Use flare nuts to secure the 2 copper pipes from the indoor unit to the outdoor unit as per the instruction manual. Connect the power cable that runs from the indoor unit to the outdoor unit as well. Finally, connect the power supply to a designated outlet. If necessary, you can trim the copper pipes to eliminate excess.
Part 3. Bleed the air and humidity from the refrigerant circuit. Remove the caps from the 2-way and 3-way valves and from the service port and connect a vacuum pump hose to the service port. Turn the vacuum on until it reaches an absolute vacuum of 10mm Hg. Close the low pressure knob and then turn off the vacuum.
Test all of the valves and joints for leaks, then disconnect the vacuum. Replace the service port and caps. Affix the piping to the wall with clamps. Follow the directions in the manual to ensure the clamps are spaced adequately. Seal up the hole in the wall using expanding polyurethane foam. Spray expanding polyurethane foam into the hole you drilled to feed the cable and piping through the wall.
Make sure the hole is completely sealed to prevent hot air or insects from getting through. Let the foam dry as per the instructions on the label before turning on your air conditioning. Turn on the unit and enjoy the cool air! It should only take a minute or 2 for cool air to start blowing into your home.
Victor Belavus Air Conditioning Specialist. Victor Belavus. Most homeowners shouldn't do extensive maintenance themselves—hire a professional for that. However, you should be replacing your filters at least every 3 months, and inspect your outdoor condenser for any debris, as well. I would also recommend covering your AC condenser for the winter to protect it from snow.
Not Helpful 19 Helpful Include your email address to get a message when this question is answered. By using this service, some information may be shared with YouTube. Provide a dedicated power outlet for your air conditioner.
Helpful Not Helpful Always follow the manufacturer's instructions that come with your split system air conditioner. Helpful 2 Not Helpful 0. Since a split system AC is ductless, it's less susceptible to air leaks, which means it's often a more energy-efficient solution.
Helpful 0 Not Helpful 0. Make sure to choose the proper size air conditioner for your home to ensure it's energy efficient. Check your outdoor condenser for debris and replace your air conditioner filter regularly—at least every 3 months.
If you want a split unit system that can both cool and heat your home, get a split system heat pump, or mini-split. These units act as both air conditioners and heaters.
Department of Energy Official site for the U. Department of Energy, which provides resources related to energy safety, conservation, and efficiency Go to source. Do not allow any wiring to touch the compressor, refrigerant tubing, or any moving fan parts. Helpful 3 Not Helpful 0. If you live in a country where it is legal to install a split system air conditioning unit without professional qualifications, you must still follow all municipal codes for electrical wiring and other aspects of the installation.
Helpful 30 Not Helpful It is illegal to install these systems without the appropriate qualifications. You Might Also Like How to. How to. Air Conditioning Specialist. Expert Interview. More References 3. There are two types of central AC units: split-system and packaged. A split system involves an outdoor unit and an indoor cabinet, while the packaged type sits in a cabinet either outside or on the roof of your home. Packaged units are the ones which can also function as a heater with the addition of electric heating coils or a gas furnace.
Of course, choosing the right size system will also impact your energy costs, so picking the appropriate system is crucial. Hiring a professional eliminates the need for you to do anything other than sign off on the work and pay the bill.
In most places, the local government requires permits for many home improvement projects, including replacing or installing large-scale appliances like home heating and cooling systems. Contractors and HVAC professionals can obtain the proper permits for you, making the job smoother concerning timelines and getting things done quickly. With most new installs, HVAC pros offer maintenance plan s for these systems.
You may also need to finance the pre-installation work, potentially including pouring a concrete slab or making modifications to fit the new assembly on your roof.
However, the professional installer will handle the details of the job. While rural living has many perks, getting items delivered and installed is not one of them! For those itching to do a DIY job, there are a handful of perks to going it alone. Here are the top positive benefits of installing your new AC unit on your own. While the cost of the AC unit is likely higher when you purchase it on your own many companies enjoy significant discounts with AC unit manufacturers when they buy directly from the brand , you will save on installation costs when doing the job yourself.
Many homeowners enjoy completing projects on their own because it requires them to learn more about the materials and processes used. If you plan to maintain your own AC unit, it makes sense that you will want to install it from the ground up. While most HVAC companies will recommend a specific brand or type of AC unit, homeowners who source and install their own have the ultimate control over the process.
If you find a brand that you like but your local HVAC place does not carry it, you can go DIY and still get the specific product that you want. Especially for homeowners who are unfamiliar with working on their home and its electrical systems, it can be challenging to navigate the permit system for a new AC unit.
Most areas require permits for both the units themselves and any housings or platforms you need to install to put them in. You also must have the same certification card to purchase additional refrigerant for a new unit that may be improperly charged. The easiest place to find a central air conditioning unit to buy is by going online. For a house that needs ducts, the costs and work time double. But a contractor experienced in retrofitting can cleverly hide ductwork behind walls, in the back of closets and up in the attic with minimal cuts into walls and the ceiling and very little mess.
The first order of business — and maybe the most important decision in having central air conditioner installed in your home — is selecting the right equipment. All cooling contractors should start their evaluation of your house by performing an Air Conditioning Contractors of America Manual J load calculation. This determines the heat gain your home is subject to.
The calculation is relatively easy to perform and will reveal what size unit you need. Move on to another contractor if the one you're considering wants to determine the right unit for your house solely on experience.
Though strongly influenced by where you live, several factors affect the size unit required, including the amount of wall and attic insulation you have; the types and placement of windows and doors; and the orientation of your home to the sun.
The calculation can also alert you to the possible benefits of upgrading the insulation in your house. By making your home more energy efficient, you may be able to reduce the size of the air conditioner you need. One ton equals 12, Btu per hour. Why is getting the proper size unit so important? An undersize unit won't be able to cool rooms down completely on the hottest days and will cost more to operate because it has to run longer than a correctly sized unit.
An oversize compressor also costs more to operate because it simply takes more electricity to run a bigger unit. And an oversize unit doesn't lower humidity effectively. That's because it cools the air so quickly that it shuts off before it has a chance to circulate the proper volume of air past the coils to extract the necessary moisture. The result is a room that doesn't seem as cool as the temperature indicates.
In fact, the room can feel clammy and damp. After determining the size of the unit, your contractor should talk to you about efficiency, which is expressed by the seasonal energy-efficiency rating SEER. The higher the SEER, the less it costs to operate. These units have lower operating costs, tend to be higher quality, have more safety features, better sound shields and lower voltage requirements.
In general, the higher the SEER, the higher the initial cost for the unit. Next, you must decide what type of system to buy. There are two kinds. A "package system" gangs the condenser, which cools the refrigerant and exhausts warm air, with the fan-and-coil system, which cools and blows the air. The ducting connects directly to the unit. This is essentially a large wall air conditioner with ducts. But package systems are rare. With a "split system," the condenser is outside the house and the fan-and-coil system are inside; they're connected to each other by pipes that carry refrigerant.
If you have a forced-air furnace, the refrigerant pipes are connected to a cooling coil system fitted into the furnace air handler.
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