The installation of the chimney is done taking into account the execution project and respecting the existing technical standards or the assembly instructions of the product. After you have chosen the best chimney for you, all you have to do is work with a team of professionals! A well-mounted basket is much safer and does not involve risks. Improperly installed chimneys can cause serious accidents and fires, which is why we recommend that you only work with specialists in this regard.
In a horizontal position, before being inserted into a vertical pipe, the chimney cannot be longer than 3 meters, the height of the chimney is calculated from the introduction into the vertical section, the horizontal part is not involved in the smoke removal process, from the exit from boiler, each 45-degree angle shortens the vertical chimney by 0.5 meters, and a 90-degree angle shortens the vertical chimney by 1 meter.
For power boilers:
from 15 to 40 kW at least 5 m
from 45 to 80 kW at least 7 m
from 80 to 95 kW at least 9 m
Above 100 kW is calculated individually as needed
The installation can be done both on the exterior of the building and on the interior. An entrance elevation of the chimney from the aggregate is defined, the elevation of the central branch of the T connection from the heating aggregate. Starting from this elevation, the support base of the chimney will be determined. There are two basic versions - with support on the console and with support on the foundation, which only a specialist can choose correctly.
The elements of the chimney are placed in order, from the base to the top, and the meaning of the direction of the smoke on the product label is respected. This means that the mother side will always be up and the father side will always be oriented downwards so as to ensure the flow of condensate through the inner tube to the special cover for condensation.
The elements must be joined and stiffened with each other with the help of N-type collars attached to each individual element. Fixing collars can be mounted on the wall or on intermediate supports, taking into account the height and diameter of the chimney.
The maximum unanchored height will also be taken into account. A typical structure of a chimney consists of:
- Basic support;
- Condensate collector;
- Visiting mouth;
- T connection for connection with the heating unit;
- Linear elements up to the established height;
- Support and discharge elements;
- Elemente de ocolire;
- Terminal cover.
Starting from the T connection of the chimney, to the boiler, depending on the chosen solution, there are 3 types of connections:
- Double wall elements;
- Simple wall elements;
- Flexible stainless steel connections with special joining elements at the ends.
What you need to know about chimneys:
"Ceramic or stainless steel chimney?"
To say which of the two types of chimneys, stainless steel or ceramic, is better is very relative (although more opt for the stainless steel ones, due to the speed of installation). The essential factor for the optimal functioning of the chimney is its degree of insulation, to prevent heat loss to the outside and improve draft, avoiding rapid cooling of the smoke. It is important that it has, as far as possible, a circular section. It is important not to resort to improvisations, to seek the advice of an expert in the field.
"How can the draft of the chimney be improved?"
To improve the draft of the chimney, one can choose between increasing the height of the chimney or the diameter of its section. Both solutions can be useful, for different reasons. By increasing the height of the chimney, the static depression also increases, i.e. the draft, on the other hand, by increasing the diameter of the section, the head losses, i.e. the obstacles that the smoke encounters on the exit path, decrease. In simple terms, an increase in height leads to an increase in pressure (i.e. thrust), while an increase in section decreases the obstructions present in the smoke exit path.
"Why does smoke come out when I open the door to put wood in?"
A chimney with many curves, horizontal trajectories and inclinations with angles greater than 45°, grows in length but not in height. It results in an amount of air contained by it, even if it is lighter than the external one, with a total weight that exceeds the pushing capacity (pressure) of the external air. If space problems require the presence of curves or horizontal trajectories, they will have to be compensated with a subsequent vertical extension of the chimney (about 1m for each change of direction, inclination, curve, etc.). When the firebox door is opened, a certain amount of air also enters, and if the chimney is undersized, it fails to evacuate the excess air and smoke comes out of the firebox.
"Does overdraft affect functionality?"
A chimney with an excessive draft (oversized chimney) creates difficulties in heating the house, because a fairly high percentage of the heat produced is lost on the chimney. Consequently there is a high temperature of the fumes and difficulties in fire management. Even if the chimney vent is completely closed, the flame is constantly moving, burning, but producing little heat (basically there is a lot of embers in the hearth, but a small flame). In such situations it is absolutely necessary to mount the draft regulator.
"Do atmospheric conditions influence circulation?"
Yes, atmospheric conditions can affect circulation, because weather changes are always accompanied by variations in atmospheric pressure: on sunny days, atmospheric pressure facilitates circulation, on rainy days, low atmospheric pressure makes circulation difficult. Conversely, cold days, increasing the difference between the temperature of the smoke and that of the external air, favor circulation. Petru, to avoid repercussions on the system due to these fluctuations, a draft regulator will be installed that opens and/or closes the air intake flap.
"Insulated or uninsulated chimney?"
The draft is all the better as the smokes passing through the chimney remain as warm as possible. For this reason, the chimney must have good thermal insulation. Another important reason for insulating the chimney is to avoid the temperature of the fumes falling below the condensation threshold (dew point). It is also important that it be equipped with a condensate collector at the base.
"Does the height of the chimney depend on the altitude?
In general, an installation placed at sea level needs a shorter chimney. In an installation located in the mountain area, the height of the chimney will be higher, because the higher the altitude, the lower the atmospheric pressure.
"The Chimney and the Optimum Operation of the Hearth."
The chimney is important to have an optimal operation of the hearth. For its proper operation, there must be a perfectly thermally insulated chimney, with smooth internal walls (to avoid friction of the smoke flow with its walls), preferably of a circular cross-section, suitable for the power of the boiler (diameter of the chimney section determined after dimensioning), built vertically, without curves and repeated changes of direction, horizontal trajectories, etc. Horizontal trajectories should be avoided.
"What is natural circulation based on?"
The natural draft is determined by the height of the chimney and the difference between the density of the combustion fumes and that of the outside air. In fact, the warmer the smoke, the less dense it is, the less dense it is, the lighter it is, so much easier to be "extracted" from the chimney by the outside air.
"Does chimney height affect draft?"
The height of the chimney directly affects the pressure of the combustion chamber, in general, the higher it is, the greater the depression created. If the chimney is too high, the fumes, cooling down, can themselves be an obstacle to their own exit. It is good for any chimney to be well sized and comply with the height regime imposed by the standards.
"Does the chimney smell bad?" "Does the chimney smell bad?"
I think we've all had the opportunity to smell an unpleasant odor on our breath or someone else's. Bad breath is a pretty good indicator to brush your teeth. A similar problem can also be encountered by owners whose chimneys have a heavy "breathing". This foul, heavy smell is given off by the creosote accumulated during the cold season. At first, the smell is similar to the damp smell of a cave. The heat and humidity of summer tends to make the smell worse. A chimney smell could be an indicator of big problems. For example, creosote buildup that causes unpleasant odors is a serious fire hazard.
"If the fireplace works with gaseous or liquid fuel, is it necessary to clean the chimney?"
Even if burning these fuels does not involve soot deposits in the chimney, there are many other problems. For example, the chemical attack of acid condensate. It can affect the optimal functioning of the chimney. how? By blocking it with bricks detached from the chimney, and periodic cleaning can lead to solving these problems.
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