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Smart 4x1 multi split air conditioning system LG, composed of the outdoor Unit of 7,91 kW Mu4r27.u42, three interior murals 2,5 kW P09snd.ns0 and one indoor Unit of 3.5 kW P12snd.ns0 of the Dualcool AI range. This advanced solution allows simultaneously and independently up to four rooms by combining optimal powers with a single multitubaria outer motor. Equipped with compressor technology BLDC Inverter Twin Rotary and Ecological Refrigerant R32, it stands out for its outstanding seasonal energy efficiency A +++ cold, an excellent minimum sound pressure of 27 dB (A) and integrated Wi-Fi connectivity of Series with artificial intelligence support.
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Smart multizone residential air conditioning LG. . Outdoor Unit multitubaria of 7.9 kW combined optimally with three 2.5 kW splits and a powerful split 3.5 kW with artificial intelligence algorithms.
Due to the multiple mechanical combinations, simultaneous powers and different lengths and cufflode tubing lengths that require multi-split 4x1 installations, we carry out custom quotes with all the necessary material for his work. To ensure a perfect hydraulic dimensioning, verify the thermal simultaneity of the compressor and determine if its installation requires optional accessories or a specific balance of refrigerant gas, our engineering department exhaustively studies each request.
Indicate the square meters and the orientation of the four stays to validate that the combination of three 2,5 kW splits and one of 3.5 kW covers the actual thermal load of its space.
Specify the approximate lengths of pipe from the outdoor Unit each split to calculate the additional load of R32 gas necessary on site.
📩 Facilitate this data and our technical team will send you a complete breakdown with all the necessary material for your installation.
The system LG Multi inverter 4x1 equipped with the outdoor Unit MU4R27.U42 represents an extraordinary solution to provide integral climate comfort to the entire home or commercial place in a centralized and efficient manner. By linking the four interior units to a single multitubre exterior chassis, the system significantly optimizes the assembly space on balconies, roofs or terraces, mitigates the architectural visual impact on the façade and simplifies remarkably the work of General electrical connection compared to the placement of multiple 1x1 systems.
This advanced configuration staggered three internal units of 2.5 kW (model p09snd.ns0) with a higher performance unit of 3.5 kW (model p12snd.ns0). This distribution is perfect for properties that have three standard size zones, such as bedrooms, children's rooms or offices up to 20 m², and a main stay of higher dimensions that requires greater thermal thrust power, such as a living room, dining room or diaphanous kitchen up to 30 m². All the interior teams belong to the prestigious Dualcool AI series, characterized by its modern design and the incorporation of intelligent artificial intelligence algorithms that learn from user habits and climatic conditions of the environment to adjust air flow of Automatic way.
At the mechanical level, the outdoor Unit it incorporates a high strength Twin Rotary BLDC Inverter compressor, supplemented by the anti-corrosive treatment of the Ocean Black End battery, which ensures outstanding protection against marine salinity and severe climate wear. Thanks to the intelligent use of the ecological refrigerant R32 and the advanced pressure and temperature control sensors, the set reaches extraordinary seasonal efficiency levels with energy classification A +++ in refrigeration (SEER 8.50). Additionally, the system includes integrated Wi-Fi connectivity in each split, allowing integral and wireless management through the mobile application LG Thinq.
Reference Outdoor Unit: MU4R27.U42 (Catalog Reference: MU4R27 U24A) LG EU MULTI 2026.PDF
Maximum connectable units: Up to 4 interior units
Nominal refrigeration capacity (min-max): 7,91 kW (1.06 - 9.00 kW)
Nominal heat capacity (min-max): 8,60 kW (1.17 - 10.00 kW)
Seasonal Season / Scop Performance: 8,50 W / W / 4,61 W / W
Energy classification (cold / heat): A +++ / A ++
Nominal consumption Cold (Min-Max): 1,85 kW (0.29 - 3,44 kW)
Nominal heat consumption (Min-Max): 1,92 kW (0.28 - 2,54 kW)
Flow of maximum outside air: 50 m³ / min
Exterior sound pressure (cold / heat): 48 dB (A) / 51 dB (A)
Compressor technology: BLDC Inverter Twin Rotary
Outside battery treatment: Ocean black end
External dimensions (an. X al. X prof.): 950 x 834 x 330 mm
Net weight Outdoor Unit: 61.50 kg
P09Snd.ns0 (3 units): 2.50 kW cold / 3,20 kW interior heat multi LG.pdf
P12Snd.ns0 (1 unit): 3.50 kW cold / 3,70 kW interior heat multi LG.pdf
Cold sound pressure (P09Snd / P12Snd): 42/35/27 dB (A) (both equals)
Flow of nominal air (P09Snd / P12Snd): 10.3 / 7.6 / 4.8 m³ / min
Net Dimensions Splits (an. X al. X prof.): 799 x 307 x 235 mm (both models)
Net weight Indoor Unit (P09 / P12): 10 kg / 10 kg
Connectivity and interface: Wi-Fi integrated with ThinQ support and artificial intelligence
Diameter of liquid connections (exterior): 6.35 mm (1/4 ") x 4 outputs
Diameter of gas connections (exterior): 9.52 mm (3/8 ") x 4 outputs
Maximum tubing length Total: 70 meters
Maximum length by individual branch: 25 meters
Maximum unevenness (exterior / interior): 15 meters
Eve maximum difference between indoor units: 7.5 meters
Pre-filled length of factory: 45 meters
Amount of Refrigerant Gas of Preload (R32): 2.50 kg
Additional gas load (> 45m): 20 g / m
How do you manage the compressor invert the power when there is only one split on?
The outdoor Unit LG MU4R27.U42 Equip a Twin Rotary compressor with advanced Inverter technology that allows you to exactly modulate your physical performance. In refrigeration, it is able to descend its minimum range to 1.06 kW. When a single 2,5 kW split is activated, the compressor adjusts its revolutions to the minimum frequency required, avoiding inefficient electric consumption peaks and operating with extremely low energy consumption.
What are the guidelines for the balancing of R32 refrigerant in the installation?
The outdoor Unit it comes from the factory with a preload of 2.50 kg of refrigerant gas R32, designed to cover an accumulated footage of up to 45 meters of total pipe (adding the lengths of the four independent refrigeration lines). If the particularities of the work require exceeding 45 meters away, the authorized installer must add 20 grams of extra refrigerant for each additional metro installed, without exceeding the global maximum limit of 70 meters.
On https://tualmacendelclima.com/en/ we are specialist engineers in technical design, control and optimization of multi-split air conditioning networks and advanced zoning. If you need to solve doubts about simultaneity coefficients, maximum slopes or check the official performance specifications of the range LG, our engineering department is at your entire disposal.
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