when our heating system was changed from a back boiler to a wall mounted one we had the back boiler removed so as to revert to a 1st class chimney, so we could have a coal fire if required, and the flue liner was taken out.
A flue liner protects the bricks or masonry that makes your chimney for your fireplace. It can also protect any wood that it is close to. Flex King offers a flue liner for around $400.00.
The correct flue classification for a solid fuel boiler connected to a brick flue is typically classified as Class 2. It is important to ensure that the flue meets the necessary building regulations and safety standards to prevent any potential hazards. Professional installation and regular maintenance are recommended to ensure the system operates safely and efficiently.
the flue pipe from my boiler runs directly to the hole in the chimney
"A clay flue liner is a liner for your fireplace. This would be helpful in case you needed to clean your chimney it makes it easier to clean, and less likely to cause fires."
A flue liner is a flexible sleeve inside the pipe that carries the combustible products, such as smoke, up from the fire away from the living area, and into the atmosphere, outside the house. A liner is needed in case the flue is cracked or damaged, causing the smoke to stay in the house, or causing cold wind from the outside to come into the house. A flue liner is added protection to keeping the house safe from fumes.
plumbing your toilet into the boiler
ATMOSPHERIC BOILERa boiler on which combustion air/flue gases are drawn through the boiler without a fan.(Taken directly from the Crown Boiler Co. web-site.)
More than likely a local business specializing in chimneys and/or rooftops. These professionals can give more detailed information on the size and shape of flue liner needed. These can be found in the shops of chimney stores and on online companies that sell flue liners.
If the boiler fuel contains Sulphur (and most do) combustion products in the flue gas will include Oxides of Sulphur (SO2 and SO3). SO3 combines with water (H2O) to make Sulphuric Acid (H2SO4). If the temperature of the flue gas falls below the dew point, the combination of the acid with the moisture in the flue gas causes corrosion of the flue gas duct work. Bypassing the economiser in the early stages of a boiler start keeps the flue gas temperature above the dew point.
Economizer is an accessory of boiler that recovers the waste heat from the flue gas blown out of the boiler. Thus it actually "economizes" the operational cost or in other words, improves the efficiency of fuel utilisation in the boiler. The temperature of the flue gases ( the mixture of burnt fuel & air ) depends up on the steam pressure ( temperature more precisely ). Higher the steam pressure generated, the higher is the flue gas temperature. Economizer is a heat exchanger which exchanges heat between water ( which is fed in to the boiler ) & the flue gas. It means it increases the temperature of the feed water using the otherwise wasted heat of the flue gas. So the water entering the boiler has higher temperature compared to the one without this economizer. This higher temperature of water requires less amount of heat to generate steam so the operation becomes "economical". Similarly the economizer can also work to heat up the air entering the boiler through the flue gas heat, instead of heating the water.
The correct flue classification for a solid fuel boiler connected to a brick flue is usually Class 1. This type of flue is designed for solid fuel appliances and provides a high level of safety and performance. It is important to ensure that the flue meets building regulations and is installed correctly by a qualified professional.