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Asami AMV5-O785 Owner's Manual

Commercial air conditioners gmv dc inverter vrf
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Owner's Manual
Original Instructions
Commercial Air Conditioners
GMV DC Inverter VRF
Models:
AMV5-O785
AMV5-O900

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Summary of Contents for Asami AMV5-O785

  • Page 1 Owner's Manual Original Instructions Commercial Air Conditioners GMV DC Inverter VRF Models: AMV5-O785 AMV5-O900...
  • Page 3 We have the right to make necessary revision to the product from time to time due to the reason of sales or production, and reserve the right to revise the contents without further notice. (7) The final right to interpret for this instruction manual belongs to ASAMI.
  • Page 5 Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: (1) 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;...

  • Page 6: Table Of Contents

    Contents 1 Safety Notices (Please be sure to abide) ............1 2 Product Introduction ..................4 2.1 Names of Main Parts ....................4 2.2 Combinations of Indoor and Outdoor Units ..............4 2.3 The Range of Production Working Temperature ............5 3 Preparation before Installation .................

  • Page 7: Safety Notices (Please Be Sure To Abide)

    GMV DC Inverter VRF 1 Safety Notices (Please be sure to abide) Warning: If not abide strictly, it may cause severe damage to the unit or the people. Note: If not abide strictly, it may cause slight or medium damage to the unit or the people.
  • Page 8 GMV DC Inverter VRF Never fail to comply with the nitrigen charge Never short-circiut or cancel requirements.Charge the pressure switch to nitrogen when welding prevent unit damage. pipes. Please firstly connect the Before using the unit, please wired controller before check if the piping and wiring energization, otherwise are correct to avoid water...
  • Page 9 ASAMI will not assume responsibility of personal injury or equipment damage caused by improper installation and commission, unnecessary service and incapable of following the rules and instructions listed in this manual.

  • Page 10: Product Introduction

    GMV DC Inverter VRF 2 Product Introduction ASAMI Multi VRF System adopts inverter compressor technology. According to change the displacement of compressor, stepless capacity regulation within range of 10%-100% can be realized. Various product lineup is provided with capacity range from 78.5kW to 90kW, which can be widely used in working area and especially applicable to the place with variable load change.

  • Page 11: The Range Of Production Working Temperature

    GMV DC Inverter VRF (2) The total capacity of indoor units should be within 50%~135% of that of outdoor units. Fig.2 (3) Fig.2 is the combination view of the ODU of Modular DC Inverter Multi VRF System and the IDU of Multi VRF System. IDU can be cassette type, one-way cassette type, wall-mounted type, duct type, etc.

  • Page 12: Preparation Before Installation

    GMV DC Inverter VRF 3 Preparation before Installation Note: The picture is only used for reference and the actual product prevails. Unit: mm. 3.1 Standard Parts Please use the following standard parts supplied by ASAMI. Parts for Outdoor Unit Number Name...
  • Page 13 GMV DC Inverter VRF 3.2.1 When the outdoor unit is totally surrounded by walls, please refer to following figures for space dimension. 3.2.1.1 Space dimension for single outdoor unit unit:mm Fig. 3...
  • Page 14 GMV DC Inverter VRF 3.2.1.2 Space dimension for two outdoor units unit:mm Fig. 4...
  • Page 15 GMV DC Inverter VRF 3.2.1.3 Space dimension for three outdoor units unit:mm Fig.5 3.2.1.4 Space dimension for four outdoor units unit:mm Fig.6...
  • Page 16 GMV DC Inverter VRF 3.2.2 Space dimension for outdoor unit top When there is wall (or similar obstruction) above the unit, keep the distance between the unit top and the wall at least 3000mm or above. When the unit is located in a totally open space with no obstructions in four directions, keep the distance between the unit top and wall at least 1500mm or above (See Fig.7).
  • Page 17 GMV DC Inverter VRF 3.2.3 Space dimension for multiple unit For keeping good ventilation, make sure there is no obstructions above the unit. When the unit is located at a half-open space (front and left/right side is open), install the unit as per the same or opposite direction.
  • Page 18 GMV DC Inverter VRF 3.2.4 Take seasonal wind into consideration when installing the outdoor unit (1) Anti-monsoon installation requirements for unit not connecting exhaust duct: Fig.11 (2) Anti-monsoon installation requirements for unit connecting exhaust duct: Fig.12...

  • Page 19: Piping Work Requirements

    GMV DC Inverter VRF 3.2.5 Take snow into consideration when installing the outdoor unit Fig.13 3.3 Piping Work Requirements There should be no fall among outdoor modules. Refer to the table below for piping work requirements. R410A Refrigerant System Outer Diameter (mm) Wall Thickness (mm) Type Φ6.35...

  • Page 20: Physical Dimension Of The Outdoor Unit And Mounting Hole

    D. If a u-steel foundation is adopted, the structure must be designed with sufficient rigidity and strength. Fig. 14 4.2 Physical Dimension of the Outdoor Unit and Mounting Hole Outline and Physical Dimention of AMV5-O785 and AMV5-O900 unit. Unti:mm Fig.15...

  • Page 21: Connection Pipe

    GMV DC Inverter VRF 4.3 Connection Pipe 4.3.1 Schematic Diagram of Piping Connection Fig.16 4.3.2 Schematic Diagram of Piping Sequence AMV5-O785, AMV5-O900 Fig.17...
  • Page 22 GMV DC Inverter VRF 4.3.3 Allowable pipe length and drop height among indoor and outdoor units Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is shown in the figure below. Remark: Equivalent length of one Y-type manifold is about 0.5m. Fig.18 L10: Length from the first branch to the farthest IDU;...
  • Page 23 ② When the maximum length of the main pipe from ODU to the first branch of IDU is≥90m, then adjust the pipe size of the gas pipe and liquid pipe of main pipe according to the following table. Outdoor Model Gas pipe size(mm) Liquid pipe size(mm) AMV5-O785 Φ38.1 Φ22.2 AMV5-O900 Φ38.1 Φ22.2 ③...
  • Page 24 GMV DC Inverter VRF 4.3.4.2 Manifold at indoor unit side Manifold at indoor unit side can be selected as per total capacity of downstream indoor unit(s). Refer to the following table. Fig.20 Fig.21 R410A Refrigerant System Total capacity of downstream indoor unit(s) C (kW) Model C＜20.0 FQ01A/A...
  • Page 25 GMV DC Inverter VRF 4.3.4.3 Fitting pipe between manifolds Pipe size (between two manifolds at indoor unit side) is based on the total capacity of downstream indoor unit(s). Fig.22 Dimension of the pipe of indoor branch Total capacity of downstream indoor unit(s) C(kW) Gas Pipe(mm) Liquid Pipe (mm)

  • Page 26: Installation Of The Connection Pipe

    GMV DC Inverter VRF Pipe between indoor branch and IDU Rated capacity of indoor unit C(kW) Gas Pipe(mm) Liquid Pipe(mm) C≤2.8 Φ9.52 Φ6.35 2.8＜C≤5.0 Φ12.7 Φ6.35 5.0＜C≤14.2 Φ15.9 Φ9.52 14.2＜C≤25.2 Φ19.05 Φ9.52 25.2＜C≤28.0 Φ22.2 Φ9.52 4.4 Installation of the Connection Pipe Note: Before welding the pipeline sealing cap, please make sure there’s no refrigerant in pipeline.
  • Page 27 GMV DC Inverter VRF 4.4.2 Manifold (1) Y-type manifold, See the Fig. 25. T- type manifold, See the Fig.26 Fig. 25 Fig. 26 (2) Manifold has serveral pipe sections with different pipe size, which facilitates to match with various copper pipe. Use pipe cutter to cut in the middle of the pipe section with different pipe size and deburr as well.
  • Page 28 GMV DC Inverter VRF Fig.29 (4) Manifold is isolated by insulating material that can bear 120°C or higher temperature. Manifold attached foam can not be taken as insulating material. 4.4.3 Installation and thermal insulation for pipeline (1) For multi VRF system, every copper pipe should be labeled so as to avoid misconnection.
  • Page 29 GMV DC Inverter VRF Fixing point 2: 200 mm on the main branched pipe from the welding point Fixing point 3: 250 mm on the branched pipe from the welding point Fig.31 (4) Suspend the header to the ceiling, and be sure to install the T-type manifold so that the outlet pipes are horizontal at the lower side.

  • Page 30: Air Purging And Refrigerant Charge

    GMV DC Inverter VRF 2) For heat pump unit, liquid pipe should bear 70° C or above, and gas pipe should bear 120° C or above. For cooling only unit, both liquid pipe and gas pipe should bear 70° C or above. Example: Polyethylene foam can bear 120° C above and foaming polyethylene can bear 100°...
  • Page 31 GMV DC Inverter VRF 4.5.2 Additional refrigerant charging Outdoor unit has been charged refrigerant before delivery. Charge additional refrigerant for field-installed connecting pipe. If the pipeline is longer than 1m, please refer to the following table for charging amount of refrigerant. (Liquid pipe prevails) How much additional refrigerant should be charged Additional refrigerant amount R=additional refrigerant amount for piping A + additional...
  • Page 32 GMV DC Inverter VRF operation, charge additional R410A with specified amount to the unit through the filling opening of the liquid pipe valve of the outdoor unit. If required additional refrigerant can not be quickly filled for increase of pressure in the pipe, set the unit at cooling startup and then fill the refrigerant from gas valve of outdoor unit.

  • Page 33: Electric Wiring

    5-core cable is used and the wire size unit is mm Minimum Capacity of Minimum Sectional Area of Sectional Area of Model Power Supply circuit Power Cord Grounding breaker (A) （mm²×mm Wire(mm 380V-415V 3N～ 50Hz AMV5-O785 16.0 25×3+16×2 380V-415V 3N～ 50Hz AMV5-O900 16.0 25×3+16×2...
  • Page 34 GMV DC Inverter VRF Note: ① Specification of circuit breaker and power cord is selected on the basis of unit’s maximum power (max. current). ② Specification of power cord is based on the working condition where ambient temperature is 40° C and multi-core copper cable (working temperature is 90° C ) is lying on the surface of slot (IEC 60245).

  • Page 35: System Communication

    GMV DC Inverter VRF the ground screw nearby. b) Fasten the power cord with cable tie. c) Lay the power cable and communication cable for the ODU according to the marker of external connection circuit diagram. 4.7 System Communication 4.7.1 Communication system include: (1) Communication between ODU and IDU;...
  • Page 36 GMV DC Inverter VRF 4.7.2 Communication mode CAN bus mode is taken for communication between IDU and ODU and communication among IDUs. 4.7.3 Selection and connection mode of communication material 4.7.3.1 Select communication material Note: If air conditioners are installed at places where there’s strong electromagnetic interference, the communication wire of IDU and wired controller must use shielded wire and the communication wire between IDU and IDU/ODU must use shielded twisted pair.
  • Page 37 GMV DC Inverter VRF Fig.39 4.7.3.2 Connection mode of communication (1) All communication wires must be connected in series rather than in star. Fig.40 Fig.41 (2) All communication wires are connected by screws. Fig.42 (3) If a single communication wire is not long enough and needs to be connected, the connected joint must be welded or pressure-welded.

  • Page 38: Connection Method And Steps For System Communication

    GMV DC Inverter VRF 4.7.4 Communication address Auto addressing technology is adopted for IDU and ODU. No need to set address codes manually. Only the addresses of master unit and central control are needed to be set (address of central control is only needed when there are multiple refrigeration systems). Note: When installing remote monitor or central controller, displacement on indoor units’...
  • Page 39 GMV DC Inverter VRF 4.8.2 Communication connection between IDU and wired controller There are 4 kinds of connection between IDU and wired controller, as shown below: Fig.44 One wired controller controls one IDU Fig.45 Two wired controllers control one IDU Fig.46 One wired controller controls multiple IDUs...
  • Page 40 GMV DC Inverter VRF Fig.47 Two wired controllers control multiple IDUs When two wired controllers control multiple IDUs, the wired controller can be connected to any one IDU, provided that the connected IDU is of the same series. Meanwhile, one and only one of the wired controllers must be set as a slave controller.
  • Page 41 GMV DC Inverter VRF 4.8.3 Communication connection of central controlling units Note: The centralized controller can be installed when it is necessary. Port connection G1 and G2 on the wiring board XT2 of master unit among each multi VRF system. (see below) Fig.48...

  • Page 42: External Electrical Wiring Diagram

    GMV DC Inverter VRF 4.9 External Electrical Wiring Diagram Each unit should be equipped with a circuit breaker for short circuit protection and exceptional overload protection. Besides, a main circuit breaker shall be prepared for IDUs and ODUs in order to connect or disconnect power of the entire system. 4.9.1 External wiring diagram of a single unit Every unit should be equipped with a circuit breaker for short-circuit and overload protection.

  • Page 43: Check Items After Installation And Trial Run

    GMV DC Inverter VRF 5 Check Items after Installation and Trial Run 5.1 Check Items after Installation Check Items Conditions Might Happen Check Has the unit been fixed firmly? The unit may drop, shake or emit noise. It may cause insufficient cooling/heating Have you done the gas leakage test? capacity.
  • Page 44 GMV DC Inverter VRF oil balance valve; For dual/three module unit, fully open the gas, liquid valve and oil balance valve. 5.2.2 Trial run 5.2.2.1 Notices (1) Before test operation, make sure unit is power on and compressor has been preheated for more than 8 hours.
  • Page 45 GMV DC Inverter VRF (6) Description of each stage of debugging progress: Description of each stage of debugging progress Debugging —— Progress code Status code code LED1 LED2 LED3 Meaning progress Display Display Display Code code Code status status status light light light...
  • Page 46 GMV DC Inverter VRF Description of each stage of debugging progress Debugging —— Progress code Status code code LED1 LED2 LED3 Meaning progress Display Display Display Code code Code status status status components No error in outdoor components. Start light light light next progress.
  • Page 47 GMV DC Inverter VRF Description of each stage of debugging progress Debugging —— Progress code Status code code LED1 LED2 LED3 Meaning progress Display Display Display Code code Code status status status cooling mode. Error of other modules occurs during light light light...
  • Page 48 GMV DC Inverter VRF of outdoor unit; Step 2: disconnect power for outdoor units. According to design requirements of external static pressure, set up corresponding static pressure mode for the units. Setting methods can be seen in Outdoor Fan Static Pressure Setup SA6_ESP_S; Step 3: disconnect power for outdoor units and set one module as a master unit.
  • Page 49 GMV DC Inverter VRF Step 8: in progress 04, the quantity of IDUs needs to be confirmed manually. Main board of each module will display: Debugging code Progress code Status code LED1 LED2 LED3 Progress Code Display status Code Display status Code Display status 04_Confirm the...
  • Page 50 GMV DC Inverter VRF Step 10: progress 06 is “Detect outdoor components” If no error is detected, system will display as below and then start next progress. —— Debugging code Progress code Status code LED1 LED2 LED3 Meaning progress Display Display Display Code...
  • Page 51 GMV DC Inverter VRF Step 12: progress 08 is “Confirm preheated compressor” If more than 8h of preheat time is detected, system will display as below and start next progress. —— Debugging code Progress code Status code LED1 LED2 LED3 Meaning progress Display...
  • Page 52 GMV DC Inverter VRF Step 14: progress 10 is “Status judgments of outdoor valves before startup” If master unit displays below, status judgments are enabled. —— Debugging code Progress code Status code LED1 LED2 LED3 Meaning progress Code Display status code Display status Code...
  • Page 53 GMV DC Inverter VRF If it’s confirmed, press SW7 confirmation button. Unit will display as below and start next progress. —— Debugging code Progress code Status code LED1 LED2 LED3 Meaning progress Code Display status code Display status Code Display status 12_Status Manual calculation judgments of...
  • Page 54 GMV DC Inverter VRF Debugging —— Progress code Status code code LED1 LED2 LED3 Meaning progress Display Display Display Code code Code status status status System detects error in indoor pipeline. XXXX is the project no. of the faulted IDU. 3s later, error code U8 is Light Light XXXX/U8...
  • Page 55 GMV DC Inverter VRF Reference of Debug Parameters Debug item Parameter name Unit Reference system operational capacity, system’s high pressure value is 10 ~40° C higher than ambient temp The higher ambient temp is, the smaller temp difference is. ●When ambient temp is 25~35° C , system’s high pressure value in cooling mode is 44~53°...

  • Page 56: Common Malfunction And Troubleshooting

    Reduce heat resources Filter is blocked for dirt Clean the filter Note: If problem can not be solved after checking the above items, please contact ASAMI service center and show phenomena and models. Following circumstance are not malfunction. “Malfunction” Reason...

  • Page 57: Error Indication

    GMV DC Inverter VRF “Malfunction” Reason The unit blows out When unit runs after no operation for a long Dust in indoor unit is blew out duct period The unit emits The room odor absorbed by the unit is Operating odor blew out again Indoor unit still...
  • Page 58 GMV DC Inverter VRF Error Code Content Error Code Content Zero-crossing malfunction of PG Debugging status motor Indoor unit’s branch is not Malfunction of solar power inconsistent for one-to-more unit of temperature sensor heat recovery system Indoor PCB is poor Malfunction of swing parts Outdoor: Error Code...
  • Page 59 GMV DC Inverter VRF Error Code Content Error Code Content reversely Malfunction of temperature sensor of Drive PFC protection of compressor oil-return 2 Over-current protection of inverter Malfunction of temperature sensor of compressor oil return 3 Drive IPM module protection of Malfunction of temperature sensor of compressor oil return 4...
  • Page 60 GMV DC Inverter VRF Debugging: Error Code Content Error Code Content Preheat time of compressor is Alarm because ODU quantity is insufficient inconsistent Wrong setting of ODU’s capacity Abnormal communication of code/jumper cap converter Power supply phase sequence Emergency status of compressor protection Refrigerant-lacking protection Emergency status of fan...

  • Page 61: Maintenance And Care

    (4) In the event of rusting, use the anti-rust paint to stop spreading of rust. 8.5 Parts Replacement Purchase parts from ASAMI appointed service center or dealer if necessary. Note: During airtight and leakage test, never mix oxygen, ethyne and other dangerous gas into...

  • Page 62: After-Sales Service

    ASAMI. Warranty should meet the folowing requirements: (1) First run of the unit should be operated by professional personnel from ASAMI appointed service center. (2) Only ASAMI manufactured accessories can be used on the machine.

This manual is also suitable for:

Amv5-o900

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