General Assist Technical Reference
ARTG18LLTA System Specifications
Indoor ARTG18LLTA with outdoor AOTG18LACC
Capacity, electrical data, airflow, sound levels, dimensions, refrigerant and piping limits
The ARTG18LLTA slim ducted indoor unit and AOTG18LACC outdoor unit operate as a matched single-phase inverter heat-pump system.
1. Quick answer
| Indoor unit | ARTG18LLTA |
| Outdoor unit | AOTG18LACC |
| Power supply | Single phase, 240 V, 50 Hz |
| Rated cooling capacity | 5.20 kW |
| Rated heating capacity | 6.00 kW |
| EER / COP | 3.59 / 3.85 kW/kW |
| Refrigerant | R410A, factory charge 1,650 g |
| Maximum pipe length / height | 30 m / 20 m |
2. Model mapping and electrical specifications
| Item | Specification |
|---|---|
| Matched indoor unit | ARTG18LLTA |
| Matched outdoor unit | AOTG18LACC |
| Power supply | 240 V AC, single phase, 50 Hz |
| Available voltage range | 198-264 V |
| Maximum operating current | Cooling 9.6 A; heating 13.1 A |
| Starting current | 7.0 A |
| Technical-manual sample circuit breaker | 25 A |
Electrical wiring, cable sizing and circuit protection must comply with the applicable local standards and installation requirements. The values above are technical-manual reference data, not a substitute for site-specific electrical design.
3. Rated performance
| Specification | Cooling | Heating |
|---|---|---|
| Rated capacity | 5.20 kW | 6.00 kW |
| Capacity range | 0.90-5.90 kW | 0.90-7.50 kW |
| Rated input power | 1.45 kW | 1.56 kW |
| Maximum input power | 1.61 kW | 2.31 kW |
| Rated operating current | 6.1 A | 6.6 A |
| Efficiency | EER 3.59 kW/kW | COP 3.85 kW/kW |
| Moisture removal | 2.0 L/h | - |
4. Fan, airflow and sound levels
Indoor airflow - ARTG18LLTA
| Fan speed | m³/h | L/s | CFM |
|---|---|---|---|
| High | 940 | 261 | 553 |
| Medium | 880 | 244 | 518 |
| Low | 820 | 227 | 483 |
| Quiet | 750 | 208 | 441 |
| Sound pressure level | Cooling | Heating |
|---|---|---|
| Indoor - High | 32 dB(A) | 32 dB(A) |
| Indoor - Quiet | 27 dB(A) | 27 dB(A) |
| Outdoor | 55 dB(A) | 56 dB(A) |
| Outdoor fan data | Cooling | Heating |
|---|---|---|
| Airflow | 2,460 m³/h | 2,460 m³/h |
| Fan speed | 1,100 rpm | 1,100 rpm |
Sound values are measured in the manufacturer's anechoic chamber. Actual site readings may be higher because of the installation environment, ductwork, reflective surfaces and background noise.
5. Dimensions and weight
| Unit | Net dimensions H × W × D | Shipping dimensions H × W × D | Weight |
|---|---|---|---|
| ARTG18LLTA indoor | 198 × 900 × 620 mm | 276 × 1,168 × 772 mm | 23 kg net / 27 kg gross |
| AOTG18LACC outdoor | 620 × 790 × 290 mm | 713 × 945 × 395 mm | 41 kg net / 44 kg gross |
6. Compressor, refrigerant and piping
| Item | Specification |
|---|---|
| Compressor | Twin rotary × 1, motor output 1,100 W |
| Refrigerant | R410A |
| Factory charge | 1,650 g, covering total pipe length up to 15 m |
| Additional charge | 20 g/m over 15 m: 100 g at 20 m, 200 g at 25 m and 300 g at 30 m |
| Refrigerant oil | POE (RB68) |
| Liquid pipe | Ø6.35 mm (1/4 in.) flare |
| Gas pipe | Ø12.70 mm (1/2 in.) flare |
| Maximum pipe length | 30 m |
| Maximum height difference | 20 m |
7. Operating range
| Condition | Range |
|---|---|
| Outdoor cooling | -10°C to 46°C |
| Outdoor heating | -15°C to 24°C |
| Indoor cooling | 18°C to 32°C, 80% RH or less |
| Indoor heating | 16°C to 30°C |
8. Direct answers to common questions
| Q | What is the cooling capacity? 5.20 kW rated. |
| Q | What is the heating capacity? 6.00 kW rated. |
| Q | What are the EER and COP? EER 3.59 and COP 3.85 kW/kW. |
| Q | Does the system support a 30 m pipe run? Yes. The maximum total pipe length is 30 m, with 20 g/m additional R410A required above 15 m. |
| Q | What is the maximum height difference? 20 m. |
| Q | What is the indoor airflow range? 750-940 m³/h across Quiet to High fan speed. |
| Q | What are the indoor and outdoor sound levels? Indoor: 27 dB(A) Quiet and 32 dB(A) High. Outdoor: 55 dB(A) cooling and 56 dB(A) heating. |
Important: Rated values are based on the manufacturer's standard test conditions, including a 7.5 m pipe length, zero height difference and 25 Pa standard static pressure. Actual performance varies with indoor and outdoor temperatures, airflow, external static pressure, pipe length and installation quality.
Source: Fujitsu General Design & Technical Manual DTR_AR057E_02 / DTR_AO124E_02, dated 30 September 2014, covering ARTG09LLLB / ARTG12LLLB / ARTG18LLTA and AOTG18LACC / AOTG24LATC.