Kaysun Amazon Unitario FD Engineering Data Book
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Kaysun Amazon Unitario FD Engineering Data Book

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ENGINEERING DATA BOOK
KMF-252 DN6
KMF-280 DN6
KMF-335 DN6
Please read this manual carefully and keep it for future reference.
All the pictures in this manual are for illustration purpose only.
Amazon Unitario FD
KMF-400 DN6
KMF-450 DN6
KMF-560 DN6
KMF-615 DN6

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  • Page 1 ENGINEERING DATA BOOK Amazon Unitario FD KMF-252 DN6 KMF-400 DN6 KMF-560 DN6 KMF-280 DN6 KMF-450 DN6 KMF-615 DN6 KMF-335 DN6 Please read this manual carefully and keep it for future reference. All the pictures in this manual are for illustration purpose only.
  • Page 3 AMAZON UNITARIO FD CONTENTS Part 1 General Information .................3 Part 2 Outdoor Unit Engineering Data ............12 Part 3System Design and Installation ............105...
  • Page 4 AMAZON UNITARIO FD...

  • Page 5: General Information

    AMAZON UNITARIO FD Part 1 General Information 1 Outdoor Unit Capacities ................4 2 External Appearance .................5 3 Combination Ratio ..................6 4 Selection Procedure ..................7...
  • Page 6 Table 1-1.5: Outdoor unit capacity range Capacity Model Name Combination Type KMF-252 DN6 10HP KMF-280 DN6 12HP KMF-335 DN6 14HP KMF-400 DN6 16HP KMF-450 DN6 20HP KMF-560 DN6 22HP KMF-615 DN6 Notes: 1. Amazon unitario FD outdoor units could not be combined.

  • Page 7: External Appearance

    AMAZON UNITARIO FD 2 External Appearance Table 1-2.4: outdoor unit appearance 8/10/12/14HP 16/20/22HP...
  • Page 8 AMAZON UNITARIO FD 3 Combination Ratio Sum of capacity indexes of the indoor units Combination ratio = Capacity index of the outdoor units Table 1-5.1: Indoor and outdoor unit combination ratio limitations Maximum combination ratio Minimum Type Fresh air processing...

  • Page 9: Selection Procedure

    AMAZON UNITARIO FD 4 Selection Procedure 4.1 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...
  • Page 10 AMAZON UNITARIO FD 4.2 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 ■ Indoor air temperature 25.8°C DB, 18°C WB; outdoor air temperature 33°C DB.
  • Page 11 AMAZON UNITARIO FD Table 1-6.2: Extract from medium static pressure duct (T2) cooling capacity table Indoor air temperature Capacity Model 14°C WB 16°C WB 18°C WB 19°C WB 20°C WB 22°C WB 24°C WB index 20°C DB 23°C DB 26°C DB 27°C DB...
  • Page 12 AMAZON UNITARIO FD Table 1-6.5: Extract from Table 1-5.2 Combinations of Indoor and outdoor units Outdoor unit capacity Sum of capacity indexes of Maximum number of connected indoor units (standard Capacity connected indoor units indoor units only) index 25.2 126 to 327.6 28.0...
  • Page 13 AMAZON UNITARIO FD c) Find the correction factor for piping length and level difference (“K1”) Figure 1-6.3: Amazon unitario FD rate of change in cooling capacity K1=0.927 Notes: 1. The horizontal axis shows equivalent length of piping between farthest indoor unit and first outdoor branch joint; the vertical axis shows the largest level difference between indoor unit and outdoor unit. For level differences, positive values indicate that the outdoor unit is above the indoor unit, negative values indicate that the outdoor unit is below the indoor unit. d) Calculate the corrected capacity of KMF-560 DN6 (“C”) by using K1: C = B ×...

  • Page 14: Table Of Contents

    AMAZON UNITARIO FD Part 2 Outdoor Unit Engineering Data 1 Specifications ..................13 2 Dimensions ....................16 3 Installation Space Requirements ............. 17 4 Piping Diagrams ..................21 5 Wiring Diagrams ..................24 6 Electrical Characteristics ................26 7 Functional Components and Safety Devices ..........27 8 Capacity Tables ..................

  • Page 15: Specifications

    AMAZON UNITARIO FD 1 Specifications 8-12HP Table 2-1.1: 8-12HP specifications Model KMF-252 DN6 KMF-280 DN6 KMF-335 DN6 Power supply 380-415V, 3N~, 50Hz 25.2 33.5 Capacity kBtu/h 86.0 95.5 114.3 Cooling(T1) Power input 11.6 3.30 3.09 2.90 25.2 33.5 Capacity kBtu/h 86.0...
  • Page 16 AMAZON UNITARIO FD 14-16HP Table 2-1.1: 14-16HP specifications Model KMF-400 DN6 KMF-450 DN6 Power supply 380-415V, 3N~, 50Hz Capacity kBtu/h 136.5 153.5 Cooling(T1) Power input 15.7 16.0 2.54 2.82 Capacity kBtu/h 136.5 153.5 Heating (Rated) Power input 11.7 12.2 3.42 3.68...
  • Page 17 AMAZON UNITARIO FD 20-22HP Table 2-1.2: 20-22HP specifications Model KMF-560 DN6 KMF-615 DN6 Power supply 380-415V, 3N~, 50Hz 61.5 Capacity kBtu/h 191.1 209.8 Cooling(T1) Power input 22.9 30.8 2.45 2.00 61.5 Capacity kBtu/h 191.1 209.8 Heating (Rated) Power input 15.5 17.8...

  • Page 18: Dimensions

    AMAZON UNITARIO FD 2 Dimensions 2.1 Single Units 8/10/12/14HP Figure 2-2.1: 8/10/12/14 HP dimensions (unit: mm) 16/20/22HP Figure 2-2.2: 16/20/22HP dimensions (unit: mm) Detail R Figure 2-2.4: Detail R (unit: mm) Table 2-2.1: Connection piping diameter (unit: mm) Size ΦA(Liquid) ΦB(Gas)

  • Page 19: Installation Space Requirements

    AMAZON UNITARIO FD 3 Installation Space Requirements There are obstacles on the air inlet side but no obstacles on the air outlet side and above the outdoor unit Figure 2-3.1:One outdoor unit installation (unit: mm) Figure 2-3.2:More than one outdoor unit installation (unit: mm) There are obstacles on the air inlet side and above the outdoor unit but no obstacles on the air outlet side Figure 2-3.3:One outdoor unit installation (unit: mm)
  • Page 20 AMAZON UNITARIO FD There are obstacles on the air outlet side and above the outdoor unit but no obstacles on the air inlet side Figure 2-3.7:One outdoor unit installation (unit: mm) Figure 2-3.8:More than one outdoor unit installation (unit: mm) ≥300...
  • Page 21 AMAZON UNITARIO FD Table 2-3.1 Condition 0<L2<1/2H 1000 1500 L2≤H 1/2H≤L2≤H 1250 1750 L2>H Install air duct to exhaust the air out of the space. Figure 2-3.13:One outdoor unit installation (unit: mm) Figure 2-3.14:More than one outdoor unit installation (unit: mm) ≥300...
  • Page 22 AMAZON UNITARIO FD When outdoor units are installed in different rows on a rooftop Figure 2-3.17: One outdoor unit installation (unit: mm) Figure 2-3.18:More than one outdoor unit are installed in each row (unit: Notes: 1. H is the height of the outdoor unit.

  • Page 23: Piping Diagrams

    AMAZON UNITARIO FD 4 Piping Diagrams 8-14HP Figure 2-4.1: 8-14HP piping diagram EEVA E S C T7C1 EEVC INV1 Heat SV8A Legend Parts name Parts name Inverter Compressor Charge port Oil separator Low pressure sensor High pressure switch Gas-liquid separator...
  • Page 24 AMAZON UNITARIO FD 16-22HP Figure 2-4.2: 16-22HP piping diagram EEVA E S C T7C1 EEVC INV1 Heat SV8A Legend Parts name Parts name Inverter Compressor Charge port Oil separator Low pressure sensor High pressure switch Gas-liquid separator Check value Muffler...
  • Page 25 AMAZON UNITARIO FD Key components: 1. Oil separator: Separates oil from gas refrigerant pumped out of the compressor and quickly returns it to the compressor. Separation efficiency is up to 99%. 2. Gas-liquid separator: Separates liquid refrigerant from gas refrigerant, stores liquid refrigerant and oil to protect compressor from liquid hammering.

  • Page 26: Wiring Diagrams

    AMAZON UNITARIO FD 5 Wiring Diagrams...
  • Page 27 AMAZON UNITARIO FD Legend Code Name Code Name COMP Compressor Main exchanger pipe temperature sensor EEVA/EEVC Electronic expansion valve Outdoor ambient temperature sensor FAN A/ FAN B DC Fan Liquid pipe temperature sensor HEAT A Crankcase heater Microchannel heat exchanger inlet pipe temperature sensor...

  • Page 28: Electrical Characteristics

    AMAZON UNITARIO FD 6 Electrical Characteristics Table 2-6.1: Outdoor unit electrical characteristics Model Power Supply Compressor Min. Max. TOCA Power Capacity Volts (kW) volts volts 380-415 17.0 32.8 23.5 0.2+0.2 0.65+0.65 10HP 380-415 21.0 32.8 23.5 0.2+0.2 0.65+0.65 12HP 380-415 23.0...

  • Page 29: Functional Components And Safety Devices

    AMAZON UNITARIO FD 7 Functional Components and Safety Devices Table 2-7.1: 8/10/12/14/16/20/22/24HP functional components and safety devices Item 10HP 12HP 14HP 16HP 20HP 22HP Compressor top and discharge pipe 115°C = 5kΩ ± 3% temperature sensors Compressor Crankcase heater Inverter Inverter module temperature sensor 90°C = 5kΩ...

  • Page 30: Capacity Tables

    AMAZON UNITARIO FD 8 Capacity Tables 8.1 Cooling Capacity Tables Table2-8.1:8HP cooling capacity Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 22.68 2.53 25.20 2.78 30.24 3.25 32.76 3.49 35.28 3.74 40.32...
  • Page 31 AMAZON UNITARIO FD Table2-8.1:8HP cooling capacity (continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 19.19 2.24 21.32 2.46 25.59 2.87 27.72 3.09 29.85 3.30 34.12 3.69 38.38 4.16 19.19 2.24 21.32...
  • Page 32 AMAZON UNITARIO FD Table2-8.1:8HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 15.70 1.62 17.45 1.97 20.94 2.43 22.68 2.61 24.42 2.79 27.91 3.14 31.40 3.49 15.70 1.81 17.45 2.03...
  • Page 33 AMAZON UNITARIO FD Table2-8.1:8HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 12.21 1.25 13.57 1.42 16.28 1.84 17.64 2.06 19.00 2.20 21.71 2.47 24.42 2.78 12.21 1.37 13.57 1.59...
  • Page 34 AMAZON UNITARIO FD Table2-8.1:8HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 8.72 0.70 9.69 1.02 11.63 1.14 12.60 1.33 13.57 1.53 15.51 1.86 17.45 2.02 8.72 0.93 9.69 1.10...
  • Page 35 AMAZON UNITARIO FD Table2-8.2:10HP cooling capacity Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 25.40 2.93 28.22 3.19 33.87 3.76 36.69 4.04 39.51 4.32 45.16 5.00 46.67 5.80 25.40 2.95 28.22 3.20...
  • Page 36 AMAZON UNITARIO FD Table2-8.2:10HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 21.49 2.58 23.88 2.84 28.66 3.33 31.04 3.58 33.43 3.81 38.21 4.29 42.98 4.93 21.49 2.59 23.88 2.86...
  • Page 37 AMAZON UNITARIO FD Table2-8.2:10HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 17.45 2.18 19.38 2.40 23.26 2.80 25.20 3.01 27.14 3.22 31.02 3.63 34.89 4.04 17.45 2.18 19.38 2.40...
  • Page 38 AMAZON UNITARIO FD Table2-8.2:10HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 13.57 1.66 15.08 1.86 18.09 2.21 19.60 2.37 21.11 2.55 24.12 2.87 27.14 3.19 13.57 1.73 15.08 1.90...
  • Page 39 AMAZON UNITARIO FD Table2-8.2:10HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 9.69 1.12 10.77 1.27 12.92 1.57 14.00 1.78 15.08 1.87 17.23 2.09 19.38 2.33 9.69 1.22 10.77 1.39...
  • Page 40 AMAZON UNITARIO FD Table2-8.3:12HP cooling capacity Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 30.15 3.98 33.50 4.41 40.20 5.19 43.55 5.57 46.90 6.23 49.08 7.29 49.99 9.66 30.15 3.99 33.50 4.41...
  • Page 41 AMAZON UNITARIO FD Table2-8.3:12HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 25.51 3.53 28.35 3.85 34.02 4.55 36.85 4.90 39.68 5.25 45.35 6.07 46.99 7.19 25.51 3.55 28.35 3.88...
  • Page 42 AMAZON UNITARIO FD Table2-8.3:12HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 20.87 2.98 23.19 3.28 27.83 3.83 30.15 4.12 32.47 4.38 37.11 4.93 41.75 5.51 20.87 2.99 23.19 3.28...
  • Page 43 AMAZON UNITARIO FD Table2-8.3:12HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 16.23 2.24 18.04 2.58 21.65 3.02 23.45 3.25 25.25 3.47 28.86 3.93 32.47 4.40 16.23 2.35 18.04 2.59...
  • Page 44 AMAZON UNITARIO FD Table2-8.3:12HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 11.60 1.64 12.88 1.80 15.46 2.22 16.75 2.39 18.04 2.57 20.62 2.87 23.19 3.19 11.60 1.65 12.88 1.89...
  • Page 45 AMAZON UNITARIO FD Table2-8.4:14HP cooling capacity Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 36.00 3.45 40.00 3.90 48.00 5.49 52.00 7.20 56.00 7.51 58.13 7.55 59.47 7.57 36.00 3.55 40.00 4.02 48.00 6.53 52.00...
  • Page 46 AMAZON UNITARIO FD Table2-8.4:14HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 30.46 2.90 33.85 3.33 40.62 4.08 44.00 4.53 47.38 5.65 54.15 8.22 55.51 8.95 30.46 2.92 33.85 3.45 40.62 4.18 44.00...
  • Page 47 AMAZON UNITARIO FD Table2-8.4:14HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 24.92 3.12 27.69 3.43 33.23 4.06 36.00 4.34 38.77 4.66 44.31 5.47 49.85 6.37 24.92 3.13 27.69 3.45 33.23 4.06 36.00...
  • Page 48 AMAZON UNITARIO FD Table2-8.4:14HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 19.38 2.49 21.54 2.72 25.85 3.19 28.00 3.45 30.15 3.66 34.46 4.14 38.77 4.63 19.38 2.49 21.54 2.73 25.85 3.21 28.00...
  • Page 49 AMAZON UNITARIO FD Table2-8.4:14HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 22/15 23.3/16 25.8/18 27/19 28.2/20 30.7/22 32/24 air temp. (°C DB) 13.85 1.68 15.38 1.89 18.46 2.34 20.00 2.52 21.54 2.68 24.62 3.01 27.69 3.34 13.85 1.83 15.38 2.01...
  • Page 50 AMAZON UNITARIO FD Table2-8.5:16HP cooling capacity Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 40.50 4.30 45.00 4.79 54.00 5.93 58.50 6.58 63.00 7.26 72.00 9.47 74.12 11.20 40.50 4.33 45.00 4.89 54.00 6.06 58.50...
  • Page 51 AMAZON UNITARIO FD Table2-8.5:16HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 34.27 3.80 38.08 4.17 45.69 5.01 49.50 5.62 53.31 6.09 60.92 7.13 68.54 9.15 34.27 3.80 38.08 4.19 45.69 5.09 49.50...
  • Page 52 AMAZON UNITARIO FD Table2-8.5:16HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 28.04 3.19 31.15 3.50 37.38 4.13 40.50 4.47 43.62 4.80 49.85 5.65 56.08 6.59 28.04 3.19 31.15 3.52 37.38 4.14 40.50...
  • Page 53 AMAZON UNITARIO FD Table2-8.5:16HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 21.81 2.51 24.23 2.75 29.08 3.24 31.50 3.48 33.92 3.72 38.77 4.20 43.62 4.74 21.81 2.51 24.23 2.75 29.08 3.25 31.50...
  • Page 54 AMAZON UNITARIO FD Table2-8.5:16HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 15.58 1.80 17.31 2.00 20.77 2.30 22.50 2.47 24.23 2.69 27.69 3.02 31.15 3.39 15.58 1.81 17.31 2.00 20.77 2.36 22.50...
  • Page 55 AMAZON UNITARIO FD Table2-8.7:20HP cooling capacity Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 50.40 5.39 56.00 6.07 67.20 7.41 72.80 9.47 78.40 12.17 82.04 12.40 83.56 12.44 50.40 5.41 56.00 6.29 67.20 8.98 72.80...
  • Page 56 AMAZON UNITARIO FD Table2-8.7:20HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 42.65 4.61 47.38 5.07 56.86 6.34 61.60 6.97 66.34 7.54 75.82 12.60 78.56 14.19 42.65 4.63 47.38 5.18 56.86 6.57 61.60...
  • Page 57 AMAZON UNITARIO FD Table2-8.7:20HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 34.89 3.84 38.77 4.23 46.52 5.00 50.40 5.52 54.28 5.96 62.03 7.06 69.78 9.04 34.89 3.85 38.77 4.24 46.52 5.01 50.40...
  • Page 58 AMAZON UNITARIO FD Table2-8.7:20HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 27.14 3.00 30.15 3.31 36.18 3.90 39.20 4.21 42.22 4.50 48.25 5.14 54.28 5.95 27.14 3.04 30.15 3.32 36.18 3.92 39.20...
  • Page 59 AMAZON UNITARIO FD Table2-8.7:20HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 19.38 2.14 21.54 2.33 25.85 2.75 28.00 2.97 30.15 3.20 34.46 3.63 38.77 4.10 19.38 2.20 21.54 2.40 25.85 2.80 28.00...
  • Page 60 AMAZON UNITARIO FD Table2-8.8:22HP cooling capacity Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 55.35 6.80 61.50 7.56 73.80 10.80 79.95 15.11 86.10 17.55 88.75 17.80 90.63 18.20 55.35 6.89 61.50 7.75 73.80 12.79 79.95...
  • Page 61 AMAZON UNITARIO FD Table2-8.8:22HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 46.83 5.65 52.04 6.43 62.45 8.01 67.65 8.73 72.85 11.18 83.26 16.46 84.34 18.03 46.83 5.80 52.04 6.65 62.45 8.11 67.65...
  • Page 62 AMAZON UNITARIO FD Table2-8.8:22HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 38.32 4.73 42.58 5.23 51.09 6.36 55.35 6.96 59.61 7.66 68.12 8.96 76.64 14.29 38.32 4.75 42.58 5.23 51.09 6.38 55.35...
  • Page 63 AMAZON UNITARIO FD Table2-8.8:22HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 29.80 3.71 33.12 4.06 39.74 4.83 43.05 5.20 46.36 5.55 52.98 6.34 59.61 7.64 29.80 3.73 33.12 4.12 39.74 4.84 43.05...
  • Page 64 AMAZON UNITARIO FD Table2-8.8:22HP cooling capacity(continued) Indoor air temp. (°C DB/WB) Outdoor 23.3 25.8 28.2 30.7 air temp. (°C DB) 21.29 2.60 23.65 2.89 28.38 3.41 30.75 3.70 33.12 3.96 37.85 4.50 42.58 5.04 21.29 2.69 23.65 2.92 28.38 3.45 30.75...

  • Page 65: Heating Capacity Tables

    AMAZON UNITARIO FD 8.2 Heating Capacity Tables Table2-8.9:8HP heating capacity Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 17.30 7.72 17.22 8.00 17.15 8.29 17.12 8.44 17.09 8.60 17.04...
  • Page 66 AMAZON UNITARIO FD Table2-8.9:8HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 17.04 7.86 16.97 8.15 16.91 8.46 16.89 8.62 16.86 8.78 16.82 9.14 -25.0 -25.4 17.93...
  • Page 67 AMAZON UNITARIO FD Table2-8.9:8HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 16.89 8.29 16.84 8.60 16.79 8.94 16.71 9.15 16.70 9.85 16.70 11.32 -25.0 -25.4 17.77...
  • Page 68 AMAZON UNITARIO FD Table2-8.9:8HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 17.07 9.83 16.74 10.63 16.16 9.86 15.58 9.39 15.01 9.04 13.85 8.54 -25.0 -25.4 17.97...
  • Page 69 AMAZON UNITARIO FD Table2-8.9:8HP heating capacity(continued) Indoor air temp. °C DB Outdoor air 16.0 18.0 20.0 21.0 22.0 24.0 temp. °C DB °C WB -29.8 -30.0 13.19 7.97 12.37 7.64 11.54 7.28 11.13 7.06 10.72 6.83 9.89 6.36 -25.0 -25.4 13.89...
  • Page 70 AMAZON UNITARIO FD Table2-8.10:10HP heating capacity Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 19.23 8.20 19.17 8.51 19.12 8.84 19.10 9.02 19.08 9.20 19.05 9.57 -25.0 -25.4 20.25...
  • Page 71 AMAZON UNITARIO FD Table2-8.10:10HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 18.94 8.51 18.90 8.84 18.86 9.20 18.85 9.38 18.84 9.57 18.83 9.98 -25.0 -25.4 19.94...
  • Page 72 AMAZON UNITARIO FD Table2-8.10:10HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 18.70 9.03 18.68 9.40 18.64 9.94 18.61 10.56 18.59 11.36 18.55 12.36 -25.0 -25.4 19.68...
  • Page 73 AMAZON UNITARIO FD Table2-8.10:10HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 18.36 12.00 18.33 12.60 18.09 12.00 18.18 11.50 17.51 10.98 16.16 10.01 -25.0 -25.4 19.32...
  • Page 74 AMAZON UNITARIO FD Table2-8.10:10HP heating capacity(continued) Indoor air temp. °C DB Outdoor air 16.0 18.0 20.0 21.0 22.0 24.0 temp. °C DB °C WB -29.8 -30.0 15.39 9.33 14.43 8.86 13.47 8.41 12.99 8.15 12.50 7.89 11.54 7.34 -25.0 -25.4 16.20...
  • Page 75 AMAZON UNITARIO FD Table2-8.11:12HP heating capacity Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 19.53 7.57 19.42 7.86 19.33 8.16 19.28 8.32 19.24 8.48 19.16 8.82 -25.0 -25.4 20.55...
  • Page 76 AMAZON UNITARIO FD Table2-8.11:12HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 19.29 7.79 19.19 8.09 19.11 8.41 19.07 8.58 19.03 8.75 18.96 9.10 -25.0 -25.4 20.30...
  • Page 77 AMAZON UNITARIO FD Table2-8.11:12HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 18.78 2.20 18.69 2.29 18.61 2.40 18.58 2.45 18.55 2.50 18.49 2.62 -25.0 -25.4 19.77...
  • Page 78 AMAZON UNITARIO FD Table2-8.11:12HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 17.98 9.88 17.89 11.02 17.81 12.00 17.78 12.37 17.75 12.33 18.46 11.55 -25.0 -25.4 18.92...
  • Page 79 AMAZON UNITARIO FD Table2-8.11:12HP heating capacity(continued) Indoor air temp. °C DB Outdoor air 16.0 18.0 20.0 21.0 22.0 24.0 temp. °C DB °C WB -29.8 -30.0 18.32 10.96 17.18 10.14 16.03 9.35 15.46 8.96 14.89 8.61 13.74 7.96 -25.0 -25.4 19.29...
  • Page 80 AMAZON UNITARIO FD Table2-8.12:14HP heating capacity Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 20.61 8.58 20.49 8.91 20.39 9.24 20.33 9.42 20.28 9.60 20.19 9.98 -25.0 -25.4 21.69...
  • Page 81 AMAZON UNITARIO FD Table2-8.12:14HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 19.89 8.66 19.97 9.00 19.87 9.35 20.03 9.73 19.78 9.72 19.90 10.31 -25.0 -25.4 20.94...
  • Page 82 AMAZON UNITARIO FD Table2-8.12:14HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 19.50 9.17 19.40 9.52 19.31 9.89 19.26 10.08 19.09 10.28 19.02 10.70 -25.0 -25.4 20.52...
  • Page 83 AMAZON UNITARIO FD Table2-8.12:14HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 18.66 9.91 18.56 10.54 18.48 11.76 18.44 12.47 18.27 13.14 18.20 14.22 -25.0 -25.4 19.64...
  • Page 84 AMAZON UNITARIO FD Table2-8.12:14HP heating capacity(continued) Indoor air temp. °C DB Outdoor air 16.0 18.0 20.0 21.0 22.0 24.0 temp. °C DB °C WB -29.8 -30.0 17.86 14.09 17.77 13.87 17.68 13.02 17.64 12.45 17.48 11.90 16.49 10.81 -25.0 -25.4 18.80...
  • Page 85 AMAZON UNITARIO FD Table2-8.13:16HP heating capacity Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 24.41 9.04 24.27 9.40 24.15 9.77 24.09 9.97 24.03 10.17 23.92 10.59 -25.0 -25.4 25.69...
  • Page 86 AMAZON UNITARIO FD Table2-8.13:16HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 23.94 9.29 23.81 9.67 23.69 10.06 23.64 10.26 23.58 10.47 23.48 10.91 -25.0 -25.4 25.20...
  • Page 87 AMAZON UNITARIO FD Table2-8.13:16HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 23.29 9.67 23.17 10.06 23.06 10.49 23.01 10.71 22.97 10.93 22.88 11.42 -25.0 -25.4 24.51...
  • Page 88 AMAZON UNITARIO FD Table2-8.13:16HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 22.29 10.49 22.17 10.94 22.07 12.06 22.02 12.96 21.98 13.91 21.90 15.29 -25.0 -25.4 23.46...
  • Page 89 AMAZON UNITARIO FD Table2-8.13:16HP heating capacity(continued) Indoor air temp. °C DB Outdoor air 16.0 18.0 20.0 21.0 22.0 24.0 temp. °C DB °C WB -29.8 -30.0 21.33 15.35 21.22 14.20 21.12 12.98 20.61 12.37 19.85 11.78 18.32 10.67 -25.0 -25.4 22.45...
  • Page 90 AMAZON UNITARIO FD Table2-8.15:20HP heating capacity Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 29.98 11.14 29.81 11.60 29.64 12.08 29.55 12.33 29.47 12.59 29.33 13.13 -25.0 -25.4 31.56...
  • Page 91 AMAZON UNITARIO FD Table2-8.15:20HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 29.34 11.38 29.18 11.85 29.02 12.35 28.95 12.61 28.87 12.88 28.74 13.45 -25.0 -25.4 30.89...
  • Page 92 AMAZON UNITARIO FD Table2-8.15:20HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 28.48 12.40 28.33 12.92 28.18 13.47 28.11 13.75 28.04 14.05 27.92 14.67 -25.0 -25.4 29.98...
  • Page 93 AMAZON UNITARIO FD Table2-8.15:20HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 27.26 13.44 27.11 14.02 26.97 14.63 26.90 14.96 26.84 15.30 26.72 19.72 -25.0 -25.4 28.69...
  • Page 94 AMAZON UNITARIO FD Table2-8.15:20HP heating capacity(continued) Indoor air temp. °C DB Outdoor air 16.0 18.0 20.0 21.0 22.0 24.0 temp. °C DB °C WB -29.8 -30.0 26.09 13.55 25.94 13.71 26.93 15.79 25.97 15.10 25.01 14.00 23.09 13.10 -25.0 -25.4 27.46...
  • Page 95 AMAZON UNITARIO FD Table2-8.16:22HP heating capacity Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 31.21 11.84 31.03 12.32 30.85 12.83 30.77 13.09 30.68 13.36 30.52 13.92 -25.0 -25.4 32.86...
  • Page 96 AMAZON UNITARIO FD Table2-8.16:22HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 30.60 12.21 30.42 12.71 30.25 13.23 30.17 13.50 30.10 13.78 29.95 14.36 -25.0 -25.4 32.21...
  • Page 97 AMAZON UNITARIO FD Table2-8.16:22HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 29.72 12.79 29.55 13.32 29.39 13.89 29.31 14.18 29.24 14.48 29.11 15.12 -25.0 -25.4 31.28...
  • Page 98 AMAZON UNITARIO FD Table2-8.16:22HP heating capacity(continued) Indoor air temp. °C DB Outdoor air temp. 16.0 18.0 20.0 21.0 22.0 24.0 °C DB °C WB -29.8 -30.0 28.44 13.77 28.28 14.35 28.12 14.98 28.05 15.30 27.98 15.65 27.86 16.36 -25.0 -25.4 29.94...
  • Page 99 AMAZON UNITARIO FD Table2-8.16:22HP heating capacity(continued) Indoor air temp. °C DB Outdoor air 16.0 18.0 20.0 21.0 22.0 24.0 temp. °C DB °C WB -29.8 -30.0 27.22 16.32 27.06 19.66 29.50 18.95 28.44 17.92 27.39 17.08 25.28 15.34 -25.0 -25.4 28.65...
  • Page 100 AMAZON UNITARIO FD 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 Note: 1. The horizontal axis shows equivalent length of piping between farthest indoor unit and outdoor unit; the vertical axis shows the largest level difference between indoor unit and outdoor unit.
  • Page 101 AMAZON UNITARIO FD 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 102: Operating Limits

    AMAZON UNITARIO FD 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) 10 15 20 25 30 35 Indoor temperature (°C DB) Notes: 1. These figures assume the following operating conditions: ■...

  • Page 103: Sound Levels

    AMAZON UNITARIO FD 10 Sound Levels 10.1 Overall Table 2-10.1: Sound pressure level Model dB(A) 10HP 12HP 14HP 16HP 20HP 22HP Note: 1. Sound pressure level is measured at a position 1m in front of the unit and 1.3m 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 104 AMAZON UNITARIO FD 10.2 Octave Band Levels Figure 2-10.2: 8HP octave band level Figure 2-10.3: 10HP octave band level NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 500 1000 2000 4000 8000 1000 2000 4000 8000...
  • Page 105 AMAZON UNITARIO FD Figure 2-10.8: 20HP octave band level Figure 2-10.9: 22HP octave band level NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 500 1000 2000 4000 8000 500 1000 2000 4000 8000 Octave band center frequency (Hz)

  • Page 106: Standard Accessories

    AMAZON UNITARIO FD 11 Accessories 11.1 Standard Accessories Table 2-11.1: Standard accessories Name Shape Quantity Function owner's and installation manual S-shaped connection pipe To connect gas and liquid pipes Build-out resistor To improve communication stability Elbow To connect gas pipes...
  • Page 107 AMAZON UNITARIO FD Part 3 System Design and Installation 1 Preface to Part 3 ................... 106 2 Unit Placement and Installation ............107 3 Outdoor Unit Ducting and Shielding ............113 4 Refrigerant Piping Design ..............115 5 Refrigerant Piping Installation ............... 124 6 Drain Piping ..................

  • Page 108: Preface To Part 3

    The information contained in this Engineering Data Book may primarily be of use during the system design stage of a Kaysun Amazon unitario FD 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 109: Unit Placement And Installation

    AMAZON UNITARIO FD 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 110 AMAZON UNITARIO FD 2.1.3 Base structures Outdoor unit base structure design should take account of the following considerations: ■ The base of the outdoor unit must use the solid concrete surface as the cement base or the steel beam frame base.
  • Page 111 AMAZON UNITARIO FD 2.1.5 Hoisting Notes for installers ■ Do not remove any packaging before hoisting. If units are not packaged or if the packaging is damaged, use suitable boards or packing material to protect the units. ■ Hoist one unit at a time, using two ropes to ensure stability.

  • Page 112: Indoor Units

    AMAZON UNITARIO FD 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 113 AMAZON UNITARIO FD 3 Outdoor Unit Ducting and Shielding 3.1 Ducting Requirements Figures 2-3.1 to Figures 2-3.20 show spacing requirements in different scenarios. If the installation space requirement cannot be met due to special installation conditions, the air duct should be installed.

  • Page 114: Fan Performance

    AMAZON UNITARIO FD 3.3 Fan Performance Figure 3-3.2: 8HP units fan performance Figure 3-3.3: 10HP units fan performance 80Pa 80Pa 60Pa 60Pa 40Pa 40Pa 20Pa 20Pa 12500(rated) 11800(rated) 10000 11000 12000 13000 14000 15000 10000 11000 12000 13000 14000 Air flow (m³/h) Air flow (m³/h)

  • Page 115: Outdoor Unit Ducting And Shielding

    AMAZON UNITARIO FD Figure 3-3.8: 20HP units fan performance Figure 3-3.9: 22HP units fan performance 80Pa 80Pa 60Pa 60Pa 40Pa 40Pa 20Pa 20Pa 19000(rated) 18500(rated) 16000 17000 18000 19000 20000 21000 22000 1500016000 17000 18000 19000 200002100022000 Air flow (m³/h) Air flow (m³/h)

  • Page 116: Installation Direction

    AMAZON UNITARIO FD 3.5 Installation direction It is forbidden to install the outdoor unit horizontally along the base to avoid snow and ice accumulation that may hinder the drainage of the chassis. Figure 3-3.9: Installation direction with snow shield Snow drift...

  • Page 117: Refrigerant Piping Design

    AMAZON UNITARIO FD 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 3-4.1 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 118 AMAZON UNITARIO FD 4.3 Permitted Piping Lengths and Level Differences The piping length and level difference requirements that apply are summarized in Table 3-4.2 and are fully described as follows (refer to Figure 3-4.1): Figure 3-4.1: Permitted refrigerant piping lengths and level differences Branch joint Equivalent length of piping between farthest indoor unit and outdoor unit≤175m...
  • Page 119 AMAZON UNITARIO FD 1. Requirement 1: The piping between the farthest indoor unit (N14) and outdoor unit should not exceed 150m (actual length) and 175m (equivalent length). (The equivalent length of each branch joint is 0.5m, and the equivalent length of each branch header is 1m.)
  • Page 120 AMAZON UNITARIO FD 4.4 Selecting Piping Diameters Tables 3-4.6 to 3-4.8, below, specify the required pipe diameters for the indoor and outdoor piping. Figure 3-4.3: Selecting piping diameters Branch joint Equivalent length of piping between farthest indoor unit and outdoor unit≤175m Indoor unit Piping between farthest indoor unit and first indoor branch joint ≤...
  • Page 121 AMAZON UNITARIO FD 4.4.2 Diameters of Indoor main pipes and indoor branch joint kits Based on the total capacity of the indoor unit, select the branch joint for the indoor unit from the following table Table 3-4.7: Indoor main pipes (L2 to L11) and indoor branch joint kits...
  • Page 122 AMAZON UNITARIO FD 4.5 Refrigerant Piping Selection Example The example below illustrates the piping selection procedure for a system consisting of one outdoor unit (22HP) and 12 indoor units. The system's equivalent length between the farthest indoor unit and the outdoor unit is in excess of 90m;...
  • Page 123 AMAZON UNITARIO FD ■ The indoor units (N12 to N13) downstream of indoor branch joint H have total capacity of 2.8*2=5.6kW. Refer to Table 3-4.7. Indoor main pipe L8 is Φ15.9 / Φ 9.52. Indoor branch joint H is FQZHN-01D.
  • Page 124 AMAZON UNITARIO FD Table 3-4.9: Indoor branch joint dimensions (unit: mm) (continued) Model Gas side joints Liquid side joints FQZHN-02D FQZHN-03D FQZHN-04D FQZHN-05D FQZHN-06D FQZHN-07D...
  • Page 125 AMAZON UNITARIO FD 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 126: Refrigerant Piping Installation

    AMAZON UNITARIO FD 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 Gastightness Joint Pipe Vacuum drying insulation and installation...
  • Page 127 AMAZON UNITARIO FD 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 128 AMAZON UNITARIO FD 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 129 AMAZON UNITARIO FD 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 130 AMAZON UNITARIO FD 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 131 AMAZON UNITARIO FD ... 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 Brazing Brazing 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 132 AMAZON UNITARIO FD 5.6 Branch Joints 5.6.1 U-type branch joint 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 U-shaped branching pipe joints with tee joints.
  • Page 133 AMAZON UNITARIO FD 5.6.2 Branch header Notes for installers ■ The content in this section is only for attention during the installation of branch header. ■ Please refer to the installation manual of branch header for detailed selection and installation requirements.
  • Page 134 AMAZON UNITARIO FD 5.7 Direction of refrigerant pipe connection Field piping can be connected in 4 directions. Before connecting, knock off the plate in the corresponding direction. Figure 3-5.13: Direction of refrigerant pipe connection right-front panel right-rear panel right-front panel...
  • Page 135 AMAZON UNITARIO FD 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.

  • Page 136: Gastightness Test

    AMAZON UNITARIO FD 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 137: Vacuum Drying

    AMAZON UNITARIO FD 5.9.3 Leak detection Notes for installers To check for leaks: Vacuum leak test 1. Evacuate the system from the liquid and gas piping to –100.7 kPa (–1.007 bar)(5 Torr absolute) for more than 2 hours. 2. Once reached, turn off the vacuum pump and check that the pressure does not rise for at least 1 minute.
  • Page 138 AMAZON UNITARIO FD 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.

  • Page 139: Drain Piping

    AMAZON UNITARIO FD 6 Drain Piping 6.1 Design Considerations Drain piping design should take account of the following considerations: ■ Indoor unit condensate drain piping needs to be of sufficient diameter to carry the volume of condensate produced at the indoor units and installed at a slope sufficient to allow drainage. Discharge as close as possible to the indoor units is usually preferable.
  • Page 140 AMAZON UNITARIO FD Figure 3-6.5: 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. ■ Drain piping diameter should be not less than the indoor units’ drain piping connection.
  • Page 141 AMAZON UNITARIO FD Table 3-6.2: Vertical drain piping diameterst Nominal diameter PVC piping Capacity (L/h) Remarks (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 142: Insulation

    AMAZON UNITARIO FD 6.6 Watertightness Test and Water Flow Test Once installation of a drainage piping system is complete, 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.
  • Page 143 AMAZON UNITARIO FD 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 144: Charging Refrigerant

    AMAZON UNITARIO FD 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 145: Adding Refrigerant

    AMAZON UNITARIO FD 8.2 Adding Refrigerant Notes for installers Caution ■ Only charge refrigerant after performing a gastightness test and vacuum drying. ■ Never charge more refrigerant than required as doing so can lead to liquid hammering. ■ Only use refrigerant R410A - charging with an unsuitable substance may cause explosions or accidents.

  • Page 146: Electrical Wiring

    AMAZON UNITARIO FD 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 147: Power Supply Wiring

    AMAZON UNITARIO FD 9.2 Power Supply Wiring Power supply wiring design and installation should adhere to the following requirements: ■ Separate power supplies should be provided for the indoor units and outdoor units. ■ Where five or more outdoor units are installed, additional residual current protection (leakage protection) should be installed.

  • Page 148: Communication Wiring

    ■ When a single communication line is not long enough, the joint must be crimped or soldered, and the copper wire at the joint shall not be exposed. ■ Amazon unitario FD outdoor unit compatible with different generation indoor units, the communication connection type should follow table 3-9.1.
  • Page 149 AMAZON UNITARIO FD Figure 3-9.5: Communication wiring 9.3.1 Outdoor unit and indoor units’ P Q E communication 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 150 AMAZON UNITARIO FD 9.3.2 Outdoor unit and indoor units’ P Q communication Communication wiring design and installation should adhere to the following requirements: ■ 0.75mm two-core shielded cable should be used for communication wiring. Using other types of cable can lead to interference and malfunction.
  • Page 151 AMAZON UNITARIO FD 9.3.3 Outdoor unit and indoor units’ M1, M2 communication-IDUs unified power supplied Communication wiring design and installation should adhere to the following requirements when all IDUs unified power supplied: ■ 0.75mm two-core cable should be used for communication wiring when all the indoor units are unified power supplied.
  • Page 152 AMAZON UNITARIO FD Figure 3-9.10: M1 M2 communication wiring configuration – IDUs separate power supplied L1+La+Lx≤200m, L11+Lb+Ly≤200m, L21+Lc+L30≤200mm.Communication wiring 2*1.5mm Communication wire Master ODU Power wire Repeater 1 breaker Breaker T O D O W N ID U ··· (2-9)# IDU...
  • Page 153 AMAZON UNITARIO FD 9.3.5 Outdoor units’ XYE communication The outdoor unit’s combined system, and the communication lines between the ODUs must be connected in series. ■ 0.75mm two-core shielded cable should be used for communication wiring, and the length must not exceed 1200m.

  • Page 154: Installation In Areas Of High Salinity

    AMAZON UNITARIO FD 10 Installation in Areas of High Salinity 10.1 Caution Do not install outdoor units where they could be directly exposed to sea air. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.

  • Page 155: Commissioning

    AMAZON UNITARIO FD 11 Commissioning 11.1 Pre-commissioning Checks Before turning on the power to the indoor and outdoor units, ensure the following: ■ Installation Check if the unit is installed correctly to prevent strange noises and vibrations when the unit starts.
  • Page 156 AMAZON UNITARIO FD 11.2 Outdoor Unit Address and Communication Type Setting, Test Run Step 1: Power on Cover the lower panel of the ODU, and power on all IDUs and ODUs. Step 2: Enter commissioning mode When the ODU is first powered on, it displays "-. -. -. -.", which means the unit is not commissioned. Long press the “DOWN”...
  • Page 157 AMAZON UNITARIO FD Step 9: Other settings After completing the test run, you can set the relevant functions of the unit according to the actual functional requirements. For specific operations, please refer to related technical documents. If there is no special requirement, you can skip this step.

  • Page 158: Operating The System

    AMAZON UNITARIO FD 11.3 Troubleshooting during the Test Run. The test run is considered complete when there is no error code on the user interface or the outdoor unit display. When an error code is displayed, correct the operation based on the description in the error code table. Try to conduct the test run again to check that the exception has been corrected.

  • Page 159: Appendix To Part 3 - System Operating Report

    AMAZON UNITARIO FD 12 Appendix to Part 3 – System Operating Report A total of up to 11 report sheets should be completed for each system: ■ One Sheet A, one Sheet B and one Sheet C per system. ■ One Sheet D and one Sheet E per outdoor unit.
  • Page 160 AMAZON UNITARIO FD System Operating Report – Sheet A SYSTEM INFORMATION Project name and location Customer company System name Installation company Operating date Agent company Outdoor ambient temp. Commissioning engineer Model Serial no. Power supply (V) Outdoor unit information OUTDOOR UNITS...
  • Page 161 AMAZON UNITARIO FD System Operating Report – Sheet B SYSTEM INFORMATION Project name and location Customer company System name Installation company Operating date Agent company Outdoor ambient temp. Commissioning engineer Model Serial no. Power supply (V) Outdoor unit information OUTDOOR UNITS...
  • Page 162 AMAZON UNITARIO FD System Operating Report – Sheet C Project name and location System name RECORD OF ISSUES SEEN DURING OPERATING Serial no. of Description of observed issue Suspected cause Troubleshooting undertaken relevant unit OUTDOOR UNIT FINAL CHECKLIST System check performed?
  • Page 163 AMAZON UNITARIO FD System Operating Report – Sheet D Project name and location System name Observed values DSP1 Cooling Heating Parameters displayed on DSP2 Remarks content mode mode --.-- "Standby (ODU address+ IDU number)/frequency/special status" 0 (The default) 255 represents invalid 0.--...
  • Page 164 AMAZON UNITARIO FD System Operating Report – Sheet E Project name and location System name … table continued from previous page Observed values DSP1 Cooling Heating Parameters displayed on DSP2 Remarks content mode mode 34.-- EEVE position Actual value = value displayed × 4 35.--...
  • Page 165 Ver. 2023-12...

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