Recent content by Logidex

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    Combi in series with unvented hot water cylinder

    Thanks Muggles. Already asked that first question and know that new flue system needs to be replaced even if new boiler is from Ideal. The property is a rented flat with tenants in situ. So wanted to keep work mess and duration to minimum.
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    Combi in series with unvented hot water cylinder

    Hi, I have a 2 bed flat which has an Ideal system boiler coupled with an unvented hot water cylinder. Due to it's location, the boiler has a twin flue setup. The boiler has packed up so I need to have it replaced with another twin-flue boiler. This limits the choice somewhat and I'm thinking...
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    Ariston Eurocombi SX20 DHW cycling between hot and cold

    Thanks for all your advice. I did some further testing and was able to establish that when the burners shut down, all the sensors (flow switch, thermostat etc) are still calling for heat. From this I'm concluding that the problem isn't mechanical (blockage or scale) or to do with the water...
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    Loft floor joists for long span

    Thanks all. I have been granted planning permission for the project. It came as a pleasant surprise given the size of the extension: two double bedrooms, two en-suites, double hip to half gabled conversion, large box dormer to rear and a more normal sized pitched roof dormer to the front...
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    Loft floor joists for long span

    I've only paid architect/SE for the planning app drawings so far so I think he will be happy to check calcs for floor joists. There is another block wall in room below about a third of the way in from one end but it's not load bearing.
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    Loft floor joists for long span

    Again, thanks for replies Architect/SE specified 75x200 C24 doubled up, not 50x200. Does this mean that what the architect has specified is well up to the task? I'm liking the idea of flitch beams with 3mm plates. Would it also means using less thick timber e.g. 50x200 either side of the...
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    Loft floor joists for long span

    Thanks for replies. Architect and SE are one and the same. There will be a large flat roof dormer above the two rooms. The face of the dormer will be built off the rear wall of the house. The cheeks will be built off flitch beam (parallelt to floor joists) in the larger room and tripple...
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    Loft floor joists for long span

    Hello, I've seen that there are a lot of threads regarding floor joists for a loft conversion. But I couldn't find one that discussed the issue I am concerned about. I'm going through the process of designing a loft conversion which will have two very large rooms. One of the rooms will...
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    Ariston Eurocombi SX20 DHW cycling between hot and cold

    Thanks. I forgot about the flow switch. DHW thermostat senses temp of heating circuit (rather than DHW). When DHW stat is on max, temp of heating circuit rises to 70C before burner is switched. With DHW stat on min, temp reaches about 50C before burner is switched off. Unless I'm...
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    Ariston Eurocombi SX20 DHW cycling between hot and cold

    I'm surprised to learn that it's normal to exclude the boiler in a power flush. I would've thought it was essential to include it unless there's a good reason for not doing so perhaps due to chemical incompatibility. Power flush was done by gas safe plumber. He's says he did the boiler as...
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    Ariston Eurocombi SX20 DHW cycling between hot and cold

    Thanks for prompt replies. Interesting point about boiler should be on constantly if HW tap is on full. Certainly would imply heat from primary circuit is not being tranferred efficiently to DHW circuit. Due to age of boiler, it has the mini tank type heat exchanger. I thought the...
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    Ariston Eurocombi SX20 DHW cycling between hot and cold

    I know this is an old boiler. But I'm hoping that the issue I am experiencing can be resolved without resorting to replacement of boiler. CH works fine. The problem is with DHW. Open HW tap and boiler fires up. Water at tap gets hot. Temp gauge rises to about 70C and burner goes out (as...
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