Are stack and chimney the same?
A flue-gas stack, also known as a smoke stack, chimney stack or simply as a stack, is a type of chimney, a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air.
Should a boiler flue be sealed inside and out?
The flue should be properly sealed on both sides After the latest regulations, it’s absolutely essential that your flue will be sealed properly on both sides. This is something you should watch for, as some companies may be tempted to take shortcuts. It should be sealed using sand cement or equivalent material.
What is the point of chimney pots?
What is a Chimney Pot? A chimney pot is an extension that can be visibly seen on the topmost part of the chimney’s smokestack. Its purpose is to elongate the smokestack to produce a better draft for combustion.
Does boiler need ventilation?
Although the boiler itself doesn’t require ventilation, the waste gases produced by the boiler need somewhere to go. They are expelled via a flue that leads outside.
Why does my boiler flue drip?
The main cause of leaking boiler flues: The majority of installed boilers are condensing. This avoids it running back to the boiler where it could corrode the heat exchanger. If a flue is not installed correctly this causes problems as the condensate waste is very acidic.
Why does a boiler have to go up the chimney?
With this being the case, it meant all properties with thick walls could only fit boilers with the flue (a long, flexible metal liner) going up through the chimney. Boilers fitted this way were called open-flued appliances, which meant the boiler took its air from the room and fumes naturally drifted up the chimney.
Can a chimney stack be left in place?
The danger of an unsupported chimney breast. If such removal works do take place, the chimney breast at ground floor level, although no longer useable, can be left in position. However, within the roof space, the chimney stack remains, unsupported now by anything below it on the floor beneath.
Can a GreenStar boiler be piped down a chimney?
Your chosen boiler (for example, the Greenstar FS 30CDi or FS 42CDi) can be fitted or piped just like a regular boiler, but instead of a concentric flue going through the wall with a 100mm duct drawing in air, and a 60mm duct expelling the fumes, a concentric flue goes from the boiler to the chimney.
Is there a chimney in the back of the House?
Whilst the chimney breasts were intact within the main body of the building, both at ground and first floor level, to both reception rooms and the corresponding bedrooms above, there was a chimney stack, barely visible, to the rear of the property that could only just be seen from ground level.
With this being the case, it meant all properties with thick walls could only fit boilers with the flue (a long, flexible metal liner) going up through the chimney. Boilers fitted this way were called open-flued appliances, which meant the boiler took its air from the room and fumes naturally drifted up the chimney.
How tall should a chimney stack be for a gas boiler?
Generally more the height of the chimney, higher the natural draught, but blindly we cannot decide and increase the height as cost considerations, wind forces of the area will play a vital role. Actual height calculated and the height declared by local regulation, which ever higher is to be followed. 1 Inch = 25.4 MM, 1 Foot = 0.3048 Metre.
Your chosen boiler (for example, the Greenstar FS 30CDi or FS 42CDi) can be fitted or piped just like a regular boiler, but instead of a concentric flue going through the wall with a 100mm duct drawing in air, and a 60mm duct expelling the fumes, a concentric flue goes from the boiler to the chimney.
When do flue gasses move up a chimney do they condense?
If flue gasses move up a chimney too slowly, they will condense. Also the opposite is true; they condense if moving too quickly. The correct “speed” depends upon your connector sizing and rise, and the height and size of your common vent (chimney).
