Read Before Installation

*The table shows the standards in Japan. Using this table as a reference, choose pipes that meet the local standards.

Airtightness Test

No changes from the conventional method .Note that a refrigerant leakage detector for R22 or R407C cannot detect R410A leakage.

NO

NO

 

Halide torch

R22 or R407C leakage detector

Items to be strictly observed :

1.Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment's air tightness, taking temperature variations into account.

2.When investigating leakage locations using a refrigerant, be sure to use R410A.

3.Ensure that R410A is in a liquid state when charging.

Reasons :

1.Use of oxygen as the pressurized gas may cause an explosion.

2.Charging with R410A gas will lead the composition of the remaining refrigerant in the cylinder to change and this refrigerant can then not be used.

Vacuuming

1.Vacuum pump with check valve

A vacuum pump with a check valve is required to prevent the vacuum pump oil from flowing back into the refrigerant circuit when the vacuum pump power is turned off (power failure). It is also possible to attach a check valve to the actual vacuum pump afterwards.

2.Standard degree of vacuum for the vacuum pump

Use a pump which reaches 65Pa or below after 5 minutes of operation.

In addition, be sure to use a vacuum pump that has been properly maintained and oiled using the specified oil. If the vacuum pump is not properly maintained, the degree of vacuum may be too low.

3.Required accuracy of the vacuum gauge

Use a vacuum gauge that can measure up to 650Pa. Do not use a general gauge manifold since it cannot measure a vacuum of 650Pa.

4.Evacuating time

*Evacuate the equipment for 1 hour after 650Pa has been reached.

*After envacuating, leave the equipment for 1 hour and make sure the that vacuum is not lost.

5.Operating procedure when the vacuum pump is stopped

In order to prevent a backflow of the vacuum pump oil, open the relief valve on the vacuum pump side or loosen the charge hose to drawn in air before stopping operation.

The same operating procedure should be used when using a vacuum pump with a check valve.

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Haier AU242AGERA, AU182AFERA, AU36NAHERA, AU362AHERA Airtightness Test, Items to be strictly observed, Reasons, Vacuuming
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AU282AHERA, AU242AGERA, AU362AHERA, AU36NAHERA, AU182AFERA specifications

Haier, a leading brand in home appliances and air conditioning solutions, offers a range of innovative air conditioners designed to enhance comfort and energy efficiency. Among their notable models are the AU36NAHERA, AU182AFERA, AU242AGERA, AU362AHERA, and AU282AHERA, each tailored to meet diverse cooling needs.

The AU36NAHERA is a high-capacity air conditioning unit, perfect for larger spaces. Its powerful compressor ensures rapid cooling, while the inverter technology optimizes energy consumption by adjusting the cooling output according to the ambient temperature. This model also features a 3D airflow system, which maintains consistent temperature distribution throughout the room, enhancing overall comfort.

Moving to the AU182AFERA, this air conditioner is ideal for medium-sized areas. It utilizes advanced filtration technology, including a high-performance HEPA filter that captures airborne dust, allergens, and pollutants. This feature not only provides cleaner air but also promotes a healthier environment, making it a perfect choice for families or individuals with allergies.

The AU242AGERA stands out with its sleek design and versatile functionality. This model is equipped with a smart control feature that allows users to manage settings through a mobile app. Additionally, its eco-friendly refrigerant contributes to lower carbon emissions, showcasing Haier's commitment to sustainability without sacrificing performance.

The AU362AHERA is another impressive unit that combines efficiency and performance. Its turbo cooling feature ensures quick temperature drops during hot days, while the quiet operation mode guarantees a peaceful environment. This model is equipped with a self-cleaning function that removes dust and germs from the evaporator, further promoting air quality.

Lastly, the AU282AHERA offers a balance of compact size and powerful cooling capabilities. Its energy-efficient design makes it suitable for smaller spaces without compromising performance. Equipped with a user-friendly remote control, this model provides convenience in adjusting settings from anywhere in the room.

Together, these models exemplify Haier's dedication to integrating advanced technology, energy efficiency, and user convenience, making them excellent choices for anyone looking to enhance their indoor climate while remaining environmentally conscious.
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