If the Midea V6-i Series split universal outdoor unit MOV192HH1-R is not running after installation, possible issues could include:

1. No indoor units are currently operating (check parameter 21).
2. The unit is in "off" mode (operating mode = 0).
3. An error or protection code is active (check parameter 22).
4. Incorrect capacity settings on switches S9-1 and S9-2.
5. Issues with communication between indoor and outdoor units.
6. Power supply problems or improper wiring.

Check the operating status, error codes, and connections to identify the specific cause.

This answer is automatically generated

Summary of Contents for Midea V6-i Series

Page 1 R410A Commercial Air Conditioners Engineering Data V6-i Series VRF MVi-200WV2RN1(A) MVi-280WV2RN1(A) MVi-224WV2RN1(A) MVi-335WV2RN1(A) MVi-260WV2RN1(A)
Page 2 V6-i VRF 50Hz CONTENTS Part 1 General Information ................3 Part 2 Outdoor Unit Engineering Data ............19 Part 3 System Design and Installation ............77...
Page 3 V6-i VRF 50Hz...
Page 4: Table Of Contents
V6-i VRF 50Hz Part 1 General Information 1 Indoor and Outdoor Unit Capacities ............4 2 External Appearance ................6 3 Nomenclature ................... 8 4 Combination Ratio ................. 12 5 Selection Procedure ................13...
Page 5: Indoor And Outdoor Unit Capacities
V6-i VRF 50Hz 1 Indoor and Outdoor Unit Capacities 1.1 Indoor Units 1.1.1 VRF indoor units Table 1-1.1: 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 V6-i VRF 50Hz 1.3 Outdoor Units Table 1-1.5: Outdoor unit capacity range Capacity Model Name MVi-200WV2RN1(A) MVi-224WV2RN1(A) MVi-260WV2RN1(A) MVi-280WV2RN1(A) 10HP MVi-335WV2RN1(A) 12HP Notes: V6-i series outdoor units could not be combined.
Page 7: External Appearance
V6-i VRF 50Hz 2 External Appearance 2.1 Indoor Units 2.1.1 VRF indoor units Table 1-2.1: 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 Table 1-2.2: Fresh air processing unit appearance...
Page 8 V6-i VRF 50Hz 2.2 Heat Recovery Ventilator Table 1-2.3: Heat recovery ventilator appearance Heat Recovery Ventilator 2.3 Outdoor Units Table 1-2.4: Outdoor unit appearance 7-12HP...
Page 9: Nomenclature
○ ○ ○ ○ ○ 1 Legend Code Remarks Midea VRF VRF 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 Q4: Four-way Cassette T2: Medium Static Pressure Duct...
Page 10 ○ ○ ○ ○ 1 Legend Code Remarks Midea VRF AC series VRF indoor unit Capacity index (the capacity in kW multiplied by 10) High static pressure duct Refrigerant type (N1: R410A) Indoor unit type FA: Fresh Air Processing Unit...
Page 11 ○ ○ ○ 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 FA: Fresh Air Processing Unit Series category (D: DC series)
Page 12 ⑦ ⑧ ⑤ ⑥ ○ 1 Legend Code Remarks Midea VRF Individual series Capacity index (the capacity in kW multiplied by 10) VRF outdoor unit All DC inverter Power supply R: 3 phase, 380-415V, 50Hz Refrigerant type (N1: R410A) Product version code...
Page 13: Combination Ratio
Fresh air processing units and combination ratio units only units only standard indoor units together V6-i Series outdoor units 130% 100% 100% Notes: When fresh air processing units are installed together with standard indoor units, the total capacity of the fresh air processing units must not exceed 30% of the total capacity of the outdoor units and the combination ratio must not exceed 100%.
Page 14: Selection Procedure
V6-i VRF 50Hz 5 Selection Procedure 5.1 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 15 V6-i VRF 50Hz 5.2 Example The following is a selection example based on total heat load for cooling. Figure 1-5.1: Room plan Room D Room E Room A Room B Room C Step 1: Establish design conditions  Indoor air temperature 25°C DB, 18°C WB; outdoor air temperature 33°C DB. ...
Page 16 V6-i VRF 50Hz Table 1-5.2: 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 17 V6-i VRF 50Hz Table 1-5.5: Combinations of Indoor and outdoor units Outdoor unit capacity Sum of capacity indexes of Maximum number connected indoor of connected Capacity index units (standard indoor units indoor units only) 20.0 100 to 260 22.4 112 to 291.2 26.0 130 to 338 28.0...
Page 18 V6-i VRF 50Hz Find the correction factor for piping length and level difference (“K1”) Figure 1-5.3: V6-i rate of change in cooling capacity H(m) 10 20 30 40 50 60 70 80 90 100 110 120 L(m) Notes: The horizontal axis shows equivalent length of piping between farthest indoor unit and first outdoor branch joint;...
Page 19 V6-i VRF 50Hz Table 1-5.9: Combinations of Indoor and outdoor units Outdoor unit capacity Sum of capacity indexes of Maximum number connected indoor of connected Capacity index units (standard indoor units indoor units only) 20.0 100 to 260 22.4 112 to 291.2 26.0 130 to 338 28.0...
Page 20 V6-i VRF 50Hz Find the correction factor for piping length and level difference (“K1”) Figure 1-5.4: V6-i rate of change in cooling capacity H(m) 10 20 30 40 50 60 70 80 90 100 110 120 L(m) Notes: The horizontal axis shows equivalent length of piping between farthest indoor unit and outdoor unit;...
Page 21 V6-i VRF 50Hz...
Page 22 V6-i VRF 50Hz Part 2 Outdoor Unit Engineering Data Specifications ..................22 Dimensions ..................24 Installation Space Requirements ............25 Piping Diagrams ................... 26 Wiring Diagrams .................. 28 Electrical Characteristics ..............29 Functional Components and Safety Devices ......... 30 Capacity Tables ..................31 Operating Limits ..................
Page 23: Specifications
V6-i VRF 50Hz 1 Specifications Table 2-1.1: 7/8/9HP specifications Model name MVi-200WV2RN1(A) MVi-224WV2RN1(A) MVi-260WV2RN1(A) Power supply V/Ph/Hz 380-415/3/50 Capacity 22.4 26.0 Cooling Power input 5.28 6.77 10.04 3.79 3.31 2.59 Capacity 22.4 26.0 Heating Power input 4.43 5.42 6.86 (Rated) 4.51 4.13 3.79...
Page 24 V6-i VRF 50Hz Table 2-1.2: 10/12HP specifications Model name MVi-280WV2RN1(A) MVi-335WV2RN1(A) Power supply V/Ph/Hz 380-415/3/50 Capacity 28.5 33.5 Cooling Power input 12.23 15.30 2.33 2.19 Capacity 28.5 33.5 Heating (Rated) Power input 7.68 10.15 3.71 3.30 Capacity 31.5 37.5 Heating (Max.) Power input 7.87...
Page 25: Dimensions
V6-i VRF 50Hz 2 Dimensions Figure 2-2.1: Dimensions (unit: mm) 1120...
Page 26: Installation Space Requirements
V6-i VRF 50Hz 3 Installation Space Requirements For single unit installation Figure 2-3.1: Single unit installation (unit: mm) (Wall or obstacle) Air inlet >300 Maintain the electric wire and pipeline Air inlet >600 Air outlet For single-row installation Figure 2-3.3: Parallel connect the two units or above (unit: mm) >300 >600 >600...
Page 27: Piping Diagrams
V6-i VRF 50Hz 4 Piping Diagrams Figure 2-4.1: 7/8/9/10HP piping diagram Figure 2-4.2: 12HP piping diagram Legend Parts name Parts name Compressor Stop valve (gas side) High pressure switch Stop valve (liquid side) High pressure sensor Heat exchanger temperature sensor Oil separator Outdoor ambient temperature sensor Four-way valve...
Page 28 V6-i VRF 50Hz 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 and oil to protect compressor from liquid hammering. 3.
Page 29: Wiring Diagrams
V6-i VRF 50Hz 5 Wiring Diagrams Figure 2‐5.1: Wiring diagram ...
Page 30: Electrical Characteristics
V6-i VRF 50Hz 6 Electrical Characteristics Table 2-6.1: Outdoor unit electrical characteristics Power Supply Compressor Capacity Model Min. Max. Volts TOCA volts volts MVi-200WV2RN1(A) 380~415 24.3 2×0.17 2.1+2.1 MVi-224WV2RN1(A) 380~415 24.3 12.4 2×0.17 2.1+2.1 MVi-260WV2RN1(A) 380~415 20.5 24.3 2×0.17 2.1+2.1 10HP MVi-280WV2RN1(A) 380~415...
Page 31: Functional Components And Safety Devices
V6-i VRF 50Hz 7 Functional Components and Safety Devices Table 2-7.1: Functional components and safety devices 7-12HP V6-i VRF Item Compressor discharge pipe 50°C = 50kΩ temperature sensor Compressor Crankcase heater 25W × 2 115°C Fan motor Safety thermostat High pressure switch Off: 4.4 (±0.1) MPa / On: 3.2 (±0.1) MPa Low pressure switch Off: 0.05 (±0.05) MPa / On: 0.15 (±0.05) MPa...
Page 32: Capacity Tables
V6-i VRF 50Hz 8 Capacity Tables 8.1 Cooling Capacity Tables Table 2-8.1: MVi-200WV2RN1(A) 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) 18.11 2.18 22.02 2.45 24.84 2.64 25.56 2.86 27.33 3.06 28.08...
Page 33 V6-i VRF 50Hz Table 2-8.1: MVi-200WV2RN1(A) 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) 15.63 1.84 18.06 2.08 21.85 2.47 22.56 2.77 24.30 3.05 26.13 3.17 26.71 3.38 15.63 1.88 18.06...
Page 34 V6-i VRF 50Hz Table 2-8.1: MVi-200WV2RN1(A) 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) 12.17 1.51 14.53 1.65 16.89 1.82 18.04 2.13 19.55 2.08 22.27 2.31 23.91 2.54 12.17 1.53 14.53...
Page 35 V6-i VRF 50Hz Table 2-8.1: MVi-200WV2RN1(A) 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) 9.51 0.94 11.38 0.97 13.18 1.13 14.12 1.30 15.34 1.40 17.42 1.61 18.73 1.85 9.51 0.95 11.38...
Page 36 V6-i VRF 50Hz Table 2-8.1: MVi-200WV2RN1(A) 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) 6.82 0.63 8.15 0.68 9.45 0.75 10.10 1.03 10.95 1.07 12.45 1.22 13.42 1.32 6.82 0.64 8.15...
Page 37 V6-i VRF 50Hz Table 2-8.2: MVi-224WV2RN1(A) 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) 20.29 2.80 24.67 3.14 27.82 3.38 28.62 3.67 30.61 3.92 31.45 4.26 31.70 4.29 20.29 2.80 24.67 3.20...
Page 38 V6-i VRF 50Hz Table 2-8.2: MVi-224WV2RN1(A) 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) 17.51 2.36 20.23 2.66 24.48 3.16 25.26 3.56 27.22 3.91 29.26 4.07 29.91 4.33 17.51 2.41 20.23...
Page 39 V6-i VRF 50Hz Table 2-8.2: MVi-224WV2RN1(A) 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) 13.63 1.94 16.28 2.11 18.92 2.33 20.20 2.73 21.89 2.67 24.94 2.96 26.78 3.26 13.63 1.97 16.28...
Page 40 V6-i VRF 50Hz Table 2-8.2: MVi-224WV2RN1(A) 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) 10.65 1.21 12.75 1.25 14.77 1.45 15.81 1.67 17.18 1.80 19.51 2.07 20.98 2.37 10.65 1.22 12.75...
Page 41 V6-i VRF 50Hz Table 2-8.2: MVi-224WV2RN1(A) 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) 7.64 0.81 9.13 0.88 10.58 0.97 11.31 1.33 12.27 1.38 13.95 1.57 15.03 1.69 7.64 0.82 9.13...
Page 42 V6-i VRF 50Hz Table 2-8.3: MVi-260WV2RN1(A) 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) 23.55 4.15 28.63 4.65 32.29 5.02 33.22 5.45 35.53 5.81 36.51 6.32 36.79 6.36 23.55 4.15 28.63 4.75...
Page 43 V6-i VRF 50Hz Table 2-8.3: MVi-260WV2RN1(A) 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) 20.32 3.50 23.48 3.95 28.41 4.69 29.33 5.27 31.59 5.80 33.96 6.03 34.72 6.43 20.32 3.57 23.48...
Page 44 V6-i VRF 50Hz Table 2-8.3: MVi-260WV2RN1(A) 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) 15.82 2.88 18.89 3.13 21.96 3.45 23.45 4.05 25.41 3.96 28.95 4.39 31.08 4.84 15.82 2.92 18.89...
Page 45 V6-i VRF 50Hz Table 2-8.3: MVi-260WV2RN1(A) 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) 12.36 1.79 14.80 1.85 17.14 2.15 18.36 2.48 19.94 2.67 22.65 3.07 24.35 3.51 12.36 1.81 14.80...
Page 46 V6-i VRF 50Hz Table 2-8.3: MVi-260WV2RN1(A) 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) 8.86 1.19 10.60 1.30 12.29 1.44 13.13 1.97 14.24 2.04 16.19 2.32 17.44 2.50 8.86 1.21 10.60...
Page 47 V6-i VRF 50Hz Table 2-8.4: MVi-280WV2RN1(A) 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) 25.81 5.06 31.38 5.67 35.40 6.11 36.42 6.63 38.95 7.08 40.02 7.70 40.33 7.75 25.81 5.06 31.38 5.79...
Page 48 V6-i VRF 50Hz Table 2-8.4: MVi-280WV2RN1(A) 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) 22.28 4.26 25.74 4.81 31.14 5.71 32.14 6.42 34.63 7.07 37.23 7.35 38.06 7.83 22.28 4.35 25.74...
Page 49 V6-i VRF 50Hz Table 2-8.4: MVi-280WV2RN1(A) 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) 17.34 3.50 20.71 3.82 24.07 4.21 25.71 4.94 27.85 4.82 31.73 5.34 34.07 5.89 17.34 3.55 20.71...
Page 50 V6-i VRF 50Hz Table 2-8.4: MVi-280WV2RN1(A) 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) 13.55 2.18 16.22 2.25 18.79 2.62 20.12 3.02 21.86 3.25 24.83 3.74 26.69 4.28 13.55 2.21 16.22...
Page 51 V6-i VRF 50Hz Table 2-8.4: MVi-280WV2RN1(A) 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) 9.71 1.46 11.62 1.59 13.47 1.75 14.39 2.40 15.61 2.49 17.74 2.83 19.12 3.05 9.71 1.48 11.62...
Page 52 V6-i VRF 50Hz Table 2-8.5: MVi-335WV2RN1(A) 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) 30.34 6.33 36.89 7.09 41.61 7.65 42.81 8.30 45.78 8.86 47.04 9.63 47.40 9.69 30.34 6.33 36.89 7.24...
Page 53 V6-i VRF 50Hz Table 2-8.5: MVi-335WV2RN1(A) 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) 26.19 5.33 30.26 6.02 36.61 7.14 37.78 8.04 40.71 8.84 43.76 9.19 44.74 9.80 26.19 5.44 30.26...
Page 54 V6-i VRF 50Hz Table 2-8.5: MVi-335WV2RN1(A) 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) 20.38 4.38 24.34 4.77 28.30 5.26 30.22 6.18 32.74 6.03 37.30 6.68 40.05 7.37 20.38 4.44 24.34...
Page 55 V6-i VRF 50Hz Table 2-8.5: MVi-335WV2RN1(A) 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) 15.93 2.72 19.07 2.82 22.08 3.27 23.65 3.78 25.69 4.06 29.18 4.67 31.37 5.35 15.93 2.76 19.07...
Page 56 V6-i VRF 50Hz Table 2-8.5: MVi-335WV2RN1(A) 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) 11.42 1.82 13.65 1.98 15.83 2.19 16.92 3.00 18.34 3.11 20.86 3.54 22.48 3.81 11.42 1.85 13.65...
Page 57 V6-i VRF 50Hz 8.2 Heating Capacity Tables Table 2-8.6: MVi-200WV2RN1(A) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 18.45 6.50 18.38 6.57 18.31 6.63 18.24 6.67 18.24 6.72 18.16 6.81 -18.8 18.59 6.51 18.52 6.57 18.45...
Page 58 V6-i VRF 50Hz Table 2-8.6: MVi-200WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 18.43 7.07 18.36 7.15 18.29 7.23 18.29 7.27 18.29 7.31 18.21 7.40 -18.8 18.71 7.09 18.64 7.17 18.57 7.24 18.57 7.28...
Page 59 V6-i VRF 50Hz Table 2-8.6: MVi-200WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 18.00 7.22 16.93 6.64 15.79 6.09 15.14 5.81 14.57 5.54 13.36 5.02 -18.8 18.14 7.14 16.93 6.57 15.79 6.02 15.14 5.75...
Page 60 V6-i VRF 50Hz Table 2-8.7: MVi-224WV2RN1(A) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 20.50 7.29 20.42 7.36 20.34 7.44 20.26 7.48 20.26 7.53 20.18 7.63 -18.8 20.66 7.30 20.58 7.36 20.50 7.45 20.50 7.49 20.42...
Page 61 V6-i VRF 50Hz Table 2-8.7: MVi-224WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 20.48 7.93 20.40 8.01 20.32 8.10 20.32 8.15 20.32 8.20 20.24 8.29 -18.8 20.79 7.95 20.71 8.03 20.63 8.12 20.63 8.16...
Page 62 V6-i VRF 50Hz Table 2-8.7: MVi-224WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 20.00 8.09 18.81 7.44 17.54 6.82 16.83 6.52 16.19 6.22 14.84 5.63 -18.8 20.16 8.00 18.81 7.37 17.54 6.75 16.83 6.45...
Page 63 V6-i VRF 50Hz Table 2-8.8 MVi-260WV2RN1(A) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 23.37 8.41 23.28 8.50 23.19 8.58 23.10 8.64 23.10 8.69 23.01 8.81 -18.8 23.55 8.42 23.46 8.50 23.37 8.59 23.37 8.65 23.28...
Page 64 V6-i VRF 50Hz Table 2-8.8 MVi-260WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 23.34 9.15 23.25 9.25 23.16 9.35 23.16 9.41 23.16 9.46 23.07 9.57 -18.8 23.70 9.17 23.61 9.27 23.52 9.37 23.52 9.42...
Page 65 V6-i VRF 50Hz Table 2-8.8 MVi-260WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 22.80 9.34 21.44 8.59 20.00 7.88 19.18 7.52 18.46 7.18 16.92 6.49 -18.8 22.98 9.24 21.44 8.50 20.00 7.79 19.18 7.44...
Page 66 V6-i VRF 50Hz Table 2-8.9: MVi-280WV2RN1(A) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 25.83 9.54 25.73 9.64 25.63 9.73 25.53 9.79 25.53 9.85 25.43 9.99 -18.8 26.03 9.55 25.93 9.64 25.83 9.74 25.83 9.81 25.73...
Page 67 V6-i VRF 50Hz Table 2-8.9: MVi-280WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 25.80 10.37 25.70 10.49 25.60 10.60 25.60 10.67 25.60 10.73 25.50 10.86 -18.8 26.20 10.40 26.10 10.51 26.00 10.63 26.00 10.68...
Page 68 V6-i VRF 50Hz Table 2-8.9: MVi-280WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 25.20 10.59 23.70 9.74 22.10 8.93 21.20 8.53 20.40 8.14 18.70 7.36 -18.8 25.40 10.48 23.70 9.64 22.10 8.83 21.20 8.44...
Page 69 V6-i VRF 50Hz Table 2-8.10: MVi-335WV2RN1(A) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 30.75 9.92 30.63 10.02 30.51 10.12 30.39 10.19 30.39 10.25 30.27 10.39 -18.8 30.99 9.93 30.87 10.02 30.75 10.14 30.75 10.20 30.63...
Page 70 V6-i VRF 50Hz Table 2-8.10: MVi-335WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 30.71 10.79 30.60 10.91 30.48 11.03 30.48 11.09 30.48 11.16 30.36 11.29 -18.8 31.19 10.82 31.07 10.94 30.95 11.05 30.95 11.11...
Page 71 V6-i VRF 50Hz Table 2-8.10: MVi-335WV2RN1(A) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -19.8 30.00 11.01 28.21 10.13 26.31 9.29 25.24 8.87 24.29 8.46 22.26 7.66 -18.8 30.24 10.90 28.21 10.03 26.31 9.19 25.24 8.78...
Page 72 V6-i VRF 50Hz 8.3 Capacity Correction Factors for Piping Length and Level Difference Figure 2-8.1: Rate of change in cooling capacity Figure 2-8.2: Rate of change in heating capacity H(m) 10 20 30 40 50 60 70 80 90 100 110 120 L(m) Notes: The horizontal axis shows equivalent length of piping between farthest indoor unit and outdoor unit;...
Page 73 V6-i VRF 50Hz 8.4 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 74: Operating Limits
V6-i VRF 50Hz 9 Operating Limits Figure 2-9.1: Cooling operating limits Figure 2-9.2: Heating 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 ...
Page 75: Sound Levels
V6-i VRF 50Hz 10 Sound Levels 10.1 Overall Table 2-10.1: Sound pressure level Model dB(A) MVi-200WV2RN1(A) MVi-224WV2RN1(A) MVi-260WV2RN1(A) MVi-280WV2RN1(A) MVi-335WV2RN1(A) Notes: Sound pressure level is measured at a position 1000mm in front of the unit and (H+1000)/2mm above the floor in a semi-anechoic chamber. During in-situ operation, sound pressure levels may be higher as a result of ambient noise.
Page 76 V6-i VRF 50Hz Figure 2-10.3: 9HP octave band level NC-70 NC-60 NC-50 NC-40 NC-30 Approximate minimum audible limit on continuous noise NC-20 1000 2000 4000 8000 Octave band center frequency (Hz) Figure 2-10.4: 10/12HP octave band level NC-70 NC-60 NC-50 NC-40 NC-30 Approximate minimum...
Page 77: Accessories
V6-i VRF 50Hz 11 Accessories 11.1 Standard Accessories Table 2-11.1: Dtandard accessories Name Shape Quantity Function Outdoor unit installation manual Outdoor unit owner's manual Installation inststructions: Indoor unit manifold Water outlet connection pipe Used for outdoor drainage Matched resistor Enhances communication stability Waterproof chassis cover Used for centralized drainage Connection pipe...
Page 78 V6-i VRF 50Hz Part 3 System Design and Installation 1 Preface to Part 3 ..................78 2 Unit Placement and Installation ............... 79 3 Refrigerant Piping Design ................. 82 4 Refrigerant Piping Installation ..............88 5 Drain Piping ..................... 99 6 Insulation ....................
Page 79: 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 V6-i 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 80: Unit Placement And Installation
V6-i VRF 50Hz 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 81 V6-i VRF 50Hz 2.1.3 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 82 V6-i VRF 50Hz 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 83: Refrigerant Piping Design
V6-i VRF 50Hz 3 Refrigerant Piping Design 3.1 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 3-3.2, 3-3.3 and 3-3.4) the system should, as far as possible, be equal in terms of number of units, total capacities and total piping lengths.
Page 84 V6-i VRF 50Hz Figure 3-3.2: Permitted refrigerant piping lengths and level differences Outdoor unit Indoor auxiliary pipe Piping between farthest indoor unit and outdoor unit Piping between farthest indoor unit and first indoor branch join The first line Branch Pipe Legend Main pipe L2 to L5...
Page 85 V6-i VRF 50Hz 3.4 Selecting Piping Diameters Tables 3-3.4 to 3-3.5 below, specify the required pipe diameters for the indoor and outdoor piping. The main pipe (L1) and first indoor branch joint (A) should be sized according to whichever of Tables 3-3.4 and 3-3.5 indicates the larger size. Figure 3-3.3: Selecting piping diameters Outdoor Unit (56)
Page 86 V6-i VRF 50Hz 3.5 Refrigerant Piping Selection Example The example below illustrates the piping selection procedure for a system consisting of one outdoor unit (28kW) and 6 indoor units. The system's equivalent length of all liquid pipes and gas pipes is in excess of 90m. Figure 3-3.4: Refrigerant piping selection example Legend Main pipe...
Page 87 V6-i VRF 50Hz 3.6 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 3-3.6.  To ensure even distribution of refrigerant, branch joints should not be installed within 500mm of a 90° bend, another branch joint or the straight section of piping leading to an indoor unit, with the minimum 500mm being measured from the point where the branch joint is connected to the piping, as shown in Figure 3-3.5.
Page 88 V6-i VRF 50Hz 3.7 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 89: Refrigerant Piping Installation
V6-i VRF 50Hz 4 Refrigerant Piping Installation 4.1 Procedure and Principles 4.1.1 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 90 V6-i VRF 50Hz 4.2 Storing Copper Piping 4.2.1 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 91 V6-i VRF 50Hz 4.3.3 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 92 V6-i VRF 50Hz 4.3.5 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 93 V6-i VRF 50Hz 4.5 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 94 V6-i VRF 50Hz … box continued from previous page Piping orientation during brazing Brazing should be conducted downwards or horizontally to avoid filler leakage. Figure 3-4.6: Piping orientation during brazing Piping overlap during brazing Table 3-4.3 specifies the minimum permissible piping overlap and the range of permissible gap sizes for brazed joints on piping of different diameters.
Page 95 V6-i VRF 50Hz 4.6 Branch Joints  Notes for installers  Use U-shaped branch joints as specified on the Figure 3-4.8: Branch joint orientation construction drawings – do not replace U-shaped branch joints with tee joints.  Indoor branch joints may be installed either horizontally or vertically.
Page 96 V6-i VRF 50Hz 4.7.2 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 97 V6-i VRF 50Hz 4.8 Gastightness Test 4.8.1 Purpose To prevent faults caused by refrigerant leakage, a gastightness test should be performed before system commissioning.. 4.8.2 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 98 V6-i VRF 50Hz 4.8.3 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 99 V6-i VRF 50Hz 4.9.2 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 100: Drain Piping
V6-i VRF 50Hz 5 Drain Piping 5.1 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 101 V6-i VRF 50Hz Figure 3-5.5: 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 102 V6-i VRF 50Hz Table 3-5.2: 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 5.4 Drain Piping for Units with Lift Pumps Drain piping for units with lift pumps should take account of the following additional considerations: ...
Page 103: Insulation
V6-i VRF 50Hz 5.6 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 104 V6-i VRF 50Hz 6.1.4 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 gas tightness test has been completed. ...
Page 105: Charging Refrigerant
V6-i VRF 50Hz 7 Charging Refrigerant 7.1 Calculating Additional Refrigerant Charge The additional refrigerant charge required depends on the lengths and diameters of the outdoor and indoor liquid pipes. Table 3-7.1 shows the additional refrigerant charge required per meter of equivalent pipe length for different diameters of pipe.
Page 106 V6-i VRF 50Hz … 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 107: Electrical Wiring
V6-i VRF 50Hz 8 Electrical Wiring 8.1 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 108 V6-i VRF 50Hz Figure 3-8.1: Outdoor unit power supply wiring Figure 3-8.2: Indoor unit power supply wiring Single-phase 220~ 50/60Hz Leakage protector Manual switch Branch box Indoor unit  Notes for installers The 3-phase, 380-415V, 50Hz of power supply should be connected to the outdoor unit power supply terminals as shown in Figure 3-8.3.
Page 109 V6-i VRF 50Hz  Notes for installers The communication wires should be connected to the outdoor unit terminals indicated in Figure 3-8.4 and Table 3-8.1. Caution  Communication wiring has polarity. Care should be taken to connect the poles correctly. Figure 3-8.4: Outdoor unit communication terminals Table 3-8.1: Communication connections Terminals...
Page 110: Installation In Areas Of High Salinity
V6-i VRF 50Hz 9 Installation in Areas of High Salinity 9.1 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 111: Commissioning
V6-i VRF 50Hz 10 Commissioning 10.1 Outdoor Unit Capacity Settings The capacity of outdoor unit (on switch S9-1 and S9-2 on each outdoor unit’s main PCB) is factory-set and should not need changing. Check that the capacity settings are correct. Refer to Table 3-10.1. Table 3-10.1: Outdoor unit capacity settings Switches Code...
Page 112 Once all the pre-commissioning checks in Part 3, 10.3 “Pre-commissioning Checks” have been completed, a test run should be performed as described below and a V6-i Series System Commissioning Report (see Part 3, 11 “Appendix to Part 3 – System Commissioning Report”) should be completed as a record of the operating status of the system during commissioning.
Page 113: Appendix To Part 3 - System Commissioning Report
V6-i VRF 50Hz 11 Appendix to Part 3 – System Commissioning Report A total of up to 4 report sheets should be completed for each system:  One Sheet A, one Sheet B and one Sheet C per system.  One Sheet D per outdoor unit.
Page 114 V6-i VRF 50Hz V6-i 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 Model Serial no. Power supply (V) Outdoor unit information...
Page 115 V6-i VRF 50Hz V6-i Series System Commissioning Report – Sheet B SYSTEM INFORMATION Project name and location Customer company System name Installation company Commissioning date Agent company Commissioning Outdoor ambient temp. engineer Model Serial no. Power supply (V) Outdoor unit information...
Page 116 V6-i VRF 50Hz V6-i 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 117 V6-i VRF 50Hz V6-i 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 capacity (Hp) Actual value = value displayed 1.-- Setting number of indoor units 2.--...
Page 118 Ver. 2021-03 HVAC & Building Technologies Division Midea Group Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China Postal code: 528311 Tel: +86-757-26338346; Fax: +86-757-22390205 hbt.midea.com / www.midea-group.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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Midea V6-i Series Manual

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