Mitsubishi Electronics PLA-A-AA Installing the refrigerant piping, Precautions, 45 ±2

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4. Installing the refrigerant piping

A

45°±2°

B

 

 

° ±0.5°

øA

 

90

 

 

Fig. 4-1

A Flare cutting dimensions

Copper pipe O.D.

Flare dimensions

(mm, inch)

øA dimensions (mm, inch)

ø6.35, 1/4”

8.7

- 9.1, 11/32 - 23/64

ø9.52, 3/8”

12.8 - 13.2, 1/2 - 33/64

ø12.7, 1/2”

16.2

- 16.6, 41/64 - 21/32

ø15.88, 5/8”

19.3

- 19.7, 49/64 - 25/32

4.1. Precautions

4.1.1. For devices that use R410A refrigerant

•Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil applied to the flared sections.

•Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses specified in the table to the below. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric com- pounds, oxidants, debris, or dust.

Warning:

When installing or moving the air conditioner, use only the specified refriger- ant (R410A) to charge the refrigerant lines. Do not mix it with any other refriger- ant and do not allow air to remain in the lines. Air enclosed in the lines can cause pressure peaks resulting in a rupture and other hazards.

 

A12, A18

A24, A30, A36, A42

Liquid pipe

ø6.35 mm, ø1/4 inch

ø9.52 mm, ø3/8 inch

thickness 0.8 mm, 1/32 inch

thickness 0.8 mm, 1/32 inch

 

 

 

 

Gas pipe

ø12.7 mm, ø1/2 inch

ø15.88 mm, ø5/8 inch

thickness 0.8 mm, 1/32 inch

thickness 1.0 mm, 3/64 inch

 

•Do not use pipes thinner than those specified above.

4.2.Connecting pipes (Fig. 4-1)

(inch)

•

When commercially available copper pipes are used, wrap liquid and gas pipes

 

C

 

with commercially available insulation materials (heat-resistant to 100 °C, 212 °F or

 

more, thickness of 12 mm, 1/2 inch or more).

 

 

 

•

The indoor parts of the drain pipe should be wrapped with polyethylene foam insu-

 

 

lation materials (specific gravity of 0.03, thickness of 9 mm, 23/64 inch or more).

 

•

Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening

Dflare nut.

•Use two wrenches to tighten piping connections.

•Use refrigerant piping insulation provided to insulate indoor unit connections. Insu- late carefully.

BFlare nut tightening torque

Copper pipe O.D.

Flare nut O.D.

Tightening torque

(mm, inch)

(mm, inch)

(N·m, ft·lbs)

ø6.35, 1/4”

17, 43/64

14 - 18, 10 -13

ø9.52, 3/8”

22, 7/8

34 - 42, 25 - 30

ø12.7, 1/2”

26, 1-3/64

49 - 61, 35 - 44

ø15.88, 5/8”

29, 1-9/64

68 - 82, 49 - 59

CApply refrigerating machine oil over the entire flare seat surface.

DUse correct flare nuts meeting the pipe size of the outdoor unit.

Available pipe size

 

A12, A18

A24, A30, A36, A42

Liquid side

ø6.35

–

–

ø9.52

 

 

ø12.7

–

Gas side

–

ø15.88

 

–

–

?: Factory flare nut attachment to the heat-exchanger.

5

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Contents Air-Conditioners Safety precautions ContentsInstalling the indoor unit Installation locationCheck the indoor unit accessories Fig Refrigerant and drainage piping locations of indoor unit13/16 Unit suspension procedures FigBranch duct hole and fresh air intake hole Fig Precautions Installing the refrigerant pipingConnecting pipes Fig For devices that use R410A refrigerantIndoor unit Fig Drainage piping workFor twin/triple combination Drainage piping work FigEntries given in the diagram Remove the two electrical wiring service panelsElectrical work Do not allow slackening of the terminal screwsL2 G B Power supplies onlyControl application Dip switch SW5-2 and SW5-3 is effective onlyFor heat pump models For cooling only modelsFor wireless remote controller Remote controllerFor wired remote controller Function setting on the unit Selecting the unit functions Function settingsFunction setting on the remote controller Assigning a remote controller to each unit FigUsing wireless remote controller Fig Using wired remote controller FigTest run Before test runWired remote controller Fig Using SW4 in outdoor unitWireless remote controller Fig Self-checkCheck of drainage Fig System control Installing the grilleCheck Installing the wireless sensor FigLocking the up/down airflow direction Fig Installing the intake grille Fig Easy maintenance function This function only for A-controlDisplay example Comp discharge temperature 147 F ⋅ 8 as shown in the illustrationBG79U795H01

PLA-A-AA specifications

The Mitsubishi Electronics PLA-A-AA series is a cutting-edge range of air conditioning units designed to provide efficient cooling and heating solutions for various applications, from residential to commercial environments. This series stands out due to its innovative technology and user-friendly features.

One of the main highlights of the PLA-A-AA series is its use of advanced inverter technology. This technology allows the units to dynamically adjust their power output based on the current temperature conditions, ensuring that the desired climate is maintained efficiently. By minimizing energy consumption during operation, these systems can lead to significant savings on utility bills.

Additionally, the PLA-A-AA series is equipped with a built-in AI-driven control system that enhances user experience. This smart feature learns the user’s preferences and adjusts the operation accordingly, optimizing comfort while ensuring energy efficiency. The integration of smart technology also allows for remote control capabilities through mobile applications, enabling users to adjust settings from anywhere.

A notable characteristic of the PLA-A-AA units is their quiet operation. Designed with noise-reduction technology, these units operate at low decibel levels, making them ideal for settings where noise can be a concern, such as bedrooms and offices. This attention to sound design ensures that users can enjoy a peaceful environment without disruption.

The PLA-A-AA series also emphasizes sustainability and environmental responsibility. With a focus on using eco-friendly refrigerants, these systems have minimal impact on the environment. Mitsubishi Electronics continues to prioritize green technologies, consistently striving to reduce their carbon footprint through innovative engineering and efficiency programs.

Moreover, the units in this series are known for their durability and reliability. Constructed with high-quality materials and designed to withstand various climatic conditions, the PLA-A-AA series promises long-lasting performance. Regular maintenance is also simplified due to easily accessible components, helping to prolong the life of the unit.

In conclusion, the Mitsubishi Electronics PLA-A-AA series exemplifies the perfect blend of advanced technology, energy efficiency, and user-friendly features. With its inverter technology, smart control options, quiet operation, and commitment to sustainability, this range is an ideal choice for anyone seeking a dependable air conditioning solution.
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