Open flued boiler?
- Thread starter Agile
- Start date
The only gas ones left I think are commercial only and fall outside SEDBUK Ideal, Potterton etc. but output probably way too high. Grant do oil condensing CF but if London no use and solid fuel Trianco only do up to 80 version.
Halstead do the type E flue kit and as said is a flexible flue liner that comes in l10, 20 & 30 M lengths that can be cut to suit.
Make sure you order the flexible liner as well as it does not come in the kit
The boiler end then takes in the combustion air so needs venting as per open flue boiler. The boiler end kit looks like a horizontal vertex flue terminal.
Was very impressed by it at installer live. Suprised you didn't see it when you were there Tony
Make sure you order the flexible liner as well as it does not come in the kit
The boiler end then takes in the combustion air so needs venting as per open flue boiler. The boiler end kit looks like a horizontal vertex flue terminal.
Was very impressed by it at installer live. Suprised you didn't see it when you were there Tony
At the Halstead curry evening they said the twin flexible ( balanced ) kit was about £500 for a three bed semi.
For five floors that would be about £1500 and unknown costs to reach the chimney pot five floors up!
I was hoping for an open flued boiler which could use the original flue!
It does seem unlikely though because of the condensation aspect.
Tony
For five floors that would be about £1500 and unknown costs to reach the chimney pot five floors up!
I was hoping for an open flued boiler which could use the original flue!
It does seem unlikely though because of the condensation aspect.
Tony
Have you considered a Keston boiler with the 50mm air and flue ducts inserted up the chimney? Apparently Keston approve such an arrangement and the flue/air ducting is very cheap and quite flexible. It might even manage to get around the odd bend!
The intermediate joints, being solvent weld, can be considered to be at least as strong as the pipe itself, so effectively you would have continuous pipes throughout the length of the chimney. There may be the option of running the air duct by a separate route to the outside since air and flue terminals do not have to be on the same surface of the house.
The intermediate joints, being solvent weld, can be considered to be at least as strong as the pipe itself, so effectively you would have continuous pipes throughout the length of the chimney. There may be the option of running the air duct by a separate route to the outside since air and flue terminals do not have to be on the same surface of the house.
Kidd do a 25Kw and a 46Kw open flue condensers.
You will need to line the chimney whatever condenser you install though, and this is the difficult bit. You would need either Mr Kidd's own sectional aluminium liner (if the flue was dead straight -unlikely) or something like Rite-Vent Turboflex+.
Although condensing twin s/s liners are called 'flexible' they are only just, really don't like going down chimneys. After loads of grief we are now subcontracting the flues on the very large houses.
Whilst Keston do allow their flues in chimneys it is a product we would never fit -anywhere. Anyway you would have to find a way of supporting the pipes over that distance, invariably this would mean cutting into the chimney in at least four places.
You will need to line the chimney whatever condenser you install though, and this is the difficult bit. You would need either Mr Kidd's own sectional aluminium liner (if the flue was dead straight -unlikely) or something like Rite-Vent Turboflex+.
Although condensing twin s/s liners are called 'flexible' they are only just, really don't like going down chimneys. After loads of grief we are now subcontracting the flues on the very large houses.
Whilst Keston do allow their flues in chimneys it is a product we would never fit -anywhere. Anyway you would have to find a way of supporting the pipes over that distance, invariably this would mean cutting into the chimney in at least four places.
Good point. Perhaps the pipes might be supported by filling the chimney space with some sort of expanding foam or Vermiculite mixed with cement? In practice it's unlikely that the pipes would really need intermediate support. There's very little weight involved and with fixings at the top and bottom of the chimney it's hard to imagine the flue duct going anywhere. Obviously allowance would have to be made for expansion.
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