Opening A Fireplace Flue
Opening the damper in a fireplace before starting a fire to avoid smoke damage to your home. If youre not sure which position is the open or shut repeat Step 2 to determine the position of the damper.
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Worse yet if you have a gas fireplace burned gas can escape the fireplace and create the conditions for carbon monoxide poisoning.
Opening a fireplace flue. To comply with Building Regulations this will need to be raised above floor level. The damper can be closed or open. Fireplace opening and flue size in-creasing the chimney height in-creases the amount of draft.
Masonry Fireplace Chimney Flue Size Requirements According to the Masonry Institute of America the required flue size for masonry fireplaces burning wood is basically a function of the area of the fireplace opening. If a fire is lit and the damper is closed the gas and debris have nowhere to go but into the house causing a smoky situation. A fireplace flue is the part of a fireplace system that connects the actual opening to the outside.
Every Fireplace has a chimney damper. BUILDING CODES SET MINIMUM FLUE SIZE Once the size of the fireplace opening is set you can determine the appropriate flue size. Before lighting up that firewood ensure the fireplace flue is open or else the smoke and gases will fill up your room.
Often one is made of round or square terracotta pipe stacks or round metal pipe. Its a simple job to form a new one directly on top from in-situ concrete or you might opt for a marble or slate hearth. Flues should also mirror the size of a chimney.
Beside above do all fireplaces have a flue. Opening before lighting a fire is strictly for safety being that this entire design is metal and you risk severe burns if you attempt to adjust the damper after the gas logs ignite. Whatever your taste in fires once you have a clean opening and a freshly swept flue the next job is normally to upgrade the hearth traditionally made from concrete set flush into the floor void.
If the flue is circular then it should be at least one-tenth the size of the fireplace opening. This is a movable plate that sits above the fireplace before the flue. At the fireplace end of the flue is a lever-operated damper device that can be opened to allow exhaust gases to escape and fresh air to enter when the fireplace is in operation.
Building codes typically require a minimum flue size. You can experiment with just how open you want the damper to be but it must be. Attached to the indoor fireplace end of the flue is a damper operated by a lever.
The damper should always be open when a fire is burning in the fireplace. If you pull the lever toward you generally that will open most of the dampers. The most common case is 1 10 of the fireplace opening area but with a minimum size specified.
You turn the handle to a vertical position to open the flue damper and back to a horizontal position to close it. A damper is a lever system found inside the flue that opens or closes to let out combustion gases or block downdraft as appropriate. Before you fire up your gas logs though you need to make sure that the flue is open.
At the same time if the opening of the flue is too wide after starting the fire you end up wasting a lot of energy through convection. You can check this too if. The method of opening and closing the flue depends on the type of fireplace and how it was constructed and installed in the room.
Once the flue is open place. Modern fireplaces often have a handle installed above or inside the opening. The flue has a secondary purpose of allowing fresh air to enter it which aids in feeding or oxygenating a fire.
EFFECTIVE FLUE AREA The American Society of Heating Refrigerating and Air-conditioning Engineers ASHRAE recommends using round or oval flue liners whenever possible. The flue is the open middle of the chimney structure that directs combustion gases from the fireplace or stove out of the house. If you start a fire before opening the throat damper smoke will flow out of the fireplace instead of going up the chimney.
It runs through the chimney and can be made of masonry or metal. The purpose of the flue is to move ash sparks smoke and gas out of the house into the atmosphere. How to get the air draft going to make sure your flames and smok.
The process of opening a fireplace flue is relatively simple. Open the flue damper for a fire. When you want to build a fire open the flue damper first by pulling the chain or shifting the lever.
A handle beside or just inside the fireplace operates the damper. Building codes typically require a minimum flue size expressed in terms of cross-sectional area in relation to the area of the fire-place opening. The UBC allows round flue liners to be only 1.
However generally speaking a rectangular chimney flue size should be at least one-eight of the fireplaces opening.
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