Haier AU182AFERA, AU36NAHERA, AU362AHERA, AU242AGERA, AU282AHERA Air discharging method

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Installation Procedure

Refrigerant piping

 

 

5. Air discharging method

After finishing connection of refrigerant pipe, it shall perform air tightness test.

The air tightness test adopts nitrogen tank to give pressure according to the pipe connection mode as the following figure shown.

The gas and liquid valve are all in close state. In order to prevent the nitrogen entering the circulation system of outdoor unit, tighten the valve rod before giving pressure (both gas and liquid valve rods).

 

 

Low pressure peizometer

 

 

 

High pressure peizometer

Indoor

Outdoor

3-way valve totally closed

 

(Gas side)

VL VH

 

 

 

Meter separator

Completely tightened

Flare part

Discharging valve

 

 

 

Completely tightened

Indoor units

First step: 0.3MPa (3. 0kg/cm2g) pressurize over 3 minutes.

Second step: 1.5Mpa (15kg/cm2g) pressurize over 3 minutes. Large leakage will be found.

Third step: 3.0 MPa (30kg/cm2g) pressurize about 24 hours. Little leakage will be found.

Flare part

Manhole

Dropping valve

 

 

Nitrogen tank

Outdoor units

2-way valve totally closed (Liquid side)

LINE

 

CYLINDER

 

PRESSURE

PRESSURE

 

 

 

GAUGE

GAUGE

 

 

 

TUBING

 

 

BRING

 

 

BRAZED

 

 

SWEAT

 

 

JOINT

 

CYLINDER

LARGE

 

OF

 

NITROGEN

SLIP-ON

 

 

CONNECTOR

 

 

SERVICE

 

 

HOUSE

 

 

Check if the pressure drops

The pressure does not drop-passed

The pressure drops-check the leaking point.

From pressurizing to 24 hours later, each 1* difference of ambient temperature will make 0.01MPa(0.1kg/cm2g) pressure change. It shall be corrected during test.

Checking the leaking point

In the first to third test steps, if the pressure drops, check the leakage in each joint use sense of hearing, feeling and soap water, etc. methods to find the leaking point. After confirming the leaking point, welding it again or tighten the nut tightly again.

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Contents Room AIR Conditioner Contents Name of Parts Safety Cautions Symbols used in the illustrationsInstalled electrical-leaking circuit breaker Have the unit professionally installed Securely attach the terminal coverpanel on the unitOnly use specified parts Use a vacuum pump with a reverse-flow- check valveExercise special care when handling the tools Before Installing the UnitDo not use a charging cylinder Only use R410A refrigerantDo not operate the unit without air filters Make sure the wires are not subject to tensionProperly dispose of the packing materials Items to Be Checked Necessary Tools and MaterialsTool and materials that must not used with R410A Flare Nut Piping Materials/Radial ThicknessFlare Machiningtype-O and OL only Airtightness Test Items to be strictly observedReasons VacuumingCharging Refrigerant Remedies to be taken in case of a refrigerant leakInstallation Procedure Installation of outdoor unit AU242AGERA Refrigerant piping Refrigerant piping Piping size Air discharging method Piping method to use wacuum pump e.g. AU182AFERA Electric wiring Wiring connection Wiring procedureBefore starting test run for all Heat pump models Test runHaier Group

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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