How long can a condensing boiler flue be?
As a general rule, a flue should work effectively when it’s up to 10 metres in length. This is usually based on a standard thickness of 60/100mm. For flues that need to be longer than this, it’s a good idea to increase the thickness to 80/125mm to ensure that the gases are able to escape easily.
How long can a boiler flue run horizontally?
All of Baxi’s, Main’s and Potterton’s system or combi boilers with a 60/100mm concentric flue fitted can be up to a maximum length of 10 metres. If you find that you do need a longer flue run, then the flue size can be increased to 80/125mm, giving you a maximum flue length of up to 20 metres.
How long can an oil boiler flue be?
The effective length stated by the manufacturer can vary from 2m – 6m horizontally and 6m – 12m vertically, subject to the following adjustments: For every bend the length is reduced. For example, the manufacturer may state that the maximum length of the flue is 6m horizontally.
How far can flue be from boiler?
Distance from windows and doors These boiler flue distance regulations help to ensure that harmful gases are fully expelled from your property. The exact distance will depend on the size of your home but, generally, the regulations prevent a boiler flue from being situated within 30-60cm of a window or door.
How long can a condensate pipe be?
The external pipe run should be kept as short as possible to a maximum of 3 metres, taking the most direct and “most vertical” route to the discharge point, with no horizontal sections in which condensate might collect.
Can a boiler flue be extended?
Boiler flue extensions are used to extend a boiler’s flue outlet system, effectively an additional flue length of either horizontal or vertical orientation. Flue extensions are brand specific and must be the same brand as the manufacturer of the flue piping system that is being extended.
How long can a boiler flue be Worcester?
Age Verification With no cutting required, the flue measures 350mm in length but can be extended up to 570mm in total allowing for more flexible installation.
Can I extend my boiler flue?
Can I extend my boiler flue? If you are carrying out an extension on your home, or suspect that your boiler flue is not placed sufficiently away from a window, vent or door, you may need to extend the flue.
Can you run boiler condensate into gutter?
Yes, it is combined as the same drain is connected to toilets – all going into sewer. Ok, so as long at its is insulated from where it exits the building until the gulley if won’t freeze.
What fall should a condensate pipe be?
All pipework should fall a minimum of 2.5° with bends and fittings being kept to a minimum. Where condensate pipework terminates externally to an outside gulley or drain (foul-water only), the pipe must terminate above the water line, but below the grate by at least 25mm, with the end cut at a 45° angle.
What are the rules on boiler flues?
Boiler flues should be positioned at least 75mm below any material that could be damaged by heat, such as guttering. They should also be at least 150mm to the side of vertical drain or soil pipes. The waste gases expelled from the flue can be extremely hot, which could cause external damage.
How long can a Worcester flue be?
Can boiler condensate go into sink waste pipe?
Yes, a condensate pipe can be routed into a waste pipe. This is best done after the trap on the waste pipe in case of blockages.
Where can I run my condensate pipe?
Where should a boiler condensate pipe go? The HHIC states that: ‘When fitting a new or replacement boiler, the condensate discharge pipe should be connected to an internal ‘gravity discharge point’, such as an internal soil stack, internal kitchen or bathroom waste pipe such as sink, basin, bath or shower waste.
How far should a boiler flue stick out?
Under the boiler flue position regulations, the flue has to be positioned a certain distance from any parts of the home that can be opened up such as windows and doors. How far this is will depend on the size of your boiler but is typically between 30-60cm above, below or to the side of an opening.
How many bends can a flue have?
If bends are unavoidable, then there must be no more than four bends in the length of the chimney. A bend should be no more than 45 degrees from the vertical, with the exception that 90-degree factory-made bends or tees may be treated as two 45-degree bends.
How long should a flue pipe be?
Building Regulations recommend a flue system of at least 4.5m in length to achieve this. An added benefit of attaining a certain height with your flue system is the improved draw this will create.
Does a longer chimney increase draft?
Height: the taller the chimney, the more draft it will produce at a given temperature difference.
Is a longer flue better?
Chimneys that are over-sized for the appliance they serve are common, partly because people used to think that bigger is better. Now it is clear that bigger is not better when it comes to chimney sizing. A given volume of flue gas flows faster and has less time to lose heat in a small chimney flue than in a large one.
Can a flue be too tall?
A chimney that’s too tall can result in the heated air cooling off by the time it reaches the top of the chimney stack. This can create a negative pressure inside of the smokestack that pushes smoke and other gases back into the home.