General Assist Technical Reference

ARTG12LLLB & AOTG12LBCA / AOTG12LBCB

Matched ducted system technical specifications
Indoor unit: ARTG12LLLB  |  Outdoor units: AOTG12LBCA or AOTG12LBCB  |  Refrigerant: R410A
This article provides the principal performance, electrical, dimensional, airflow, noise and refrigerant specifications for the ARTG12LLLB indoor unit and its matched AOTG12LBCA or AOTG12LBCB outdoor unit.

1. Quick answer

Indoor unit modelARTG12LLLB
Outdoor unit modelAOTG12LBCA or AOTG12LBCB
Matched systemYes
Power supplySingle phase, 240 V, 50 Hz
Cooling capacity3.50 kW
Heating capacity4.50 kW
EER / COP3.72 / 3.78 kW/kW
RefrigerantR410A
Maximum pipe length / height20 m / 15 m

2. Electrical and performance specifications

Electrical supply

ItemSpecification
Supply240 V, single phase, 50 Hz
Available voltage range198–264 V
Maximum operating current10.9 A
Starting current5.3 A
Manual circuit-breaker referenceAOTG12LBCA: 15 A; AOTG12LBCB: 16 A — confirm all wiring and protection against current local requirements
Manual power-cable referenceAOTG12LBCA: 3.5 mm²; AOTG12LBCB: 2.5 mm². Connection cable: 1.5 mm². Apply current local wiring rules.
Cooling
Rated capacity: 3.50 kW
Capacity range: 0.90–4.17 kW
Rated input: 0.94 kW
Maximum input: 1.51 kW
EER: 3.72 kW/kW
Rated current: 4.3 A
Maximum current: 9.4 A
Moisture removal: 1.3 L/h
Heating
Rated capacity: 4.50 kW
Capacity range: 0.90–5.96 kW
Rated input: 1.19 kW
Maximum input: 2.09 kW
COP: 3.78 kW/kW
Rated current: 5.3 A
Maximum current: 10.9 A

3. Compressor, refrigerant and piping

ItemSpecification
CompressorDC twin rotary × 1
Compressor motor output850 W
RefrigerantR410A
Factory charge1,200 g for pipe length up to 15 m
Additional charge20 g per metre over 15 m
Maximum pipe length20 m
Maximum height difference15 m
Liquid / gas pipeØ6.35 mm (1/4 in.) / Ø9.52 mm (3/8 in.), flare connection
Refrigerant oilFREOL α68SZ, 350 cm³
Refrigerant charging: The factory charge covers up to 15 m total pipe length. Add 20 g per metre beyond 15 m, equivalent to 100 g at the maximum 20 m pipe length.

4. Fan, airflow and sound levels

Fan settingIndoor airflowEquivalent
Quiet480 m³/h133 L/s / 283 CFM
Low550 m³/h153 L/s / 324 CFM
Medium600 m³/h167 L/s / 353 CFM
High650 m³/h181 L/s / 383 CFM
Sound / outdoor airflowCoolingHeating
Indoor sound pressure26 dB(A) quiet / 29 dB(A) high24 dB(A) quiet / 29 dB(A) high
Outdoor sound pressure49 dB(A)49 dB(A)
Outdoor airflow2,050 m³/h1,840 m³/h
Specified sound-pressure levels are laboratory values measured in an anechoic chamber. Actual installed sound levels may be higher due to the surrounding environment, ductwork and mounting conditions.

5. Dimensions and weights

UnitNet dimensions (H × W × D)Shipping dimensionsWeight
ARTG12LLLB indoor198 × 700 × 620 mm274 × 945 × 772 mm18 kg net / 22 kg gross
AOTG12LBCA / AOTG12LBCB outdoor620 × 790 × 290 mm713 × 945 × 395 mm39 kg net / 42 kg gross

6. Operating range

ConditionRange
Outdoor cooling-10°C to 46°C
Outdoor heating-15°C to 24°C
Indoor cooling18°C to 32°C, 80% RH or less
Indoor heating16°C to 30°C

7. Direct answers to common questions

What is the cooling capacity?
3.50 kW rated.
What is the heating capacity?
4.50 kW rated.
What are the EER and COP?
EER is 3.72 kW/kW and COP is 3.78 kW/kW.
Does this system support a 20 m pipe run?
Yes. The maximum total pipe length is 20 m, subject to the maximum 15 m height difference and correct additional refrigerant charge.
How much additional refrigerant is required?
20 g per metre over the factory pre-charge length of 15 m.
What is the indoor airflow range?
750–650 m³/h across quiet to high fan settings.
Are the indoor and outdoor models a matched pair?
Yes. ARTG12LLLB is matched with either AOTG12LBCA or AOTG12LBCB.
Source: Fujitsu General Design & Technical Manual DR_AR007EF_05, dated 29 May 2020. Specifications and designs may change without notice. Confirm current installation instructions and local electrical requirements before installation or service work.