Midea VC Pro Series Engineering Data
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Midea VC Pro Series Engineering Data

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Engineering Data
MVC-224WV2GN1
MVC-280WV2GN1
MVC-335WV2GN1
MVC-400WV2GN1
MVC-450WV2GN1
MVC-500WV2GN1
Series VRF
MVC-560WV2GN1
MVC-615WV2GN1
MVC-670WV2GN1
MVC-730WV2GN1
MVC-785WV2GN1
MVC-850WV2GN1
R410A
Commercial Air Conditioners

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  • Page 1 R410A Commercial Air Conditioners Engineering Data Series VRF MVC-224WV2GN1 MVC-560WV2GN1 MVC-615WV2GN1 MVC-280WV2GN1 MVC-670WV2GN1 MVC-335WV2GN1 MVC-730WV2GN1 MVC-400WV2GN1 MVC-785WV2GN1 MVC-450WV2GN1 MVC-850WV2GN1 MVC-500WV2GN1...
  • Page 2 VC Pro VRF 50/60Hz CONTENTS Part 1 General Information ................3 Part 2 Outdoor Unit Engineering Data ............19 Part 3 System Design and Installation ............141...
  • Page 3 VC Pro VRF 50/60Hz...

  • Page 4: Table Of Contents

    VC Pro VRF 50/60Hz Part 1 General Information Indoor and Outdoor Unit Capacities ............4 External Appearance................6 Outdoor Unit Combinations ..............8 Nomenclature ..................10 Combination Ratio ................11 Selection Procedure ................13...

  • Page 5: Indoor And Outdoor Unit Capacities

    VC Pro VRF 50/60Hz 1 Indoor and Outdoor Unit Capacities 1.1 Indoor Units 1.1.1 Standard indoor units Table 1-1.1: Standard indoor unit abbreviation codes Abbreviation Abbreviation Type Type code code One-way Cassette High Static Pressure Duct Two-way Cassette Wall-mounted Compact Four-way Cassette Ceiling &...
  • Page 6 VC Pro VRF 50/60Hz 1.3 Outdoor Units Table 1-1.5: Outdoor unit capacity range Capacity Model Name Combination Type MVC-224WV2GN1 MVC-280WV2GN1 10HP MVC-335WV2GN1 12HP MVC-400WV2GN1 14HP MVC-450WV2GN1 16HP MVC-500WV2GN1 18HP MVC-560WV2GN1 20HP MVC-615WV2GN1 22HP MVC-670WV2GN1 24HP MVC-730WV2GN1 26HP MVC-785WV2GN1 28HP MVC-850WV2GN1 30HP MVC-900WV2GN1 32HP...

  • Page 7: External Appearance

    VC Pro VRF 50/60Hz 2 External Appearance 2.1 Indoor Units 2.1.1 Standard indoor unit Table 1-2.1: Standard 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 VC Pro VRF 50/60Hz 2.3 Outdoor Units 2.3.1 Single units Table 1-2.4: Single outdoor unit appearance 8/10/12/14/16HP 18/20/22HP 24/26/28/30 (with single fan) (with dual fans) (with dual fans) 2.3.2 Combinations of units Table 1-2.5: Combination outdoor unit appearance 32HP 34/36/38/HP 40/42/44/46HP 48/50/52HP 54/56/58/60HP...

  • Page 9: Outdoor Unit Combinations

    VC Pro VRF 50/60Hz Table 1-2.5: Combination outdoor unit appearance 78/80/82HP 84/86/88/90HP 3 Outdoor Unit Combinations Table 1-3.1: Outdoor unit combinations System capacity Number Modules Outdoor branch of units joint kit 22.4 ● 28.0 ● 33.5 ● 40.0 ● 45.0 ●...
  • Page 10 VC Pro VRF 50/60Hz Table 1-3.1: Outdoor unit combinations Number Outdoor branch System capacity Modules of units joint kit 242.0 ●● ● 248.5 ● ●● FQZHW-03N1E 255.0 ●●● Notes: The combinations of units shown in the table are factory-recommended. Other combinations of units are also possible. For systems with two or more outdoor units, outdoor branch joints (sold separately) are required.

  • Page 11: 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 12: Combination Ratio

    ○ 1 Legend Code Remarks Midea VC Pro series outdoor units Capacity index (the capacity in kW multiplied by 10) Unit category (W: VRF outdoor unit) Type (V2: All DC inverter) Power supply (G: 3 phase, 380-415V, 50/60Hz) Refrigerant type (N1: R410A)
  • Page 13 VC Pro VRF 50/60Hz Table 1-5.2: Combinations of Indoor and outdoor units Outdoor unit capacity Sum of capacity indexes of connected indoor units Sum of capacity indexes of connected Maximum number of connected (fresh air processing units indoor units (standard indoor units Capacity indoor units and standard indoor units...

  • Page 14: Selection Procedure

    VC Pro 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:...
  • Page 15 VC Pro VRF 50/60Hz 6.2 Example The following is a selection example based on total heat load for cooling. Figure 1-6.1: Room plan Room H Room G Room A Room F Room B Room E Room C Room D Step 1: Establish design conditions ...
  • Page 16 VC Pro VRF 50/60Hz Table 1-6.2: Extract from medium static pressure duct (T2) cooling capacity table Indoor air temperature 14°C WB 16°C WB 18°C WB 19°C WB 20°C WB 22°C WB 24°C WB Capacity Model index 20°C DB 23°C DB 26°C DB 27°C DB 28°C DB...
  • Page 17 VC Pro VRF 50/60Hz Table 1-6.5: Extract from Table 1-5.2 Combinations of Indoor and outdoor units Sum of capacity indexes of Maximum number of Outdoor unit capacity connected indoor units (standard connected indoor Capacity indoor units only) units index 50.0 250 to 650 56.0 280 to 728...
  • Page 18 VC Pro VRF 50/60Hz Find the correction factor for piping length and level difference (“K1”) Figure 1-6.3: VC rate of change in cooling capacity K1 = 0.898 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 -100 -110 Notes:...
  • Page 19 VC Pro VRF 50/60Hz...
  • Page 20 VC Pro VRF 50/60Hz Part 2 Outdoor Unit Engineering Data Specifications ..................20 Dimensions ..................30 Installation Space Requirements ............40 Piping Diagrams ................... 41 Wiring Diagrams .................. 45 Electrical Characteristics ..............47 Functional Components and Safety Devices ......... 50 Capacity Tables ..................

  • Page 21: Specifications

    VC Pro VRF 50/60Hz 1 Specifications 8-12HP Table 2-1.1: 8-12HP specifications Model name MVC-224WV2GN1 MVC-280WV2GN1 MVC-335WV2GN1 Power supply V/Ph/Hz 380-415V 3N~50/60HZ 22.4 28.0 33.5 Capacity kBtu/h 76.5 95.6 114.4 Cooling Power input 5.17 6.81 9.13 4.33 4.11 3.67 Connected Total capacity 50-130% indoor unit Maximum quantity...
  • Page 22 VC Pro VRF 50/60Hz 14-20HP Table 2-1.2: 14-20HP specifications Model name MVC-400WV2GN1 MVC-450WV2GN1 MVC-500WV2GN1 MVC-560WV2GN1 Power supply V/Ph/Hz 380-415V 3N~50/60HZ 40.0 45.0 50.0 56.0 Capacity kBtu/h 136.6 153.7 170.8 191.3 Cooling Power input 10.58 12.26 14.88 17.66 3.78 3.67 3.36 3.17 Connected Total capacity...
  • Page 23 VC Pro VRF 50/60Hz 22-26HP Table 2-1.3: 22-26HP specifications Model name MVC-615WV2GN1 MVC-670WV2GN1 MVC-730WV2GN1 Power supply V/Ph/Hz 380-415V 3N~50/60HZ 61.5 67.0 73.0 Capacity kBtu/h 210.0 228.8 249.3 Cooling Power input 20.23 20.68 23.40 3.04 3.24 3.12 Connected Total capacity 50-130% indoor unit Maximum quantity Type...
  • Page 24 VC Pro VRF 50/60Hz 28-30HP Table 2-1.4: 28-30HP specifications Model name MVC-785WV2GN1 MVC-850WV2GN1 Power supply V/Ph/Hz 380-415V 3N~50/60HZ 78.5 85.0 Capacity kBtu/h 268.1 290.3 Cooling Power input 26.08 29.51 3.01 2.88 Connected Total capacity 50-130% indoor unit Maximum quantity Type DC inverter Quantity Compressor...
  • Page 25 VC Pro VRF 50/60Hz 32-38HP Table 2-1.5: 32-38HP specifications Model name MVC-900WV2GN1 MVC-950WV2GN1 MVC-1010WV2GN1 MVC-1065WV2GN1 Combination type 16HP+16HP 22HP+12HP 20HP+16HP 22HP+16HP Power supply V/Ph/Hz 380-415V 3N~50/60HZ 90.0 95.0 101.0 106.5 Capacity kBtu/h 307.4 324.4 345.0 363.7 Cooling Power input 24.52 29.36 29.71 32.49...
  • Page 26 VC Pro VRF 50/60Hz 40-44HP Table 2-1.6: 40-44HP specifications Model name MVC-1120WV2GN1 MVC-1180WV2GN1 MVC-1235WV2GN1 Combination type 24HP+16HP 26HP+16HP 28HP+16HP Power supply V/Ph/Hz 380-415V 3N~50/60HZ 112.0 118.0 123.5 Capacity kBtu/h 382.5 403.0 421.8 Cooling Power input 32.94 35.66 38.34 3.40 3.31 3.22 Connected Total capacity...
  • Page 27 VC Pro VRF 50/60Hz 46-52HP Table 2-1.7: 46-52HP specifications Model name MVC-1300WV2GN1 MVC- MVC-1400WV2GN1 MVC-1465WV2GN1 Combination type 30HP+16HP 26HP+22HP 28HP+22HP 30HP+22HP 1345WV2GN1 Power supply V/Ph/Hz 380-415V 3N~50/60HZ 130.0 134.5 140.0 146.5 Capacity kBtu/h 444.0 459.3 478.1 500.3 Cooling Power input 41.77 43.63 46.31...
  • Page 28 VC Pro VRF 50/60Hz 54-58HP Table 2-1.8: 54-58HP specifications Model name MVC-1515WV2GN1 MVC-1570WV2GN1 MVC-1635WV2GN1 Combination type 28HP+26HP 28HP+28HP 30HP+28HP Power supply V/Ph/Hz 380-415V 3N~50/60HZ 151.5 157.0 163.5 Capacity kBtu/h 517.4 536.2 558.4 Cooling Power input 49.48 52.16 55.59 3.06 3.01 2.94 Connected Total capacity...
  • Page 29 VC Pro VRF 50/60Hz 60-66HP Table 2-1.9: 60-66HP specifications Model name MVC-1700WV2GN1 MVC-1750WV2GN1 MVC-1795WV2GN1 MVC-1850WV2GN1 Combination type 30HP+30HP 30HP+16HP+16HP 26HP+22HP+16HP 28HP+22HP+16HP Power supply V/Ph/Hz 380-415V 3N~50/60HZ 170.0 175.0 179.5 185.0 Capacity kBtu/h 580.6 597.8 613.0 631.8 Cooling Power input 59.02 54.03 55.89 58.57...
  • Page 30 VC Pro VRF 50/60Hz 68-74HP Table 2-1.10: 68-74HP specifications Model name MVC-1915WV2GN1 MVC-1965WV2GN1 MVC-2020WV2GN1 MVC-2085WV2GN1 Combination type 30HP+22HP+16HP 28HP+26HP+16HP 28HP+28HP+16HP 30HP+28HP+16HP Power supply V/Ph/Hz 380-415V 3N~50/60HZ 191.5 196.5 202.0 208.5 Capacity kBtu/h 654.1 671.1 689.9 712.2 Cooling Power input 62.00 61.74 64.42 67.85...
  • Page 31 VC Pro VRF 50/60Hz 76-82HP Table 2-1.11: 76-82HP specifications Model name MVC-2150WV2GN1 MVC-2185WV2GN1 MVC-2250WV2GN1 MVC-2315WV2GN1 Combination type 30HP+30HP+16HP 28HP+28HP+22HP 30HP+28HP+22HP 30HP+30HP+22HP Power supply V/Ph/Hz 380-415V 3N~50/60HZ 215.0 218.5 225.0 231.5 Capacity kBtu/h 734.4 746.2 768.4 790.6 Cooling Power input 71.28 72.39 75.82 79.25...
  • Page 32 VC Pro VRF 50/60Hz 84-90HP Table 2-1.12: 84-90HP specifications Model name MVC-2355WV2GN1 MVC-2420WV2GN1 MVC-2485WV2GN1 MVC-2550WV2GN1 Combination type 28HP+28HP+28HP 30HP+28HP+28HP 30HP+30HP+28HP 30HP+30HP+30HP Power supply V/Ph/Hz 380-415V 3N~50/60HZ 235.5 242.0 248.5 255.0 Capacity kBtu/h 804.3 826.5 848.7 870.9 Cooling Power input 78.24 81.67 85.10 88.53...

  • Page 33: Dimensions

    VC Pro VRF 50/60Hz 2 Dimensions 2.1 Single Units 8/10/12/14/16HP Figure 2-2.1: 8/10/12/14/16HP dimensions (unit: mm) Check port (used to measure system pressure, charge refrigerant and vacuumize) Liquid pipe connection port (ΦA) Gas pipe connection port (ΦB) Table 2-2.1: 8/10/12/14/16HP connection piping diameter (unit: mm) Size 8-10HP 12HP...
  • Page 34 VC Pro VRF 50/60Hz 18/20/22HP Figure 2-2.2: 18/20/22HP dimensions (unit: mm) Check port (used to measure system pressure, charge refrigerant and vacuumize) Liquid pipe connection port (ΦA) 1250 Gas pipe connection port (ΦB) Detail R Table 2-2.2: 18/20/22HP connection piping diameter (unit: mm) Size 18-22HP Φ19.1...
  • Page 35 VC Pro VRF 50/60Hz 24/26/28/30HP Figure 2-2.3: 24/26/28/30HP dimensions (unit: mm) Check port (used to measure system pressure, charge refrigerant and vacuumize) Liquid pipe connection port (ΦA) Gas pipe connection port (ΦB) 1585 Detail R Table 2-2.3: 24/26/28/30HP connection piping diameter (unit: mm) Size 24HP 26HP...
  • Page 36 VC Pro VRF 50/60Hz 2.2 Combinations of Units 32HP Figure 2-2.4: 32HP dimensions (unit: mm) Outdoor unit 1 Outdoor unit 2 200-500 34/36/38HP Figure 2-2.5: 34/36/38HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 1 200-500 1250...
  • Page 37 VC Pro VRF 50/60Hz 40/42/44/46HP Figure 2-2.6: 40/42/44/46HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 1 200-500 1585 48/50/52HP Figure 2-2.7: 48/50/52HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 1 200-500 1250 1585...
  • Page 38 VC Pro VRF 50/60Hz 54/56/58/60HP Figure 2-2.8: 54/56/58/60HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 1 200-500 1585 1585 62HP Figure 2-2.9: 62HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 3 Outdoor unit 1 200-500 200-500 1585...
  • Page 39 VC Pro VRF 50/60Hz 64/66/68HP Figure 2-2.10: 64/66/68HP dimensions (unit: mm) Outdoor unit 1 Outdoor unit 2 Outdoor unit 3 200-500 200-500 1250 1585 70/72/74/76HP Figure 2-2.11: 70/72/74/76HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 1 Outdoor unit 3 200-500 200-500 1585...
  • Page 40 VC Pro VRF 50/60Hz 78/80/82HP Figure 2-2.12: 78/80/82HP dimensions (unit: mm) Outdoor unit 2 Outdoor unit 3 Outdoor unit 1 200-500 200-500 1250 1585 1585 84/86/88/90HP Figure 2-2.13: 84/86/88/90HP dimensions (unit: mm) Outdoor unit 3 Outdoor unit 2 Outdoor unit 2 Outdoor unit 2 Outdoor unit 1 200-500...

  • Page 41: Installation Space Requirements

    VC Pro VRF 50/60Hz 3 Installation Space Requirements For single unit installation For single row installation Figure 2-3.1: Single unit installation (unit: mm) Figure 2-3.2: Single row installation (unit: mm) >1000 >1000 >1m >1000 Front Front Front >1000 200-500mm For multi-row installation Figure 2-3.3: Multi-row installation (unit: mm) >1m Front...

  • Page 42: Piping Diagrams

    VC Pro VRF 50/60Hz 4 Piping Diagrams 8-16HP Figure 2-4.1: 8-16HP piping diagram EXVA ° C ° C Legend Parts name Parts name Compressor Stop valve (gas side) Discharge temperature sensor Accumulator High pressure sensor Low pressure switch Oil separator Solenoid valve Heat exchanger Heat exchanger temperature sensor...
  • Page 43 VC Pro VRF 50/60Hz 18-22HP Figure 2-4.2: 18-22HP piping diagram EXVA ° C ° C Legend Parts name Parts name Compressor Stop valve (gas side) Discharge temperature sensor Accumulator High pressure sensor Low pressure switch Oil separator Solenoid valve Heat exchanger Heat exchanger temperature sensor Electronic expansion valve (EXV) Outdoor ambient temperature sensor...
  • Page 44 VC Pro VRF 50/60Hz 24-30HP Figure 2-4.3: 24-30HP piping diagram EXVA ° C ° C Legend Parts name Parts name Compressor Stop valve (gas side) Discharge temperature sensor Accumulator High pressure sensor Low pressure switch Oil separator Solenoid valve Heat exchanger Heat exchanger temperature sensor Electronic expansion valve (EXV) Outdoor ambient temperature sensor...
  • Page 45 VC Pro 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. Accumulator: Stores liquid refrigerant to protect compressor from liquid hammering. 3.

  • Page 46: Wiring Diagrams

    VC Pro VRF 50/60Hz 5 Wiring Diagrams 8-16HP Figure 2-5.1: 8-16HP wiring diagram...
  • Page 47 VC Pro VRF 50/60Hz 18-30HP Figure 2-5.2: 18-30HP wiring diagram...

  • Page 48: Electrical Characteristics

    VC Pro VRF 50/60Hz 6 Electrical Characteristics Table 2-6.1: Outdoor unit electrical characteristics Model Power Supply Compressor Min. Max. Capacity Modules Volts volts volts TOCA 50/60 380~415 29.4 0.56 10HP 50/60 380~415 24.5 29.4 11.1 0.56 12HP 50/60 380~415 24.7 29.4 14.8 0.56...

  • Page 49: Functional Components And Safety Devices

    VC Pro VRF 50/60Hz 7 Functional Components and Safety Devices Table 2-7.1: 8-30HP functional components and safety devices Item 8-30HP Compressor top and discharge pipe Compressor 90°C = 5kΩ ± 3% temperature sensors Inverter module Inverter module temperature sensor 90°C = 5kΩ ± 5% 115°C Fan motor Limit temperature...

  • Page 50: Capacity Tables

    VC Pro VRF 50/60Hz 8 Capacity Tables 8.1 Cooling Capacity Tables Table 2-8.1: 8HP cooling capacity Combination Outdoor Indoor temperature(°C DB/WB) temperatu DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 (Capacity re (°C index) 19.68 2.11 23.44 2.58 27.20 2.77 28.24 2.88 29.60 2.96...
  • Page 51 VC Pro VRF 50/60Hz Table 2-8.1: 8HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:24 n (%) temperatu (Capacity re (°C index) 16.66 1.78 19.86 2.22 23.06 2.65 24.67 2.84 26.27 3.06 28.27 3.18 28.91 3.28...
  • Page 52 VC Pro VRF 50/60Hz Table 2-8.1: 8HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 13.60 1.44 16.24 1.72 18.88 2.03 20.16 2.22 21.44 2.36 24.08 2.71 26.72 3.11 13.60 1.45...
  • Page 53 VC Pro VRF 50/60Hz Table 2-8.1: 8HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 10.56 1.13 12.64 1.32 14.64 1.50 15.68 1.61 16.72 1.72 18.72 1.96 20.80 2.26 10.56 1.14...
  • Page 54 VC Pro VRF 50/60Hz Table 2-8.1: 8HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 7.56 0.84 9.04 0.97 10.48 1.11 11.20 1.16 11.92 1.23 13.36 1.40 14.88 1.50 7.56 0.84...
  • Page 55 VC Pro VRF 50/60Hz Table 2-8.2: 10HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:30.7,WB:2 DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:32,WB:24 n (%) tempera (Capacity ture (°C index) 24.60 2.78 29.30 3.40 34.00 3.64 35.30 3.79 37.00 3.90 37.90 4.24 38.85 4.27 24.60...
  • Page 56 VC Pro VRF 50/60Hz Table 2-8.2: 10HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:20.8,WB:14 DB:23.3,WB:16 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 20.80 2.35 24.80 2.92 28.80 3.49 30.80 3.74 32.80 4.03 35.30 4.18 36.10...
  • Page 57 VC Pro VRF 50/60Hz Table 2-8.2: 10HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 17.00 1.89 20.30 2.27 23.60 2.68 25.20 2.92 26.80 3.11 30.10 3.57 33.40 4.09 17.00 1.91...
  • Page 58 VC Pro VRF 50/60Hz Table 2-8.2: 10HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 13.20 1.49 15.80 1.74 18.30 1.98 19.60 2.12 20.90 2.26 23.40 2.59 26.00 2.97 13.20 1.50...
  • Page 59 VC Pro VRF 50/60Hz Table 2-8.2: 10HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 9.45 1.10 11.30 1.27 13.10 1.46 14.00 1.53 14.90 1.62 16.70 1.84 18.60 1.98 9.45 1.11...
  • Page 60 VC Pro VRF 50/60Hz Table 2-8.3: 12HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 n (%) temperatu (Capacity re (°C index) 29.32 3.73 34.92 4.55 40.52 4.88 42.07 5.08 44.10 5.22 45.17 5.68 46.31 5.72 29.32...
  • Page 61 VC Pro VRF 50/60Hz Table 2-8.3: 12HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 24.84 3.15 29.62 3.92 34.39 4.67 36.7 5.02 39.16 5.40 42.15 5.61 43.11...
  • Page 62 VC Pro VRF 50/60Hz Table 2-8.3: 12HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 20.34 2.54 24.29 3.04 28.24 3.59 30.15 3.92 32.06 4.17 36.01 4.79 39.9...
  • Page 63 VC Pro VRF 50/60Hz Table 2-8.3: 12HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 n (%) DB:32,WB:24 temperatur (Capacity e (°C DB) index) 15.79 1.99 18.90 2.34 21.90 2.65 23.45 2.84 25.00 3.03 28.00 3.47 31.1...
  • Page 64 VC Pro VRF 50/60Hz Table 2-8.3: 12HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 11.31 1.48 13.52 1.71 15.67 1.96 16.75 2.06 17.83 2.17 19.98 2.47 22.25 2.66 11.31 1.49...
  • Page 65 VC Pro VRF 50/60Hz Table 2-8.4: 14HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 35.14 4.32 41.86 5.28 48.57 5.66 50.4 5.89 52.85 6.06 54.14 6.58 55.5 6.63...
  • Page 66 VC Pro VRF 50/60Hz Table 2-8.4: 14HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 29.71 3.65 35.43 4.54 41.14 5.42 44.0 5.82 46.86 6.26 50.43 6.50 51.5...
  • Page 67 VC Pro VRF 50/60Hz Table 2-8.4: 14HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 24.29 2.94 29.00 3.53 33.71 4.16 36.0 4.54 38.29 4.83 43.00 5.55 47.7...
  • Page 68 VC Pro VRF 50/60Hz Table 2-8.4: 14HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 18.86 2.31 22.57 2.71 26.14 3.07 28.00 3.29 29.86 3.51 33.43 4.02 37.1...
  • Page 69 VC Pro VRF 50/60Hz Table 2-8.4: 14HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 13.50 1.71 16.14 1.98 18.71 2.27 20.00 2.38 21.29 2.51 23.86 2.86 26.57 3.08 13.50 1.72...
  • Page 70 VC Pro VRF 50/60Hz Table 2-8.5: 16HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 39.39 5.01 46.91 6.12 54.43 6.56 56.5 6.82 59.23 7.02 60.68 7.63 62.2 7.68...
  • Page 71 VC Pro VRF 50/60Hz Table 2-8.5: 16HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 33.36 4.23 39.78 5.26 46.20 6.28 49.4 6.74 52.61 7.25 56.62 7.53 57.9...
  • Page 72 VC Pro VRF 50/60Hz Table 2-8.5: 16HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 27.32 3.40 32.63 4.09 37.93 4.82 40.5 5.26 43.07 5.59 48.37 6.43 53.6...
  • Page 73 VC Pro VRF 50/60Hz Table 2-8.5: 16HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:20.8,WB:14 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 21.22 2.68 25.39 3.14 29.41 3.56 31.50 3.81 33.59 4.07 37.61 4.66 41.78...
  • Page 74 VC Pro VRF 50/60Hz Table 2-8.5: 16HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 15.19 1.98 18.16 2.29 21.05 2.64 22.50 2.76 23.95 2.91 26.84 3.31 29.89 3.57 15.19 2.00...
  • Page 75 VC Pro VRF 50/60Hz Table 2-8.6: 18HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 43.93 6.08 52.32 7.42 60.71 7.96 63.03 8.28 66.06 8.52 67.68 9.26 69.38 9.32...
  • Page 76 VC Pro VRF 50/60Hz Table 2-8.6: 18HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 37.14 5.13 44.29 6.39 51.43 7.62 55.0 8.18 58.57 8.80 63.04 9.14 64.4...
  • Page 77 VC Pro VRF 50/60Hz Table 2-8.6: 18HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 30.36 4.13 36.25 4.96 42.14 5.85 45.00 6.38 47.86 6.79 53.75 7.81 59.64...
  • Page 78 VC Pro VRF 50/60Hz Table 2-8.6: 18HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 23.57 3.25 28.21 3.81 32.68 4.32 35.0 4.63 37.32 4.94 41.79 5.65 46.4...
  • Page 79 VC Pro VRF 50/60Hz Table 2-8.6: 18HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 16.88 2.41 20.18 2.78 23.39 3.20 25.00 3.35 26.61 3.53 29.82 4.02 33.22...
  • Page 80 VC Pro VRF 50/60Hz Table 2-8.7: 20HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 49.20 7.22 58.60 8.81 67.99 9.45 70.60 9.83 73.99 10.11 75.80 10.99 77.70 11.06...
  • Page 81 VC Pro VRF 50/60Hz Table 2-8.7: 20HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 41.60 6.09 49.60 7.58 57.60 9.04 61.60 9.71 65.60 10.45 70.60 10.85 72.20...
  • Page 82 VC Pro VRF 50/60Hz Table 2-8.7: 20HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 34.00 4.90 40.60 5.88 47.20 6.94 50.4 7.57 53.60 8.06 60.20 9.26 66.8...
  • Page 83 VC Pro VRF 50/60Hz Table 2-8.7: 20HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 26.40 3.86 31.60 4.52 36.60 5.13 39.2 5.50 41.80 5.87 46.80 6.71 52.0...
  • Page 84 VC Pro VRF 50/60Hz Table 2-8.7: 20HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 18.90 2.86 22.60 3.30 26.20 3.80 28.00 3.98 29.80 4.19 33.40 4.77 37.2...
  • Page 85 VC Pro VRF 50/60Hz Table 2-8.8: 22HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 53.83 8.27 64.11 10.09 74.39 10.82 77.2 11.2 80.95 11.58 82.93 12.59 85.0 12.6...
  • Page 86 VC Pro VRF 50/60Hz Table 2-8.8: 22HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 45.60 6.97 54.37 8.68 63.13 10.36 67.52 11.12 71.90 11.96 77.39 12.42 79.14 12.81 45.60 7.11...
  • Page 87 VC Pro VRF 50/60Hz Table 2-8.8: 22HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 37.34 5.62 44.59 6.74 51.84 7.95 55.35 8.68 58.86 9.23 66.11 10.61 73.36...
  • Page 88 VC Pro VRF 50/60Hz Table 2-8.8: 22HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 28.99 4.42 34.70 5.18 40.20 5.87 43.05 6.29 45.90 6.72 51.40 7.69 57.11...
  • Page 89 VC Pro VRF 50/60Hz Table 2-8.8: 22HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 20.76 3.27 24.82 3.79 28.77 4.35 30.75 4.55 32.73 4.80 36.68 5.46 40.85...
  • Page 90 VC Pro VRF 50/60Hz Table 2-8.9: 24HP cooling capacity Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 58.86 8.45 70.11 10.32 81.35 11.06 84.47 11.51 88.53 11.84 90.69 12.87 92.97 12.95...
  • Page 91 VC Pro VRF 50/60Hz Table 2-8.9: 24HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:19 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 49.77 7.13 59.35 8.88 68.92 10.59 73.70 11.37 78.48 12.23 84.47 12.70 86.39...
  • Page 92 VC Pro VRF 50/60Hz Table 2-8.9: 24HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 40.68 5.74 48.58 6.89 56.47 8.13 60.30 8.87 64.13 9.44 72.02 10.85 79.92 12.42 40.68 5.80...
  • Page 93 VC Pro VRF 50/60Hz Table 2-8.9: 24HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 31.59 4.52 37.81 5.30 43.79 6.00 46.9 6.43 50.01 6.87 55.99 7.86 62.2...
  • Page 94 VC Pro VRF 50/60Hz Table 2-8.9: 24HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 22.61 3.35 27.04 3.87 31.35 4.45 33.50 4.66 35.65 4.91 39.96 5.59 44.51 6.02 22.61 3.37...
  • Page 95 VC Pro VRF 50/60Hz Table 2-8.10: 26HP cooling capacity Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 64.13 9.56 76.39 11.67 88.64 12.52 92.03 13.02 96.45 13.39 98.81 14.56 101.29 14.66 64.13 9.56 76.39...
  • Page 96 VC Pro VRF 50/60Hz Table 2-8.10: 26HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 (%) (Capacity temperature index) (°C DB) 54.23 8.07 64.66 10.04 75.09 11.98 80.30 12.86 85.51 13.84 92.04 14.38 94.12 14.82 54.23...
  • Page 97 VC Pro VRF 50/60Hz Table 2-8.10: 26HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (°C (Capacity index) 44.32 6.50 52.93 7.80 61.53 9.20 65.70 10.04 69.87 10.68 78.47 12.28 87.08 14.06 44.32 6.56 52.93...
  • Page 98 VC Pro VRF 50/60Hz Table 2-8.10: 26HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 34.42 5.11 41.19 5.99 47.71 6.79 51.1 7.28 54.49 7.77 61.01 8.89 67.7...
  • Page 99 VC Pro VRF 50/60Hz Table 2-8.10: 26HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 24.64 3.79 29.46 4.38 34.15 5.03 36.50 5.27 38.85 5.56 43.54 6.32 48.49...
  • Page 100 VC Pro VRF 50/60Hz Table 2-8.11: 28HP cooling capacity Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 68.71 10.66 81.83 13.01 94.95 13.94 98.59 14.51 103.33 14.92 105.85 16.23 108.51 16.33 68.71 10.66 81.83...
  • Page 101 VC Pro VRF 50/60Hz Table 2-8.11: 28HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 Outdoor n (%) DB:20.8,WB:14 DB:27,WB:19 DB:32,WB:24 temperatur (Capacity e (°C DB) index) 58.20 8.99 69.4 11.1 80.5 13.3 86.1 14.3 91.7 15.4 98.7 16.0 101.0...
  • Page 102 VC Pro VRF 50/60Hz Table 2-8.11: 28HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 47.66 7.24 56.92 8.69 66.16 10.25 70.6 11.1 75.14 11.90 84.38 13.68 93.6...
  • Page 103 VC Pro VRF 50/60Hz Table 2-8.11: 28HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 37.01 5.70 44.30 6.68 51.31 7.57 54.95 8.12 58.59 8.66 65.60 9.91 72.89...
  • Page 104 VC Pro VRF 50/60Hz Table 2-8.11: 28HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 26.49 4.22 31.68 4.88 36.73 5.61 39.25 5.87 41.77 6.19 46.82 7.04 52.15...
  • Page 105 VC Pro VRF 50/60Hz Table 2-8.12: 30HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinati Outdoor DB:23.3,WB:1 on (%) temperatu DB:20.8,WB:14 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 (Capacity re (°C index) 74.39 12.06 88.6 14.7 102.8 15.7 106.7 16.4 111.8 16.8 114.6 18.3 117.5 18.48...
  • Page 106 VC Pro VRF 50/60Hz Table 2-8.12: 30HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 63.02 10.17 75.14 12.66 87.26 15.11 93.32 16.22 99.37 17.45 106.95 18.12 109.38 18.68 63.02 10.37...
  • Page 107 VC Pro VRF 50/60Hz Table 2-8.12: 30HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 51.61 8.19 61.63 9.83 71.64 11.60 76.50 12.66 81.36 13.46 91.37 15.48 101.39 17.73 51.61 8.27...
  • Page 108 VC Pro VRF 50/60Hz Table 2-8.12: 30HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (°C DB) index) 40.07 6.45 47.96 7.56 55.56 8.56 59.50 9.18 63.44 9.80 71.04 11.21 78.93 12.89 40.07 6.50...
  • Page 109 VC Pro VRF 50/60Hz Table 2-8.12: 30HP cooling capacity (continued) Indoor temperature(°C DB/WB) Combinatio Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 n (%) temperatur (Capacity e (°C DB) index) 28.69 4.78 34.30 5.52 39.77 6.34 42.5 6.64 45.23 7.01 50.70 7.97 56.4...
  • Page 110 VC Pro VRF 50/60Hz 8.2 Capacity Correction Factors for Piping Length and Level Difference Figure 2-8.1: Rate of change in cooling capacity 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 -100 -110 Notes:...
  • Page 111 VC Pro VRF 50/60Hz 8.3 Cooling Part Load Performance at 100% Combination Ratio Table 2-8.13: 8HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 15.12 1.62 18.00 1.95 20.96 2.33 22.40 2.49...
  • Page 112 VC Pro VRF 50/60Hz Table 2-8.13: 8HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor Part DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (°C load 7.61 0.65 9.09 0.75 10.57 0.88 11.31 0.93 12.05 1.01 13.53 1.13 15.02 1.30 7.61 0.65...
  • Page 113 VC Pro VRF 50/60Hz Table 2-8.14: 10HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor Part DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (°C load 18.90 2.14 22.50 2.57 26.20 3.06 28.00 3.28 29.80 3.56 33.50 4.06 35.40 4.24 18.90 2.16 22.50...
  • Page 114 VC Pro VRF 50/60Hz Table 2-8.14: 10HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 9.51 0.85 11.36 0.99 13.21 1.15 14.14 1.23 15.07 1.33 16.92 1.49 18.77 1.71 9.51 0.86...
  • Page 115 VC Pro VRF 50/60Hz Table 2-8.15: 12HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 22.61 2.87 26.92 3.45 31.35 4.11 33.50 4.40 35.65 4.77 40.08 5.44 42.35 5.68 22.61 2.90 26.92...
  • Page 116 VC Pro VRF 50/60Hz Table 2-8.15: 12HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 11.38 1.15 13.59 1.33 15.81 1.55 16.92 1.65 18.03 1.78 20.24 2.00 22.46 2.29 11.38 1.15...
  • Page 117 VC Pro VRF 50/60Hz Table 2-8.16: 14HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 27.00 3.32 32.14 4.00 37.43 4.76 40.00 5.10 42.57 5.53 47.86 6.31 50.57 6.58 27.00 3.36 32.14...
  • Page 118 VC Pro VRF 50/60Hz Table 2-8.16: 14HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 13.59 1.33 16.23 1.54 18.88 1.79 20.20 1.91 21.52 2.06 24.17 2.32 26.81 2.66 13.59 1.33...
  • Page 119 VC Pro VRF 50/60Hz Table 2-8.17: 16HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 30.38 3.85 36.16 4.63 42.11 5.52 45.00 5.91 47.89 6.41 53.84 7.31 56.89 7.63 30.38 3.90 36.16...
  • Page 120 VC Pro VRF 50/60Hz Table 2-8.17: 16HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 15.28 1.54 18.26 1.78 21.24 2.08 22.73 2.21 24.21 2.39 27.19 2.69 30.17 3.08 15.28 1.55...
  • Page 121 VC Pro VRF 50/60Hz Table 2-8.18: 18HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 33.75 4.67 40.18 5.62 46.79 6.70 50.00 7.17 53.22 7.78 59.82 8.87 63.22 9.26 33.75 4.73 40.18...
  • Page 122 VC Pro VRF 50/60Hz Table 2-8.18: 18HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 16.98 1.87 20.29 2.16 23.60 2.52 25.25 2.69 26.90 2.90 30.21 3.26 33.52 3.74 16.98 1.88...
  • Page 123 VC Pro VRF 50/60Hz Table 2-8.19: 20HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 37.80 5.55 45.00 6.68 52.40 7.95 56.00 8.51 59.60 9.24 67.00 10.53 70.80 10.98 37.80 5.61 45.00...
  • Page 124 VC Pro VRF 50/60Hz Table 2-8.19: 20HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 19.02 2.22 22.73 2.57 26.43 2.99 28.28 3.19 30.13 3.44 33.83 3.87 37.54 4.44 19.02 2.23...
  • Page 125 VC Pro VRF 50/60Hz Table 2-8.20: 22HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 41.51 6.35 49.42 7.65 57.55 9.10 61.50 9.75 65.45 10.58 73.58 12.06 77.75 12.58 41.51 6.43 49.42...
  • Page 126 VC Pro VRF 50/60Hz Table 2-8.20: 22HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 20.89 2.54 24.96 2.94 29.02 3.43 31.06 3.65 33.09 3.95 37.16 4.43 41.23 5.08 20.89 2.55...
  • Page 127 VC Pro VRF 50/60Hz Table 2-8.21: 24HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 45.23 6.49 53.84 7.82 62.69 9.31 67.00 9.97 71.31 10.82 80.16 12.33 84.71 12.86 45.23 6.57 53.84...
  • Page 128 VC Pro VRF 50/60Hz Table 2-8.21: 24HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 22.76 2.59 27.19 3.01 31.62 3.51 33.84 3.74 36.05 4.03 40.48 4.53 44.91 5.20 22.76 2.61 27.19...
  • Page 129 VC Pro VRF 50/60Hz Table 2-8.22: 26HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 49.28 7.35 58.66 8.85 68.31 10.53 73.00 11.28 77.69 12.24 87.34 13.95 92.29 14.55 49.28 7.44 58.66...
  • Page 130 VC Pro VRF 50/60Hz Table 2-8.22: 26HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 24.80 2.94 29.62 3.40 34.45 3.97 36.87 4.23 39.28 4.56 44.11 5.13 48.93 5.88 24.80 2.95...
  • Page 131 VC Pro VRF 50/60Hz Table 2-8.23: 28HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 52.99 8.19 63.08 9.86 73.45 11.74 78.50 12.57 83.55 13.64 93.92 15.54 99.25 16.22 52.99 8.29 63.08...
  • Page 132 VC Pro VRF 50/60Hz Table 2-8.23: 28HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 26.66 3.27 31.86 3.79 37.05 4.42 39.64 4.71 42.24 5.09 47.43 5.71 52.62 6.55 26.66 3.29...
  • Page 133 VC Pro VRF 50/60Hz Table 2-8.24: 30HP cooling part load performance Indoor temperature(°C DB/WB) Outdoor Part DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (°C load 57.38 9.27 68.31 11.15 79.53 13.28 85.00 14.22 90.47 15.43 101.69 17.59 107.47 18.36 57.38 9.38 68.31...
  • Page 134 VC Pro VRF 50/60Hz Table 2-8.24: 30HP cooling part load performance (continued) Indoor temperature(°C DB/WB) Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 Part temperature (°C load 28.87 3.70 34.49 4.29 40.11 5.00 42.93 5.33 45.74 5.76 51.36 6.46 56.98 7.41 28.87 3.72...
  • Page 135 VC Pro VRF 50/60Hz 9 Operating Limits Figure 2-9.1: Cooling operating limits 10 15 20 25 30 35 Indoor temperature ( C DB) Notes: These figures assume the following operating conditions:  Equivalent piping length: 7.5m  Level difference: 0...
  • Page 136 VC Pro VRF 50/60Hz 10 Sound Levels 10.1 Overall Table 2-10.1: Sound pressure level Model dB(A) Model dB(A) Model dB(A) 36HP 64HP 10HP 38HP 66HP 12HP 40HP 68HP 14HP 42HP 70HP 16HP 44HP 72HP 18HP 46HP 74HP 20HP 48HP 76HP 22HP 50HP 78HP...
  • Page 137 VC Pro VRF 50/60Hz 10.2 Octave Band Levels Figure 2-10.2 8HP octave band level Figure 2-10.3 10HP octave band level NC60 NC60 NC50 NC50 NC40 NC40 NC30 NC30 NC20 NC20 1000 2000 4000 8000 1000 2000 4000 8000 Octave band central frequency (Hz) Octave band central frequency (Hz) Figure 2-10.4 12/14HP octave band level Figure 2-10.5 16HP octave band level...
  • Page 138 VC Pro VRF 50/60Hz Figure 2-10.8 24/26/28/30HP octave band level NC60 NC50 NC40 NC30 NC20 1000 2000 4000 8000 Octave band central frequency (Hz)
  • Page 139 VC Pro VRF 50/60Hz 11 Accessories 11.1 Standard Accessories Table 2-11.1: Standard accessories Name Shape Quantity Function Outdoor unit installation manual Outdoor unit owner's manual Indoor unit owner's manual Flat-blade screwdriver Adjusting indoor and outdoor unit dial switches 90° elbow Connecting pipes Seal plug Used in pipe flushing...
  • Page 140 VC Pro VRF 50/60Hz...
  • Page 141 VC Pro VRF 50/60Hz Part 3 System Design and Installation Preface to Part 3 ................142 Unit Placement and Installation ............143 Outdoor Unit Ducting and Shielding ..........146 Refrigerant Piping Design ..............152 Refrigerant Piping Installation ............162 Drain Piping ..................174 Insulation ..................

  • Page 142: 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 VC Pro 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 143: Unit Placement And Installation

    VC Pro 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 144 VC Pro VRF 50/60Hz 2.1.3 Master and slave unit positioning In systems with multiple outdoor units, the units should be placed in order from largest capacity unit to smallest capacity unit. The largest capacity unit must be placed on the first branch, and be set as the master unit, while the others should be set as slave units.
  • Page 145 VC Pro VRF 50/60Hz Figure 3-2.5: Outdoor unit typical concrete base structure design (unit: mm) Outdoor unit Φ10 Expansion bolt Rubber anti-vibrat i on pads Concrete base Solid ground / surface h=200mm 200mm ≥80mm Figure 3-2.6: Expansion bolt positioning Table 3-2.1: Expansion bolt spacings Dimension (mm) 8-16HP 18-22HP...

  • Page 146: Outdoor Unit Ducting And Shielding

    VC Pro VRF 50/60Hz 2.2 Indoor Units 2.2.1 Placement considerations Placement of indoor units should take account of the following considerations:  Sufficient space for drain piping and for access during servicing and maintenance should be allowed.  To ensure a good cooling effect, short-circuit ventilation (where outlet air returns quickly to a unit’s air inlet) should be avoided.
  • Page 147 VC Pro VRF 50/60Hz 3.3 Ducting for 8-16HP Units 3.3.1 Option A – Transverse ducting Figure 3-3.2: Transverse ducting for 8-16HP 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 148 VC Pro VRF 50/60Hz Ducting for 18-22HP Units 3.3.3 Option A – Transverse ducting Figure 3-3.4: Transverse ducting for 18-22HP units (unit: mm)) 1210 Table 3-3.5: Duct dimensions Table 3-3.6: External static pressure Dimensions (mm) ESP (Pa) Remarks A ≥ 300 Factory default B ≥...
  • Page 149 VC Pro VRF 50/60Hz Ducting for 24-30HP Units 3.3.5 Transverse ducting only Figure 3-3.6: Transverse ducting for 24-30HP units (unit: mm)) Table 3-3.9: Duct dimensions Table 3-3.10: External static pressure Dimensions (mm) ESP (Pa) Remarks A ≥ 300 Factory default B ≥...
  • Page 150 VC Pro VRF 50/60Hz 3.4 Fan Performance The default external static pressure of outdoor units’ air outlets is zero. With the steel mesh cover removed the external static pressure is 20Pa. Figure 3-3.7: 8-10HP units fan performance Figure 3-3.8: 12HP units fan performance 9600 9800 10000 10200 10400 10600 10800 11000 9200 9400 9600 9800 10000 10200 10400 10600 Air flow (m...
  • Page 151 VC Pro VRF 50/60Hz Figure 3-3.13: 28-30HP units fan performance 19200 19400 19600 19800 20000 20200 20400 20600 20800 Air flow (m  Notes for installers  Before installing outdoor unit ducting, be sure to remove the unit’s steel mesh cover, otherwise airflow will be adversely affected.

  • Page 152: Refrigerant Piping Design

    VC Pro 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 153 VC Pro VRF 50/60Hz 4.3 Permitted Piping Lengths and Level Differences 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. Requirement 1: The total length of piping in one 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 all other indoor branch joints, L to L...
  • Page 154 VC Pro VRF 50/60Hz Figure 3-4.2: Permitted refrigerant piping lengths and level differences (16) (22) (26) (140) 3(71) (140) 4(140) 7(28) 8(140) (140) (112) (71) (112) (140) (28) (140) (56) (140) (56) (140) Piping between farthest indoor unit and first indoor branch joint ≤...
  • Page 155 VC Pro VRF 50/60Hz 4.4 Selecting Piping Diameters Tables 3-4.4 to 3-4.8, below, specify the required pipe diameters for the indoor and outdoor piping. The main pipe (L ) and first indoor branch joint (A) should be sized according to whichever of Tables 3-4.4 and 3-4.5 indicates the larger size. Figure 3-4.3: Selecting piping diameters (16) (22)
  • Page 156 VC Pro VRF 50/60Hz Table 3-4.5: Main pipe ) and first indoor branch joint (A) Equivalent length of all liquid pipes < 90m Equivalent length of all liquid pipes ≥ 90m Total capacity of outdoor units Gas pipe (mm) Liquid pipe (mm) Branch joint kit Gas pipe (mm) Liquid pipe (mm)
  • Page 157 VC Pro VRF 50/60Hz 4.5 Refrigerant Piping Selection Example The example below illustrates the piping selection procedure for a system consisting of three outdoor units (32HP + 22HP + 12HP) and 17 indoor units. The system's equivalent length of all liquid pipes is in excess of 90m; the piping between the farthest indoor unit and the first indoor branch joint is less than 40m in length;...
  • Page 158 VC Pro VRF 50/60Hz 4.6 Branch Joints Branch joint design should take account of the following:  U-shaped branch joints should be used – tee joints are not suitable. Branch joint dimensions are given in Tables 3-4.9 and 3-4.10.  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 159 VC Pro VRF 50/60Hz Table 3-4.9: Indoor branch joint dimensions (unit: mm) Model Gas side joints Liquid side joints FQZHN-01D FQZHN-02D FQZHN-03D FQZHN-04D FQZHN-05D FQZHN-06D Table continued on next page …...
  • Page 160 VC Pro VRF 50/60Hz Table 3-4.9: Indoor branch joint dimensions (unit: mm) (continued) Model Gas side joints Liquid side joints FQZHN-07D Table 3-4.10: Outdoor branch joint dimensions (unit: mm) Model Gas side joints Liquid side joints FQZHW-02N1E FQZHW-03N1E...
  • Page 161 VC Pro VRF 50/60Hz 4.7 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 162: Refrigerant Piping Installation

    VC Pro 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...
  • Page 163 VC Pro 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 164 VC Pro 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 165 VC Pro 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 166 VC Pro 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 167 VC Pro 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 168 VC Pro 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. U-shaped branching pipe ...
  • Page 169 VC Pro 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 170 VC Pro 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 The liquid and gas sides can be flushed simultaneously;...
  • Page 171 VC Pro 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 172 VC Pro 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 173 VC Pro 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 174: Drain Piping

    VC Pro 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.
  • Page 175 VC Pro 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 176 VC Pro 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 177: Insulation

    VC Pro VRF 50/60Hz 6.6 Watertightness Test and Water Flow Test Once installation of a drainage piping system is compete, 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 178 VC Pro 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 179: Charging Refrigerant

    VC Pro VRF 50/60Hz 8 Charging Refrigerant 8.1 Calculating Additional Refrigerant Charge The additional refrigerant charge required depends on the lengths and diameters of the outdoor and indoor liquid pipes. Table 3-8.1 shows the additional refrigerant charge required per meter of equivalent pipe length for different diameters of pipe.
  • Page 180 VC Pro VRF 50/60Hz … box continued from previous page Step 3 · Open the valve where the yellow hose meets the pressure gauge, and open the refrigerant tank slightly to let the refrigerant eliminate the air. Caution: open the tank slowly to avoid freezing your hand. ·...

  • Page 181: Electrical Wiring

    VC Pro 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 182 VC Pro VRF 50/60Hz Figure 3-9.1: Outdoor unit power supply wiring Power facilities 1 Outdoor unit Leakage (with leakage protector) protector M anual Outdoor unit sw itch Outdoor unit Leakage protector Manual switch Outdoor unit Outdoor unit Outdoor unit Branch box Outdoor unit Outdoor unit Branch box...
  • Page 183 VC Pro VRF 50/60Hz 9.3 Communication Wiring Communication wiring design and installation should adhere to the following requirements:  0.75mm three-core shielded cable should be used for communication wiring. Using other types of cable can lead to interference and malfunction. ...
  • Page 184 VC Pro VRF 50/60Hz Master Slave Slave unit unit unit H1 H2 E H1 H2 E × P Q E P Q E P Q E  Notes for installers The communication wires should be connected to the master outdoor unit terminals indicated in Figure 3-9.5 and Table 3-9.1.

  • Page 185: Installation In Areas Of High Salinity

    VC Pro VRF 50/60Hz  Communication wiring for a multi outdoor unit system Figure 3-9.7: Communication wiring for a multi outdoor unit system ODU (Master) ODU (Slave) ODU (Slave) P Q E H 1 H 2 E P Q E H 1 H 2 E P Q E H 1 H 2 E...

  • Page 186: Commissioning

    VC Pro VRF 50/60Hz 10.3 Inspection and maintenance In addition to standard outdoor unit servicing and maintenance, the following additional inspections and maintenance should be undertaken for outdoor units installed in seaside locations:  A comprehensive post-installation inspection should check for any scratches or other damage to painted surfaces and any damaged areas should be repainted/repaired immediately.

  • Page 187: Appendix To Part 3 - System Commissioning Report

    Once all the pre-commissioning checks in Part 3, 11.3 “Pre-commissioning Checks” have been completed, a test run should be performed as described below and a VC Pro Series System Commissioning Report (see Part 3, 12 “Appendix to Part 3 –...
  • Page 188 VC Pro VRF 50/60Hz VC Pro 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...
  • Page 189 VC Pro VRF 50/60Hz VC Pro Series System Commissioning Report – Sheet B 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 190 VC Pro VRF 50/60Hz VC Pro Series System Commissioning Report – Sheet C Project name and location System name Cooling DSP1 content Parameters displayed on DSP2 Remarks mode 0.-- Unit address Master unit: 0; slave units: 1, 2 1.-- Unit capacity Refer to Note 1 2.--...
  • Page 191 VC Pro VRF 50/60Hz VC Pro Series System Commissioning Report – Sheet D Project name and location System name … table continued from previous page DSP1 Cooling Parameters displayed on DSP2 Remarks content mode 35.-- Reserved 36.-- Reserved 37.-- Refrigerant quantity Refer to Note 7 38.--...
  • Page 192 Ver. 2019-06 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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