Air Conditioning Repair

HVAC, which stands for Heating, Ventilation, and Air Conditioning, is a system that keeps an indoor environment comfortable by regulating both airflow and ventilation.  In addition, an HVAC system keep mold away, along with other types of harmful organisms by controlling air.  After the right size and type of system has been chosen, the next step involves HVAC installation, which is something that should be done by a professional.  The following are specific steps that would need to be followed for proper HVAC installation.

Load Calculation

The first step for HVAC installation has to do with the load calculation.  With this, the design would be determined to ensure the right system is being chosen for a particular room.  After all, the size of the HVAC system should be efficient, not under or over working.  There are a number of online resources where the load calculation can be completed.

Fan Coil Unit Location

From there, it is important to find the right location for the fan coil unit.  People need to remember that this can be in an unconditioned space, which might include a garage or attic.  As long as the space for the coil unit is protected from the elements of weather and any city or building codes are met, there should be no problem.

However, many people will place the fan coil unit in a space where there is air conditioning.  Typically, the best options would include a laundry room, utility room, closet, or perhaps somewhere in the basement.  Then, the type of cabinet would be decided on, which includes vertical and horizontal choices.

In addition to the fan coil unit, the placement of the return air filter box and the duct also has to be determined.  Then, there will be a nine-inch plenum, refrigerant lines, condensate drain line, and air supply tubing, which also need to be considered when the overall location for HVAC installation is discussed.

Return Air Opening

The next step of the HVAC installation process is to cut the return air opening and find the right location for the air duct.  The key here is to make sure the return air box is not in a room where there is no duct with a 180-degree bend.  The opening cut would then be determined based on the dimension and size of the box.

Platform

There has to be a platform for the fan coil unit and while there are different options depending on the type involved, most would need 2x8-inch stud lumber along with .5-inch plywood for the overall construction.  The key here is to make sure the coil is suspended, which can be done by using .25-inch rods that are threaded.

Plenum Ring

For HVAC installation, this ring needs to be placed a couple of inches below the bottom level of the fan coil unit, which is attached to a square opening and secured with four screws.

Condensate Drain

The next step of the HVAC installation process is to make sure the condensate drain trap is properly connected to the fan coil unit.

Refrigerant Lines

Then, the HVAC installation involves the refrigerant lines going from the outside condensing unit to the fan coil unit on the inside.

Supply Tubing/Plenum Duct

When reaching the point of the HVAC installation where the distribution components are installed, a system layout with sizing parameters should be considered.  Additionally, for the installation of the plenum duct, people need to ensure that the branch, tees, and elbows all run no less than 18 inches from the fan coil unit to keep pressure from dropping.  The plenum duct also needs to be cut to the needed length.

Terminator Outlets/Sound Tubing

Next on the list for HVAC installation is that these needs to be installed.  The location for the terminator outlet needs to be so it is about five inches out from the edge of the wall.  However, it the HVAC installation will be in the corner of the ceiling, and then it needs to be three inches away.  Then, the outlet and sound attenuating tubing would be assembled, which is accomplished by taking the connectors and fitting them and turning until secure and tight.

Supply Tubing

The final step of HVAC installation is that the supply tubing has to be installed.  It is important that there be no dramatic bends in the tubing for both supply and attenuator.  In most cases, this type of tubing is sold in 100-foot lengths so it would need to be shortened specific to need.  However, once cut, the connector for the tubing is slipped over the cut end, insulation and the Mylar scrim are tucked so they go under the connector on the collar, and then tape goes around the connector, which secures it.

	11-08-2008 16:47
	good thanks for the good tips - used and saw the benefits.

jason