Related Manuals for Gree GMV-N12U/C-T(U)
Summary of Contents for Gree GMV-N12U/C-T(U)
- Page 1 Owner's Manual Original Instructions Commercial Air Conditioners AHU-KIT Models： GMV-N12U/C-T(U) GMV-N24U/C-T(U) GMV-N48U/C-T(U) GMV-N96U/C-T(U) GMV-N192U/C-T(U)
- Page 2 Preface For correct installation and operation, please read all instructions carefully. Before reading the instructions, please be aware of the following items: This is the safety alert symbol. It is used to alert you to potential personal injury hazards. DANGER Obey all safety messages that follow this symbol to avoid possible injury or death.
- Page 3 Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: Damage the product due to improper use or misuse of the product; (2) Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer;...
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Page 4: Table Of Contents
Contents 1 Safety Precautions ..................... 1 2 Product Introduction ....................2 2.1 Names of Key Components ................... 2 2.2 Overall System Connection Diagram ..............2 2.3 Standard Fittings ....................3 2.4 Specifications ......................4 2.5 Recommended Selection of Air Handling Unit ............6 3 Preparations for Installation .................. -
Page 5: Safety Precautions
(28) If anything abnormal happens (such as burning smell), please power off the unit and cut off the main power supply, and then immediately contact Gree appointed service center .If abnormality keeps going, the unit might be damaged and lead to electric shock or fire. -
Page 6: Product Introduction
AHU-KIT 2 Product Introduction 2.1 Names of Key Components Fig.2.1 2.2 Overall System Connection Diagram When one AHU-KIT is connected to one AHU, the connection diagram is as follows: Fig.2.2.1... -
Page 7: Standard Fittings
AHU-KIT When several AHU-KITs are in parallel connection with one AHU, the connection diagram is as follows: Fig.2.2.2 2.3 Standard Fittings Please use the supplied standard fittings listed below as instructed. Name Appearance Quantity Magnetic ring 1or2 Swell screw Self-tapping screw Bundle Operating Instruction Manual Wired controller... -
Page 8: Specifications
AHU-KIT Name Appearance Quantity Fastener Reducer pipe （Only for 24, 96,192 type） 2.4 Specifications GMV-N48U/C-T(U) Model GMV-N12U/C-T(U) GMV-N24U/C-T(U) Capacity Cooling 14.1 Defaulted capacity Cooling kBtu/h 12.0 24.0 48.0 of ex-factory Heating 15.8 Heating kBtu/h 13.5 27.0 54.0 Capacity Cooling 10.6 14.1 17.6 Adjustable... - Page 9 AHU-KIT Model GMV-N96U/C-T(U) GMV-N192U/C-T(U) 203×326×85 246×500×120 EXV box inch 8×12-7/8×3-3/8 9-5/8×19-5/8×4-3/4 Outline dimension (W×D×H) 334×284×111 334×284×111 Control inch 13-1/8×11-1/8×4-3/8 13-1/8×11-1/8×4-3/8 10.5 13.0 Net weight GMV-N48U/C-T(U) GMV-N96U/C-T(U) GMV-N192U/C-T(U) Model(Combined) +GMV-N192U/C-T(U) +GMV-N192U/C-T(U) +GMV-N192U/C-T(U) Capacity 48+288 96+288 192+288 288+288 Cooling 98.5 112.5 140.7 168.8 Cooling kBtu/h...
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Page 10: Recommended Selection Of Air Handling Unit
AHU-KIT 2.5 Recommended Selection of Air Handling Unit Select the air handling unit according to the technical data and limitations mentioned in the following table. Lifetime of the unit, operation range or operation reliability may be influenced if you neglect these limitations. Allowed Heat Exchanger Capacity(kBtu/h) Capacity Model(Combined) - Page 11 AHU-KIT indoor unit. The connection is limited by the outdoor unit. There are three kinds of connection method: (1) Connection method 1: one-to-one The AHU-KIT as below can adopt one-to-one connection method with VRF outdoor unit. Total capacity of AHU-KIT should be 50%~110% of that of outdoor unit. Model(Combined) Capacity in application (kBtu/h) GMV-N24U/C-T(U)
- Page 12 AHU-KIT NOTICE 9~144 kBtu/h units can be connected to the same system; 72~288 kBtu/h units can be connected to the same system. (3) Connection method 3: one-to-more (mixed connection) The AHU-KIT as below can adopt one-to-more connection method with general VRF indoor unit.
- Page 13 AHU-KIT Fig.2.5.2 AHU-KIT one-to-one (combination outdoor unit) connection diagram Fig.2.5.3 AHU-KIT one-to-more connection diagram...
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Page 14: Preparations For Installation
AHU-KIT Fig.2.5.4 AHU-KIT one-to-more (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 is mm(inch). (1) This equipment is designed for R410A system, and the designed working pressure is 4.3MPa or 43bar. -
Page 15: Location For Installation
AHU-KIT (5) Never use this appliance in a place with inflammable and explosive gas. (6) For the following items, take special care during construction and check after installation is finished: Tick √ when checked □ Are the temperature sensors fixed firmly? Temperature sensor may come loose. -
Page 16: Requirements For Communication Wire
AHU-KIT NOTICE Do not install or operate the unit 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 areas of hot spring. d) In vehicles or vessels. - Page 17 AHU-KIT Fig.3.3.1 one wired controller to one AHU-KIT Fig.3.3.2 one wired controller to several AHU-KITs 3.3.2 Select Communication wire for AHU-KIT and Outdoor Unit Fig.3.3.3 Total Length L of Communication Cable between Wire type Wire size Remarks Indoor Unit and Indoor (Outdoor) Unit 1.
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Page 18: Wiring Requirements
AHU-KIT 3.4 Wiring Requirements Power Cord Size and Air Switch Capacity: Fuse Minimum Circuit Maximum Overcurrent Model Power Supply Capacity(A) Capacity(A) Protection(A) GMV-N12U/C-T(U) GMV-N24U/C-T(U) GMV-N48U/C-T(U) 208/230V ~60Hz GMV-N96U/C-T(U) GMV-N192U/C-T(U) NOTICE Use copper wire only as unit’s power cord. Operating temperature should be within its rated value. ①... - Page 19 AHU-KIT 3.5.2 Piping Design When one AHU-KIT is connected to one AHU, the piping diagram is as follows: Fig.3.5.1 One AHU-KIT to one AHU When several AHU-KITs are connected to one AHU, the piping diagram is as follows: Fig.3.5.2 Several AHU-KITs to one AHU 3.5.2.1 Selection of Branch Pipe (1) Branch pipes (a, b) between outdoor units shall be selected according to the total capacity of outdoor unit ,as follows:...
- Page 20 AHU-KIT Selection of branch pipe between Total rated capacity of downstream Model indoor units IDUs C(kBtu/h) C<68 FQ01A/A 68≤C≤102 FQ01B/A Y-type Manifold 102<C≤239 FQ02/A 239<C≤461 FQ03/A 461<C FQ04/A C≤136 FQ14/H1 T- type Manifold C≤232 FQ18/H1 232<C FQ18/H2 (3) When several AHU-KITs are connected to one AHU, branch pipe (e) shall be selected according to the following table: Model(Combined) Branch pipe...
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Page 21: Capacity Setting
AHU-KIT Rated capacity (kBtu/h) Gas pipe mm(inch) Liquid pipe mm(inch) 168<Q≤216 Φ28.6(1-1/8) Φ15.9(5/8) 216<Q≤240 Φ34.9(1-3/8) Φ15.9(5/8) 240<Q≤312 Φ34.9(1-3/8) Φ19.05(3/4) 312<Q≤336 Φ34.9(1-3/8) Φ19.05(3/4) 336<Q≤576 Φ41.3(1-5/8) Φ19.05(3/4) NOTICE ① As the capacity of AHU-KIT is adjustable, please select piping according to actual capacity in the project. -
Page 22: Installation Instructions
AHU-KIT Please ensure dialing the code switch properly in place instead of middle position. Setting the switch to "ON" stands for "0", otherwise stands for "1". (NOTICE: The black part is the deflector rod.) The figure shows that the addresses of "1,2,3,4,5"... - Page 23 AHU-KIT (2) Size of EXV box for GMV-N12U/C-T(U): Unit: mm(inch) Fig.4.1.2 (3) Size of EXV box for GMV-N24U/C-T(U)、GMV-N48U/C-T(U)、GMV-N96U/C-T(U): Unit: mm(inch) Fig.4.1.3...
- Page 24 AHU-KIT (4) Size of EXV box for GMV-N192U/C-T(U): Unit: mm(inch) Fig.4.1.4 (5) Maintenance space of control space: Unit: mm(inch) Fig.4.1.5...
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Page 25: Exv Installation
AHU-KIT (6) Maintenance space of EXV box: Unit: mm(inch) Fig.4.1.6 4.2 EXV Installation 4.2.1 Mechanical Installation (1) Remove the EXV box cover by unscrewing screws. (2) Drill 4 holes on correct position (measurements as indicated in figure below) and fix the valve kit box securely with 4 screws through the provided holes φ12mm(1/2 inch). - Page 26 AHU-KIT 4.2.2 Brazing Work (1) Prepare the inlet/outlet field piping just in front of the connection (do not braze yet). Unit: mm(inch) Fig.4.2.1 A: Inlet coming from the outdoor unit B: Outlet to air handling unit C: Wire clamp (2) Remove the wire clamp (C) by unscrewing 6×M4.2. (3) Braze the field piping.
- Page 27 AHU-KIT NOTICE 1) Refrigerant piping 2) Part to be brazed 3) Taping 4) Hands valve 5) Pressure-reducing valve 6) Nitrogen For details, see manual of the outdoor unit. (3) Make sure to cool the filters and valve body with a wet cloth and make sure the body temperature does not exceed 120°C(248°F) during brazing.
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Page 28: Installation Of The Exv Cable
AHU-KIT 4.2.3.2 Installation requirements (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 located in the control box in order to prevent the rainch. - Page 29 AHU-KIT follows: Fig.4.4.2 NOTICE A: When the air handling unit is installed at the top of the EXV box, vertical distance between the bottom of the air handling unit to the EXV box is no more than 2m(78-3/4 inch); 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 more than 2m(78-3/4 inch).
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Page 30: Installation Of The Control Box
AHU-KIT 4.5 Installation of the Control Box Fig.4.5.1 (1) Fix the control box with its hanger brackets to the mounting surface. (2) Open the lid of the control box. (3) For electrical wiring: refer to the following contents. (4) Install the screw nuts. (5) Close the unnecessary openings. - Page 31 AHU-KIT Fig.4.5.2 Precautions: ① Temperature sensor cable and remote controller wire should be kept away from power cable in a distance of at least 50mm(2 inch). Violating this rule may generate electric noise and lead to malfunctions. ② Use wires as specified and connect them tightly with wiring terminals. Keep the wires in order and do not obstruct other devices.
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Page 32: Installation Of The Temperature Sensors
AHU-KIT ......Protective earth (screw) 2........High gear of fan 3........Middle gear of fan 4........Low gear of fan D1/D2......Communication wires H1/H2......Wired controller NOTICE ① The 2, 3, 4 of fan gear lines are shorted by the factory default. ② Neutral line of fan connects to the N(1). ③... - Page 33 AHU-KIT Fig.4.6.1 ① Inlet pipe temperature sensor (Liquid Temperature sensor) ② Outlet pipe temperature sensor (gas Temperature sensor) Installation of the temperature sensor cable： (1) The length of temperature sensor wire is 10m(393-3/4 inch). (2) Put the temperature sensor cable in an individual protective tube. (3) Apply stress release in the temperature sensor wire to prevent the temperature sensor wire from getting loose due to stress.
- Page 34 AHU-KIT NOTICE ② Keep the temperature sensor and air handling unit in good contact. Put the top of the temperature sensor on the air handling unit, because the top of temperature sensor is the most sensitive part. Please fixing the temperature sensor on the horizontal plane of copper tube (within ±30°), and make them close together. ③...
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Page 35: Installation Of Wired Controller
AHU-KIT 4.6.2 Air Temperature Sensor The air temperature sensor can be installed in the space which needs temperature control, or the inlet scoop of air handling unit. NOTICE ① For connection to outdoor unit and to AHU-KIT unit: Pull the wires inside through the screw nut and close the nut firmly in order to ensure a good pull relieve and water protection. -
Page 36: Wire Connection
AHU-KIT 5 Wire Connection NOTICE ① Units must be earthed securely, or it may cause electric shock. ② Please carefully read the wiring diagram before carry out the wiring work, incorrect wiring could cause malfunction or even damage the unit. ③... -
Page 37: Power Cord Connection
AHU-KIT Unit: mm(inch) Fig.5.1.1 Fig.5.1.2 5.2 Power Cord Connection NOTICE Each indoor unit must be installed with an independent circuit breaker for short-circuit protection and overload protection. 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 normally. -
Page 38: Connection Of Communication Wire Between Indoor Unit And Outdoor Unit (Or Indoor Unit)
AHU-KIT Fig.5.2.2 (1) Detach the electric box lid. (2) Let the power cord pass through the wiring through-holes. (3) Connect the power cord to terminal “L1, L2, ”. (4) Fix the power cord with wiring clamp. 5.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or Indoor Unit) (1) Detach the control box lid. -
Page 39: Connect Communication Wire Of Wired Controller
AHU-KIT Fig.5.3.2 5.4 Connect Communication Wire of Wired Controller (1) Open electric box cover of indoor unit. (2) Let the communication wire go through the rubber ring. (3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board. (4) Fix the communication wire with wire clip on the electric box. - Page 40 AHU-KIT (4) One wired controller can control 16 indoor units in maximum at the same time (as shown in Fig.5.5). NOTICE The type of indoor units must be the same if they are controlled by the same wired controller. ① When the indoor unit is controlled by two wired controllers, the addresses of the two wired controllers should ②...
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Page 41: Function Setting
AHU-KIT 6 Function Setting 6.1 Statement on Linkage Function Setting When several AHU-KITs are in parallel connection with one AHU, you must activate linkage function after installation for normal operation. Setting way is as below: Step 1: Set group control IDU quantity After making sure all AHU-KITs are energized, set AHU-KIT quantity through wired controller P14, detailed operation is as follows: Under on or off status, press “Function”... - Page 42 AHU-KIT displays “P00”. Press “▲” and “▼”buttons can switch to the second level parameter code. After entering into P60 engineering debugging interface, the top right corner of interface will display “00”, which indicates it will control according to normal indoor unit. Short press “Mode” button and then press “▲”...
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Page 43: Selection Of Controller
6.3 Selection of Controller 6.3.1 Introduction to Functions AHU-KIT adapter can be controlled via Gree wired controller, and can also be controlled via the third party controller by adjusting dial code, which can realize ON/OFF control, mode setting, temperature adjustment, feedback of unit operating status, etc. - Page 44 ④ Even though the third party controller is selected, engineering setting of AHU-KIT adapter still needs to be set by Gree wired controller, such as “linkage function”, “fresh air function”, etc.; ⑤ When several sets of AHU-KIT adapter are simultaneously used, and one controller needs to control several sets of unit and the controller is the third party controller, the first bit of S2 dial code of adaptor for the third party’s controller is adjusted as “1”, and the first bit of S2...
- Page 45 AHU-KIT 2) Signal from AHU-KIT adapter to the third party controller Type of Wiring Wiring Function Description of signal interface board number When it is connected, it means the AHU-KIT is on; when it is Operating disconnected, it means the AHU-KIT is off. (The input status of 2、3 contact...
- Page 46 AHU-KIT Direct ratio between input Inverse ratio between input voltage and set temperature voltage and set temperature Fig.6.3.3 2) Definition of input voltage signal When the second bit of “S2” dial code is dialed to “0”, that is, the input voltage and set temperature is direct ratio, then the relation between input voltage and set temperature is as below: Analog quantity input DC 0~10V...
- Page 47 AHU-KIT Analog quantity input DC 0~10V Set temperature (°C) Set temperature (°C) Voltage range (V) Standard value (V) Cooling Heating Minimum value Maximum value 3.35≤ ≤3.65 lowest lowest 3.85≤ ≤4.15 lowest lowest 4.35≤ ≤4.65 lowest lowest 4.85≤ ≤5.15 lowest lowest 5.35≤...
- Page 48 AHU-KIT Fig.6.3.4 When several sets of AHU adapters connect in parallel and connect to one set of air conditioner, the diagram is shown as below: Fig.6.3.5 NOTICE ① Length of connection wire between the third party controller to AHU-KIT adapter should not be over 15m(590-1/2 inch).
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Page 49: Operation And Maintenance
Gree wired controller. ③ When AHU-KIT adapter adopts the third party controller, AHU-KIT adapter needs to connect to Gree wired controller while setting the master IDU. The methods for setting the master IDU through the wired controller are as follows: Step 1: Set an IDU to power-off status. -
Page 50: Routine Maintenance
AHU-KIT 7.3 Routine Maintenance NOTICE ① Only a qualified service person is allowed to perform maintenance. ② Before obtaining access to terminal devices, all power supply circuits must be interrupted. ③ Water or detergent may deteriorate the insulation of electronic components and result in burn-out of these components. -
Page 51: Table Of Error Codes For Indoor Unit
AHU-KIT 8 Table of Error Codes for Indoor Unit Error Code Content Error Code Content Error Code Content Indoor Units Incompatibility Indoor Unit Error Jumper Cap Error Error Indoor Unit Network Indoor Fan Protection Low Air Quality Warning Address Error ODU-IDU Incompatibility Wired Controller PCB E-heater Protection... -
Page 52: Troubleshooting
AHU-KIT 9 Troubleshooting If your air conditioner is not working well, please check the following table first before asking for service: Phenomenon Troubleshooting ① No power supply. ② Circuit breaker is tripped because of current leakage. The unit can’t start. ③...