Yes, seemingly very ironic. The thing that has been 'troubling' me all through this discussion is that Dimplex are an extremely long-established and, I thought, very respected and 'reputable' company. Do you think it's just possible that 'they' (or, at least, 'those that matter' within the company) actually believe what their material (as being discussed here) seems to be 'misleading' the general public into believing?
Indeed. You remind me of that discussion I had with a Technical Support guy at MK, in my attempts to make some sense of what they were saying about the 'rating' of a double socket. The chap told me that he didn't understand the documentation, either, excusing that by explaining that most of their 'Technical Data Sheets' were written by the Marketing Dept .... and I would always have regarded MK (like Dimplex) as a "well-respected and reputable" company!They have a Marketing Department, who are doing what they think they are paid to do, i.e. creating demand. Marketeers are not usually electrical engineers, even in large electrical manufacturers.
I have a Myson and yes very good but there are problems too. We found the fact that it cools down quickly means the room gets cool before central heating kicks in again. It has it's own thermostatic control if heat is not required the water simply passes through the device without being cooled which with the old central heating system worked fine. But with the new condensate system hot water being returned to the boiler will turn the boiler off. So to work the Mysons have to be piped in series not parallel so with a house full of Myson radiators all works well but with one odd one there is a problem.Yes there is, just the other side of the wall in the kitchen directly where the new heater will go, put there deliberately for a radiator in the conservatory. HoweverAssuming she has it, is there a CH pipe relatively near the room?
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1. When the conservatory was built, it was part of a larger kitchen extension project, and the LABC inspector said that we could not have a radiator connected to the central heating system installed. ...
2. There isn't a lot of space available, just about the size of a wall mounted electric convector, so only a small radiator would be possible anyway.
The conservatory heating doesn't have to be completely independent, but it must be independently controllable. Whether your existing pipework is sufficient is unknown but it may be possible to run new pipe(s) back to the zone valve and put the conservatory on its own zone.
A fan-assisted convector ('myson') has a high output in a small space.
http://www.myson.co.uk/products/slim_line_rc.asp#tabbed-2 is 4.5 kW. Other manufacturers are available.
Is that not also true of 'old' (non-condensing) boilers (like mine!)? Something certainly turns the boiler off when the rads don't require any more heat, and I can't think what it can be other than the return water temperature....which with the old central heating system worked fine. But with the new condensate system hot water being returned to the boiler will turn the boiler off.
I found the reference, I was given which says "There should be an independent heating system with separate temperature and on/off controls."The conservatory heating doesn't have to be completely independent, but it must be independently controllable.
That makes sense - but I would interpret it as simply explaining that what was meant by "independent heating system" is that is should have separate temperature and on/off controls - NOT that it had to be physically 'independent' in any other sense.I found the reference, I was given which says "There should be an independent heating system with separate temperature and on/off controls."The conservatory heating doesn't have to be completely independent, but it must be independently controllable.
As above, that's not how I would interpret the requirement.The LABC inspector said that it was not an "independent system" if it was linked in anyway to the main central heating.
That'a presumably the LABC inspector's interpretation - but, as I said, I don't think it would be mine. If you installed an identical boiler next to the existing one, and used that just for the conservatory (with its 'separate controls and on/off switch'), the inspector would presumably have been happy - but how does that differ, in any rational sense, from using the same boiler but having separate controls (temperature and on/off) for the conservatory?Oxford dictionary definition of independent: "Not connected with another or with each other; separate:" ... If two heating systems share one boiler are they really independent? In this case, the conservatory heating even with its own controls is still dependent on the central heating boiler.
No more than if the heating was all electric, and it all depended on the same CU.If two heating systems are "connected" to one boiler are they really independent? In this case, the conservatory heating even with its own controls is still dependent on the central heating boiler.
I was thinking that maybe you could have a HW supplied fan heater - "hydronic" is the ridiculous word to search for.Having said that, for our circumstances, separate heating is probably more practical anyway, so it's not really an issue for us.
Only in that, in the case of a shared boiler, the conservatory controls usually can only turn the conservatory heating 'off' independently, but not 'on' independently.If you installed an identical boiler next to the existing one, and used that just for the conservatory (with its 'separate controls and on/off switch'), the inspector would presumably have been happy- but how does that differ, in any rational sense, from using the same boiler but having separate controls (temperature and on/off) for the conservatory?
Well, that's obviously what 'we' all know - but did they acknowledge at all that their material is potentially misleading by easily being interpreted as saying that there is a 30% saving in keeping a room heated?I got a reply from Dimplex explaining what they say they they mean. ... when they say "heating a room" they don't mean keeping a room heated, and they have nothing to show that you can keep a room warm for 30% less. ... They just mean that this heater has low thermal mass, so there is not a delay at switch on (and obviously, at switch off) so the temperature will change rapidly up and down.
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