BGH BV-V28W/DHN1 Manual
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BGH BV-V28W/DHN1 Manual

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Manual técnico
VRF Unidades Exteriores
Modelos:
BV-V28W/DHN1(At), BV-V36W/DHN1(At), BV-V42W/DHN1(At),
BV-V48W/DHN1(At), BV-V56W/DHN1(At).

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Summary of Contents for BGH BV-V28W/DHN1

  • Page 1 Manual técnico VRF Unidades Exteriores Modelos: BV-V28W/DHN1(At), BV-V36W/DHN1(At), BV-V42W/DHN1(At), BV-V48W/DHN1(At), BV-V56W/DHN1(At).
  • Page 2 Contents Part 1 General Information ................3 Part 2 Outdoor Unit Engineering Data ............13 Part 3 System Design and Installation ............69...
  • Page 3 VRF 50/60Hz...

  • Page 4: Table Of Contents

    Part 1 General Information 1 Indoor and Outdoor Unit Capacities ............4 2 External Appearance ................5 3 Nomenclature ..................6 4 Combination Ratio .................. 7 5 Selection Procedure ................8...

  • Page 5: Indoor And Outdoor Unit Capacities

    VRF 50/60Hz 1 Indoor and Outdoor Unit Capaci es 1.1 Indoor Units Table 1-1.1: Indoor unit abbrevia on codes Abbrevia on code Type One-way Casse e Compact Four-way Casse e Four-way Casse e Medium Sta c Pressure Duct Wall-mounted Table 1-1.2: Indoor unit capacity range Capacity Capacity index...

  • Page 6: External Appearance

    2 External Appearance 2.1 Indoor Units Table 1-2.1: Indoor unit appearance One-way Cassette Four-way Cassette Compact Four-way Cassette Wall-mounted Medium Static Pressure Duct 2.2 Outdoor Units Table 1-2.2: Outdoor unit appearance 28 kBtu/h 36/42 kBtu/h 48/56 kBtu/h...

  • Page 7: Nomenclature

    ② ③ ④ ⑤ ⑥ ⑦ Legend Code Remarks BGH VRF VRF indoor unit Capacity index (the capacity in kBtu/h) Indoor unit type Q1: One-way Cassette Q4C: Compact Four-way Cassette Q4: Four-way Cassette T2: Medium Static Pressure Duct G: Wall Mounted...

  • Page 8: Combination Ratio

    4 Combination Ratio Sum of capacity indexes of the indoor units Combination ratio = Capacity index of the outdoor unit Table 1-4.1: Indoor and outdoor unit combination ratio limitations Type Minimum combination ratio Maximum combination ratio Atom Series outdoor units 130% Table 1-4.2: Combinations of Indoor and outdoor units Outdoor unit capacity...

  • Page 9: Selection Procedure

    VRF 50/60Hz 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 10 5.2 Example The following is a selection example based on total heat load for cooling. Figure 1-5.1: Room plan Room B Room C Room A Room D Step 1: Establish design conditions • Indoor air temperature 25°C DB, 18°C WB; outdoor air temperature 33°C DB. •...
  • Page 11 VRF 50/60Hz 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 index Model 20°C DB 23°C DB 26°C DB 27°C DB 28°C DB 30°C DB...
  • Page 12 • The number of connected indoor units is 4 and the maximum number of connected indoor units on the 10kW outdoor unit is 6, so the number of connected indoor units is within the limitation. • Calculate the corrected capacity of the outdoor unit: The sum of the indoor unit CIs is 120 and the CI of the 10kW outdoor unit is 100, so the combination ratio is 120 / 100 = 120%.
  • Page 13 VRF 50/60Hz the required heat load is 10.5kW. Provisionally select an outdoor unit using the sum of the capacity indexes (CIs) of the selected indoor units (as shown • in Table 1-5.5), ensuring that the combination ratio is between 50% and 130%. Refer to Table 1-5.6. As the sum of CIs of the indoor units is 120.
  • Page 14 Part 2 Outdoor Unit Engineering Data 1 Specifications ..................14 2 Dimensions ................... 15 3 Installation Space Requirements ............17 4 Piping Diagrams ..................18 5 Wiring Diagrams ..................20 6 Electrical Characteristics ................ 23 7 Capacity Tables ..................24 8 Operating Limits ..................

  • Page 15: Specifications

    VRF 50/60Hz 1 Speci cations BV-V28W/DHN1(At) / BV-V36W/DHN1(At) / BV-V42W/DHN1(At) Table 2-1.1: 28/36/42 model speci cations Model BV-V28W/DHN1(At) BV-V36W/DHN1(At) BV-V42W/DHN1(At) Power supply V-Ph-Hz 220-240/1/ 50(60) kBtu/h Capacity Cooling Input 2.66 3.31 kW/ KW 3.81 3.76 3.63 kBtu/h Capacity Heating Input 2.04...
  • Page 16 BV-V48W/DHN1(At) / BV -V56W/DHN1(At) Table 2-1.2: 48/52 model specifications Model BV-V48W/DHN1(At) BV-V56W/DHN1(At) Power supply V-Ph-Hz 220-240/1/ 50(60) kBtu/h Capacity 15.5 Cooling Input 3.97 4.87 kW/ KW 3.53 3.18 kBtu/h Capacity Heating Input 3.98 4.82 kW/ kW 4.02 3.73 Total capacity 45~130% of outdoor unit capacity Connectable indoor unit...

  • Page 17: Dimensions

    2 Dimensions (unit: mm) Figure 2-2.1: 28 model front view dimensions Figure 2-2.2: 28 model top view dimensions Figure 2-2.3: 28/36 model front view Dimensions Figure 2-2.4: 28/36 model front top Dimensions Figure 2-2.5: 48/56 model front view Dimensions Figure 2-2.6: 48/56 model front top Dimensions Model 36/42 48/56...

  • Page 18: Installation Space Requirements

    3 Installation Space Requirements Figure 2-3.1: Single unit installation top view (unit: mm) Figure 2-3.2: Single unit installation side view (unit: mm) Figure 2-3.3: Multiple unit installation top view (unit: mm) Figure 2-3.4: Multiple unit installation side view (unit: mm)

  • Page 19: Piping Diagrams

    VRF 50/60Hz 4 Piping Diagrams Figure 2-4.1: 28 model Piping diagram Figure 2-4.2: 36/42 model Piping diagram...
  • Page 20 Figure 2-4.3: 48/56 model Piping diagram Accumulator Key components: 1. Oil separator: Separates oil from gas refrigerant pumped out of the compressor and quickly returns it to the compressor. Separation efficiency is up to 99%. 2. Gas-liquid separator: Stores liquid refrigerant and oil to protect compressor from liquid hammering. 3.

  • Page 21: Wiring Diagrams

    VRF 50/60Hz 5 Wiring Diagrams Figure 2-5.1: 28 model wiring diagram Component code Description Component code Description CH1-CH5 Magnetic ring Relay COMP. Compressor STF1 Four-way valve Electronic expansion valve Compressor top thermostat DCFAN DC fan Outdoor discharge temperature sensor HEAT Crankcase heater Refrigerant radiator temperature sensor H-PRO...
  • Page 22 Figure 2-5.2: 36/42 model wiring diagram Component code Description Component code Description Rectifier bridge stacking Relay CH1-CH6 Magnetic ring STF1 Four-way valve COMP. Compressor Outdoor heat exchanger temperature sensor AC current transformer Outdoor ambient temperature sensor D502,D503 Fast-recover diode Discharge temperature sensor Electronic expansion valve T6 dedicated line group DC fan...
  • Page 23 VRF 50/60Hz Figure 2-5.3: 48/56 model wiring diagram...

  • Page 24: Electrical Characteristics

    HEAT1 Crankcase heater 6 Electrical Characteris cs Table 2-6.1: Outdoor unit electrical characteris cs Power Supply Compressor Model Min. Max. Volts TOCA volts volts BV-V28W/DHN1(At) 50/60Hz 220-240 21.25 18.1A So start 9.45 0.08 BV-V36W/DHN1(At) 50/60Hz 220-240 28.75 So start 9.45 0.17...

  • Page 25: Capacity Tables

    VRF 50/60Hz 7 Capacity Tables 7.1 Cooling Capacity Tables Table 2-7.1: BV -V28W/DHN1(At) 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) 7.00 0.86 8.33 1.05 9.67 1.13 10.11 1.17 10.56 1.20 10.78...
  • Page 26 Table 2-7.1: BV-V28W/DHN1(At) 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) 5.89 0.72 7.11 0.91 8.22 1.08 8.78 1.16 9.33 1.24 10.11 1.29 10.33 1.33 5.89 0.74 7.11...
  • Page 27 VRF 50/60Hz Table 2-7.1: BV-V28W/DHN1(At) 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) 4.89 0.59 5.78 0.70 6.78 0.83 7.22 0.91 7.67 0.95 8.56 1.10 9.56 1.26 4.89 0.59...
  • Page 28 Table 2-7.1: BV-V28W/DHN1(At) 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) 3.78 0.46 4.56 0.54 5.22 0.61 5.56 0.66 6.00 0.69 6.67 0.80 7.44 0.92 3.78 0.46 4.56...
  • Page 29 VRF 50/60Hz Table 2-7.1: BV-V28W/DHN1(At) 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) 2.67 0.34 3.22 0.39 3.78 0.45 4.00 0.47 4.22 0.50 4.78 0.57 5.33 0.61 2.67 0.35...
  • Page 30 Table 2-7.2: BV -V36W/DHN1(At) 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) 8.78 1.09 10.44 1.33 12.11 1.42 12.56 1.48 13.22 1.52 13.56 1.65 13.89 1.66 8.78 1.09 10.44 1.35 12.11...
  • Page 31 VRF 50/60Hz Table 2-7.2: BV-V36W/DHN1(At) 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) 7.44 0.92 8.89 1.14 10.33 1.36 11.00 1.46 11.67 1.57 12.56 1.63 12.89 1.68 7.44 0.94 8.89...
  • Page 32 Table 2-7.2: BV -V36W/DHN1(At) 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) 6.11 0.74 7.22 0.89 8.44 1.05 9.00 1.14 9.56 1.21 10.78 1.39 11.89 1.60 6.11 0.75 7.22 0.90...
  • Page 33 VRF 50/60Hz Table 2-7.2: BV-V36W/DHN1(At) 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) 4.67 0.58 5.67 0.69 6.56 0.78 7.00 0.83 7.44 0.89 8.33 1.01 9.33 1.16 4.67 0.58 5.67 0.69...
  • Page 34 Table 2-7.2: BV-V36W/DHN1(At) 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) 3.33 0.43 4.00 0.49 4.67 0.57 5.00 0.59 5.33 0.63 6.00 0.72 6.67 0.78 3.33 0.43 4.00 0.50 4.67 0.57...
  • Page 35 VRF 50/60Hz Table 2-7.3: BV -V42W/DHN1(At) 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) 10.52 1.36 12.59 1.66 14.56 1.77 15.15 1.84 15.84 1.89 16.23 2.06 16.62 2.08 10.52 1.36 12.59...
  • Page 36 Table 2-7.3: BV -V42W/DHN1(At) 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) 8.95 1.14 10.62 1.42 12.30 1.69 13.18 1.82 14.07 1.96 15.15 2.03 15.44 2.10 8.95 1.16 10.62 1.44 12.30...
  • Page 37 VRF 50/60Hz Table 2-7.3: BV -V42W/DHN1(At) 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) 7.28 0.92 8.66 1.10 10.13 1.30 10.82 1.42 11.51 1.51 12.89 1.74 14.36 1.99 7.28 0.93 8.66...
  • Page 38 Table 2-7.3: BV-V42W/DHN1(At) 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) 5.70 0.72 6.79 0.85 7.87 0.96 8.36 1.03 8.95 1.10 10.03 1.26 11.11 1.45 5.70 0.73 6.79 0.85 7.87 0.97...
  • Page 39 VRF 50/60Hz Table 2-7.3: BV -V42W/DHN1(At) 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) 4.03 0.54 4.82 0.62 5.61 0.71 6.00 0.74 6.39 0.79 7.18 0.90 7.97 0.97 4.03 0.54 4.82...
  • Page 40 Table 2-7.4: BV-V48W/DHN1(At) 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) 12.30 1.62 14.60 1.99 17.00 2.12 17.60 2.21 18.50 2.27 18.90 2.47 19.40 2.49 12.30 1.62 14.60 2.02 17.00 2.12...
  • Page 41 VRF 50/60Hz Table 2-7.4: BV -V48W/DHN1(At) 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) 10.40 1.37 12.40 1.71 14.40 2.04 15.40 2.19 16.40 2.35 17.70 2.44 18.10 2.52 10.40 1.39...
  • Page 42 Table 2-7.4: BV -V48W/DHN1(At) 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) 8.50 1.11 10.20 1.32 11.80 1.56 12.60 1.71 13.40 1.81 15.00 2.08 16.70 2.39 8.50 1.11 10.20 1.34 11.80...
  • Page 43 VRF 50/60Hz Table 2-7.4: BV -V48W/DHN1(At) 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) 6.60 0.87 7.90 1.02 9.20 1.15 9.80 1.24 10.40 1.31 11.70 1.51 13.00 1.73 6.60 0.87 7.90...
  • Page 44 Table 2-7.4: BV -V48W/DHN1(At) 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) 4.70 0.64 5.60 0.74 6.50 0.85 7.00 0.90 7.50 0.94 8.40 1.07 9.30 1.16 4.70 0.64 5.60 0.76 6.50...
  • Page 45 VRF 50/60Hz Table 2-7.5: BV-V56W/DHN1(At) 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) 13.60 1.99 16.20 2.43 18.80 2.60 19.50 2.71 20.50 2.79 21.00 3.03 21.50 3.05 13.60 1.99 16.20 2.48...
  • Page 46 Table 2-7.5: BV-V56W/DHN1(At) 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) 11.50 1.67 13.70 2.09 15.90 2.49 17.10 2.68 18.20 2.88 19.50 2.99 20.00 3.09 11.50 1.71 13.70 2.12 15.90...
  • Page 47 VRF 50/60Hz Table 2-7.5: BV -V56W/DHN1(At) 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) 9.40 1.36 11.20 1.62 13.10 1.91 14.00 2.08 14.80 2.22 16.70 2.56 18.50 2.92 9.40 1.37...
  • Page 48 Table 2-7.5: BV-V56W/DHN1(At) 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) 7.30 1.07 8.70 1.25 10.10 1.41 10.90 1.51 11.60 1.62 13.00 1.85 14.40 2.13 7.30 1.07 8.70 1.26 10.10 1.42...
  • Page 49 VRF 50/60Hz Table 2-7.5: BV-V56W/DHN1(At) 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) 5.20 0.79 6.30 0.91 7.30 1.05 7.80 1.09 8.20 1.16 9.20 1.32 10.30 1.42 5.20 0.79 6.30 0.93...
  • Page 50 7.2 Heating Capacity Tables Table 2-7.6: BV-V28W/DHN1(At) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 7.66 1.85 7.64 1.89 7.61 1.97 7.61 2.03 7.58 2.08 7.55 2.11 -11.8 7.78 1.88 7.75 1.93 7.73 2.02...
  • Page 51 VRF 50/60Hz Table 2-7.6: BV-V28W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 7.71 2.44 7.69 2.47 7.69 2.49 7.66 2.50 7.66 2.52 7.63 2.45 -11.8 7.83 2.44 7.80 2.47 7.80 2.50 7.78...
  • Page 52 Table 2-7.6: BV-V28W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 7.26 2.35 6.78 2.16 6.31 2.13 6.06 2.08 5.83 2.05 5.34 1.97 -11.8 7.26 2.30 6.78 2.12 6.31 2.10 6.06 2.05 5.83...
  • Page 53 VRF 50/60Hz Table 2-7.7: BV-V36W/DHN1(At) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 10.21 2.85 10.19 2.93 10.15 3.06 10.15 3.14 10.11 3.21 10.07 3.25 -11.8 10.37 2.90 10.33 2.99 10.29 3.11 10.29 3.19 10.25 3.27...
  • Page 54 Table 2-7.7: BV -V36W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 10.28 3.76 10.25 3.80 10.25 3.85 10.21 3.86 10.21 3.89 10.17 3.79 -11.8 10.44 3.77 10.40 3.82 10.40 3.85 10.36 3.88 10.36 3.89...
  • Page 55 VRF 50/60Hz Table 2-7.7: BV -V36W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 9.68 3.63 9.03 3.34 8.41 3.28 8.08 3.22 7.77 3.18 7.12 3.05 -11.8 9.68 3.55 9.03 3.28 8.41 3.22 8.08 3.16...
  • Page 56 Table 2-7.8: BV -V42W/DHN1(At) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 11.92 3.30 11.88 3.39 11.83 3.53 11.83 3.62 11.79 3.71 11.75 3.77 -11.8 12.10 3.35 12.06 3.44 12.01 3.59 12.01 3.69 11.97 3.78 11.97...
  • Page 57 VRF 50/60Hz Table 2-7.8: BV -V42W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 12.00 4.35 11.96 4.40 11.96 4.44 11.91 4.47 11.91 4.49 11.87 4.39 -11.8 12.18 4.35 12.13 4.41 12.13 4.46 12.09 4.48...
  • Page 58 Table 2-7.8: BV -V42W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 11.29 4.19 10.53 3.86 9.82 3.80 9.42 3.72 9.07 3.66 8.31 3.51 -11.8 11.29 4.11 10.53 3.79 9.82 3.73 9.42 3.65 9.07 3.61...
  • Page 59 VRF 50/60Hz Table 2-7.9: BV -V48W/DHN1(At) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 13.63 3.61 13.58 3.71 13.52 3.86 13.52 3.96 13.47 4.06 13.42 4.12 -11.8 13.83 3.67 13.78 3.77 13.73 3.93 13.73 4.03 13.68...
  • Page 60 Table 2-7.9: BV -V48W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 13.71 4.76 13.66 4.81 13.66 4.86 13.61 4.89 13.61 4.92 13.56 4.79 -11.8 13.92 4.76 13.87 4.82 13.87 4.87 13.82 4.90 13.82 4.92...
  • Page 61 VRF 50/60Hz Table 2-7.9: BV -V48W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 12.90 4.58 12.04 4.22 11.23 4.15 10.77 4.07 10.36 4.01 9.50 3.84 -11.8 12.90 4.50 12.04 4.15 11.23 4.08 10.77 4.00...
  • Page 62 Table 2-7.10: BV-V56W/DHN1(At) heating capacity Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 15.33 4.37 15.27 4.48 15.22 4.68 15.22 4.79 15.16 4.92 15.10 4.98 -11.8 15.56 4.44 15.50 4.56 15.44 4.76 15.44 4.88 15.39 5.01 15.39 5.06...
  • Page 63 VRF 50/60Hz Table 2-7.10: BV-V56W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 15.43 5.77 15.37 5.82 15.37 5.89 15.31 5.92 15.31 5.95 15.26 5.81 -11.8 15.66 5.77 15.60 5.83 15.60 5.89 15.54 5.93 15.54...
  • Page 64 Table 2-7.10: BV-V56W/DHN1(At) heating capacity (continued) Indoor air temp. °C DB Outdoor air temp. °C DB °C WB -13.7 14.51 5.55 13.54 5.12 12.63 5.02 12.11 4.92 11.66 4.85 10.69 4.65 -11.8 14.51 5.44 13.54 5.01 12.63 4.94 12.11 4.84 11.66 4.77 10.69...
  • Page 65 VRF 50/60Hz 7.3 Capacity Correction Factors for Piping Length and Level Di erence Figure 2-7.1: 28 model rate of change in cooling capacity Figure 2-7.2: 28 model rate of change in heating capacity Figure 2-7.3: 36/42 model rate of change in cooling capacity Figure 2-7.4: 36/42 model rate of change in heating capacity Figure 2-7.5: 48/56 model rate of change in cooling capacity Figure 2-7.6: 48/56 model rate of change in heating capacity...

  • Page 66: Operating Limits

    8 Operating Limits Figure 2-8.1: Operating limits Coolinging operation ° 12 17 22 27 32 37 C WB Indoor temperature( ° Table 2-8.1: Operating limits Mode Outdoor temperature Room temperature Cooling operation -5ºC〜55ºC 17ºC〜32ºC Heating operating -15ºC〜27ºC 0ºC〜30ºC Dehumidification operating -5ºC〜55ºC 12ºC〜32ºC Notes:...

  • Page 67: Sound Levels

    9 Sound Levels 9.1 Overall Table 2-9.1: Sound pressure level Model dB(A) Height (m) BV-V28W/DHN1(At) BV-V36W/DHN1(At) BV-V42W/DHN1(At) BV-V48W/DHN1(At) BV-V56W/DHN1(At) Notes: Sound pressure level is measured at a position 1m in front of the unit and Hm 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 68 Figure 2-9.4: 42 model octave band level Figure 2-9.5: 48 model octave band level Figure 2-9.6: 56 model octave band level...

  • Page 69: Accessories

    VRF 50/60Hz 10 Accessories Table 2-10.1: Standard accessories Name Shape Quantity Outdoor unit installation manual Outdoor unit owner’s manual Water outlet connection pipe Network Matching Wires Rubber wire ring (for 36/42 models) Seal ring (for 28 models) Connecting pipe (for 48 model) Connecting pipe (for 56 model)
  • Page 70 Part 3 System Design and Installation 1 Preface to Part 3 ................... 70 2 Unit Placement and Installation ............71 3 Refrigerant Piping Design ..............75 4 Refrigerant Piping Installation ............... 82 5 Drain Piping ..................93 6 Insulation ....................97 7 Charging Refrigerant ................

  • Page 71: Preface To Part 3

    VRF 50/60Hz 1 Preface to Part 3 1.1 Notes for Installers Boxes The informa on contained in this Engineering Data Book may primarily be of use during the system design stage of a Midea Atom Series VRF project. Addi onal important informa on which may primarily be of use during field installa on has been placed in boxes, such as the example below, tled “Notes for installers”.

  • Page 72: Unit Placement And Installation

    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. • Air conditioners should not be installed in positions where dust or dirt may affect heat exchangers. Air conditioners should not be installed in locations where exposure to oil or to corrosive or harmful gases, such as •...
  • Page 73 VRF 50/60Hz 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. Bases should be at least 200mm high to provide sufficient access for installation of piping.
  • Page 74 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 75 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/heating effect, short-circuit ventilation (where outlet air returns quickly to a unit’s air inlet) should be avoided.

  • Page 76: Refrigerant Piping Design

    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 3-3.4 and Figure 3-3.5) the system should, as far as possible, be equal in terms of number of units, total capacities and total piping lengths.
  • Page 77 VRF 50/60Hz 3.4 The Permitted Piping Lengths and Level Differences The piping length and level difference requirements that apply are summarized in Table 3-3.2 and are fully described as follows (refer to Figure 3-3.1 and Figure 3-3.3): Figure 3-3.1: The first connecting method (Welding) Figure 3-3.2: The second connecting method (Welding) Legend Main pipe...
  • Page 78 Figure 3-3.3: The third connecting method (Flaring) Outdoor Unit Legend Main pipe a to f Indoor auxiliary pipes Table 3-3.2: Summary of permitted refrigerant piping lengths and level differences Permitted value Piping ≤50m(28 model) Total Pipe Length(Actual) ≤65m(36/42model) L1+L2+L3+L4+L5+a+b+c+d+e+f ≤100m(48/56 model) ≤35m(28 model) Actual Length ≤45m(36/42model)
  • Page 79 Capacity of indoor unit (A×100W) Gas pipe (mm) Liquid pipe (mm) A≤45 Φ12.7 Φ6.35 A≥56 Φ15.9 Φ9.53 Table 3-3.7: Pipe diameter of the outdoor unit Outdoor unit model Gas pipe (mm) Liquid pipe (mm) BV-V28W/DHN1(At) BV-V36W/DHN1(At) Φ15.9 Φ9.53 BV-V42W/DHN1(At) BV-V48W/DHN1(At) BV-V56W/DHN1(At) Φ19.1 Φ9.53...
  • Page 80 3.6 Refrigerant Piping Selection Example The example below illustrates the piping selection procedure for a system consisting of one outdoor unit (16kW) and 6 indoor units. The system's equivalent length of all liquid pipes and gas pipes is in excess of 90m. Figure 3-3.5: Refrigerant piping selection example Legend Main pipe...
  • Page 81 VRF 50/60Hz 3.7 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 3-3.7. • • 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 3-3.6.
  • Page 82 3.8 Refrigerant Leakage Precautions R410A refrigerant is not flammable in air at temperatures up to 100°C at atmospheric pressure and is generally considered a safe substance to use in air conditioning systems. Nevertheless, precautions should be taken to avoid danger to life in the unlikely event of a major refrigerant leakage.

  • Page 83: Refrigerant Piping Installation

    VRF 50/60Hz 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 Gas tightness Joint Vacuum drying insulation and installation flushing test insulation...
  • Page 84 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. • To prevent dust or moisture entering, piping should be kept sealed whilst in storage and until it is about to be •...
  • Page 85 VRF 50/60Hz 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 86 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 87 VRF 50/60Hz 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 88 … 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 89 VRF 50/60Hz 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 •...
  • Page 90 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 91 VRF 50/60Hz 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 92 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 93 VRF 50/60Hz 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 94: Drain Piping

    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 95 VRF 50/60Hz installed too close to indoor unit lift pumps. Figure 3-5.5: Drain piping air vents • 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. •...
  • Page 96 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 97 VRF 50/60Hz 5.6 Water tightness Test and Water Flow Test Once installation of a drainage piping system is complete, water tightness and water flow tests should be performed.  Notes for installers Water tightness test • Fill the piping with water and test for leakages over a 24-hour period. Water ow test (natural drainage test) •...

  • Page 98: Insulation

    6 Insulation 6.1 Refrigerant Piping Insulation 6.1.1 Purpose During operation, the temperature of the refrigerant piping varies. Insulation is required to ensure unit performance and compressor lifespan. During cooling, the gas pipe temperature can be very low. Insulation prevents condensation forming on the piping.
  • Page 99 VRF 50/60Hz Figure 3-6.1: Installation of joint insulation (unit: mm) 6.2 Drain Piping Insulation • Use rubber/plastic insulating tube with a B1 fire resistance rating. • The insulation should typically be in excess of 10mm thick. • For drain piping installed inside a wall, insulation is not required. •...

  • Page 100: Charging Refrigerant

    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 101 VRF 50/60Hz … box continued from previous page Step 4 · Open the three valves on the pressure gauge to begin charging refrigerant. · When the amount charged reaches R (kg), close the three valves. If the amount charged has not reached R (kg) but no additional refrigerant can be charged, close the three valves on the pressure gauge, run the outdoor unit in cooling mode, and then open the yellow and blue valves.

  • Page 102: Electrical Wiring

    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 103 VRF 50/60Hz Figure 3-8.1: Indoor unit power supply wiring Single-phase 220~ 50/60Hz Leakage protector Manual switch Branch box Indoor unit  Notes for installers The power supply should be connected to the outdoor unit power supply terminals as shown in Figure 3-8.2. Figure 3-8.2: Outdoor unit 1-phase power supply terminals 8.3 Communication Wiring Communication wiring design and installation should adhere to the following requirements:...
  • Page 104  Notes for installers The communication wires should be connected to the outdoor unit terminals indicated in Figure 3-8.3 and Table 3-8.2. Caution • Communication wiring has polarity. Care should be taken to connect the poles correctly. Figure 3-8.3: Outdoor unit communication term inals Table 3-8.2: Communication connections Terminals Connection...
  • Page 105 VRF 50/60Hz 8.4 Wiring example Figure 3-8.4: System communication wiring example Note: The wired controller and centralized controller in the dashed box are optional accessories. If necessary, please contact the local distributor for purchase.

  • Page 106: Installation In Areas Of High Salinity

    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 107: Commissioning

    VRF 50/60Hz 10 Commissioning 10.1 Multi-system Projects For projects with multiple refrigerant systems, each independent refrigeration system (i.e. each system of one outdoor unit and its connected indoor units) should be given a test run independently, before the multiple systems that make up a project are run simultaneously.
  • Page 108 the CHECK button on the outdoor unit’s main PCB and complete the cooling mode columns of one Sheet D and one Sheet E of the system commissioning report for the outdoor unit. Run the system in heating mode with the following settings: temperature 30°C; fan speed high. After one hour, complete Sheet B of the system commissioning report then check the system parameters using the CHECK button on the outdoor unit’s main PCB and complete the heating mode columns of one Sheet D and one Sheet E of the system commissioning report for the outdoor unit.

  • Page 109: Appendix To Part 3 - System Commissioning Report

    VRF 50/60Hz 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 110 Informe de puesta en servicio del sistema - Hoja A INFORMACIÓN DEL SISTEMA Nombre y ubicación del Empresa cliente proyecto Nombre del sistema Empresa de instalación Fecha de puesta en servicio Empresa representante Temperatura ambiente Ingeniero de puesta en exterior servicio Modelo Número de serie...
  • Page 111 VRF 50/60Hz Informe de puesta en servicio del sistema - Hoja B INFORMACIÓN DEL SISTEMA Nombre y ubicación del Empresa cliente proyecto Nombre del sistema Empresa de instalación Fecha de puesta en servicio Empresa representante Temperatura ambiente Ingeniero de puesta en exterior servicio Modelo...
  • Page 112 Informe de puesta en servicio del sistema - Hoja C Nombre y ubicación del proyecto Nombre del sistema REGISTRO DE PROBLEMAS OBSERVADOS DURANTE LA PUESTA EN SERVICIO N.º de serie de la N.º Descripción del problema observado Posible causa Solución de problemas iniciada unidad involucrada LISTA DE VERIFICACIÓN FINAL DE LA UNIDAD EXTERIOR ¿Se realizó...
  • Page 113 VRF 50/60Hz Informe de puesta en servicio del sistema - Hoja D Nombre y ubicación del proyecto Nombre del sistema Valores observados Contenido Modo Modo Parámetros mostrados en DSP2 Comentarios de DSP1 refrigeración calefacción 0.-- Frecuencia de funcionamiento Valor real = valor mostrado 1.-- Modo de funcionamiento Consulte la Nota 1...
  • Page 114 BGH S.A. Brasil 731. Capital Federal. CP (C1154AAK). www.bgh.com.ar...

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