Gree GMV-N12U/A-T(U) Page 24 Owner'S Manual Download | Manualshive

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AHU-KIT

21

Fig.4.1.2

(3) Size of EXV box for GMV-N192U/A-T(U) (Unit: mm(in.)):

Fig.4.1.3

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Summary of Contents for GMV-N12U/A-T(U)

Page 1: ...Owner s Manual Original Instructions Commercial Air Conditioners AHU KIT Models GMV N12U A T U GMV N24U A T U GMV N48U A T U GMV N96U A T U GMV N192U A T U...

Page 2: ...ld well keep this manual 6 If this unit fails to operate normally please contact our service center as soon as possible and provide the following information 1 Content on the nameplate model number co...

Page 3: ...allation of the EXV Cable 25 4 4 Piping Installation 25 4 5 Installation of the Control Box 27 4 6 Installation of the Temperature sensors 29 4 7 Installation of Wired Controller 32 5 Wire Connection...

Page 4: ...the compressor 12 Do not allow children operate this unit 13 Do not operate this unit with wet hands 14 Turn off the unit or cut off the power supply before cleaning the unit otherwise electric shock...

Page 5: ...nit appearance Only use soft cloth with a little neutral detergent to clean the outer casing of unit 27 If anything abnormal happens such as burning smell please power off the unit and cut off the mai...

Page 6: ...Product Introduction 2 1 Names of Key Components Fig 2 1 No Name Control Box EXV Box 2 2 Overall System Connection Diagram When one AHU KIT is connected to one AHU the connection diagram is as follow...

Page 7: ...AHU KIT 4 When several AHU KITs n 2 are in parallel connection with one AHU the connection diagram is as follows Fig 2 2 2...

Page 8: ...92 type 2 2 4 Specifications Model GMV N12U A T U GMV N24U A T U GMV N48U A T U Defaulted capacity of ex factory Capacity 12 24 48 Cooling kW 3 52 7 03 14 07 Cooling kBtu h 12 0 24 0 48 0 Heating kW 3...

Page 9: ...x factory Capacity 96 192 Cooling kW 28 14 56 27 Cooling kBtu h 96 0 192 Heating kW 31 65 63 31 Heating kBtu h 108 0 216 Adjustable capacity Capacity 72 96 120 144 168 192 288 Cooling kW 21 10 28 14 3...

Page 10: ...ve box mm 203 326 85 246 500 120 in 8 12 7 8 3 3 8 9 5 8 19 5 8 4 3 4 Control box mm 334 284 111 2 in 13 1 8 11 1 8 4 3 8 2 Net weight kg 9 5 13 lbs 21 28 NOTICE The specifications of the unit is subj...

Page 11: ...336 22 54 26 29 288 336 324 378 7450 10435 a The capacity is obtained at these test conditions superheat SH 5 41 and supercool SC 3 37 4 Cooling Saturated evaporating temperature 6 42 8 air return tem...

Page 12: ...F outdoor unit Total capacity of AHU KIT should be 50 110 of that of outdoor unit Model Capacity in application kBtu h Capacity DIP GMV N12U A T U 9 28 12 36 GMV N24U A T U 15 45 18 56 24 71 GMV N48U...

Page 13: ...18 56 24 71 GMV N48U A T U 30 90 36 112 48 140 GMV N96U A T U 72 224 96 280 NOTICE When connecting AHU KIT with general VRF indoor unit capacity requirement shall be followed strictly Otherwise it ma...

Page 14: ...ore hybrid connection connection diagram 3 Preparations for Installation 3 1 Before Installation NOTICE Product graphics are only for reference Please refer to actual products Unspecified measure unit...

Page 15: ...are during construction and check after installation is finished Tick when checked Are the temperature sensors fixed firmly Temperature sensor may come loose Is the capacity code set correctly System...

Page 16: ...it in rooms mentioned below a Where mineral oil like cutting oil is present b Where the air contains high levels of salt such as air near the ocean c Where sulphurous gas is present such as that in ar...

Page 17: ...r 3 If unit is installed in places with intense magnetic field or strong interference it is necessary to use shielded wire Connection between AHU KIT and wired controller is shown as follows 1 When on...

Page 18: ...otal communication cable length can reach 1500m 4920 ft 2 The cord shall be Circular cord the cores shall be twisted together 3 If unit is installed in places with intense magnetic field or strong int...

Page 19: ...t The minimum distance between each stage of cut off device should be 3 mm 1 8 in The same for both indoor unit and outdoor unit 3 5 Piping Requirements 3 5 1 Selection of Piping Requirements 1 Ensure...

Page 20: ...h pipe c d between indoor units shall be selected according to the total capacity of downstream IDUs as follows Selection of branch pipe between indoor units Total rated capacity of downstream IDUs C...

Page 21: ...ated capacity of IDU 5 Piping I1 I2 J H between branch pipe and AHU KIT shall be selected according to the capacity of AHU KIT Relationship between capacity and piping dimension is as below NOTICE As...

Page 22: ...ialing capacity code of mainboard shown as S1 Capacity code setting is shown as follows S1 Capacity kBtu h 1 2 3 4 5 0 1 0 0 0 9 0 0 1 0 0 12 0 1 1 0 0 15 0 0 0 1 0 18 0 1 0 1 0 24 0 0 1 1 0 30 0 1 1...

Page 23: ...prevented from getting mixed into the system 4 Installation Instructions 4 1 Unit Dimensions and Maintenance Space 1 Size of control box for GMV N12U A T U GMV N24U A T U GMV N48U A T U GMV N96U A T U...

Page 24: ...AHU KIT 21 Fig 4 1 2 3 Size of EXV box for GMV N192U A T U Unit mm in Fig 4 1 3...

Page 25: ...AHU KIT 22 Maintenance space of control space Unit mm in Fig 4 1 4 Maintenance space of EXV box Unit mm in Fig 4 1 5...

Page 26: ...the provided holes 12mm 1 2 in Make sure that the EXV box is installed upwards Make sure there is enough free space in front and in the side of the box for future maintenance 4 2 2 Brazing Work 1 Prep...

Page 27: ...otected from direct brazing flames during brazing 5 The EXV box is required to be installed in a vertical direction within the range of 90 15 not allowed for horizontal work Welding the connection tub...

Page 28: ...s 1 Ensure that the cable in the control box is in a relaxed state and both the joint of terminal and the fixed place of magnetic ring are all not under a stress 2 Ensure that the cable sheath port is...

Page 29: ...of the air handling unit to the EXV box is no more than 2 m if the air handling unit is installed under the EXV box vertical distance between the bottom of the air handling unit to the EXV box is no m...

Page 30: ...ts 4 Install the screw nuts 5 Close the unnecessary openings 6 Close the lid securely after installation to ensure that the control box is watertight 4 5 1 Wire connection Inside the Control Box 4 5 1...

Page 31: ...als Keep the wires in order and do not obstruct other devices Insecure connection may result in overheating or even cause electric shock or fire hazard Wiring connection Fig 4 5 3 Connecting cables ac...

Page 32: ...rmation cable to either AHU KIT Put through the wires to the coil tighten the coil while maintaining loose condition of wires to ensure it is not closely tied up and is waterproof When power supply is...

Page 33: ...ress Stress or looseness of temperature sensor wire will lead to poor contact and inaccuracy of temperature measuring Fixation of the temperature sensor Put the temperature sensor wire slightly down t...

Page 34: ...sensor with rubber belt to prevent looseness of temperature sensor Use two wire ties to bind the temperature sensor securely Wrap the temperature sensor with insulating trip 4 6 2 Air Temperature sens...

Page 35: ...kage AHU KIT inlet pipes and outlet pipes temperature sensor must be installed at the position of corresponding pipeline of air handling unit Install the ambient temperature sensor at the same positio...

Page 36: ...uring wire connection please pay attention that the metal shield layer of the twin twisted wire must be grounded outer case in order to prevent the unit from electromagnetic interference The communica...

Page 37: ...rotection In general this circuit breaker is under close status During operation process all indoor units and outdoor units in one system must be energized Otherwise the system can t operation normall...

Page 38: ...d with wiring clamp 5 3 Connection of Communication Wire between Indoor Unit and Outdoor Unit or Indoor Unit Detach the control box lid 1 Let the Communication cable pass through the wiring through ho...

Page 39: ...iring instructions of remote receiving light board and wired controller Fig 5 4 shows the installation of wired controller Fig 5 4 5 5 Illuminate for Connection of Wired Controller and Indoor Units AH...

Page 40: ...ntroller 2 When the indoor unit is controlled by two wired controllers the addresses of the two wired controllers should be different through address setting Address 1 is for main controller Address 2...

Page 41: ...ch means the number of AHU KIT under the control of wired controller is 1 short press Mode and revise actual controlled AHU KIT quantity through pressing and button If two AHU KITs are in parallel con...

Page 42: ...ng unit is ON 7 3 Routine Maintenance Only a qualified service person is allowed to perform maintenance Before obtaining access to terminal devices all power supply circuits must be interrupted Water...

Page 43: ...or Units Setting Error d8 Water Temperature Sensor Error L1 Error From External Feedback LA Indoor Units Incompatibility Error d9 Jumper Cap Error L2 E heater Protection LH Low Air Quality Warning dA...

Page 44: ...or people in the room Doors or windows are open Obstacle at the air intake and outlet of the unit Setting temperature is too high or refrigerant is insufficient e g refrigerant leakage Poor performanc...

Page 45: ......

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