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SystemAir Mini C Series Manual
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SystemAir Mini C Series Manual

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Summary of Contents for SystemAir Mini C Series

  • Page 2 ......................................
  • Page 3 ..............................................................................
  • Page 4 Capacity (kW) Model Name...
  • Page 8 Outdoor unit capacity Sum of capacity indexes of Maximum number of Capacity connected indoor units (standard connected indoor indoor units only) units index 40 to 104 60 to 156...
  • Page 10 Indoor...
  • Page 11 °C °C °C °C °C °C °C °C °C °C °C °C °C °C Outdoor unit capacity Sum of capacity indexes of Capacity connected indoor units (standard indoor units only) index...
  • Page 12 Indoor air temp. Indoor air temp. Outdoor Outdoor (°C DB / °C WB) (°C DB / °C WB) 25.8 / 18.0 25.8 / 18.0 temp. temp. (°C DB) (°C DB) 120% 120% 10.4 2.48 110% 110% 10.2 2.46...
  • Page 13 Indoor air temp. Indoor air temp. Outdoor Outdoor (°C DB / °C WB) (°C DB / °C WB) 25.8 / 18.0 25.8 / 18.0 temp. temp. (°C DB) (°C DB) 100% 100% 11.2 2.76 10.1 2.37...
  • Page 15 Sale Model Power supply V-Ph-Hz 220-240V~50Hz 220-240V~50Hz Capacity Cooling Input kW/ KW Capacity Heating Input kW/ kW Model KTM240D57UMT ATF400D64UMT Type Rotary Rotary Brand Capacity Btu/h 26349 41957 Compressor Input 2085 3365 Rated current(RLA) 9.45 Crankcase RB74AF RB74AF Refrigerant oil 670ml+0ml 1000ml+200ml Model...
  • Page 16 wire x 0.75 wire x 0.75 Ambient temp Cooling: -5 55, Heating: -15 27...
  • Page 21 Mini C Series VRF 50Hz 5 Wiring Diagrams Figure 2 5.1: 80 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...
  • Page 22 Mini C Series VRF 50Hz Figure 2 5.2: 100/120 model wiring diagram Yellow/Green Orange Blue Green Green Yellow/Green ODU power supply Centralized Ammeter controller or communication gateway Please use 3-core shielded cable, and the shield layer must be grounded Component code...

  • Page 23: Electrical Characteristics

    Mini C Series VRF 50Hz 6 Electrical Characteristics Table 2 6.1: Outdoor unit electrical characteristics Power Supply Compressor Model Min. Max. Volts TOCA volts volts 50Hz 220 240 21.25 18.1A Soft start 9.45 0.08 50Hz 220 240 Soft start 15.5 0.17...
  • Page 24 Table 2 7.1: cooling capacity Indoor temperature(°C DB/WD) 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) 0.89 1.09 1.17 1.21 1.25 1.36 10.0 1.37 0.89 1.11 1.17 1.22 1.25 1.37 10.0 1.38 0.91 1.13 1.21 1.29 1.32...
  • Page 25 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.86 1.04 1.23 1.34 1.40 1.45 1.48 0.87 1.05 1.25 1.35 1.42 1.46 1.49 0.88 1.06 1.26 1.36 1.43 1.47...
  • Page 26 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.75 0.94 1.12 1.20 1.29 1.34 1.38 0.77 0.95 1.13 1.21 1.30 1.35 1.39 0.77 0.95 1.13 1.22 1.31 1.37...
  • Page 27 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.68 0.82 0.98 1.05 1.14 1.30 1.36 0.69 0.83 0.99 1.07 1.16 1.31 1.36 0.70 0.84 1.00 1.08 1.17 1.34...
  • Page 28 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.61 0.73 0.86 0.94 0.99 1.14 1.31 0.61 0.73 0.87 0.95 1.01 1.15 1.32 0.62 0.74 0.88 0.96 1.02 1.17...
  • Page 29 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.53 0.63 0.75 0.79 0.86 0.99 1.13 0.54 0.64 0.75 0.81 0.86 1.00 1.14 0.55 0.65 0.76 0.82 0.88 1.01...
  • Page 30 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.48 0.56 0.63 0.68 0.72 0.83 0.95 0.48 0.56 0.64 0.69 0.74 0.84 0.97 0.48 0.57 0.65 0.70 0.75 0.86...
  • Page 31 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.41 0.47 0.55 0.58 0.63 0.71 0.81 0.41 0.48 0.56 0.59 0.64 0.72 0.82 0.41 0.48 0.57 0.60 0.65 0.73...
  • Page 32 Table 2 7.1: cooling capacity (continued) Indoor temperature(°C DB/WD) Combinatio DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 Outdoor n (%) temperatur (Capacity e (°C DB) index) 0.35 0.41 0.47 0.49 0.52 0.59 0.63 0.36 0.42 0.47 0.50 0.53 0.60 0.64 0.36 0.42 0.48...
  • Page 33 Table 2 7.3: cooling capacity Indoor temperature(°C DB/WD) 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) 10.7 1.77 12.8 2.16 14.8 2.31 15.4 2.40 16.1 2.47 16.5 2.69 16.9 2.71 10.7 1.77 12.8 2.20 14.8 2.31 15.4...
  • Page 34 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 1.71 11.8 2.07 13.7 2.44 14.6 2.66 15.3 2.78 15.7 2.87 16.0 2.94 1.72 11.8 2.09 13.7 2.47 14.6 2.68...
  • Page 35 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 1.49 10.8 1.85 12.5 2.21 13.4 2.37 14.3 2.56 15.4 2.65 15.7 2.74 1.52 10.8 1.88 12.5 2.23 13.4 2.40...
  • Page 36 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 1.36 1.63 11.4 1.94 12.2 2.08 13.0 2.26 14.6 2.57 15.4 2.69 1.37 1.65 11.4 1.97 12.2 2.12 13.0 2.29...
  • Page 37 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 1.20 1.44 10.3 1.70 11.0 1.85 11.7 1.97 13.1 2.27 14.6 2.60 1.21 1.45 10.3 1.72 11.0 1.88 11.7 1.99...
  • Page 38 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 1.06 1.25 1.48 1.57 10.4 1.69 11.7 1.96 12.9 2.24 1.07 1.27 1.49 1.60 10.4 1.71 11.7 1.98 12.9 2.26...
  • Page 39 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.94 1.11 1.25 1.34 1.43 10.2 1.64 11.3 1.89 0.95 1.11 1.26 1.37 1.46 10.2 1.67 11.3 1.91 0.96 1.13...
  • Page 40 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.80 0.93 1.09 1.16 1.25 1.41 1.61 0.81 0.95 1.11 1.18 1.26 1.43 1.62 0.82 0.96 1.12 1.19 1.29 1.45...
  • Page 41 Table 2 7.3: cooling capacity (continued) Indoor temperature(°C DB/WD) 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) 0.70 0.81 0.93 0.97 1.03 1.17 1.26 0.70 0.82 0.94 0.99 1.04 1.18 1.27 0.72 0.84 0.96 1.00 1.06 1.20...
  • Page 42 Table 2 7.6: heating capacity Indoor temperature(°C WD) Outdoor temperature 16.00 18.00 20.00 21.00 22.00 24.00 Combination (%) (°C DB) (Capacity index) °C DB °C WB -13.7 6.13 1.65 6.11 1.69 6.09 1.76 6.09 1.81 6.06 1.86 6.04 1.88 -11.8 6.22 1.68 6.20...
  • Page 43 Table 2 7.6: heating capacity (continued) Indoor temperature(°C WD) Outdoor Combination (%) Temperature 16.00 18.00 20.00 21.00 22.00 24.00 (Capacity index) (°C DB) °C DB °C WB -13.7 6.10 1.82 6.08 1.86 6.06 1.90 6.06 1.86 6.06 1.89 6.03 1.94 -11.8 6.19 1.85...
  • Page 44 Table 2 7.6: heating capacity (continued) Indoor temperature(°C WD) Outdoor Temperature 16.00 18.00 20.00 21.00 22.00 24.00 Combination (%) (°C DB) (Capacity index) °C DB °C WB -13.7 6.06 2.21 6.03 2.23 6.03 2.25 6.01 2.26 5.99 2.17 5.49 1.95 -11.8 6.15 2.21...
  • Page 45 Table 2 7.6: heating capacity (continued) Indoor temperature(°C WD) Outdoor Combination (%) Temperature 16.00 18.00 20.00 21.00 22.00 24.00 (Capacity index) (°C DB) °C DB °C WB -13.7 5.81 2.10 5.42 1.93 5.05 1.90 4.85 1.86 4.66 1.83 4.27 1.76 -11.8 5.81 2.05...
  • Page 46 Table 2 7.6: heating capacity (continued) Indoor temperature(°C WD) Outdoor Temperature 16.00 18.00 20.00 21.00 22.00 24.00 Combination (%) (°C DB) (Capacity index) °C DB °C WB -13.7 4.16 1.54 3.89 1.46 3.61 1.41 3.45 1.35 3.31 1.31 3.04 1.20 -11.8 4.16 1.49...
  • Page 47 Table 2 7.8: heating capacity 16.00 18.00 20.00 21.00 22.00 24.00 Combination (%) (Capacity index) °C DB °C WB -13.7 11.92 2.87 11.88 2.95 11.83 3.07 11.83 3.15 11.79 3.23 11.75 3.28 -11.8 12.10 2.92 12.06 3.00 12.01 3.13 12.01 3.21 11.97 3.29...
  • Page 48 Table 2 7.8: heating capacity (continued) Combination (%) 16.00 18.00 20.00 21.00 22.00 24.00 (Capacity index) °C DB °C WB -13.7 11.87 3.18 11.82 3.25 11.78 3.32 11.78 3.24 11.78 3.30 11.73 3.38 -11.8 12.04 3.22 12.00 3.29 12.00 3.36 11.96 3.27 11.96...
  • Page 49 Table 2 7.8: heating capacity (continued) 16.00 18.00 20.00 21.00 22.00 24.00 Combination (%) (Capacity index) °C DB °C WB -13.7 11.78 3.84 11.73 3.88 11.73 3.92 11.69 3.94 11.64 3.78 10.67 3.40 -11.8 11.96 3.85 11.91 3.89 11.91 3.93 11.87 3.89 11.64...
  • Page 50 Table 2 7.8: heating capacity (continued) Combination (%) 16.00 18.00 20.00 21.00 22.00 24.00 (Capacity index) °C DB °C WB -13.7 11.29 3.65 10.53 3.36 9.82 3.31 9.42 3.24 9.07 3.19 8.31 3.06 -11.8 11.29 3.58 10.53 3.30 9.82 3.25 9.42 3.18 9.07...
  • Page 51 Table 2 7.8: heating capacity (continued) 16.00 18.00 20.00 21.00 22.00 24.00 Combination (%) (Capacity index) °C DB °C WB -13.7 8.09 2.69 7.56 2.55 7.02 2.45 6.71 2.35 6.44 2.27 5.91 2.10 -11.8 8.09 2.59 7.56 2.46 7.02 2.35 6.71 2.27 6.44...
  • Page 52 Figure 2 7.1: 80 model rate of change in cooling capacity Figure 2 7.2: 80 model rate of change in heating capacity Figure 2 7.3: 100 120 model rate of change in cooling capacity Figure 2 7.4: 100 120 model rate of change in heating capacity Notes: The horizontal axis shows equivalent length of piping between farthest indoor unit and first outdoor branch joint;...
  • Page 53 Figure 2 8.1: Operating limits Table 2 8.1: Operating limits Notes: 1. If the unit is running outside the above condition, protective device will start, and even then the units take place abnormality running. 2. These figures base on the operation conditions between indoor units and outdoor units: Equivalent pipe length is 5m, and height difference is 0m. Precaution: 1.
  • Page 54 Table 2 9.1: Sound pressure level 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. Figure 2 9.1: Sound pressure level measurement (unit: m) Figure 2 9.2 80 model octave band level Figure 2 9.4 140 model octave band level...
  • Page 55 Figure 2 9.4 120 model octave band level Table 2 10.1: Standard accessories Outdoor unit installation manual Outdoor unit owner’s manual Water outlet connection pipe Network Matching Wires Rubber wire ring Seal ring (80 models) L shape pipe (Applicable to 140 models) Connecting pipe (Applicable to 160 models)
  • Page 56 ..........................................................................................................................................................
  • Page 57 Notes for installers boxes contain important information which may primarily be of use during field installation, rather than during desk-based system design.
  • Page 58 2.1.1 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. nditioners should not be installed in locations where exposure to oil or to corrosive or harmful gases, such as acidic or alkaline gases, may occur.
  • Page 59 2.1.3 Outdoor unit base structure design should take account of the following considerations: prevents Outdoor unit bases should be constructed on solid ground or on structures weight. Bases should be at least 200mm high to provide sufficient access for installation of piping. typical concrete specification is 1 part cement, 2 parts sand and 6 parts crushed stone To ensure that all contact points are equally secure, bases should be completely level.
  • Page 60 2.1.5 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. Check that the model, specifications and quantity of the units delivered are as ordered. Check that all accessories ordered have been included.
  • Page 61 2.2.1 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 62 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 ) the system should, as far as possible, be equal in terms of number of units, total capacities and total piping lengths.
  • Page 63 Figure 3-3.2: The second connecting method ---- ---- ---- Outdoor unit model Maximum number of connected indoor units Connectable indoor unit capacity range 40 to 104 60 to 156...
  • Page 64 Figure 3-3.3: Selecting piping diameters...
  • Page 65 Figure 3-3.4: Refrigerant piping selection example Indoor units N1~ N5 are of capacity 2.8kW, N6 is 2.2kW. Refer to Table 3-3.6. Indoor auxiliary pipe a, b, c, d, e, f is Branch joint design should take account of the following: To ensure even of refrigerant...
  • Page 66 Table 3-3.8: Indoor branch joint dimensions (unit: mm) 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 68 4.1.1 Pipe flushing should be performed once the brazed connections have been completed with the exception of the final connections to the indoor units. That is, flushing should be performed once the outdoor unit have been connected but before the indoor units are connected. 4.1.2 Vacuum drying Pipe...
  • Page 69 4.2.1 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 connected.
  • Page 70 4.3.3 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. Ensure that the section of piping is smooth and even. Remove any burrs that remain after cutting. 4.3.4 Flared joints should be used where a screw thread connection is required.
  • Page 71 4.3.5 Table 3-4.2: Refrigerant piping support spacings When the air conditioner is running, the refrigerant piping will deform Interval between support points (m) (shrink, expand, droop). To avoid damage to piping, hangers or Pipe (mm) Horizontal Piping Vertical Piping supports should be spaced as per the criteria in the Table 3-4.2. In <...
  • Page 72 Warning Never flow oxygen through piping as doing so aids oxidation and could easily lead to explosion and as such is extremely dangerous. Take appropriate safety precautions such as having a fire extinguisher to hand whilst brazing. Flowing nitrogen during brazing Use a pressure reducing valve to flow nitrogen through copper piping at 0.02-0.03MPa during brazing.
  • Page 73 box continued from previous page Piping orientation during brazing Brazing should be conducted downwards or horizontally to avoid filler leakage. Piping overlap during brazing Filler...
  • Page 74 Figure 3-4.8: Branch joint orientation To ensure even of refrigerant 4.7.1 To remove dust, other particles and moisture, which could cause compressor malfunction if not flushed out before the system is run, the refrigerant piping should be flushed using nitrogen. As described in Part 3, 4.1.1 Installation procedure , pipe flushing should be performed once the piping connections have been completed with the exception of the final connections to the indoor units.
  • Page 75 4.7.2 Only use nitrogen for flushing. Using carbon dioxide risks leaving condensation in the piping. Procedure - - - - -...
  • Page 76 4.8.1 faults 4.8.2...
  • Page 77 4.8.3 4.9.1...
  • Page 78 4.9.2 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. Using a vacuum pump with a discharge in excess of 4L/s and a precision level of 0.02mmHg is recommended.
  • Page 79 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 80 installed too close to indoor unit lift pumps. 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 ing connection. To allow inspection and maintenance, the piping clamps shipped with units should be used to attach drain piping to indoor units adhesive should not be used.
  • Page 81 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 Drain piping for units with lift pumps should take account of the following additional considerations: A downward sloping section should immediately follow the vertically rising section adjacent to the unit, otherwise a water pump error will occur.
  • Page 82 Once installation of a drainage piping system is compete, water tightness and water flow tests should be performed. Water tightness test Fill the piping with water and test for leakages over a 24-hour period. Water flow test (natural drainage test) Slowly fill the drainage pan of each indoor unit with at least 600ml of water through the inspection port and check that the water is discharged through the outlet of the drain piping.
  • Page 83 6.1.1 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. During heating, the gas pipe temperature can rise to as high as 100°C. Insulation serves as necessary protection from burns.
  • Page 84 Figure 3-6.1: Installation of joint insulation (unit: mm) 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. Use suitable adhesive to seal seams and joints in the insulation and then bind with cloth reinforced tape of width not less than 50mm.
  • Page 85 6.35 9.53 12.7 15.9 Only charge refrigerant after performing a gas tightness 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. Use tools and equipment designed for use with R410A to ensure required pressure resistance and to prevent foreign materials from entering the system.
  • Page 86 box continued from previous page Pressure gauge...
  • Page 87 Caution All installation and wiring must be carried out by and in accordance with all applicable legislation. Electrical systems should be grounded in accordance with all applicable legislation. Overcurrent circuit breakers and residual-current circuit breakers (ground fault circuit interrupters) should be used in accordance with all applicable legislation.
  • Page 88 r communication wiring. Using other types of cable can lead to interference and malfunction. Indoor communication wiring: The P Q E communication wires should be connected one unit after another in a daisy chain from the outdoor unit to the final indoor unit. At the final indoor unit, a 120 resistor should be connected between the P and Q terminals.
  • Page 89 Mini C Series VRF 50Hz 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.
  • Page 91 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 92 Once all the pre-commissioning checks in Part 3, 10.2 Pre-commissioning Checks have been completed, a test run should be performed as described below and a Mini C 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 93 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 95: System Information

    SYSTEM INFORMATION Project name and location Customer company System name Installation company Commissioning date Agent company Outdoor ambient temp. Commissioning engineer Model Serial no. Power supply (V) Outdoor unit information INDOOR UNITS Room Set temp. Inlet temp. Outlet temp. Drainage Abnormal noise/ Model Address...
  • Page 96 SYSTEM INFORMATION Project name and location Customer company System name Installation company Commissioning date Agent company Outdoor ambient temp. Commissioning engineer Model Serial no. Power supply (V) Outdoor unit information INDOOR UNITS Room Set temp. Inlet temp. Outlet temp. Drainage Abnormal noise/ Model Address...
  • Page 97 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 Any abnormal noise? Any abnormal vibration? Fan rotation normal? Commissioning engineer Dealer representative Name:...
  • Page 98 Project name and location System name...

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