5...
  • Page 8 ROOFTOP PACKAGED Model GRIT03A GRIT05A Outline dimension 1450×1120×815 1450×1120×815 (W×D×H) Dimension Package dimension 1463×1133×860 1463×1133×860 (W×D×H) Net weight Weight Gross weight 20'GP Loading quantity 40'GP 40'HQ Model GRIT05B GRIT10B Btu/h 71700(20500-75100) 116000(34100-119400) Cooling 21.0(6.0-22.0) 34.0(10.0-35.0) Total Capacity Btu/h 75100(27300-78500) 119400(37500-122800) Heating 22.0(8.0-23.0)
  • Page 9 ROOFTOP PACKAGED Model GRIT05B GRIT10B 1.29 2.34 Fins per Inch(FPI) Permissible Excessive Operating Pressure for the Discharge Side Permissible Excessive Operating Pressure for the Suction Side Cooling ° C 18-48 18-48 Operation temp Heating ° C -10-24 -10-24 Filter Outline dimension 1450×1120×815 1450×1120×1215...

  • Page 10: Operation Range

    ③ The technical parameters are changed along with the products improvement; please refer to the nameplate of the unit for actual data. ④ Above data is subject to change without notice. 4.2 OPERATION RANGE GRIT03A,GRIT05A, GRIT05B ,GRIT10B, GRIT15B, GRIT20B Item Outdoor Condition (DB °C) Cooling...

  • Page 11: Electrical Data

    4.3 ELECTRICAL DATA Condenser Supply Blower Compressor Breaker Min. Power Fan Motors Motor Capacity Supply Cord Model Power Supply Qty. V/Ph/Hz − GRIT03A 220-240V, 1Ph,50/60Hz 13.0 GRIT05A 220-240V, 1Ph,50/60Hz 19.0 10.0 GRIT05B 220-240V, 3Ph,60Hz 28.0 10.0 GRIT10B 220-240V, 3Ph,60Hz 36.0 10.0...
  • Page 12 ROOFTOP PACKAGED CONTROL...

  • Page 13: Units Control

    ROOFTOP PACKAGED UNITS CONTROL 1 OPERATION FLOWCHART 1.1 COOLING OPERATION Power Open unit running at cool mode Indoor fan run Satisfying open Comp. condition Comp. and outdoor fan run Temp of indoor ≤Set temp Comp. and outdoor fan stop Comp. stop for 3 min...

  • Page 14: Heating Operation

    ROOFTOP PACKAGED 1.2 HEATING OPERATION Power Open unit running at heat mode Satisfying open Comp. condition Comp. and outdoor fan run Avoid cool wind (only when comp start) Temp of indoor ≥Set temp Comp. and outdoor fan stop Comp. stop for 3 min...

  • Page 15: Wireless Remote Controller

    ROOFTOP PACKAGED 2 WIRELESS REMOTE CONTROLLER Notes: The wireless remote controller is an Optional Fitting 2.1 OPERATION AND DISPLAY VIEW Table 2-2-1 Operation instruction of wireless remote controller Name Function Description Signal Signal transmitter transmitter ON/OFF Press this button and the unit will be turned on; press it once more, and the unit will be turned off. button When turning off the unit, the Sleep function will be canceled, but the presetting time is still remained.
  • Page 16 ROOFTOP PACKAGED Name Function Description Press this button to set up the swing angle, which circularly changes as below: When the guide louver starts to swing up and down, if SWING functions is canceled, the air guide SWING louver will stop and remains at the current position. UP/DOWN Indicates the guide louver swings up and down among those five directions.(Simplified SWING button...

  • Page 17: Wired Controller

    ROOFTOP PACKAGED 3 WIRED CONTROLLER 3.1 DISPLAY VIEW Figure 2-3-1 Appearance of wired controller Figure 2-3-2 LCD display of wired controller Table 2-3-1 Instruction to LCD Display Display Introduction Automatic mode (under auto mode, the indoor unit will select its operating mode Auto according to the variation of room temperature) Cool...

  • Page 18: Operation View

    ROOFTOP PACKAGED Display Introduction Health Display when health function is set Absent Display when absent function is set I-Demand Display when I-DEMAND function is set WIFI WIFI function icon Child-lock Child-lock status, display when child-lock function is set Up&down swing Display when up and down swing function is set Slave wired Icon of slave wired controller, it will display when slave wired controller is set...
  • Page 19 ROOFTOP PACKAGED 3.2.2 Instruction to Function of Buttons Table 2-3-2 Instruction to buttons of wired controller Description Functions  Function selection and canceling;  Press it for 5s to view the ambient temperature; press Mode button to Swing/Enter select viewing outdoor ambient temperature or indoor ambient temperature.

  • Page 20: Operation Instructions Of Special Functions

    ROOFTOP PACKAGED 4 OPERATION INSTRUCTIONS OF SPECIAL FUNCTIONS 4.1 Setting of Filter Clean Reminder Function When unit is on, press Function button to switch to filter clean reminder function. The icon will blink and then enter setting of filter clean reminder function. Timer zone displays the set pollution level and you can press ▲...

  • Page 21: Lock Function

    ROOFTOP PACKAGED (1) If cleaning time is not reached, no mater the setting is changed or not, the accumulated operating time won’t be recalculated when pressing Swing/Enter button; (2) If cleaning time is reached, in unit on or off state, will blink every 0.5s for reminder.

  • Page 22: Switch Between Fahrenheit And Centigrade

    ROOFTOP PACKAGED 4.5 Switch between Fahrenheit and Centigrade Under off state of the unit, press Mode and ▼ buttons at the same time for 5s to switch between Fahrenheit and Centigrade. 4.6 Enquiry of Ambient Temperature Under off or on state of the unit, press Swing/Enter for 5s to view the ambient temperature. In this case, timer zone displays ambient temperature type 01 or 02.
  • Page 23 ROOFTOP PACKAGED sensor at wired controller in heating and auto mode. 4.8.2 Displaying setting of freeze protection error code Under debugging state, press Mode button to adjust to “02” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections: (1) Displayed (LCD displays 01) (2) Not displayed (LCD displays 02) It is defaulted to be not displayed for export unit and be displayed for domestic unit.
  • Page 24 ROOFTOP PACKAGED 4.8.6 Selecting low-power consumption mode Under debugging state, press Mode button to adjust to “07” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections: (1) With low-power consumption mode (LCD displays 00) (2) Without low-power consumption mode (LCD displays 01) 4.8.7 Selecting door control function Under debugging state, press Mode button to adjust to “08”...
  • Page 25 ROOFTOP PACKAGED 4.8.10 Selecting compensation of temperature sensor at air return Under debugging state, press Mode button to adjust to “12” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 16 selections: (1) Compensate 0°...

  • Page 26: Installation Of Wired Controller

    ROOFTOP PACKAGED After finishing setting, press Swing/Enter button to save and exit setting. After entering this interface, the system will exit this menu if there is no operation on the button within 20s. Normal off state interface will be displayed and present setting will not be saved. 5 INSTALLATION OF WIRED CONTROLLER 5.1 Standard Accessories Table 2-5-1 Standard Accessories of Wired Controller...

  • Page 27: Installation Of Wired Controller

    ROOFTOP PACKAGED connecting wire, the shortest distance should be over 20cm, otherwise the communication cannot work normally; 3) If the unit is installed in the position where is likely to be impacted by electromagnetic interface, signal wire of wired controller should be made of STP (shielded twisted pair). (6) The wired controller should only be installed indoors, and its working temperature range is 0°...

  • Page 28: Removal Of Wired Controller

    ROOFTOP PACKAGED 5.4 Removal of Wired Controller Figure 2-5-3 Removal of wired controller 6 TROUBLESHOOTING 6.1 DISPLAY OF ERROR CODE Table 2-6-1 Error Code List 1 Error code Error Remarks Compressor high pressure protection Indoor anti-freeze protection Compressor low pressure protection, refrigerant lack protection and refrigerant colleting mode Compressor high discharge temperature protection Communication error...
  • Page 29 ROOFTOP PACKAGED Error code Error Remarks Zero passage protection AC current protection Drive current error Sensor connecting protection Temperature drift protection Bus low voltage protection Bus high voltage protection Charge loop error Input voltage abnormality Drive memory chip error pfc protection ODU jumper cap failure DRED1 mode DRED2 mode...
  • Page 30 ROOFTOP PACKAGED For example, E1 means high pressure protection during operation. Figure 2-6-1...

  • Page 31: Installation

    ROOFTOP PACKAGED INSTALLATION...

  • Page 32: Units Install

    ROOFTOP PACKAGED INSTALLATION 1 UNITS INSTALL 1.1 INSTALLATION POSITIONS To ensure the unit in proper function, selection of installation location must be in accordance with following principles. (1) Unit shall be installed so that the air discharged by outdoor fan will not return and that sufficient space for repair shall be provided around the unit.

  • Page 33: Lifting Method

    And the unit must be fixed on the pedestal with bolt. The location of pedestal must be able to support the weight of the unit. If not, the unit may be overturning, declining or falling off in an extreme circumstance (just like earthquake, typhoon). GRIT03A...
  • Page 34 ROOFTOP PACKAGED GRIT05A、GRIT05B GRIT10B GRIT15B...
  • Page 35 ROOFTOP PACKAGED GRIT20B NOTE: ① The diagram may be different from actual model. The diagram is for pedestal made of concrete. ② The high dimension of the pedestal must be enough to install drainpipe (Refer to DRAIN PIPING WORK) 1.2.4 DUCTWORK The design and installation of air ducts must be in conformity with the relevant local engineering criteria.

  • Page 36: Dimension

    ROOFTOP PACKAGED 1.3 DIMENSION 1.3.1 DIMENSION OF UNITS GRIT03A GRIT05A、GRIT05B GRIT10B...
  • Page 37 ROOFTOP PACKAGED GRIT15B GRIT20B Dimension (mm) GRIT03A 1450 1120 GRIT05A 1450 1120 GRIT05B 1450 1120 GRIT10B 1215 1450 1120 GRIT15B 1245 2260 1140 GRIT20B 1250 1880 2240 2021 1336 Note: Above diagrams may be different from actual mode.

  • Page 38: Installation Clearance Data

    ROOFTOP PACKAGED 1.3.2 INSTALLATION CLEARANCE DATA Note: Above diagrams may be different from actual mode. GRIT03A、GRIT05A、GRIT05B Installation Clearances DIMENSION (Minimum) inch 1100 1100 1100...
  • Page 39 ROOFTOP PACKAGED GRIT10B GRIT15B...

  • Page 40: Drain Piping Work

    ROOFTOP PACKAGED GRIT20B Note: Above diagrams may be different from actual mode. GRIT10B、GRIT15B、GRIT20B Installation Clearances DIMENSION (Minimum) inch 1000 1500 1100 1100 1100 2 DRAIN PIPING WORK 2.1 INSTALLATION PROCEDURE After the unit is installed, it is required to check the level of the whole unit. The unit must be placed horizontally to ensure the unit in proper function.

  • Page 41: Matters Of Attention

    Remark: P is the absolute pressure inside the unit. The unit of the pressure is Pa. After the electrical installation is completed, carry out the testing of the drainage system. Note: Above diagrams may be different from actual mode. Model Drain Connection Size(mm) GRIT03A GRIT05A GRIT05B GRIT10B GRIT15B...
  • Page 42 ROOFTOP PACKAGED (8) Do not change the internal line connections inside the air-conditioning unit. The manufacturer shall not be liable for any loss or abnormal operation arising from wrong line connections. (9) If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard.

  • Page 43: Electric Wiring Design

    ROOFTOP PACKAGED 3) Connect the power supply cable to the erminals and the grounding screw. 4) Use cable fastener to bundle and fix the cable. (2) Air-conditioning unit with 3-phase power supply 1) Remove the Electric Box Cover of the unit. 2) Pass the cable through rubber ring.

  • Page 44: Adjust The Tightness Of The Belt (Only Above 10 Ton)

    ROOFTOP PACKAGED GRIT05B,GRIT10B,GRIT15B,GRIT20B 4 Adjust the Tightness of the Belt (Only above 10 Ton) (1) The rotation of the fan is achieved by the transmission of the belt. The velocity and stability of the fan is associated with the tightness of the belt and the tightness should be adjusted after a period of time.
  • Page 45 ROOFTOP PACKAGED GRIT20B Diameter of the Diameter of The total Tension(N) Section area Deviation small the big length of the of the belt length(mm) Min. Max. wheel(mm) wheel(mm) belt(mm) 1482 1457 1482 1432 1457 1500 Note: Above diagrams may be different from actual model.

  • Page 46: Maintenance

    ROOFTOP PACKAGED MAINTENANCE...

  • Page 47: Malfunction Table

    ROOFTOP PACKAGED MAINTENANCE 1 MALFUNCTION TABLE 1.1 MAIN CONTROL MALFUNCTION Table 1 Fault Display on Wired Controller Origin of Error Malfunction malfunction Control description code name signal When unit detects the high pressure switch is cut off for 3s successively, high pressure protection will occur. All the loads (except the 4-way valve in heating mode) will be switched off.
  • Page 48 ROOFTOP PACKAGED Origin of Error Malfunction malfunction Control description code name signal If the indoor ambient temperature sensor is detected of open Malfunction of circuit or short circuit for 5s successively, indoor ambient Indoor indoor ambient temperature sensor malfunction will be reported. The unit can ambient temperature automatically resume operation after the malfunction disappears.

  • Page 49: Description Of Drive Malfunction

    ROOFTOP PACKAGED Origin of Error Malfunction malfunction Control description code name signal If the unit does not receive signal from condenser fan motor for 30s successively when the fan motor is operating, condenser fan Malfunction of motor malfunction will be reported. In this case, the unit can Condenser fan condenser fan automatically resume operation after stopping.
  • Page 50 ROOFTOP PACKAGED Malfunction Item Wired Controller Display Unit display of dual 8 numeral tube Condenser Fan AC current protection (input side) Condenser Fan IPM module protection Condenser Fan PFC abnormality Condenser Fan startup failure Condenser Fan Missing phase Condenser Fan Drive module resetting Condenser Fan current protection Condenser Fan power protection Condenser Fan Current sensor malfunction...

  • Page 51: Flow Chart Of Troubleshooting

    ROOFTOP PACKAGED 2 FLOW CHART OF TROUBLESHOOTING 2.1 TROUBLESHOOTING FLOW CHART OF MAIN CONTROL MALFUNCTION  E1 High Pressure Protection protection Reconnect wire according to the circuit diagram Check if the system high Check if the wiring Check if the high Replace the high pressure is of high pressure...
  • Page 52 ROOFTOP PACKAGED E3 protection Enter Charge debugging mode refrigerant through wired Check if the according to the controller and select system low requirement and without refrigerant pressure is lower then turn on the unit lacking protection; then than 0.05MPa to see if E3 turn on the unit to see protection still if E3 protection still...
  • Page 53 ROOFTOP PACKAGED  E4 Discharge Protection E4 protection Replace the discharge temperature sensor Check if the discharge Check if the temperature around discharge Replace the outdoor compressor discharge temperature sensor main control board temperature sensor is normal exceeds 115℃ Check if there is leakage in the system pipeline;...
  • Page 54 ROOFTOP PACKAGED  E6 Communication Malfunction Communication malfunction Check if the communication wire between indoor mainboard and Reconnect the outdoor mainboard or between indoor communication wire mainboard and wired controller is connected well Check if there is open circuit in the communication wire between indoor mainboard and Replace the outdoor mainboard or between...
  • Page 55 ROOFTOP PACKAGED  F0 Malfunction of Indoor Ambient Temperature Sensor Malfunction of indoor ambient temperature sensor Check if the indoor ambient temperature Correctly insert the sensor on mainboard is inserted temperature sensor on the needle on the needle stand stand correctly Disconnect Replace the the temperature sensor and...
  • Page 56 ROOFTOP PACKAGED  F2 Malfunction of Condenser Temperature Sensor Malfunction of condenser temperature sensor Check if the condenser Correctly insert the temperature sensor on temperature sensor mainboard is inserted on the on the needle stand needle stand correctly Disconnect Replace the the temperature sensor and temperature sensor measure if its resistance is...
  • Page 57 ROOFTOP PACKAGED  F4 Malfunction of Discharge Temperature Sensor Malfunction of discharge temperature sensor Check if the Correctly insert the discharge temperature sensor on temperature sensor mainboard is inserted on the on the needle stand needle stand correctly Disconnect Replace the the temperature sensor and temperature sensor measure if its resistance is...
  • Page 58 ROOFTOP PACKAGED  H6 Malfunction of Outdoor Fan Motor Malfunction of Outdoor Fan Motor Check if the Correctly connect the control wire of outdoor fan motor is control wire of fan motor connected on the outdoor on the mainboard mainboard correctly Replace the outdoor fan motor and then Operate the unit with...

  • Page 59: Troubleshooting Flow Chart Of Drive Malfunction

    ROOFTOP PACKAGED  E8 Malfunction of Indoor Fan Motor Malfunction of indoor fan motor Check if the Correctly connect the control wire of indoor fan motor is control wire of fan motor connected on the outdoor on the mainboard mainboard correctly Replace the indoor fan motor and then Operate the unit with...
  • Page 60 ROOFTOP PACKAGED  PH DC busbar over-voltage protection  PL DC busbar under-voltage protection PH or PL is displayed on the wired controller PH or PL is displayed in the mainboard 88 indicating lamp Is input voltage ranged from 185VAC to 264VAC? Replace the mainboard.Does...
  • Page 61 ROOFTOP PACKAGED  P5 Compressor current protection  H7 Compressor motor desynchronizing  H5 IPM protection  Ld Phase loss P5, H7, H5 or Ld is displayed on the wired controller P5, H7, H5 or Ld is displayed in the mainboard 88 indicating lamp adjust the Is the compressor...
  • Page 62 ROOFTOP PACKAGED  ee driving board chip error  H6 DC fan error H6 is displayed on the wired controller H6 is displayed in the mainboard 88 indicating lamp Is the motor phase sequence Adjust the motor right? phase sequence Tighten the fan Is the Fan wire terminal loose？...

  • Page 63: Wiring Diagram

    ROOFTOP PACKAGED 3 WIRING DIAGRAM The actual wiring should always refer to the wiring diagram of the unit. Model: GRIT03A Note: Above data is subject to change without notice.
  • Page 64 ROOFTOP PACKAGED Model: GRIT05A Note: Above data is subject to change without notice.
  • Page 65 ROOFTOP PACKAGED Model: GRIT05B Note: Above data is subject to change without notice.
  • Page 66 ROOFTOP PACKAGED Model: GRIT10B Note: Above data is subject to change without notice.
  • Page 67 ROOFTOP PACKAGED Model: GRIT15B Note: Above data is subject to change without notice.
  • Page 68 ROOFTOP PACKAGED Model: GRIT20B Note: Above data is subject to change without notice.

  • Page 69: Disassembly And Assembly Procedure Of Main Parts

    ROOFTOP PACKAGED 4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 4.1 Model: GRIT03A Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor.
  • Page 70 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction  Unscrew the nuts on compressor base with a wrench 5.
  • Page 71 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction 9. Re-install the Put the cover plate back and ...
  • Page 72 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction Unscrew the screw (indcated  by the arrow) fixing fan to take the fan out.
  • Page 73 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 7. Re-install the Put the cover plate back and ...
  • Page 74 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 3. Remove the  Unscrew the screws on fan sub-assembly (indicated by screws on fan...
  • Page 75 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 7. Install the fan  Install the fan volute. volute.
  • Page 76 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal. Step Illustration Handling Instruction connection lines of motor.  Unscrew the screws (indicated by the arrows),and then take down the electric 5.
  • Page 77 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal. Step Illustration Handling Instruction 9. Re-install the Put the side plate back and  tighten the screws. side plate.
  • Page 78 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction  Heat the connection pipes 4. Cut off the indicated by arrows with fired connection heater and then draw out...
  • Page 79 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction such as fan. 9. Re-install the Put the cover plate back and ...
  • Page 80 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Unscrew the screw (indcated by the arrow) fixing fan to take the fan out.
  • Page 81 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 7. Re-install the  Put the cover plate back and cover plate.
  • Page 82 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Unscrew holding bolt(indicated 3. Take down the by the arrow) of fan sub-assembly bracket with a...
  • Page 83 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 7. Fix the fan Then screw down the holding ...
  • Page 84 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal. Step Illustration Handling Instruction  Pull out power cord or disconnect the power cord after unscrewing the screws. Note: Earmark the colour of wire 2.
  • Page 85 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal. Step Illustration Handling Instruction 7. Re-install the  Put the electric box back and tighten the screws. electric box cover.
  • Page 86 ROOFTOP PACKAGED 4.3 Model: GRIT10B Model: GRIT10B Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction Connect vacuum recovery tank with nozzle for adding freon for 1.
  • Page 87 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction 4. Cut off the Heat the connection pipes connection indicated by arrows with fired between...
  • Page 88 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction cord. The line connection must accord to the schematic diagram. Note: The connection box of compressor must be re-covered to resisting water.
  • Page 89 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Unscrew the screws fixing 2. Take out the cover plate (indicated by cover plate.
  • Page 90 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Put the repaired or replaced motor onto brakcet as the direction during removing.
  • Page 91 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Unscrew the screws fixing cover plate .Lift the handles, 1.
  • Page 92 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Unscrew the holding screw of fan (indicated by the arrows) to loose connection between motor shaft and fan.
  • Page 93 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 7. Fix the fan Then screw down the holding ...
  • Page 94 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal. Step Illustration Handling Instruction Unscrew the screws fixing side  plate. Lift the handles, slightly 1.
  • Page 95 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal. Step Illustration Handling Instruction  Unscrew the screws (indicated by the arrows),and then take down the electric box. 5.
  • Page 96 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal. Step Illustration Handling Instruction  Re-connect power cord according to wiring diagram adhered on eletric box. After connection, arrange...
  • Page 97 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction Unscrew the screws fixing side  2. Take out the side plate (indicated by arrows) to take it plate.
  • Page 98 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction  Unscrew the nuts on compressor 6. Take down the base with a wrench and then remove compressor from the compressor from the base.
  • Page 99 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction  put the axial fan assy back with lifting 9.
  • Page 100 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Disconnect all connection lines between motor and elements in electric box.
  • Page 101 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 7. Re-install the cover  Put the cover plate back and tighten plate.
  • Page 102 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Unscrew the screws fixing air duct 3.
  • Page 103 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction Unscrew the screws fixing fan  7. Take out the fan. (indicated by arrows) to take it out.
  • Page 104 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction Unscrew position control bolts of  motors bracket (indicated by the 12.
  • Page 105 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 16. Re-install the Put the cover plate back and tighten ...
  • Page 106 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off bef ore removal. Step Illustration Handling Instruction  Unscrew the screws fixing 3. Take out cover (indicated by the the electric arrows).Then take out the box cover.
  • Page 107 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off bef ore removal. Step Illustration Handling Instruction  Re-connect power cord according to wiring diagram adhered on eletric box.
  • Page 108 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction Screws Screws Unscrew the screws fixing cover ...
  • Page 109 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction  Unscrew the nuts on compressor 6. Take down the base with a wrench and then remove compressor from the compressor from the base.
  • Page 110 ROOFTOP PACKAGED Disassembly and Assembly of Compressor Remark: Make sure there isn't any refrigerant in pipe system and the power supply is cut off before removal of the compressor. Step Illustration Handling Instruction  Reconnect the power cord into compressor according to the procedure of disconnecting power cord.
  • Page 111 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Unscrew the screws fixing cover 2. Take out the cover plate (indicated by arrows) to take it plate.
  • Page 112 ROOFTOP PACKAGED Disassembly and Assembly of Condenser Fan Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction  Re-install fan blade and screw down the holidng bolt indicated by the arrow with a wrench.
  • Page 113 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 2. Take out the side  Unscrew the screws fixing side plate plate.
  • Page 114 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction Anticlockwise screw the 2 bolts  indicated by arrows with inner hexagon wrench, and then clockwise screw down the other 6.
  • Page 115 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction Nuts Re-assemble repaired or replaced  motor. Installation direction is the 10.
  • Page 116 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction Unscrew position control bolts of  motors bracket (indicated by the 14.
  • Page 117 ROOFTOP PACKAGED Disassembly and Assembly of Supply Blower Motor Remark: Make sure that the unit is stopped running and power supply is cut off before removal of the motor. Step Illustration Handling Instruction 18. Re-install the Put the cover plate back and tighten ...
  • Page 118 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal . Step Illustration Handling Instruction 3. Take out  Unscrew the screws fixing cover the electric (indicated by the arrows).Then take box cover.
  • Page 119 ROOFTOP PACKAGED Disassembly and Assembly of Electric Box Remark: Make sure that the unit is stopped running and power supply is cut off before removal . Step Illustration Handling Instruction 8. Re-install  Put the side plate back and tighten the side plate.

  • Page 120: Exploded Views And Spare Part List

    ROOFTOP PACKAGED 5 EXPLODED VIEWS AND SPARE PART LIST Model: GRIT03A GK-H03NH3AS Name of Part Product Code EJ51000660 Part Code Quantity Main Board '300027060219 Main Board '30221000026 Radiator 430034000014 Main Board '300002060345 Main Board '30223000046 Radiator 49018000001 Terminal Board '42200000001501...
  • Page 121 ROOFTOP PACKAGED GRIT03A Name of Part Product Code EJ51000660 Part Code Quantity Terminal Board '42200000000701 Electric Box Assy '100002061827 Air Outlet Panel '012233060008P Filter Sub-Assy '11100100000602 Evaporator Assy '011001060257 Clapboard Sub-Assy '017021060114P Filter Sub-Assy 111001000086 Side Plate '017110060027P Side Plate...
  • Page 122 ROOFTOP PACKAGED Model: GRIT05A GRIT05A Name of Part Product Code EJ51000740 Part Code Quantity Radiator '430034000004 Main Board ‘300027060479 Power Switch '300012060010 Radiator '49018000001 Main Board ’30223000046 Main Board ‘300027060219 Filter Board '300020000003 Terminal Board '422000060003 Terminal Board '42200000000701 Electric Box Assy '100002063732 Electric Box Assy '100002061729...
  • Page 123 ROOFTOP PACKAGED GRIT05A Name of Part Product Code EJ51000740 Part Code Quantity Filter Sub-Assy '11100100000602 Evaporator Assy '011001060249 Clapboard Sub-Assy '017021060114P Side Plate '017110060027P Side Plate '017110060026P Handle '26235253 Rear Grill '016001060024 Filter Sub-Assy '111001000086 Water Tray Sub-Assy '017055060072P Choke Plug of Drain Pipe '76712455 Base Frame Assy '000043060068...
  • Page 124 ROOFTOP PACKAGED Model: GRIT05B GRIT05B Name of Part Product Code EJ51000650 Part Code Quantity Radiator '4901800000201 Main Board '300027060204 Reactor '43138000049 Rectifier '46010604 AC Contactor '44010265 Radiator '49018000001 Main Board '30223000046 Filter Board '30228000032 Terminal Board '42200006000303 Terminal Board '42200000000701 Main Board '300027060219 Main Board...
  • Page 125 ROOFTOP PACKAGED GRIT05B Name of Part Product Code EJ51000650 Part Code Quantity Side Plate '017110060027P Side Plate '017110060026P Handle '26235253 Clapboard Sub-Assy '017021060114P Water Tray Sub-Assy '017055060072P Base Plate Sub-Assy '017000060116P Gas-Liquid Separator 07423902 Compressor and Fittings 00209400005 Choke Plug of Drain Pipe 76712455 Rear Grill 1 '016001000005...
  • Page 126 ROOFTOP PACKAGED Model: GRIT10B GRIT10B Name of Part Product Code EJ51000710 Part Code Quantity Filter Sub-Assy '11100100000603 Handle '26235253 Side Plate '017110060045P Side Plate '017110060044P Rear Grill '016001060029 Air Outlet Panel Sub-Assy '017097060008P Choke Plug of Drain Pipe '76712455 Brushless DC Motor '150104060022 Blower(Left) '15704118...
  • Page 127 ROOFTOP PACKAGED GRIT10B Name of Part Product Code EJ51000710 Part Code Quantity Clapboard Sub-Assy '017021060182P Nozzle for Adding Freon '06130002 Compressor and Fittings '009001060108 Gas-Liquid Separator '07424188 Base Frame Assy '000043060104 Pressure Switch '4602001531 4-Way Valve '43000339 Condenser Assy '011002060387 Electronic Expansion Valve '43044100190 Pressure Protect Switch...
  • Page 128 ROOFTOP PACKAGED Model: GRIT15B GRIT15B Name of Part Product Code EJ51000700 Part Code Quantity Coping '012049060036P Rear Grill 1 '016001000006 Diversion Circle '012193000001P Axial Flow Fan '10434100007 Fan Motor '150101000054 Air Scroll '012277060013P Blower '15018317 Evaporator Assy '011001060425 Filter Sub-Assy '111001060058 Evaporator Assy '011001060426...
  • Page 129 ROOFTOP PACKAGED GRIT15B Name of Part Product Code EJ51000700 Part Code Quantity Terminal Board '42011103 Terminal Board '42200000000701 Phase Reverse Protector '32214101 Terminal Board '42018000558 AC Contactor '44010226 Side Plate '017110060050P Filter Board '30228000032 Chassis Sub-Assy '017000060196P Chassis Sub-Assy '017000060197P Water Tray Sub-Assy '017055060170P Electric Expand Valve Fitting...
  • Page 130 ROOFTOP PACKAGED Model: GRIT20B GRIT20B Name of Part Product Code EJ51000720 Part Code Quantity Rear Grill 1 '016001000006 Diversion Circle '012193000001P Top Cover '012148060067P Top Cover '012148060066P Air Outlet Panel '012233060016P Blower '15018319 Filter Sub-Assy '111001060061 Evaporator Assy '011001060442 Fan Motor '150101060016 Electric Box Assy '100002063333...
  • Page 131 ROOFTOP PACKAGED GRIT20B Name of Part Product Code EJ51000720 Part Code Quantity Radiator '4901800008001 Main Board '300027060235 Terminal Board '42018000558 Terminal Board '42200000000701 Terminal Board '42200000001601 Terminal Board '42200006000303 Anti-phase Protector '46020066 Terminal Board '42011103 Main Board '300027060219 Side Plate '017110060058P Side Plate '017110060059P...
  • Page 132 JF00303727...

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