This document covers the specifications for the indoor model ARTH45KHTA and the outdoor model AOTH45KBTA. The indoor system power supply is 220–240 V, 50 Hz (available voltage range 198–264 V) and the indoor unit is supplied 220–240 V from the outdoor unit.
Indoor unit (ARTH45KHTA): Rated cooling capacity is 12.5 kW (42,700 Btu/h) with min–max 5.6–14.5 kW (19,100–49,500 Btu/h), and rated heating capacity is 15.0 kW (47,800 Btu/h) with min–max 5.2–17.0 kW (17,700–58,000 Btu/h). Rated input power is 3.43 kW (cooling) and 3.49 kW (heating), with maximum input power 4.39 kW (cooling) and 4.46 kW (heating). Rated current is 15.1 A (cooling) and 15.3 A (heating). Efficiency is EER 3.64 kW/kW and COP 4.30 kW/kW. Seasonal performance is TCSPF 4.928 (Hot), 5.083 (Average), 5.465 (Cool) and HSPF 4.784 (Hot), 4.410 (Average), 3.901 (Cool). Sensible cooling capacity is 11.89 kW. Power factor is 99.0% (cooling) and 99.1% (heating). Moisture removal is 0.9 L/h (1.6 pints/h), and maximum operating current is 28.5 A. Airflow (Sirocco fan ×2, motor output 197 W, static pressure 60–260 Pa) is 903/767/631 L/s (3,250/2,760/2,270 m³/h) for High/Med/Low in both cooling and heating. Sound pressure is 43/39/35 dB(A) (cooling High/Med/Low) and 43/39/35 dB(A) (heating High/Med/Low), with sound power 65 dB(A) (cooling High). Net/gross dimensions are 425 × 1,250 × 490 mm / 490 × 1,440 × 655 mm, weight 53 kg net / 61 kg gross, piping Ø9.52 liquid / Ø15.88 gas (flare), drain hose PVC (Ø25 I.D., Ø32 O.D.), operation range 18–32°C (cooling, 80%RH or less) and 16–30°C (heating), remote controller wired, IP rating IPX0.
Outdoor unit (AOTH45KBTA): Power supply is 220–240 V ~ 50 Hz (available voltage range 198–284 V) with starting current 16.8 A. Airflow is 1,236 L/s (4,450 m³/h) for both cooling and heating (propeller fan ×1) with 120 W motor output. Sound power is 71 dB(A). Heat exchanger includes Main 1: 968 × 905 × 18.19 mm, Main 2: 968 × 905 × 18.19 mm, and Sub 1: 543 × 543 × 18.19 mm, with fin pitch 1.45, rows × stages 1 × 46, copper tube, aluminium, blue fin. Compressor is DC twin rotary, motor output 2,180 W. Refrigerant is R32, charge 2,700 g, oil type RmM68AF, amount 800 cm³. Enclosure is steel sheet, beige (approx. Munsell 10YR 7.5/1.0). Dimensions are 998 × 940 × 320 mm (net) and 1,176 × 1,027 × 445 mm (gross), weight 67 kg net / 76 kg gross, piping Ø9.52 liquid / Ø15.88 gas (flare), pre-charge length 30 m, max length 50 m, max height difference 30 m, operation range -10 to 50°C (cooling) and -15 to 24°C (heating), drain hose LDPE (Ø13.0 I.D., Ø16.0–Ø16.7 O.D.), and IP rating IPX4.
Electrical characteristics (AOTH45KBTA): Power supply 220–240 V, 50 Hz, maximum operating current 28.5 A, starting current 16.8 A, recommended circuit breaker 32 A, power cable 4.0 mm², connection cable 1.5 mm², and limited wiring length 51 m.
Safety devices (AOTH45KBTA): Circuit protection current fuses are 250 V, 30 A or 35.5 A, 250 V, 3.15 A, and 250 V, 10 A ×2. Fan motor thermal protection activates at 150 ±15°C (fan motor stop) and resets at 120 ±15°C (fan motor restart). Compressor discharge temperature protection activates at 110°C (compressor stop) and resets after 7 minutes (compressor restart). Compressor temperature protection activates at 108°C (compressor stop) and resets at 80°C or less (compressor restart). Outdoor temperature protection (COOL/DRY only) activates at -20°C (compressor stop) and resets at -15°C (compressor restart).