Air Conditioner 3x1 with WiFi Daikin Perfera 2.0 kW (2) + 4.2 kW

The Daikin Perfera 3x1 multisplit air conditioner with WiFi 2.0 + 2.0 + 4.2 kW is a climate control system designed to provide cooling and heating in three rooms using a single outdoor unit. This set is made up of two Daikin Perfera FTXM20B indoor units of 2.0 kW, one FTXM42B indoor unit of 4.2 kW, and one Daikin 3MXM52A8 outdoor unit with a nominal cooling capacity of 5.2 kW.

Thanks to its Inverter technology, heat pump with R-32 refrigerant and WiFi connectivity, it lets you enjoy a comfortable temperature all year round. The indoor units feature individual temperature control, fan speed adjustment and scheduling, adapting to the needs of each room.

The Daikin Perfera range stands out for incorporating advanced air treatment technologies such as Flash Streamer, intelligent two-zone motion sensors and 3D airflow distribution. Its quiet operation and energy-saving functions make this system an interesting option for homes, apartments and offices that need to air condition three spaces of different sizes.

Daikin Perfera 3x1 air conditioner composition

This multisplit set is made up of the following equipment:

• 2 Daikin Perfera FTXM20B indoor units: wall-mounted units with 2.0 kW cooling class each, equivalent to approximately 6,824 BTU/h per unit, commercially 7000 BTU. They feature WiFi, quiet operation, intelligent presence sensor and Flash Streamer technology.
• 1 Daikin Perfera FTXM42B indoor unit: wall-mounted unit with 4.2 kW cooling class, equivalent to approximately 14,330 BTU/h, commercially 14000 BTU. Designed for living rooms, dining rooms and rooms with higher thermal needs.
• 1 Daikin 3MXM52A8 outdoor unit: Inverter multisplit unit with three independent refrigerant connections, R-32 refrigerant and a reference nominal capacity of 5.2 kW in cooling and 6.8 kW in heating.
• 3 Daikin ARC466A93 wireless remote controls: one for each indoor unit, to independently control temperature and air conditioning functions.

The multisplit configuration allows three rooms to be air conditioned with a single outdoor unit, reducing the space required on facades, balconies and terraces compared with installing three separate air conditioning systems.

Compatibility note: Daikin capacity tables include the 20 + 20 + 42 class combination with the 3MXM52A8 outdoor unit, but the documentation consulted does not expressly identify the FTXM-B generation. The specific compatibility of the FTXM20B and FTXM42B references, especially the assignment of the latter to the refrigerant ports, must be confirmed with Daikin before installing the set.

Main advantages of the Daikin Perfera 3x1 air conditioner

Independent climate control for three rooms

The Daikin Perfera multisplit system allows the three indoor units to be controlled separately, adjusting temperature, fan speed and operating schedules according to the needs of each room.

For example, the two 2.0 kW FTXM20B units can be installed in small bedrooms or offices, while the 4.2 kW FTXM42B unit is intended for the living room or dining room.

The three units can operate simultaneously, although they must work in the same general cooling or heating mode. It is not possible to cool one room while heating another.

Smart WiFi control via Daikin Onecta

The Daikin Perfera FTXM20B and FTXM42B indoor units feature WiFi connectivity for managing climate control from a smartphone or tablet using the Daikin Onecta app.

The app allows each indoor unit to be controlled individually from anywhere with an Internet connection.

Its main functions include:

• Individual on/off control of each indoor unit.
• Independent temperature adjustment for each room.
• Selection of cooling, heating, fan and dehumidification modes.
• Adjustment of fan speed and airflow distribution.
• Weekly scheduling and timer programming.
• Access to the energy control functions available in the app.
• Control of the main functions through compatible voice assistants such as Amazon Alexa and Google Assistant.

WiFi control makes it possible to adapt operation to the occupants’ daily routines and avoid unnecessary consumption in rooms that are not being used.

Flash Streamer technology to improve air quality

The Daikin Perfera indoor units incorporate Flash Streamer technology, which uses high-speed electron discharge to help reduce certain allergens and odors present in indoor air.

This technology is complemented by different filtration elements:

• Silver allergen filter: helps capture certain allergens such as pollen and dust mites.
• Titanium apatite deodorizing filter: helps reduce unpleasant odors.
• Air filter: traps dust particles present in the air circulating through the unit.

The combination of these technologies helps improve indoor air quality and provides a more comfortable environment in the air-conditioned rooms.

Intelligent two-zone motion sensor

The indoor units include an intelligent two-zone presence sensor that detects where people are in the room and adapts the direction of airflow to reduce direct drafts on occupants.

When no presence is detected for a certain period, the unit can automatically activate energy-saving operation, helping reduce electricity consumption.

Even air distribution with Comfort+ and 3D airflow

Daikin’s Comfort+ technology uses dual flaps to improve air distribution and promote a uniform temperature throughout the room.

In cooling mode, the unit can direct air toward the upper part of the room to reduce direct drafts. In heating mode, it adapts distribution to promote the circulation of warm air.

In addition, the 3D airflow combines automatic vertical and horizontal swing to distribute air across different areas of the room.

These functions help reduce temperature differences and provide greater thermal comfort during operation.

Quiet operation for bedrooms and rest areas

One of the main features of the Daikin Perfera range is its quiet operation, especially interesting for bedrooms, offices and spaces where discreet climate control is desired.

• FTXM20B 2.0 kW: minimum sound pressure of 19 dB(A) in cooling and 20 dB(A) in heating.
• FTXM42B 4.2 kW: minimum sound pressure of 21 dB(A) in both cooling and heating.

These values correspond to each indoor unit’s quiet mode and help maintain a peaceful environment during operation.

Comfort and energy-saving functions

The Daikin Perfera indoor units include different modes to adapt operation to each moment’s needs:

• Powerful mode: temporarily increases output to reach the selected temperature more quickly.
• Econo mode: limits the unit’s maximum electricity consumption.
• Quiet mode: reduces fan speed to minimize noise.
• Night mode: adapts operation during rest hours.
• Dehumidification: helps reduce ambient humidity.
• Fan mode: allows air to circulate in the room without activating cooling or heating.
• Weekly timer: makes it easy to set personalized operating schedules.
• Auto restart: restores settings after a power interruption.

Cooling and heating capacity of the Daikin Perfera 3x1 set

The system combines two 2.0 kW class indoor units and one 4.2 kW unit, whose total cooling capacity class sum is 8.2 kW. However, the combined nominal cooling capacity with all three units operating simultaneously is 5.2 kW, according to Daikin tables for the 20 + 20 + 42 class combination with the 3MXM52A8 outdoor unit.

The available capacity is distributed among the indoor units depending on which ones are operating, the thermal demand of each room and the environmental conditions.

Cooling capacity

According to Daikin’s official tables for the 3MXM52A8 outdoor unit and the 2.0 + 2.0 + 4.2 kW class combination, the reference nominal values are:

• Minimum cooling capacity: 1.9 kW.
• Nominal cooling capacity: 5.2 kW, approximately 17,740 BTU/h.
• Maximum cooling capacity: 7.2 kW.
• Minimum power input in cooling: 0.39 kW.
• Nominal power input in cooling: 1.04 kW.
• Reference maximum power input in cooling: 2.15 kW.
• Calculated nominal EER: 5.00.

When all three indoor units operate simultaneously under nominal conditions, the cooling capacity distribution indicated for this class combination is:

• First FTXM20B 2.0 kW unit: 1.27 kW.
• Second FTXM20B 2.0 kW unit: 1.27 kW.
• FTXM42B 4.2 kW unit: 2.66 kW.

When only one or two indoor units are operating, the available capacity can be redistributed among the rooms requiring climate control, within the system’s operating limits.

Heating capacity

The reversible heat pump allows the system to be used during the colder months, with a combined nominal heating capacity of 6.8 kW.

• Minimum heating capacity: 1.4 kW.
• Nominal heating capacity: 6.8 kW, approximately 23,200 BTU/h.
• Maximum heating capacity: 8.1 kW.
• Minimum power input in heating: 0.32 kW.
• Nominal power input in heating: 1.36 kW.
• Reference maximum power input in heating: 2.10 kW.
• Calculated nominal COP: 5.00.

The nominal heating capacity distribution when all three indoor units operate simultaneously is:

• First FTXM20B 2.0 kW unit: 1.66 kW.
• Second FTXM20B 2.0 kW unit: 1.66 kW.
• FTXM42B 4.2 kW unit: 3.48 kW.

These values come from the official technical tables for power class combinations published by Daikin for the 3MXM52A8 outdoor unit. Actual performance will depend on indoor and outdoor temperatures, installation conditions and simultaneous operation.

Energy efficiency of the Daikin Perfera 3x1 air conditioner

The system uses Inverter technology to regulate compressor speed according to climate control needs, avoiding unnecessary starts and stops and promoting efficient electricity consumption.

The Daikin 3MXM-A8 outdoor family reaches an energy rating of up to A+++ in cooling and A++ in heating, according to the general specifications published by the manufacturer for this multisplit range.

Its energy features include:

• Maximum reference energy class of the range in cooling: A+++.
• Maximum reference energy class of the range in heating: A++.
• Reference nominal cooling capacity of this class combination: 5.2 kW.
• Reference nominal heating capacity: 6.8 kW.
• Technology: Inverter with Swing compressor.
• Refrigerant: R-32.
• Independent control: allows only the rooms that need cooling or heating to be conditioned.
• Econo mode: helps limit maximum electricity consumption.

SEER and SCOP indicators express the seasonal energy efficiency of the air conditioner. The higher their value, the greater the amount of thermal energy supplied per unit of electrical energy consumed under standardized calculation conditions.

Important: the A+++ and A++ ratings correspond to the maximum levels published for the outdoor range, not to a specific energy label for the FTXM20B + FTXM20B + FTXM42B + 3MXM52A8 set. The exact SEER, SCOP and energy class values must be confirmed with Daikin for this combination before publishing them as certified performance data.

Technical specifications of the Daikin FTXM20B 2.0 kW indoor units

The set includes two Daikin Perfera FTXM20B indoor units, designed to air condition bedrooms, children’s rooms, offices and other spaces with moderate thermal needs.

The following specifications apply to each of the two indoor units:

• Brand: Daikin.
• Series: Perfera.
• Reference: FTXM20B.
• Quantity: 2 units.
• Type: wall-mounted indoor unit.
• Color: white.
• Cooling capacity class: 2.0 kW.
• Cooling equivalent: approximately 6,824 BTU/h, commercially 7000 BTU.
• Dimensions (H × W × D): 298 × 804 × 252 mm.
• Weight per unit: 11.5 kg.
• Nominal power input of the indoor fan and electronics in cooling: 0.019 kW.
• Nominal power input of the indoor unit in heating: 0.018 kW.
• Airflow in cooling (high/medium/low/quiet): 11.9 / 8.9 / 6.3 / 4.9 m³/min.
• Airflow in heating (high/medium/low/quiet): 11.4 / 9.2 / 6.9 / 4.9 m³/min.
• Sound pressure in cooling (high/medium/low/quiet): 41 / 33 / 25 / 19 dB(A).
• Sound pressure in heating (high/medium/low/quiet): 39 / 34 / 26 / 20 dB(A).
• Sound power in cooling: 54 dB(A).
• Sound power in heating: 53 dB(A).
• Liquid refrigerant connection: 1/4" (6.4 mm).
• Gas refrigerant connection: 3/8" (9.5 mm).
• Condensate drain connection: 16 mm.
• Wireless remote control: ARC466A93.
• Connectivity: WiFi via Daikin Onecta.
• Comfort technologies: Comfort+, intelligent two-zone motion sensor and 3D airflow.
• Air treatment: Flash Streamer, silver particle filter and titanium apatite deodorizing filter.
• Additional functions: Powerful mode, Econo mode, quiet operation, fan, dehumidification and weekly timer.

Technical specifications of the Daikin FTXM42B 4.2 kW indoor unit

The Daikin Perfera FTXM42B indoor unit has a cooling capacity class of 4.2 kW, so it is intended for living rooms, dining rooms, offices and rooms with greater climate control needs.

It combines a compact wall-mounted design with WiFi connectivity, quiet operation and advanced air distribution and treatment technologies.

• Brand: Daikin.
• Series: Perfera.
• Reference: FTXM42B.
• Quantity: 1 unit.
• Type: wall-mounted indoor unit.
• Color: white.
• Cooling capacity class: 4.2 kW.
• Cooling equivalent: approximately 14,330 BTU/h, commercially 14000 BTU.
• Dimensions (H × W × D): 298 × 804 × 252 mm.
• Weight: 11.5 kg.
• Nominal power input of the indoor unit in cooling: 0.031 kW.
• Nominal power input of the indoor unit in heating: 0.035 kW.
• Airflow in cooling (high/medium/low/quiet): 13.3 / 9.8 / 7.2 / 5.0 m³/min.
• Airflow in heating (high/medium/low/quiet): 14.0 / 10.0 / 7.1 / 5.3 m³/min.
• Sound pressure in cooling (high/medium/low/quiet): 45 / 38 / 30 / 21 dB(A).
• Sound pressure in heating (high/medium/low/quiet): 45 / 37 / 29 / 21 dB(A).
• Sound power in cooling: 60 dB(A).
• Sound power in heating: 60 dB(A).
• Liquid refrigerant connection: 1/4" (6.4 mm).
• Gas refrigerant connection: 3/8" (9.5 mm).
• Condensate drain connection: 16 mm.
• Wireless remote control: ARC466A93.
• Connectivity: WiFi via Daikin Onecta.
• Comfort technologies: Comfort+, intelligent two-zone motion sensor and 3D airflow.
• Air treatment: Flash Streamer, silver particle filter and titanium apatite deodorizing filter.
• Additional functions: Powerful mode, Econo mode, quiet operation, fan, dehumidification and weekly timer.

Technical specifications of the Daikin 3MXM52A8 outdoor unit

The Daikin 3MXM52A8 outdoor unit is a multisplit Inverter heat pump designed to connect up to three compatible indoor units through independent refrigerant circuits.

It features a hermetically sealed Swing compressor that adapts its operation to the thermal demand of the rooms, providing cooling and heating using R-32 refrigerant.

• Brand: Daikin.
• Reference: 3MXM52A8.
• Type: 3x1 multisplit outdoor unit.
• Number of connections for indoor units: 3.
• Reference nominal cooling capacity: 5.2 kW.
• Reference nominal heating capacity: 6.8 kW.
• Maximum total connectable indoor capacity class: 9.0 kW.
• Sum of the proposed indoor capacity classes: 8.2 kW.
• Technology: Inverter.
• Compressor: Hermetically sealed Swing compressor.
• Refrigerant: R-32.
• Factory refrigerant charge: 1.80 kg.
• Global warming potential (GWP): 675.
• CO₂ equivalent of the factory charge: approximately 1.22 tonnes.
• Dimensions (H × W × D): 734 × 974 × 408 mm.
• Weight: 57 kg.
• Nominal sound pressure in cooling: 46 dB(A).
• Nominal sound pressure in heating: 47 dB(A).
• Power supply: single-phase, 220-240 V, 50 Hz.
• Reference current for electrical sizing: 16.3 A.
• Recommended circuit breaker in the manual: 20 A, subject to electrical calculation and current regulations.
• Outdoor operating temperature in cooling: from -10 °C to +50 °C.
• Minimum outdoor operating temperature in heating: -20 °C, according to Daikin conditions.
• Maximum pipe length per indoor unit: 25 meters.
• Maximum total refrigerant piping length: 50 meters.

Refrigerant connections of the Daikin Perfera 3x1

The Daikin 3MXM52A8 outdoor unit has three independent refrigerant circuits. The proposed indoor units have 1/4" liquid and 3/8" gas connections, according to their official technical sheets.

Indoor unit connection diameters

• First 2.0 kW FTXM20B: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.
• Second 2.0 kW FTXM20B: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.
• FTXM42B 4.2 kW: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.

Outdoor unit connection diameters

The Daikin 3MXM52A8 outdoor unit has the following refrigerant ports:

• Port A: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.
• Port B: 1/4" (6.4 mm) liquid and 1/2" (12.7 mm) gas.
• Port C: 1/4" (6.4 mm) liquid and 1/2" (12.7 mm) gas.

For indoor units in classes 20 and 25, the Daikin manual allows connection to port A without a reducer or to ports B and C using refrigerant reducers 2 and 4, which make it possible to adapt the 1/2" gas connection to 3/8" piping.

Important for the FTXM42B: the FTXM42B indoor unit has a 3/8" gas connection, but the port assignment table for the 3MXM52A8 expressly identifies as exceptions for class 42 with that diameter the references FTXM42R, FTXM42A and FTXA42C. The FTXM42B is not listed in that note. Therefore, before installation, Daikin must confirm the authorized port for this reference and whether specific reducers are required. It should not be assumed that the port assignment of previous generations applies directly.

Daikin’s manual includes a reducer set among the outdoor unit’s standard accessories. The installer must check the availability of the necessary adapters and follow the authorized connection instructions for the exact references.

Maximum pipe lengths and permitted height differences

To ensure proper operation of the Daikin Perfera 3x1 system, the installation must respect the maximum refrigerant pipe lengths and height differences established by Daikin for the 3MXM52A8 outdoor unit.

• Maximum pipe length per indoor unit: 25 meters.
• Maximum total refrigerant piping length: 50 meters, adding the three runs together.
• Minimum pipe length per indoor unit: 3 meters.
• Maximum height difference between outdoor and indoor units when the outdoor unit is installed higher: 15 meters.
• Maximum height difference between indoor units when the outdoor unit is installed higher: 7.5 meters.
• Maximum height difference between outdoor and indoor units when the outdoor unit is installed lower: 7.5 meters.
• Maximum height difference between indoor units when the outdoor unit is installed lower: 15 meters.
• Total length covered by the factory refrigerant charge: 30 meters of liquid piping.
• Additional refrigerant charge: 20 grams per additional meter when the total piping length exceeds 30 meters.
• Maximum permitted total refrigerant charge: 2.2 kg.

For example, an installation can be designed with refrigerant runs of 10, 15 and 20 meters, resulting in a total length of 45 meters. This layout is within the maximum length limits established for the outdoor unit, although the height differences, port compatibility and other technical conditions must also be verified.

When exceeding the 30 meters covered by the factory charge, it will be necessary to calculate and add the corresponding amount of R-32 refrigerant. For a total length of 45 meters, the theoretical calculation would be 300 additional grams.

Refrigerant length is calculated by taking as a reference the one-way liquid pipe run between the units, without counting the gas pipe of the same circuit again.

Insulation of refrigerant piping

Daikin establishes specific requirements for the thermal insulation of refrigerant piping in order to reduce energy losses and prevent condensation.

• 1/4" liquid pipes: minimum insulation thickness of 10 mm.
• 3/8" gas pipes: minimum insulation thickness of 13 mm.
• 1/2" gas pipes, where applicable: minimum insulation thickness of 13 mm.
• Material: polyethylene foam suitable for refrigeration installations, with a minimum thermal resistance of 120 °C.
• Refrigerant piping: seamless copper, phosphorus-deoxidized and suitable for R-32 refrigerant.

When the ambient temperature exceeds 30 °C and relative humidity is above 80%, Daikin specifies a minimum insulation thickness of 20 mm to prevent surface condensation.

The installer must also check the pipe conditions, condensate drainage, electrical supply and the necessary clearances around the outdoor unit.

What spaces is the Daikin Perfera 3x1 2.0 + 2.0 + 4.2 kW recommended for?

The Daikin Perfera 3x1 multisplit 2.0 + 2.0 + 4.2 kW is designed for homes and offices that need to air condition three rooms with different thermal requirements.

A common layout may consist of installing the two 2.0 kW FTXM20B units in small bedrooms, children’s rooms or offices, while the 4.2 kW FTXM42B unit is intended for a larger living room, dining room or lounge area.

The area each unit can condition will depend on the home’s insulation, orientation, ceiling height, glazed surface, occupancy and climate conditions.

It is also important to note that when all three indoor units operate simultaneously, the available capacity is distributed according to the system’s total reference capacity of 5.2 kW in cooling and 6.8 kW in heating.

To ensure proper sizing, it is advisable for a professional to calculate the cooling and heating needs of each room before selecting and validating the set.

Installation and required materials

The proposed composition for this Daikin Perfera 3x1 set consists of two FTXM20B indoor units, one FTXM42B indoor unit and one 3MXM52A8 outdoor unit, together with their corresponding remote controls and the standard accessories supplied by the manufacturer.

The materials required for installation are not included in the set. Depending on the characteristics of each home or premises, it will be necessary to have copper refrigerant piping, insulation, electrical and interconnection wiring, condensate drain piping, trunking, outdoor unit supports and fastening elements.

Before installation, it will be necessary to confirm with Daikin the specific compatibility between the FTXM42B and the 3MXM52A8, the assignment of the refrigerant ports and the required adapters.

The installation must respect the maximum pipe lengths, height differences, refrigerant connections and power supply conditions established by the manufacturer.

Installation must be carried out by qualified and accredited professionals authorized to work with climate control equipment using fluorinated gases, in compliance with current regulations and Daikin’s official technical instructions.

With three indoor units of different capacities, independent WiFi control, Inverter technology, quiet operation and advanced air treatment technologies, the Daikin Perfera multisplit 3x1 air conditioner FTXM20B + FTXM20B + FTXM42B + 3MXM52A8 offers a configuration designed to provide cooling and heating in three rooms, subject to manufacturer validation of the exact references’ compatibility.