Midea V6R Series Manual
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Midea V6R Series Manual

Commercial air conditioners
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Engineering Data
MV6-R252WV2GN1
MV6-R280WV2GN1
MV6-R335WV2GN1
MV6-R400WV2GN1
Commercial Air Conditioners
Series VRF
MV6-R450WV2GN1
MV6-R500WV2GN1
MV6-R560WV2GN1
R410A

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Summary of Contents for Midea V6R Series

  • Page 1 R410A Commercial Air Conditioners Engineering Data Series VRF MV6-R252WV2GN1 MV6-R450WV2GN1 MV6-R280WV2GN1 MV6-R500WV2GN1 MV6-R335WV2GN1 MV6-R560WV2GN1 MV6-R400WV2GN1...
  • Page 2 V6R VRF 50/60Hz CONTENTS Part 1 General Information ................3 Part 2 Outdoor Unit Engineering Data ............21 Part 3 System Design and Installation ............119...
  • Page 3 V6R VRF 50/60Hz...

  • Page 4: Table Of Contents

    V6R VRF 50/60Hz Part 1 General Information 1 Indoor and Outdoor Unit Capacities ............4 2 External Appearance .................. 6 3 Outdoor Unit Combinations ..............10 4 Nomenclature ..................11 5 Combination Ratio ................... 13 6 Selection Procedure ................. 15...

  • Page 5: Indoor And Outdoor Unit Capacities

    28.0 Notes: V6R series outdoor units are compatible with the 2nd generation DC VRF indoor unit and 2nd generation AC VRF indoor units (which will be released soon). 1.1.2 Fresh air processing unit Table 1-1.3: Fresh air processing unit capacity range Capacity 12.5kW...
  • Page 6 V6R VRF 50/60Hz 1.3 High Temperature Hydro Module Table 1-1.5: High temperature hydro module capacity range Capacity 14kW Capacity index 1.4 Outdoor Units Table 1-1.6: Outdoor unit capacity range Capacity Model Name Combination Type MV6-R252WV2GN1 MV6-R280WV2GN1 10HP MV6-R335WV2GN1 12HP MV6-R400WV2GN1 14HP MV6-R450WV2GN1 16HP...

  • Page 7: External Appearance

    V6R VRF 50/60Hz 2 External Appearance 2.1 Indoor Units 2.1.1 VRF indoor units Table 1-2.1: VRF indoor unit appearance One-way Cassette Two-way Cassette Compact Four-way Cassette Four-way Cassette Medium Static Pressure Duct High Static Pressure Duct Wall-mounted Ceiling & Floor Floor Standing Console 2.1.2 Fresh air processing unit...
  • Page 8 V6R VRF 50/60Hz 2.2 Heat Recovery Ventilator Table 1-2.3: Heat recovery ventilator appearance Heat Recovery Ventilator 2.3 High Temperature Hydro Module Table 1-2.4: High temperature hydro module appearance High Temperature Hydro Module...
  • Page 9 V6R VRF 50/60Hz 2.4 Outdoor Units 2.4.1 Single units Table 1-2.5: Single outdoor unit appearance 8/10/12HP 14/16/18/20HP (with single fan) (with dual fan) 2.4.2 Combinations of units Table 1-2.6: Combination outdoor unit appearance 22HP 24/26/28/30HP 32/34/36/38/40HP 42/44HP 46/48/50/52/54/56/58/60HP...
  • Page 10 V6R VRF 50/60Hz 2.5 Mode Selection Box Table 1-2.7: MS box appearance Max. number of Model name Appearance downstream indoor units MS01/N1-D MS04/N1-D MS06/N1-D MS08/N1-D MS10/N1-D MS12/N1-D Notes: MS01 can be ceiling-suspended installed and wall-mounted installed. Low temperature cooling operation and leakage detection function are available in MS01.

  • Page 11: Outdoor Unit Combinations

    V6R VRF 50/60Hz 3 Outdoor Unit Combinations Table 1-3.1: Outdoor unit combinations System capacity Modules Number Outdoor branch of units joint kit 22.4 ● 28.0 ● 33.5 ● 40.0 ● — 45.0 ● 50.0 ● ● 56.0 61.5 ● ● 68.0 ●...

  • Page 12: Nomenclature

    ○ ○ ○ ○ 1 Legend Code Remarks Midea VRF indoor unit The 2nd generation VRF DC indoor unit Capacity index (the capacity in kW multiplied by 10) Indoor unit type Q1: One-way Cassette Q2: Two-way Cassette Q4C: Compact Four-way Cassette...
  • Page 13   SMK - D 140 H H N1-3   ○ ○ ○ ○ ○ ○ 1       Legend Code Remarks 1  SMK  Midea hydro module  2  D  Used for VRF system  3  140  Capacity index (the capacity in kW multiplied by 10) 4  H  High temperature type  Power supply  5  H  Omit: 1 phase, 220‐240V, 50Hz  H: 1 phase, 220‐240V, 50/60Hz  6 ...

  • Page 14: Combination Ratio

    Notes: V6R series outdoor units are compatible with the 2nd generation DC VRF indoor unit and 2nd generation AC VRF indoor units (which will be released soon). When HT hydro module units are installed together with VRF indoor units, the total capacity of HT hydro module units must not exceed 100% of the total capacity of the outdoor units and the combination ratio must not exceed 200%.
  • Page 15 V6R VRF 50/60Hz Table 1-5.2: Combinations of indoor and outdoor units Outdoor unit capacity Sum of capacity indexes Maximum number of connected VRF indoor units + Capacity VRF indoor units VRF indoor units + VRF indoor units + indoor units fresh air processing index only...

  • Page 16: Selection Procedure

    V6R VRF 50/60Hz 6 Selection Procedure 6.1 Procedure Step 1: Establish design conditions Design temperature and humidity (indoor and outdoor) Required heat load of each room System peak load Piping length, level differences Indoor unit specifications (type and quantity) Step 2: Select indoor units Decide indoor unit safety factor Select indoor unit models ensuring that: Indoor unit capacity corrected for indoor air temperature WB...
  • Page 17 V6R VRF 50/60Hz 6.2 Example The following is a selection example based on total heat load for cooling. All the indoor units are VRF indoor unit. Figure 1-6.1: Room plan Room F Room E Room A Room D Room B Room C Step 1: Establish design conditions ...
  • Page 18 V6R VRF 50/60Hz Table 1-6.2: Extract from medium static pressure duct (T2) cooling capacity table Indoor air temperature Capacity 14°C WB 16°C WB 18°C WB 19°C WB 20°C WB 22°C WB 24°C WB Model index 20°C DB 23°C DB 26°C DB 27°C DB 28°C DB 30°C DB...
  • Page 19 V6R VRF 50/60Hz Table 1-6.5: Extract from Table 1-5.2 Combinations of Indoor and outdoor units Outdoor unit capacity Sum of capacity indexes Maximum number of connected VRF indoor units VRF indoor units + Capacity VRF indoor units VRF indoor units indoor units + HT hydro fresh air processing...
  • Page 20 V6R VRF 50/60Hz Find the correction factor for piping length and level difference (“K1”) Figure 1-6.3: V6R rate of change in cooling capacity 0.84 0.83 0.82 0.81 0.80 0.79 0.85 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.00 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 1.00 0.98 0.96...
  • Page 21 V6R VRF 50/60Hz...
  • Page 22 V6R VRF 50/60Hz Part 2 Outdoor Unit Engineering Data 1 Specifications ................... 22 2 Dimensions ....................33 3 Center of Gravity ..................39 4 Installation Space Requirements .............. 40 5 Piping Diagrams ..................43 6 Wiring Diagrams ..................46 7 Electrical Characteristics ................50 8 Functional Components and Safety Devices ..........
  • Page 23 V6R VRF 50/60Hz 1 Specifications 1.1 Outdoor Units 8-12HP Table 2-1.1: 8-12HP specifications Model name MV6-R252WV2GN1 MV6-R280WV2GN1 MV6-R335WV2GN1 Power supply V/N/Hz 380-415/3/50(60) Capacity 22.4 33.5 Cooling Power input 5.25 7.18 8.64 4.27 3.90 3.88 Capacity 22.4 33.5 Heating (Rated) Power input 3.96 5.46 6.57...
  • Page 24 V6R VRF 50/60Hz 16-20HP Table 2-1.2: 16-20HP specifications MV6- MV6- MV6- MV6- Model name R400WV2GN1 R450WV2GN1 R500WV2GN1 R560WV2GN1 Power supply V/N/H 380-415/3/50(60) Capacity Cooling Power input 9.83 12.00 13.81 17.39 4.07 3.75 3.62 3.22 Capacity Heating (Rated) Power input 8.26 9.78 11.90 14.77...
  • Page 25 V6R VRF 50/60Hz 22-26HP Table 2-1.3: 22-26HP specifications Model name MV6-R615WV2GN1 MV6-R680WV2GN1 MV6-R735WV2GN1 Combination type 10HP+12HP 10HP+14HP 12HP+14HP Power supply V/N/Hz 380-415/3/50(60) Capacity 61.5 73.5 Cooling Power input 15.82 17.01 18.46 3.89 4.00 3.98 Capacity 61.5 73.5 Heating (Rated) Power input 12.03 13.72 14.83...
  • Page 26 V6R VRF 50/60Hz 28-32HP Table 2-1.4: 28-32HP specifications Model name MV6-R785WV2GN1 MV6-R835WV2GN1 MV6-R900WV2GN1 Combination type 12HP+16HP 12HP+18HP 16HP+16HP Power supply V/N/Hz 380-415/3/50(60) Capacity 78.5 83.5 Cooling Power input 20.64 22.45 24.00 3.80 3.72 3.75 Capacity 78.5 83.5 Heating (Rated) Power input 16.35 18.47 19.57...
  • Page 27 V6R VRF 50/60Hz 34-38HP Table 2-1.5: 34-38HP specifications Model name MV6-R950WV2GN1 MV6-R1000WV2GN1 MV6-R1060WV2GN1 Combination type 16HP+18HP 18HP+18HP 18HP+20HP Power supply V/N/Hz 380-415/3/50(60) Capacity Cooling Power input 25.81 27.62 31.20 3.68 3.62 3.40 Capacity Heating (Rated) Power input 21.69 23.81 26.67 4.38 4.20 3.97...
  • Page 28 V6R VRF 50/60Hz 40-44HP Table 2-1.6: 40-44HP specifications Model name MV6-R1120WV2GN1 MV6-R1185WV2GN1 MV6-R1235WV2GN1 Combination type 20HP+20HP 12HP+14HP+16HP 12HP+16HP+16HP Power supply V/N/H 380-415/3/50(60) Capacity 118.5 123.5 Cooling Power input 34.78 30.46 32.64 3.22 3.89 3.78 Capacity 118.5 123.5 Heating (Rated) Power input 29.53 24.62 26.13...
  • Page 29 V6R VRF 50/60Hz 46-50HP Table 2-1.7: 46-50HP specifications Model name MV6-R1300WV2GN1 MV6-R1350WV2GN1 MV6-R1400WV2GN1 Combination type 14HP+16HP+16HP 16HP+16HP+16HP 16HP+16HP+18HP Power supply V/N/Hz 380-415/3/50(60) Capacity Cooling Power input 33.83 36.00 37.81 3.84 3.75 3.70 Capacity Heating (Rated) Power input 27.83 29.35 31.47 4.67 4.60 4.45...
  • Page 30 V6R VRF 50/60Hz 52-56HP Table 2-1.8: 52-56HP specifications Model name MV6-R1450WV2GN1 MV6-R1500WV2GN1 MV6-R1560WV2GN1 Combination type 16HP+18HP+18HP 18HP+18HP+18HP 18HP+18HP+20HP Power supply V/N/Hz 380-415/3/50(60) Capacity Cooling Power input 39.62 41.44 45.01 3.66 3.62 3.47 Capacity Heating (Rated) Power input 33.59 35.71 38.58 4.32 4.20 4.04...
  • Page 31 V6R VRF 50/60Hz 58-60HP Table 2-1.9: 58-60HP specifications Model name MV6-R1620WV2GN1 MV6-R1680WV2GN1 Combination type 18HP+20HP+20HP 20HP+20HP+20HP Power supply V/N/Hz 380-415/3/50(60) Capacity Cooling Power input 48.59 52.17 3.33 3.22 Capacity Heating (Rated) Power input 41.44 44.30 3.91 3.79 Capacity Heating (Max) Power input 51.42 54.98...
  • Page 32 V6R VRF 50/60Hz 1.2 Mode Selection Box MS01/N1-D / MS04/N1-D / MS06/N1-D Table 2-1.10: MS01/N1-D, MS04/N1-D, MS06/N1-D specifications MS01/N1-D MS04/N1-D MS06/N1-D Model name Power supply V/ph/Hz 220-240/1/50(60) Max. number of indoor unit groups Max. number of units per group Max. number of downstream indoor units Max.
  • Page 33 V6R VRF 50/60Hz MS08/N1-D / MS10/N1-D / MS12/N1-D Table 2-1.11: MS08/N1-D, MS10/N1-D, MS12/N1-D specifications MS08/N1-D MS10/N1-D MS12/N1-D Model name 220-240/1/50(60) Power supply V/ph/Hz Max. number of indoor unit groups Max. number of units per group Max. number of downstream indoor units Max.
  • Page 34 V6R VRF 50/60Hz 2 Dimensions 2.1 Single Units 8/10/12HP Figure 2-2.1: 8/10/12HP dimensions (unit: mm) 14/16/18/20HP Figure 2-2.2: 14/16/18/20HP dimensions (unit: mm) 1340...
  • Page 35 V6R VRF 50/60Hz 2.2 Combinations of Units 22HP Figure 2-2.3: 22HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 1 100-500 24/26/28/30HP Figure 2-2.4: 24/26/28/30HP dimensions (unit: mm) Outdoor unit 1 Outdoor unit 2 100-500 1340...
  • Page 36 V6R VRF 50/60Hz 32/34/36/38/40HP Figure 2-2.5: 32/34/36/28/40HP dimensions (unit: mm) Outdoor unit 1 Outdoor unit 2 100-500 1340 1340 42/44HP Figure 2-2.6: 42/44HP dimensions (unit: mm) Outdoor unit 3 Outdoor unit 1 Outdoor unit 2 100-500 100-500 1340 1340...
  • Page 37 V6R VRF 50/60Hz 46/48/50/52/54/56/58/60HP Figure 2-2.7: 46/48/50/52/54/56/58/60HP dimensions (unit: mm) Outdoor unit 3 Outdoor unit 1 Outdoor unit 2 100-500 100-500 1340 1340 1340...
  • Page 38 V6R VRF 50/60Hz 2.3 Mode Selection Box MS01 Figure 2-2.8: Ceiling-suspended type MS01 dimensions (unit: mm) Notes : MS01 can be ceiling-supended installed and wall-mounted installed. MS01 is for low temperature cooling operation and leakage detection. Figure 2-2.9: Wall-mounted type MS01 dimensions (unit: mm) Notes : MS01 can be ceiling-supended installed and wall-mounted installed.
  • Page 39 V6R VRF 50/60Hz MS04-12 Figure 2-2.8: MS04-12 dimensions (unit: mm) Table 2-1.1: MS04-12 sdimensions (unit :mm) Model MS04 MS06 MS08 MS10 1195 1008 MS12...
  • Page 40 V6R VRF 50/60Hz 3 Center of Gravity 8/10/12HP Figure 2-3.1: 8/10/12HP center of gravity (unit: mm) Center of gravity 14/16/18/20HP Figure 2-3.2: 14/16/18/20HP center of gravity (unit: mm) 1350...
  • Page 41 V6R VRF 50/60Hz 4 Installation Space Requirements 4.1 Outdoor Units Space Requirements For single unit installation For single row installation Figure 2-4.1: Single unit installation (unit: mm) Figure 2-4.2: Single row installation (unit: mm) >1000 >1000 100-500 >1000 >1000 >1000 >1000 Front 100-500...
  • Page 42 V6R VRF 50/60Hz 4.2 Mode Selection Box Space Requirements MS01 Figure 2-4.5: MS01 installation requirement (unit: mm) Unit: mm Ceiling concrete Firmly secured pipe 150 or more Firmly secured pipe hanger hanger Refrigerant pipe 1000 or less 1000 or less 50 or more Ceiling Top surface of the MS...
  • Page 43 V6R VRF 50/60Hz MS04-12 Figure 2-4.6: MS04-12 installation requirement (unit: mm) Ceiling concrete Unit: mm Firmly secured pipe hanger 150 or more Refrigerant pipe 1000 or less 1000 or less 50 or more Ceiling Unit: mm Ceiling concrete 150 or more Firmly secured pipe hanger Refrigerant pipe...
  • Page 44 V6R VRF 50/60Hz 5 Piping Diagrams Figure 2-5.1: 8HP/10HP/12HP piping diagram Legend Parts name Parts name Inverter compressor Compressor vapor injection valve ( SV8A) Discharge temperature switch Injection bypass solenoid valve(SV5) Plate heat exchanger FAN A Electronic expansion valve (EEVC) 4-way valve Stop valve (liquid side) Pressure relief valve (customization option)
  • Page 45 V6R VRF 50/60Hz Figure 2-5.2: 14HP/16HP/18HP/20HP piping diagram Legend Parts name Parts name Inverter compressor Refrigerant charge solenoid valve(SVC) (customization option) Discharge temperature switch Pressure relief valve (customization option) Plate heat exchanger 4-way valve Electronic expansion valve (EEVC) Injection bypass solenoid valve(SV5) Stop valve (liquid side) FAN A Stop valve (high pressure gas side)
  • Page 46 V6R VRF 50/60Hz Key components: 1. Oil separator: Separates oil from gas refrigerant pumped out of the compressor and quickly returns it to the compressor. Separation efficiency is up to 99%. 2. Gas-liquid separator: Separates liquid refrigerant from gas refrigerant, stores liquid refrigerant and oil to protect compressor from liquid hammering.
  • Page 47 V6R VRF 50/60Hz         6 Wiring Diagrams Figure 2‐6.1: V6R wiring diagram  T7C1 EEVC T8 TL L-YL1 O-FAN CN26 CN72 CN12 CN10 CN16 CN27 EEVA N-ON H-PRO L-PRO INV1 INV2 H-YL1 T4 T3 CN70 CN82 CN18 CN19 CN14 CN15 CN17 CN28  ...
  • Page 48 V6R VRF 50/60Hz       Figure 2‐6.2: MS01 wiring diagram   ...
  • Page 49 V6R VRF 50/60Hz         Figure 2‐6.3: MS04/MS06 wiring diagram       ...
  • Page 50 V6R VRF 50/60Hz       Figure 2‐6.4: MS08/MS10/MS12 wiring diagram   ...
  • Page 51 V6R VRF 50/60Hz 7 Electrical Characteristics Table 2-7.1: Outdoor unit electrical characteristics Model Power Supply Compressor Min. Max. Capacity Modules Volts TOCA volts volts 50/60 380~415 21.3 12.2 0.92 10HP 50/60 380~415 25.5 16.5 0.92 12HP 50/60 380~415 27.7 17.2 0.92 14HP 50/60...
  • Page 52 V6R VRF 50/60Hz Table 2-7.2: MS box electrical characteristics Power Supply Rated power Model Min. Max. Volts volts volts MS01 220~240 0.30 MS04 220~240 0.38 MS06 220~240 0.63 MS08 220~240 0.80 MS10 220~240 0.90 MS12 220~240 1.10 Notes: 1. Units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits. 2.
  • Page 53 V6R VRF 50/60Hz Table 2-9.14: 20HP heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. Combination (%) (Capacity index) °C DB °C WB -25.4 32.65 13.03 33.86 13.88 33.15 14.13 33.28 14.40 33.41 14.68 32.49 14.86 -19.8 38.82 14.94 38.84 15.52...
  • Page 54 V6R VRF 50/60Hz 9.3 Capacity Correction Factors for Piping Length and Level Difference Figure 2-9.1: Rate of change in cooling capacity H (m) H (m) 0.84 0.83 0.82 0.81 0.80 0.79 0.85 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.00 L (m) 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 1.00...
  • Page 55 V6R VRF 50/60Hz 9.3 Capacity Correction Factors for Frost Accumulation The heating capacity tables do not take account of the reduction in capacity when frost has accumulated or while the defrosting operation is in progress. If snow has accumulated against the outside surface of the outdoor unit heat exchanger heating capacity is reduced.
  • Page 56 V6R VRF 50/60Hz 10 Operating Limits Figure 2-10.1: Cooling operating limits Figure 2-10.2: DHW operating limits Cooling IDU required DHW operation range Low temp. operation range for MS01 10 15 20 25 30 Indoor temperature ( C WB) Figure 2-10.3: Heating operating limits 10 15 20 25 30 35 Indoor temperature ( C DB)
  • Page 57 V6R VRF 50/60Hz 11 Sound Levels 11.1 Overall Table 2-11.1: Sound pressure level Model dB(A) Model dB(A) Model dB(A) 26HP 44HP 10HP 28HP 46HP 12HP 30HP 48HP 14HP 32HP 50HP 16HP 34HP 52HP 18HP 36HP 54HP 20HP 38HP 56HP 22HP 40HP 58HP 24HP...
  • Page 58 V6R VRF 50/60Hz 11.2 Octave Band Levels Figure 2-11.2: 8HP octave band level NR-90 NR-85 NR-80 NR-75 NR-70 NR-65 NR-60 NR-55 NR-50 NR-45 NR-40 NR-35 NR-30 NR-25 NR-20 1000 2000 4000 8000 dB(A) Octave band center frequency (Hz) Figure 2-11.3: 10HP octave band level NR-90 NR-85 NR-80...
  • Page 59 V6R VRF 50/60Hz Figure 2-11.4: 12HP octave band level NR-90 NR-85 NR-80 NR-75 NR-70 NR-65 NR-60 NR-55 NR-50 NR-45 NR-40 NR-35 NR-30 NR-25 NR-20 1000 2000 4000 8000 dB(A) Octave band center frequency (Hz) Figure 2-11.5: 14HP octave band level NR-90 NR-85 NR-80...
  • Page 60 V6R VRF 50/60Hz Figure 2-11.6: 16HP octave band level NR-90 NR-85 NR-80 NR-75 NR-70 NR-65 NR-60 NR-55 NR-50 NR-45 NR-40 NR-35 NR-30 NR-25 NR-20 1000 2000 4000 8000 dB(A) Octave band center frequency (Hz) Figure 2-11.7: 18HP octave band level NR-90 NR-85 NR-80...
  • Page 61 V6R VRF 50/60Hz Figure 2-11.8: 20HP octave band level NR-90 NR-85 NR-80 NR-75 NR-70 NR-65 NR-60 NR-55 NR-50 NR-45 NR-40 NR-35 NR-30 NR-25 NR-20 1000 2000 4000 8000 dB(A) Octave band center frequency (Hz)
  • Page 62 V6R VRF 50/60Hz 12 Accessories 12.1 Outdoor Unit Standard Accessories Table 2-12.1: Outdoor unit standard accessories Name Shape Quantity Function Installation manual Owner’s manual Erp. information Information requirements Tie wrap Screw pack Reserved for maintenance 90° elbow To connect piping (For 10-20HP) Seal plug To clean pipes Connection pipe...
  • Page 63 V6R VRF 50/60Hz 12.3 Optional Accessories Table 2-12.4: Optional accessories Packed dimensions Net/gross weight Optional accessories Model Function (mm) (kg) FQZHW-02SB1 272×167×232 2.7/3.5 Outdoor branch joint kits FQZHW-03SB1 472×157×312 4.9/6.1 FQZHN-01D 290×105×100 0.3 / 0.4 Branch joint kits /branch FQZHN-02D 290×105×100 0.4 / 0.6 headers for joints between...
  • Page 64 V6R VRF 50/60Hz Part 3 System Design and Installation 1 Preface to Part 3 ..................120 2 Unit Placement and Installation ............. 121 3 Outdoor Unit Ducting and Shielding ............130 4 Refrigerant Piping Design ............... 135 5 Refrigerant Piping Installation ..............150 6 Drain Piping ...................

  • Page 65: Preface To Part 3

    1.1 Notes for Installers Boxes The information contained in this Engineering Data Book may primarily be of use during the system design stage of a Midea V6R Series VRF project. Additional important information which may primarily be of use during field installation has been placed in boxes, such as the example below, titled “Notes for installers”.

  • Page 66: Unit Placement And Installation

    V6R VRF 50/60Hz 2 Unit Placement and Installation 2.1 Outdoor Units 2.1.1 Placement considerations Placement of outdoor units should take account of the following considerations:  Air conditioners should not be exposed to direct radiation from a high-temperature heat source. ...
  • Page 67 V6R VRF 50/60Hz Figure 3-2.3: Multi-row installation (unit: mm) 1000 or more 100 to 500 1000 or more 1000 or more 1000 or more Front 100 to 500 100 to 500 1000 or more 1000 or more Front 100 to 500 1000 or more 100 to 500 1000 or more...
  • Page 68 V6R VRF 50/60Hz 2.1.4 Base structures Outdoor unit base structure design should take account of the following considerations:  A solid base prevents excess vibration and noise. Outdoor unit bases should be constructed on solid ground or on structures of sufficient strength to support the units’ weight. ...
  • Page 69 V6R VRF 50/60Hz 2.1.5 Acceptance and unpacking  Notes for installers  When units are delivered check whether any damage occurred during shipment. If there is damage to the surface or outside of a unit, submit a written report to the shipping company. ...
  • Page 70 V6R VRF 50/60Hz MS01 Figure 3-2.8: MS01 installation requirement (unit: mm) Unit: mm Ceiling concrete Firmly secured pipe 150 or more Firmly secured pipe hanger hanger Refrigerant pipe 1000 or less 1000 or less 50 or more Ceiling Top surface of the MS Control box 500 or more 500 or more...
  • Page 71 V6R VRF 50/60Hz MS04-12 Figure 3-2.9: MS04-12 installation requirement (unit: mm) Ceiling concrete Unit: mm Firmly secured pipe hanger 150 or more Refrigerant pipe 1000 or less 1000 or less 50 or more Ceiling Unit: mm Ceiling concrete 150 or more Firmly secured pipe hanger Refrigerant pipe...
  • Page 72 V6R VRF 50/60Hz 2.2.3 Hanging brackets MS box hanging brackets installation should take account of the following considerations:  Use a suspension bolt size of M10  Use mold-in inserts and embedded foundation bolts for new installations or hole-in anchor bolts or similar hardware for existing installations, taking care to install them in a manner that can withstand the unit’s weight.
  • Page 73 V6R VRF 50/60Hz Remove 4 screws shown in the figure on the below, remove the electrical box to the opposite side. Figure 3-2.13: Step 3 for electric control box replacing Attach the electrical box and electrical box cover to the other side and secure them with the screws. Attach the sealing plate with 1 screw.
  • Page 74 V6R VRF 50/60Hz (3) Create a gap between the wall, screw in the temporary screws (M5, field supply), and hang the MS box. (4) After checking with a level that the MS box is horizontal, fix the unit with 8 screws (M5, field supply). Figure 3-2.17: Step 1 for wall-mounted type replacing Figure 3-2.18: Step 2 for wall-mounted type replacing 2.3 Indoor Units...

  • Page 75: Outdoor Unit Ducting And Shielding

    V6R VRF 50/60Hz 3 Outdoor Unit Ducting and Shielding 3.1 Ducting Requirements Depending on the height of adjacent walls relative to the height of the units, ducting may be required to ensure proper air discharge. In the situation depicted in Figure 3-3.1, the vertical section of ducting should be at least H-h high. Figure 3-3.1: Adjacent wall higher than outdoor unit Duct >1000...
  • Page 76 V6R VRF 50/60Hz 3.3 Ducting for 8/10/12HP Units 3.3.1 Option A – Transverse ducting Figure 3-3.2: Transverse ducting for 8/10/12HP units (unit: mm) Table 3-3.1: Duct dimensions Table 3-3.2: External static pressure Dimensions (mm) ESP (Pa) Remarks A ≥ 300 Factory default B ≥...
  • Page 77 V6R VRF 50/60Hz Ducting for 14/16/18/20HP Units 3.3.3 Option A – Transverse ducting Figure 3-3.4: Transverse ducting for 14/16/18/20HP units (unit: mm)) Table 3-3.5: Duct dimensions Table 3-3.6: External static pressure Dimensions (mm) ESP (Pa) Remarks A ≥ 300 Factory default B ≥...
  • Page 78 V6R VRF 50/60Hz 3.4 Fan Performance The default external static pressure of outdoor units is zero. With the steel mesh cover removed the external static pressure is 0-20Pa. Figure 3-3.6: 8HP units fan performance Figure 3-3.7: 10HP units fan performance 80Pa 60Pa 40Pa...
  • Page 79 V6R VRF 50/60Hz Figure 3-3.10: 16HP units fan performance Figure 3-3.11: 18/20HP units fan performance 80Pa 80Pa 60Pa 60Pa 40Pa 40Pa 20Pa 20Pa 15800(rated) 14900(rated) 13500 14500 15500 16500 14000 15000 16000 17000 Air flow（m Air flow（m  Notes for installers ...

  • Page 80: Refrigerant Piping Design

    V6R VRF 50/60Hz 4 Refrigerant Piping Design 4.1 Design Considerations Refrigerant piping design should take account of the following considerations:  The amount of brazing required should be kept to a minimum.  On the two inside sides of the first indoor branch joint (“A” in Figures 3-4.2, 3-4.3 and 3-4.4) the system should, as far as possible, be equal in terms of number of units, total capacities and total piping lengths.
  • Page 81 V6R VRF 50/60Hz 4.3 Permitted Piping Lengths and Level Differences 4.3.1 Connection with only VRF indoor units The piping length and level difference requirements that apply are summarized in Table 3-4.3 and are fully described as follows (refer to Figure 3-4.2): 1.
  • Page 82 V6R VRF 50/60Hz Figure 3-4.2: Permitted refrigerant piping lengths and level differences Legend g1, g2, g3, G1 Outdoor unit connection pipe L, M Outdoor unit branch joint Main pipe L2 to L9 Indoor unit main pipe A to D Branch joint between main pipe and MS I, II Branch joint between MS and indoor unit a to p...
  • Page 83 V6R VRF 50/60Hz 4.3.2 Connection with VRF indoor units and HT hydro module The piping length and level difference requirements that apply are summarized in Table 3-4.4 and are fully described as follows (refer to Figure 3-4.3): 1. Requirement 1: The total length of piping in each refrigerant system should not exceed 600m. When calculating the total length of piping, the actual length of the indoor main pipes (the piping between the first indoor branch joint and the MS box, L2 to L9) should be doubled.
  • Page 84 V6R VRF 50/60Hz Figure 3-4.3: Permitted refrigerant piping lengths and level differences Legend g1, g2, g3, G1 Main pipe L, M Outdoor unit connection pipe Outdoor unit branch joint L2 to L9 Main pipe A to E Indoor unit main pipe Branch joint between main pipe and MS or HT hydro module a to o Branch joint between MS and indoor unit...
  • Page 85 V6R VRF 50/60Hz 4.3.3 Connection with VRF indoor units and AHU kits The piping length and level difference requirements that apply are summarized in Table 3-4.5 and are fully described as follows (refer to Figure 3-4.4): 1. Requirement 1: The total length of piping in each refrigerant system should not exceed 1000m. When calculating the total length of piping, the actual length of the indoor main pipes (the piping between the first indoor branch joint and the MS box, L2 to L13) should be doubled.
  • Page 86 V6R VRF 50/60Hz Figure 3-4.4: Permitted refrigerant piping lengths and level differences Legend g1, g2, g3, G1 Outdoor unit connection pipe L, M Outdoor unit branch joint Main pipe L2 to L7 Indoor unit main pipe A to C Branch joint between main pipe and MS a to n Indoor unit auxiliary pipe N1 to N8, N10...
  • Page 87 V6R VRF 50/60Hz 4.4 Selecting Piping Diameters Tables 3-4.6 to 3-4.11 specify the required pipe diameters for the indoor and outdoor piping. Figure 3-4.5: Selecting piping diameters Legend g1, g2, g3, G1 Main pipe L, M Outdoor unit connection pipe Outdoor unit branch joint L2 to L9 Main pipe...
  • Page 88 V6R VRF 50/60Hz Table 3-4.7: Outdoor unit branch joint kits (L, M) Number of Branch joint kit outdoor units L: FQZHW-02SB1 L+M: FQZHW-03SB1 Table 3-4.8: Main pipe (L1) and first branch joint (A) Pipe Diameter (mm OD) Outdoor Unit Capacity (HP) Liquid pipe Low Pressure Gas Pipe...
  • Page 89 V6R VRF 50/60Hz Table 3-4.10: HT hydro module pipes (L9, n, o) and branch joint kits (only HT hydro module connected downstream) Pipe Diameter (mm OD) Total capacity of downstream Branch joint kit HT hydro module (× 100W) Liquid pipe Gas Pipe FQZHN-01SB1 ∅9.53...
  • Page 90 V6R VRF 50/60Hz 4.5 Mode Selection Box Selection and Piping MS should be selected according to Table 3-4.12. Table 3-4.12: MS box Model name MS01/N1-D MS04/N1-D MS06/N1-D MS08/N1-D MS10/N1-D MS12/N1-D Max. number of indoor unit groups Max. number of units per group Max.
  • Page 91 V6R VRF 50/60Hz Figure 3-4.10: Right ports merge example Figure 3-4.11: Wrong ports merge example 4.6 Selection Example The example below illustrates the piping selection procedure for a system consisting of three outdoor units (16HP + 14HP + 12HP) and 11 VRF indoor units and 2 HT hydro modules. The system's equivalent length of all liquid pipes is not in excess of 90m.
  • Page 92 V6R VRF 50/60Hz  Indoor units N9 to N10 are of capacity 16kW. Refer to Table 3-4.8. Indoor auxiliary pipes g and l are Φ15.9 / Φ9.53.  HT Hydro modules N12 to N13 are of capacity 14kW. Refer to Table 3-4.8. Indoor auxiliary pipes n and o are Φ15.9 / Φ9.53.
  • Page 93 V6R VRF 50/60Hz Table 3-4.14: Indoor branch joint dimensions (unit: mm) Model Low-pressure gas side joints High-pressure gas side joints Liquid side joints FQZHN- 01SB1 FQZHN- 02SB1 FQZHN- 03SB1 FQZHN- 04SB1 FQZHN- 05SB1 Table 3-4.15: Outdoor branch joint dimensions (unit: mm) Model Low-pressure gas side joints High-pressure gas side joints...
  • Page 94 V6R VRF 50/60Hz 4.8 Refrigerant Leakage Precautions R410A refrigerant is not flammable in air at temperatures up to 100°C at atmospheric pressure and is generally considered a safe substance to use in air conditioning systems. Nevertheless, precautions should be taken to avoid danger to life in the unlikely event of a major refrigerant leakage.

  • Page 95: Refrigerant Piping Installation

    V6R VRF 50/60Hz 5 Refrigerant Piping Installation 5.1 Procedure and Principles 5.1.1 Installation procedure  Notes for installers Installation of the refrigerant piping system should proceed in the following order: Pipe Pipe brazing Pipe Gastightness Joint Vacuum drying insulation and installation flushing test insulation...
  • Page 96 V6R VRF 50/60Hz 5.2 Storing Copper Piping 5.2.1 Pipe delivery, storage and sealing  Notes for installers  Ensure that piping does not get bent or deformed during delivery or whilst stored.  On construction sites store piping in a designated location. ...
  • Page 97 V6R VRF 50/60Hz 5.3.3 Expanding copper piping ends  Notes for installers  Ends of copper piping can be expanded so that another length of piping can be inserted and the joint brazed.  Insert the expanding head of the pipe expander into the pipe. After completing pipe expansion, rotate the copper pipe a few degrees to rectify the straight line mark left by the expanding head.
  • Page 98 V6R VRF 50/60Hz 5.3.5 Bending piping Bending copper piping reduces the number of brazed joints required and can improve quality and save material.  Notes for installers Piping bending methods  Hand bending is suitable for thin copper piping (Ф6. 35mm - Ф12. 7mm). ...
  • Page 99 V6R VRF 50/60Hz 5.5 Brazing Care must be taken to prevent oxide forming on the inside of copper piping during brazing. The presence of oxide in a refrigerant system adversely affects the operation of valves and compressors, potentially leading to low efficiency or even compressor failure.
  • Page 100 V6R VRF 50/60Hz … box continued from previous page Piping orientation during brazing Brazing should be conducted downwards or horizontally to avoid filler leakage. Figure 3-5.6: Piping orientation during brazing Piping overlap during brazing Table 3-5.3 specifies the minimum permissible piping overlap and the range of permissible gap sizes for brazed joints on piping of different diameters.
  • Page 101 V6R VRF 50/60Hz 5.6 Branch Joints  Notes for installers  Use U-shaped branch joints as specified on the Figure 3-5.8: Branch joint orientation construction drawings – do not replace U-shaped branch joints with tee joints.  To avoid accumulation of oil in the outdoor units, outdoor branch joints should be installed horizontally and must not be higher than the outdoor unit refrigerant outlets.
  • Page 102 V6R VRF 50/60Hz 5.7 Piping Connections between Outdoor Units The piping connecting the outdoor units should be horizontal and must not be higher than the refrigerant outlets. If necessary, to avoid obstacles the piping may be vertically offset below the outlets. When inserting a vertical offset to avoid an obstacle, the whole outdoor piping should be offset, rather than just the section adjacent to the obstacle.
  • Page 103 V6R VRF 50/60Hz 5.8.2 Procedure  Notes for installers Warning Only use nitrogen for flushing. Using carbon dioxide risks leaving condensation in the piping. Oxygen, air, refrigerant, flammable gases and toxic gases must not be used for flushing. Use of such gases may result in fire or explosion. Procedure 1.
  • Page 104 V6R VRF 50/60Hz … box continued from previous page  7. Flush the first opening: Using suitable material, such as a bag or cloth, press firmly against the opening at indoor unit A. When the pressure becomes too high to block with your hand, suddenly remove your hand allowing gas to rush out.
  • Page 105 V6R VRF 50/60Hz 5.9 Gastightness Test 5.9.1 Purpose To prevent faults caused by refrigerant leakage, a gastightness test should be performed before system commissioning. 5.9.2 Procedure  Notes for installers Warning Only dry nitrogen should be used for gastightness testing. Oxygen, air, flammable gases and toxic gases must not be used for gastightness testing.
  • Page 106 V6R VRF 50/60Hz 5.9.3 Leak detection  Notes for installers The general methods for identifying the source of a leak are as follows: 1. Audio detection: relatively large leaks are audible. 2. Touch detection: place your hand at joints to feel for escaping gas. 3.
  • Page 107 V6R VRF 50/60Hz 5.10.2 Procedure  Notes for installers During vacuum drying, a vacuum pump is used to lower the pressure in the piping to the extent that any moisture present evaporates. At 5mmHg (755mmHg below typical atmospheric pressure) the boiling point of water is 0°C. Therefore a vacuum pump capable of maintaining a pressure of -756mmHg or lower should be used.

  • Page 108: Drain Piping

    V6R VRF 50/60Hz 6 Drain Piping 6.1 Design Considerations Drain piping design should take account of the following considerations:  Indoor unit condensate drain piping needs to be of sufficient diameter to carry the volume of condensate produced at the indoor units and installed at a slope sufficient to allow drainage. Discharge as close as possible to the indoor units is usually preferable.
  • Page 109 V6R VRF 50/60Hz Figure 3-6.5: Drain piping air vents Vent  Air conditioner drain piping should be installed separately from waste, rainwater and other drain piping and should not come into direct contact with the ground.  Drain piping diameter should be not less than the indoor units’ drain piping connection. ...
  • Page 110 V6R VRF 50/60Hz Table 3-6.2: Vertical drain piping diameters Nominal PVC piping Capacity (L/h) Remarks diameter (mm) PVC25 Branch piping only PVC32 PVC40 PVC50 1440 PVC63 2760 Branch or main piping PVC75 5710 PVC90 8280 6.4 Drain Piping for Units with Lift Pumps Drain piping for units with lift pumps should take account of the following additional considerations: ...

  • Page 111: Insulation

    V6R VRF 50/60Hz 6.6 Watertightness Test and Water Flow Test Once installation of a drainage piping system is completed, watertightness and water flow tests should be performed.  Notes for installers Watertightness test  Fill the piping with water and test for leakages over a 24-hour period. Water flow test (natural drainage test) ...
  • Page 112 V6R VRF 50/60Hz 7.1.4 Installation of piping insulation With the exception of joint insulation, insulation should be applied to piping before fixing the piping in place. Insulation at joints in refrigerant piping should be applied after the gastightness test has been completed. ...

  • Page 113: Charging Refrigerant

    V6R VRF 50/60Hz 8 Charging Refrigerant 8.1 Calculating Additional Refrigerant Charge Based on the field installed refrigerant pipe and system layout, additional refrigerant charge may be required. Please add additional refrigerant according to the calculation below. Record the size of each liquid pipe from outdoor unit to indoor units.
  • Page 114 V6R VRF 50/60Hz 8.2 Adding Refrigerant  Notes for installers Caution  Charge refrigerant after performing a gastightness test and vacuum drying only.  Never charge more refrigerant than required as doing so can lead to liquid hammering.  Only use refrigerant R410A - charging with an unsuitable substance may cause explosions or accidents. ...

  • Page 115: Electrical Wiring

    V6R VRF 50/60Hz 9 Electrical Wiring 9.1 General  Notes for installers Caution  All installation and wiring must be carried out by competent and suitably qualified, certified and accredited professionals and in accordance with all applicable legislation.  Electrical systems should be grounded in accordance with all applicable legislation. ...
  • Page 116 V6R VRF 50/60Hz Figure 3-9.1: Overview of V6R system wiring Legend Three‐phase power supply (with earth wiring and leakage protection) Power distribution box Power supply terminal of outdoor unit Single phase power supply (with earth wiring and leakage protection) H1, H2 and E communication wire (with shielded layer) between outdoor unit and outdoor unit P,Q and E communication wire(with shielded layer) between outdoor unit and MS box...
  • Page 117 V6R VRF 50/60Hz 9.3 Communication Wiring Communication wiring design and installation should adhere to the following requirements:  Three‐core shielded cable should be used for communication wiring. The cross‐sectional area of each core of the communication wiring is not less than 0.75 mm2, and the length must not exceed 1200 m. Using other types of cable can lead to interference and malfunction.
  • Page 118 V6R VRF 50/60Hz  Example of communication wiring: Figure 3-9.6: Communication wiring example Outdoor unit P Q E (P Q E) Indoor Unit Indoor unit 1# (P Q E) Indoor Unit No.1 MS box Indoor unit 2# (P Q E) Indoor unit 3# (P Q E) Indoor Unit...
  • Page 119 V6R VRF 50/60Hz  Refrigerant leakage sensor connection and settings for MS01  Shut off power before connect the refrigerant leakage sensor to the corresponding port on the MS main board.  Max. 5 refrigerant leakage sensors can be connected to one MS01, and the connection port number of refrigerant sensor is CN3 ~ CN7 on the main board.

  • Page 120: Installation In Areas Of High Salinity

    V6R VRF 50/60Hz 10 Installation in Areas of High Salinity 10.1 Caution Do not install outdoor units where they could be directly exposed to sea air. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance. Outdoor units installed in seaside locations should be placed such as to avoid direct exposure to the sea air and additional anticorrosion treatment options should be selected, otherwise the service life of the outdoor units will be seriously affected.

  • Page 121: Commissioning

    V6R VRF 50/60Hz 11 Commissioning 11.1 Outdoor Unit Address and Capacity Settings Make sure all the settings you need to configure are completed. Refer to part 4 “Field settings” in “V6R VRF Service Manual”. Before running a system for the first time, set each outdoor unit’s address on switch ENC1 on each outdoor unit’s data transfer module.
  • Page 122 Once all the pre-commissioning checks in Part 3, 11.4 “Pre-commissioning Checks” have been completed, a test run should be performed as described below and a V6R Series System Commissioning Report (see Part 3, 12 “Appendix to Part 3 – System Commissioning Report”) should be completed as a record of the operating status of the system during commissioning.
  • Page 123 V6R VRF 50/60Hz Run 50% of the indoor units in cooling mode: temperature 17°C; fan speed high. Run 50% of the indoor units in heating mode: temperature 30°C; fan speed high. After one hour, complete Sheet C of the system commissioning report then: Check the system parameters using system check button on each outdoor unit’s data transfer module and complete the mixed mode columns of one Sheet E and one Sheet F of the system commissioning report for each outdoor unit.

  • Page 124: Appendix To Part 3 - System Commissioning Report

    V6R VRF 50/60Hz 12 Appendix to Part 3 – System Commissioning Report A total of up to 7 report sheets should be completed for each system:  One Sheet A, one Sheet B and one Sheet C per system.  One Sheet D and one Sheet E per outdoor unit. ...
  • Page 125 V6R VRF 50/60Hz V6R Series System Commissioning Report – Sheet A SYSTEM INFORMATION Project name and location Customer company System name Installation company Commissioning date Agent company Commissioning Outdoor ambient temp. engineer Power supply (V) OUTDOOR UNIT INFORMATION Master unit...
  • Page 126 V6R VRF 50/60Hz V6R Series System Commissioning Report – Sheet B Project name and location System name OUTDOOR UNITS Master unit Slave unit 1 Slave unit 2 Slave unit 3 Compressor suction pipe temperature System pressure at check port Phase currents (A)
  • Page 127 V6R VRF 50/60Hz V6R Series System Commissioning Report – Sheet C Project name and location System name RECORD OF ISSUES SEEN DURING COMMISSIONING Serial no. of Description of observed issue Suspected cause Troubleshooting undertaken relevant unit OUTDOOR UNIT FINAL CHECKLIST...
  • Page 128 V6R VRF 50/60Hz V6R Series System Commissioning Report – Sheet D Project name and location System name Observed values DSP1 Cooling Heating Parameters displayed on DSP2 Remarks content mode mode 0.-- Unit address Master unit: 0; slave units: 1, 2 1.--...
  • Page 129 V6R VRF 50/60Hz V6R Series System Commissioning Report – Sheet E Project name and location System name … table continued from previous page Observed values DSP1 Cooling Heating Parameters displayed on DSP2 Remarks content mode mode 34.-- Static pressure mode 0: 0 Pa;...
  • Page 130 V6R VRF 50/60Hz V6R Series System Commissioning Report – Sheet G Project name and location System name Observed values Cooling Heating Parameters displayed on DSP1 Remarks mode mode Operation IDU quantity Actual value 0-OFF; 2-Cooling Only; 3-Heating Only; 5-Main Cooling System operation mode Mode;...
  • Page 131 Ver. 2020-04 Commercial Air Conditioner Division Midea Group Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China Postal code: 528311 cac.midea.com / global.midea.com Note: Product specifications change from time to time as product improvements and developments are released and may vary from those in this...

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