heat and air conditioning
#Ductwork_Installation. #How_to_Install_Ductwork in a House. #DIY_CAM
You will need some basic tools to perform your #air_duct_installation. Most of them are inexpensive and easy to learn how to use.
The air duct installation process begins with proper hvac #duct_system design. This is a computerized process of determining the size of hvac equipment for the home as well as designing the duct system. The result is a duct layout plan which shows the size and location of ducts and registers for each level of the home.
Once you have your duct plan, the "rough-in" stage of #air_duct_installation can begin by cutting holes in the sub floor for the ducts and registers. The size and location of supply registers is shown on the duct plan. It is a good idea to keep the holes, for the supply registers, about three inches from the wall. The holes should be centered between the floor joists if possible.
The holes for the return air are usually cut through the bottom plate of an interior wall and through the sub floor. A metal frame called a plaster frame is installed on the wall to make it easy to cut the drywall around the return air opening. It should be mounted about three inches from the top of the wall.
After the holes are cut, the furnace/air handler and evaporator coil should be set in place. You can use our furnace installation guide to show you how. Next, the plenum is attached to the outlet of the evaporator or the furnace if you do not have a central ac system.
The plenum is a metal box with one end open and one end closed. They usually are shipped in pieces and have to be assembled. This allows the supply ducts to be connected to the furnace.
Once the plenum is installed, the square take-off collars can be installed. These fittings are attached to the plenum by cutting a hole and then inserting the tabbed portion in the hole. The tabs are bent over and metal screws are added to hold them in place. The collars should be installed so that the top of the #duct that connects to them will be just below the bottom of the floor joists.
Installing the main trunk lines...
The supply #air_duct_installation continues by connecting the metal ducts to the start collars. As the square ducts are installed, it is a good idea to measure and cut holes in the top of the #duct for the branch duct takeoffs. These branch duct takeoffs will be fittings that are attached to the top of the main duct and they fit in between the floor joists. Their base is square and their outlet is round. Like the main duct takeoffs, they have metal tabs to bend over to connect them. A screw should be added to each corner to make it secure.
Periodically, a piece called a transition will be installed. This piece is used to go from one size of duct to a smaller size. The #ducts are supported about every eight feet with metal hangers. The ducts are connected to each other by a system known as "s" and "drives".
"S" cleats are pieces of metal that are folded over themselves to make a slot for two ends of separate ducts. Each duct slides into a separate slot. They are usually installed on the top and bottom of the piece of duct.
"Drives" are pieces of metal folded over on themselves and they slide on the sides of the duct to hold them together. Tabs on the drives are bent over after installation to hold them in place.
0:05 - Discription of #Ductwork_Installation;
2:45 - Result of #Ductwork_Installation.
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