Midea MH-SU65-RN8L Installation Instructions Manual
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Midea MH-SU65-RN8L Installation Instructions Manual

Midea MH-SU65-RN8L Installation Instructions Manual

Dc inverter air-cooled chiller air conditioner outdoor unit r32
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INSTALLATION INSTRUCTIONS
DC INVERTER AIR-COOLED CHILLER
AIR CONDITIONER OUTDOOR UNIT
R32
Thank you very much for purchasing our product,
Before using your unit , please read this manual carefully and keep it for future reference.
The figure shown in this manual is for reference only and may be slightly different from the actual product.

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  • Page 1 INSTALLATION INSTRUCTIONS DC INVERTER AIR-COOLED CHILLER AIR CONDITIONER OUTDOOR UNIT Thank you very much for purchasing our product, Before using your unit , please read this manual carefully and keep it for future reference. The figure shown in this manual is for reference only and may be slightly different from the actual product.

  • Page 2: Table Of Contents

    CONTENTS ACCESSORIES INTRODUCTION use conditions of the unit 2 SAFETY CONSIDERATION BEFORE INSTALLATION Handling of the unit 4 IMPORTANT INFORMATION ON REFRIGERANT 5 SELECTION OF INSTALLATION SITE PRECAUTIONS ON INSTALLATION Outline dimensional drawing Requirements of arrangement space of the unit Space requirements for parallel installation of multiple Modular units Installation foundation Installation of damping devices...
  • Page 3 11 MAINTENANCE AND UPKEEP 11.1 Failure information and code 11.2 Data display of wired controller 11.3 Care and maintenance 11.4 Removing scale 11.5 Winter shutdown 11.6 Replacing parts 11.7 First startup after shutdown 11.8 Refrigeration system 11.9 Disassembling compressor 11.10 Auxiliary electric heater 11.11 System antifreezing...

  • Page 4: Accessories

    ACCESSORIES Temperature testing Installation manual of Unit Installation & Operation Manual components of total Transformer wired controller water outlet Quantity Shape Purpose Use for installation (only need for setting the main module) 1 INTRODUCTION 1.1 Use conditions of the unit 1) The standard voltage of power supply is 380-415V 3N~50Hz, the minimum allowable voltage is 342V, and the maximum voltage is 456V.

  • Page 5: Safety Consideration

    2. SAFETY CONSIDERATION The precautions listed here are divided into the following types.They are quite important, so be sure to follow them carefully. Meanings of DANGER, WARNING, CAUTION and NOTE symbols. INFORMATION Read these instructions carefully before installation. Keep this manual in a handy for future peference. Improper installation of equipment or accessories may result in electric shock, short-circuit, leakage, fire or other damage to the equipment.
  • Page 6 WARNING Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants. Tear apart and throw away plastic packaging bags so that children will not play with them.Children that playing with plastic bags face danger of death by suffocation.

  • Page 7: Before Installation

    Do not install the unit in the following places: - Where there is mist of mineral oil, oil spray or vapors. Plastic parts may deteriorate, and cause possible loose or water to leak. - Where corrosive gases (such as sulphurous acid gas) are produced. Where corrosion of copper pipes or soldered parts may cause refrigerant leakage.

  • Page 8: Important Information On Refrigerant

    2) Lifting: each lifting rope (belt) should be able to bear 4 times the weight of the unit. Check the lifting hook and ensure that it is firmly attached to the unit. To avoid damages to the unit, a protective block made of wood , cloth or hard paper should be placed between the unit and rope when lifting, and its thickness should be 50mm or more.

  • Page 9: Precautions On Installation

    6 PRECAUTIONS ON INSTALLATION 6.1 Outline dimensional drawing Front view Left view Top view Fig. 6-1 Outline dimensional Table 6-1 Model 65KW 110KW 2000 2220 1135 1770 2300 NOTE After installing the spring damper, the total height of the unit will increase by 135mm approximately.

  • Page 10: Requirements Of Arrangement Space Of The Unit

    6.2 Requirements of arrangement space of the unit 1) To ensure adequate airflow entering the condenser, the influence of descending airflow caused by the high-rise buildings around upon the unit should be taken into account when installing the unit. 2) If the unit is installed where the flowing speed of air is high, such as on the exposed roof, the measures including sunk fence and Persian blinds can be taken, to prevent the turbulent flow from disturbing the air entering the unit.

  • Page 11: Space Requirements For Parallel Installation Of Multiple Modular Units

    6.3 Installation foundation (unit: mm) 6.3.1 Base structure 1991 Outdoor unit base structure design should take account of the 1550 following considerations: Inlet and outlet pipe side 1) A solid base prevents excess vibration and noise. Outdoor Electric control box side unit bases should be constructed on solid ground or on structures of sufficient strength to support the units’...

  • Page 12: Installation Of Damping Devices

    6.5.1 Measures used to prevent problems Anchor bolt caused by snow 1) Measures to prevent build-up of snow The base height should be as least the same as the predicted Ferrol snow depth in the local area. Damping device Outdoor unit Fig.

  • Page 13: Connection Drawing Of Pipeline System

    7 CONNECTION DRAWING OF PIPELINE SYSTEM This is the water system of standard module. Air conditioning mode Installation of variable frequency pump in the project Air conditioning and Domestic hot water mode Installation of variable frequency pump in the project...

  • Page 14: Overview Of The Unit

    Symbol explanation Drain vavle Water pressure instrument Water flow switch Gate valve Differential pressure by-pass valve Y-filter Thermometer Pump Check valve Atmospheric exhaust valve Safety valve Expansion tank Solenoid three-way valve Soft joint Fig.7-1 Connection drawing of pipeline system NOTE The ratio of the two - way valves on the terminal shall not exceed 50 percent.

  • Page 15: Opening The Uint

    8.2 Opening the uint Cover1 Cover 2 Cover 3 Cover 6 Cover 5 Cover 4 Fig. 8-3 Doors of 65KW Cover 1/2/3 give access to the compartment of water pipes and water side heat exchanger. Cover 4 give access to the electrical parts. Cover 5/6 give access to the hydraulic compartment.

  • Page 16: Outdoor Unit Pcbs

    8.3 Outdoor unit PCBs 8.3.1 MAIN PCB 1) Label descriptions are given in Table 8-2 Fig. 8-5 Main board of 65KW and 110KW Table 8-2 Detail information CN32：Main board power supply. CN99:slave board power supply. CN68:Pump(220-240V control power supply ) 1）After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the process of operation.
  • Page 17 Detail information CN18:Program burn in port(USB). CN28:Three-phase protector output switch.(Protection code E8) CN22:Outdoor units communication and wired controller conmunication port CN46:The power supply port of the wired controller (DC12V) CN26: Compressor inverter module and Fan inverter module communication ports CN300:Program burn in port(WizPro200RS programming device). CN109:Conmunicate with slave board CN41:System low pressure sensor CN40:System high pressure sensor...
  • Page 18 Fig. 8-6 Slave board of 65KW and 110KW Table 8-3 Detail information CN140:Power supply,220-240VAC input CN115:W-HEAT,Electric heater of water flow switch CN125:Three-way valve(hot-water valve) CN123:Pump(220-240V control power supply ) 1）After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the process of operation.

  • Page 19: Electric Wiring

    8.4 Electric wiring 8.4.1 Electric wiring CAUTION The air-conditioner should apply special power supply, whose voltage should conform to rated voltage. Wiring construction must be conducted by the professional technicians according to the labeling on the circuit diagram. The power wire and the grounding wire must be connected to the suitable terminals. The power wire and the grounding wire must be fasten up by suitable tools.
  • Page 20 8.4.4 Electrical wiring percautions c. It is advisable to use 3-core shielded cables for uint to minimize interference. Do not use the unshielded multicore conductor cables. a. On-site wiring, parts and materials must comply with the local and national regulations as well as relevant national electrical standards.
  • Page 21 8.4.6 Requirements for power supply wiring Correct Power distribution Manual transformer Lightning switch Fuses arrester Grounding wire Power 380-415V Building 3N~50Hz Uint Grounding 1 Grounding 2 Grounding 3 Wrong Power distribution transformer Manual Lightning arrester switch Fuses Grounding wire Power 380-415V 3N~50Hz Surge...
  • Page 22 NOTE Please use the round-type terminal with correct specifications to connect the power cord. 8.4.9 Wiring of “ON/OFF” weak electric port The remote function of “ON/OFF” must be set by DIP switch .The remote function of “ON/OFF” is effective when S1-1 or S5-3 is 8.4.8 Function of terminals chosen ON, at the same time, the wired controller is out of control.
  • Page 23 8.4.11 Wiring of “TEMP-SWITCH” weak 8.4.13 Control system and installation precautions electric port a. Use only shielded wires as control wires. Any other type of wires may produce a signal interference that will cause the units to The function of “TEMP-SWITCH” must be set by wired controller malfunction.
  • Page 24 8.4.14 Wiring instances If multiple units are connected in cascade, the unit address should be set on the DIP switch ENC1. With 0-F being valid, 0 indicates the master unit and 1-F indicate slave units. CN46 CN46 0-10V 3-way valve CN46 Fig.
  • Page 25 If multiple units are connected in cascade, the unit address should be set on the DIP switch ENC1. With 0-F being valid, 0 indicates the master unit and 1-F indicate slave units. CN46 CN46 0-10V 3-way valve CN46 Fig. 8-18 Networking communication schematic of main unit and auxiliary unit for 110KW...

  • Page 26: Water System Installation

    j) To facilitate maintenance, the inlet and outlet pipes NOTE should be provided with thermometer or manometer. The unit is not equipped with pressure and temperature When the power cord is parallel to the signal wire, instruments, so they need to be purchased by the user. make sure that they are enclosed in respective k) All low positions of the water system should be conduits and are kept a reasonable wire spacing.
  • Page 27 8.5.2 Connection mode of pipe The water inlet and outlet pipes are installed and connected as shown in the following figures. 65KW,110KW model uses hoop connection. For the specifications of the water pipes and screw thread, see the Table 8-6 below. Table 8-6 Model Pipe connection methods...
  • Page 28 Error Recommendation Error Recommendation Fig.8-20 Design of the store tank 8.5.4 Minimum chilled water flow 8.5.7 Selection and installation of the pump The minimum chilled water flow is shown in the table 8-7 1) Select the pump The unit must be equipped with variable frequency pump. If the system flow is less than the minimum unit flow rate, the evaporator flow can be recirculated, as shown in the a) Select the water-flow of the pump...
  • Page 29 2) Applicable standard of water quality for the unit Table 8-8 PH value 6.8~8.0 Sulfate <50ppm Total hardness <70ppm Silicon <30ppm Conductivity <200μV/cm(25°C) Iron content <0.3ppm Sulfide ion Sodium ion No requirement Chloride ion <50ppm Calcium ion <50ppm Ammonia ion 8.5.9 Installation of multi-module water system pipeline Multi-module combination installation involves special design of the unit, so relevant explanation is given as follows.

  • Page 30: Strat-Up And Configruation

    8.5.10 Installation of single or multiple b. Multiple water pumps water pumps Each unit is required to install a one-way valve when multiple 1) DIP switch pumps are installed, refer to figure as follow. The choice of DIP switch see Table 8-4 in detail when single or multiple water pumps are installed for MH-SU65-RN8 and MH- SU110-RN8.

  • Page 31: Test Run And Final Check

    10 TEST RUN AND FINAL CHECK 10.1 Check item table after installation ·Table 10-1 Checking item Description Units are fixed mounting on level base. Ventilating space for heat exchanger at the air side is meeting for requirement Maintenance space is meeting for requirement. Whether installing site is meet for requirements Noise and vibration is meeting for requirement.

  • Page 32: Maintenance And Upkeep

    11 MAINTENANCE AND UPKEEP 11.1 Failure information and code In case the unit runs under abnormal condition, failure protection code will display on both control panel and wired controller, and the indicator on the wired controller will flash with 1Hz. The display codes are shown in the following table: Table11-1 65KW and 110KW No.
  • Page 33 No. Code Content Note 1F4 module A L0 or L1 protection occursfor 3 times in 60 minutes Recovered by power off 2F4 module B L0 or L1 protection occursfor 3 times in 60 minutes Recovered by power off 1F6 A system bus voltage error (PTC) Recovered upon error recovery 2F6 B system bus voltage error (PTC) Recovered upon error recovery...

  • Page 34: Data Display Of Wired Controller

    11.2 Digital display of main board Close attention should be paid to the discharge and suction pressure during the running process. Find out reasons and eliminate the failure if abnormality is The data display area is divided into Up area and Down area, found.

  • Page 35: First Startup After Shutdown

    11.7 First startup after shutdown 11.9 Disassembling compressor The folowing preparations should be made for re-startup of unit Follow the following procedures if compressor needs to be after long-time shutdown: disassembled: 1) Thoroughly check and clean unit. 1) Cut off the power supply of unit. 2) Clean water pipe system.

  • Page 36: Replacement Of Safety Valve

    11.12 Replacement of safety valve Replace the safety valve as follows: 1) Reclaim the refrigerant completely in the system. Doing so requires professional staff and equipment; 2) Note to protect the tank coating. Please avoid damaging to coating from external force or high temperature when removing and installing the safety valve;...

  • Page 37: Information Servicing

    INFORMATION SERVICING 11.13 1) Checks to the area Before working on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minmised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
  • Page 38 b) Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc.
  • Page 39 Label the system when charging is complete(if not already). Extreme care shall be taken not to overfill the refrigeration system. Before recharging the system it shall be pressure tested with OFN. The system shall be leak tested on completion of charging but prior to commissioning.

  • Page 40: Record Table Of Test Run And Maintenance

    RECORD TABLE OF TEST RUN AND MAINTENANCE Table 11-2 Model: Code labeled on the unit: Customer name and address: Date: 1. Check temperature of chilled water or hot water Inlet ( Outlet ( 2. Check air temperature of air-side heat exchanger: Inlet ( Outlet ( 3.

  • Page 41: Applicable Models And Main Parameters

    12 APPLICABLE MODELS AND MAIN PARAMETERS Table 12-1 65KW 110KW Cooling capacity 57.0 100.0 Heating capacity 65.0 110.0 Standard cooling input 19.0 32.8 Cooling rated current 29.3 50.6 Standard heating input 18.3 29.9 Heating rated current 28.2 46.1 Power supply 380-415V 3N~ 50Hz Operation control Control of wired controller, auto startup, running state display, failure alert etc.

  • Page 42: Information Requirements

    GWP of the refrigerant (100 years) Standard rating conditions used: Low temperature application GD Midea Heating & Ventilating Equipment Co. , Ltd. Contact details Penglai industry Road, Beijiao, Shunde, Foshan, Guangdong, 528311 P.R. China. (*) If C is not determined by measurement then the default degradation coefficient of chillers shall be 0,9.
  • Page 43 GWP of the refrigerant (100 years) Standard rating conditions used: Low temperature application GD Midea Heating & Ventilating Equipment Co. , Ltd. Contact details Penglai industry Road, Beijiao, Shunde, Foshan, Guangdong, 528311 P.R. China. (*) If C is not determined by measurement then the default degradation coefficient of chillers shall be 0,9.
  • Page 44 Table 13-3 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 65KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Low-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the warmer climate conditions.
  • Page 45 Table 13-4 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 65KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Medium -temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the warmer climate conditions.
  • Page 46 Table 13-5 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 65KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Low-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the average climate conditions.
  • Page 47 Table 13-6 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 65KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Medium-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the average climate conditions.
  • Page 48 Table 13-7 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 65KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Low-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the colder climate conditions.
  • Page 49 Table 13-8 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 65KW Air-to-water heat pump: [yes] [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Medium-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the colder climate conditions.
  • Page 50 Table 13-9 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 110KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Low-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the warmer climate conditions .
  • Page 51 Table 13-10 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 110KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Medium -temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the warmer climate conditions .
  • Page 52 Table 13-11 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 110KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Low-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the average climate conditions .
  • Page 53 Table 13-12 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 110KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Medium-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the average climate conditions.
  • Page 54 Table 13-13 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 110KW [yes] Air-to-water heat pump: [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Low-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: In the table, the data are the parameters of the unit under the colder climate conditions.
  • Page 55 Table 13-14 Information requirements for heat pump space heaters and heat pump combination heaters Model(s): 110KW Air-to-water heat pump: [yes] [yes/no] Water-to-water heat pump: [yes/no] Brine-to-water heat pump: [yes] Medium-temperature heat pump: [yes/no] Equipped with a supplementary heater: [yes/no] Heat pump combination heater: F In the table, the data are the parameters of the unit under the colder climate conditions.
  • Page 56 GD Midea Heating &Ventilating Equipment Co.,Ltd. Penglai Industry Road,Beijiao, Shunde, Foshan, Guangdong,528311,P.R.China 16127100A10230 V1.0...
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