Installation

AirPurging

Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.

•Pressure in the system rises.

•Operating current rises.

•Cooling(or heating) efficiency drops.

•Moisture in the refrigerant circuit may freeze and block capillary tubing.

•Water may lead to corrosion of parts in the refrigeration system.

Therefore, the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated to remove any noncondensables and moisture from the system.

AirpurgingWith VacuumPump

Preparation

• Do a leak test of all joints of the tubing(both indoor

 

and outdoor) and both gas and liquid side service

• Check that each tubing(both liquid and gas side

valves.

tubes) between the indoor and outdoor units have

Bubbles indicate a leak. Be sure to wipe off the soap

been properly connected and all wiring for the test

with a clean cloth.

run has been completed. Remove the service

• After the system is found to be free of leaks, relieve

valve caps from both the gas and the liquid side

the nitrogen pressure by loosening the charge hose

on the outdoor unit. Note that both the liquid and

connector at the nitrogen cylinder. When the system

the gas side service valves on the outdoor unit are

pressure is reduced to normal, disconnect the hose

kept closed at this stage.

from the cylinder.

ENGLISH

Leak test

• Connect the manifold valve(with pressure

Indoor unit

Manifold valve

gauges) and dry nitrogen gas cylinder to this

service port with charge hoses.

CAUTION

Be sure to use a manifold valve for air purging. If it is not available, use a stop valve for this purpose. The "Hi" knob of

Outdoor unit

Pressure

 

 

gauge

Lo

Hi

Charge hose

the manifold valve must always be kept close.

•Pressurize the system to no more than 150 P.S.I.G. with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P.S.I.G. Next, test for leaks with liquid soap.

CAUTION

To avoid nitrogen entering the refrigerant system in a liquid state, the top of the cylinder must be higher than its bottom when you pressurize the system.

Usually, the cylinder is used in a vertical standing position.

Nitrogen gas cylinder(in vertical standing position)

Installation Manual 27

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Page 27
Image 27
LG Electronics LS122CE installation manual Air Purging, Air purging With Vacuum Pump
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LS122CE specifications

The LG Electronics LS122CE is a sophisticated air conditioning unit designed to provide optimal cooling and comfort for residential and commercial spaces. This system embodies modern technology and innovative design, making it a top choice for individuals looking to invest in an efficient cooling solution.

One of the main features of the LS122CE is its impressive energy efficiency. This air conditioning unit is equipped with inverter technology, which allows the compressor to adjust its speed according to the cooling demands of the environment. This not only results in reduced energy consumption but also leads to a quieter operation, making it ideal for indoor settings where noise can be a disturbance.

In addition to energy efficiency, the LS122CE boasts a sleek and compact design. Its modern aesthetic ensures that it can blend seamlessly into any decor, while its space-saving design allows for easy installation in various locations. Whether installed in a living room, bedroom, or office space, the LS122CE provides effective cooling without occupying too much space.

Another notable characteristic of the LS122CE is its advanced air filtration system. The unit is equipped with a multi-stage filtration system that captures dust, allergens, and other airborne particles, helping to improve indoor air quality. This feature is particularly beneficial for those with respiratory issues or allergies, as it helps create a healthier living environment.

The LS122CE also comes with smart technology integration. Users can control the air conditioning unit through their smartphones or smart home systems, allowing for remote accessibility and convenience. This feature enables users to adjust settings from anywhere, ensuring that their space is always at the desired temperature upon arrival.

Furthermore, the LS122CE is designed with user-friendly controls, making it easy to navigate even for those who may not be technologically savvy. The intuitive interface allows for straightforward adjustments to temperature settings, fan speeds, and modes without hassle.

In summary, the LG Electronics LS122CE air conditioning unit is a remarkable combination of efficiency, modern design, advanced air filtration, and smart technology. These features make it a reliable choice for those seeking superior cooling performance while ensuring a comfortable and healthy indoor atmosphere. With its innovative characteristics, the LS122CE stands out as an exemplary model in the air conditioning market, addressing the needs of today's consumers.
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