Air conditioning installations supply

We supply ,install and maintain all air-conditioning systems from small, medium and large systems. Our field of expertise broadens to air-conditioning equipment such as office air-conditioning to large corporate units. We have an after service follow up on newly installed and exiting equipment. We provide regular servicing of Air Conditioners. Once the rails are built and installed, the coil can be installed into the supply plenum. If the plenum is larger than the coil, a sheet metal pan must be built with an opening provided below the coil.

This opening needs to mirror the bottom opening of the coil for proper airflow from the furnace going through the coil. If the opening is not big enough, or too much air goes around the coil instead of through it, the coil will freeze into a block of ice. This can damage the coil and cause a refrigerant leak by cracking the tubing carrying the refrigerant. Once those are installed, the final step is building the front of the plenum. It is possible to build an access panel door into the plenum to cover the coil.

This is not required by any code or manufacture specification, so it would be up to the installer. In all scenarios, the cover must have holes provided for the refrigerant lines, and then also for the condensation lines to be connected. The type of coil chosen is mostly based on the details of the installation.

Regardless, if the coil is installed per code and manufacture specifications to the existing duct system, can drain properly, and is sealed from air leaks, you will enjoy the same level of comfort. There is no difference in warranty or life expectancy between either type of coil.

The new refrigerant line set is a combination of two individual copper lines. One line is always bigger than the other and is insulated. The bigger line is called the suction line, and the little one is called the liquid line. They come packaged together, rolled in a coil.

It is available in multiple selections of lengths, from feet. You will rarely need more than 50 feet in a residential home. The key is installing the line with as few bends and turns as possible. When these bends are necessary, the soft copper can be bent by hand or a tubing bender. Plastic or copper strapping is common. Galvanic corrosion also called bimetallic corrosion is the breakdown of metal when two dissimilar metals come into contact.

This does take some time to occur. Nevertheless, if allowed to occur, it could eventually reduce the integrity of the copper refrigerant line over time until it causes a leak. After the hangers are installed, the line set can now be put in place.

Typically, an installer will start with the suction line and roll out one end a few feet, leaving the rest of the roll in a coil. They then push the unrolled section through a hole drilled through the band board of the house to the outside, near the air conditioner. Enough of the line is pushed out to reach the service valve of the air conditioner.

Eventually, the installer will connect this line to the air conditioner itself. The hole size will be between After the line is outside by the air conditioner, the line is secured by hangers near the hole and then another hanger back a couple of feet.

The line is then carefully uncoiled and formed along the floor joists up against the trunk line ductwork or a beam, as straight as possible until long radius turns or bends are needed.

Along the way, it gets put into the hangers that have been installed previously, securing it in place. The line set will run from the air conditioner outside to the new indoor evaporator coil on top of the furnace. After the suction line has been installed and secured, the smaller, liquid line is run along the suction line, secured in the same hangers.

A line set should be new, installed as one piece, free from any sharp bends or kinks, and secured with an appropriate hanging system.

There will also be a small, low-voltage control wire that runs from the furnace along the line set to the air conditioner outside. The small existing wire coming from the thermostat to the furnace sends a low voltage signal to the air conditioner to turn on and off when a call for cooling is needed or has been satisfied. Removing the new air conditioner and setting it on the pad is step one. After uncrating the unit, a good installer will inspect for any damage.

Sometimes panels or coils will get damaged in transit. Any damage should be reported to you immediately. However, you always have the right as a customer to not accept the damaged unit and ask for another one. The line set that was installed in the previous step is then formed and fitted to the appropriate service valve on the new air conditioner.

The service valve is a connection point for the line set, and also isolates the refrigerant contained inside the unit. Service valves also allow for the outdoor condenser portion of the air conditioner to be isolated from the indoor coil and line set for future service or repair needs when needed.

Isolating the refrigerant keeps you from having to replace it with all new refrigerant in case of a repair in the future. After the line set is fitted to the service valves, they must be brazed in.

Brazing, a form of welding, is a process using two gases oxygen and acetylene and a filler rod made of an alloy metal and silver to join the copper line set and service valves. The valves are heated to a minimum of degrees Fahrenheit or until the filler rod will flow to weld the connection.

If this process is completed properly, the copper line set, the filler rod, and the service valve are all melted together for a tight, leak-free connection. Filter driers are a key component in the refrigerant system. They serve two main functions.

The most important function of a filter drier is to absorb moisture. The second is to provide physical filtration. When installing a new air conditioner condenser, you must always install a liquid line filter drier into the refrigeration system. Most new air conditioner condensers come with a liquid line filter drier for you to install.

Manufacturers recommend the filter drier be installed close to the expansion valve TXV at the indoor coil, as often as possible. This keeps the TXV protected and keeps the filter drier from being exposed to weather where it could rust.

There is also an arrow for flow direction. This arrow must always be in the direction that is going into the indoor coil. Moisture enters the system in different ways. If a system is not evacuated properly, moisture will exist in it. Moisture can also come from leaks or motor windings. The water can cause corrosion and create failure in metallic parts. Water or moisture can also react with the oil in the refrigerant system. This is called hydrolysis, which forms acids in the system.

Acids, moisture, or any other contamination in the lines will be extremely dangerous to the integrity of your new air conditioning system. All good HVAC companies have strict processes in place for their install teams to prevent failure as much as possible. Any time a refrigerant line is open to the atmosphere, it is vital to install a new filter drier.

This is true of installations as well as service repairs. This brazing process is the same for connection to the indoor evaporator coil. This, again, involves open flames and should only be performed by a trained professional. The gases used in the process are explosive. There is an open flame outside and inside the home. It can be dangerous to the installer, the homeowner, and the home, causing permanent damage without proper training. Following manufacturer and safety guidelines is key.

Preparing the line set for refrigerant in this way is the most important step in ensuring the safety and efficiency of your air conditioner. Sadly, this process is unknown or not followed to most install teams. Not all companies are equal in training or processes, and many contractors lack the proper equipment.

A good HVAC company will have all the tools and processes needed to install the air conditioner professionally and thoroughly. After the line set is fitted properly into the service valves and indoor coil, heat protection needs to be applied. Heat protection can be a heat-absorbing paste, wet towels, or rags.

Anything that would keep the heat spreading into either of the coils is acceptable. If the valves are overheated and the O-rings are damaged, the refrigerant will leak past the valve into the line set, losing the factory charge. From the factory, the air conditioner condenser is prepared, cleaned, and the refrigerant is added.

If the refrigerant is exposed before the process is completed, it becomes contaminated, along with the condenser coil. If this step is performed improperly, all the refrigerant would need to be recovered and the condenser coil would need cleaned and prepared again before any refrigerant could be added.

Most indoor coils have a metering device called an expansion valve that will be damaged if not protected from the heat during brazing. If these get too hot, or any contaminants are introduced, the expansion valve will be compromised and fail to operate.

Once the heat protection is completed, a tank containing a gas called dry nitrogen is hooked up to a regulator and possibly a manifold gauge set. This allows the nitrogen to be purged while brazing.

The nitrogen protects the inside of the copper tubing from oxidizing during brazing. The damage will not always be present immediately. Brazing with nitrogen, when done properly, will give the system maximum opportunity for performance, reliability, and dependability. After the system is brazed in both the indoor and the outdoor components, it must be checked for leaks using the same dry nitrogen, up to a specific amount of pressure. Using the dry nitrogen to pressure test the system achieves three things:.

It is very important to verify with the installation manual provided by the manufacturer what they recommend for pressure. Most systems are designed for PSI when testing. If there is too much pressure added, problems can occur. If the pressure is too high for the O-ring seal, for instance, the nitrogen will bleed into the refrigerant, contaminating it.

In this scenario, all the refrigerant contained in the condenser from the factory will be compromised and will have to be recovered, then the coil cleaned and prepped for more refrigerant.

Typically a system is vacuumed to a minimum of microns. The manufacturer's recommended vacuum is found in the installation manual.

Refrigeration systems are designed to operate with only oil and refrigerant flowing through them. Our atmosphere is made up of oxygen, nitrogen, and moisture. These are enemies to the system's operation and may enter the system during installation or servicing.

Removal of these, along with air or other non-condensable products, is required. This is achieved through the vacuum process when installing the air conditioner. October 5, Nikhil Comforts agreed to do the works of supply of goods and services for agreed price.

This Corporation would act as a coordinating agency for implementing all the projects. Appellant would be supplying various VRF Indoor and Outdoor units, stands, cables etc which would be installed by them. After installation of the said equipment, testing would be conducted to see whether the Air conditioning work was done properly and after successful testing the commissioning would start.

No of notification No. Subscribe to Whats App Updates. Sorry, your blog cannot share posts by email.