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When it is necessary to install new chimney cap?
Sometimes simple visual inspection gives you the answer.
Guess what is missing here...
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| ... do you know? |
and here...
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| ... do the owners know? |
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To carry the fumes and air pollutants from the stove or hearth effectively and safely
The chimney flue liners must be designed so that:
- they have the same inner diameter along the whole chimney;
- chimney liners should be as vertical as possible, the deviation from the vertical run shall not be more than 15 degrees but can never exceed 30 degrees in one segment;
- the non-vertical (slant) segment of the chimney flue liner must not meet (run through) any of the roof framing components;
- the flue liner should be either round-shaped or square. If it must be a rectangular chimney flue liner, the long/short side ratio should not exceed 1,5/1.
[SHOP1]
The minimum chimney flue liner diameter
The minimum chimney flue liner diameters (based on European EN norms) are as follows:
- 100 mm (3,94 inches) for the gas stoves;
- 110 mm (4,33 inches) for the liquid fuel burning stoves;
- 120 mm (4,72 inches) for the solid fuel burning st...
As all exhaust gasses contain certain portion of water (in the form of steam), usually around 10%, the chimney flue has to be hotter than 60?C (which is the condensation point of the flue gas with 10% of water) in order not to condensate the gasses. But if the hot flue gas meets with cool (much cooler than 60?C) air in the upper part of the chimney, it
is forced to condensate and pours back to the chimney liner. This often happens when just heating the stove. If the condensate is not neutralized (in the built-in collector with carbon absorbent) it starts to gather the sulfur and carbon oxides from the air and at the end of this chemical reaction we have got the carbon and sulfur acids that corrupt the mortar of the chimney liner and masonry of the chimney.
[SHOP1]
The carbon based condensate is
often called a creosote. Creosote is usually of black color and can appear in several forms; from black powder soot (that is inflammable, can explode and produce t...
The fireplace inserts vs the hearth systems (hearth stoves)
Generally, you can decide to install either a fireplace insert or a hearth (hearth stove).
Gas or wood fireplace inserts are part of the fireplace itself, they are not shifted in front of the fireplace. As part of the fireplace, fireplace inserts usually have the top exhaust opening with the direct connection to the chimney liner.
The similar situation you have when using the electric or pellet stoves and hearths (burning the agricultural waste like straw or wooden sawdust squeezed into pellets).
Hearth stoves on the other hand are not part of the fireplace itself, they are standing in front of the firing place, have the exhaust openings in their rear part and they are connected to the chimney (chimney liner) over a T-shaped joint.
In both cases, the outer shell of the fireplace stove inserts drives the heated air to the room.
Heat distribution systems
If y...
Imagine... an everyday´s evening in your large, warm living room. You, sitting in your most comfortable chair with your feet on the stool and with the glass of 12 years old whisky in your hand, after the day full of buying and selling of stocks, shares, Fortune 500 companies, this and that. Just relaxing and watching the flames playing with the wood in your fireplace. Your beutiful girlfriend comes unseen to you from the kitchen with two delicious caviar cocktails, she gives you a huge kiss and whispers to your ear: "Waaaake uuuuup you old do-nothiiiiing! Stop smiling like an idiot dreaming, get off that sofa and wash all the bloody dishes in the siiiink!!!"
Just a dream? As for that flames and wood games not that unreal.
If you decide to enhance your house (or even a flat) with a fireplace or stove you should know there are tons of stoves and fireplaces to choose from.
The gas and wood fireplace stoves
The gas fireplace stoves or wood fireplace stoves are usuall...
