Coal-effect gas fire, flame height?

Nah,not really. We were talking about fires in flues. I then mentioned flueless as i knew it would come up. Although I can't think of a BF quite that low. Was that a wall heate, an old radiant (Valor Unigas) or a flame effect fire.? A BF fire is eve more efficient than a glass fronted chimney fire, and most fires have an output of between about 3.5 and 4.2 on max. Higher efficiency fires tend to continue with this trend,by reducing the input. So 3.65 on a BF does not seem unlikely.
 
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I think I saw a 2.9 kW tiny unbranded one designed to go into the small bedroom sized fireplace.
 
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Err.. 2.9 Output. legend fires are typically 50% efficient.


Took you a few hours researching, Tone. But, err... the input is 6.9Kw:

Legend Fires Prestige - Hole In The Wall Gas Fires - Gas ...
www.qualityfires.co.uk/fireplaces/gas-fireplaces/hole...wall-gas-fires/lege...
The Aura Prestige exudes an air of sophisticated chic. ... The Aura Prestige range offers the ultimate in stylish pra. ... Heat Input, 6.9 KW. Heat Output, 2.9 KW.
 
I have been out for an Indian meal.

Unusually the choice was full so had to go to another conveniently close by where they have the same Wednesday special deal.
 
Missed your last post, tony. Both your posts are pointless as they are, as you say, outputs. The original fire in question being 6.9Kw.

Bored with this now - the comment about you talking about 3kw input fires was a bit of an aside. My main point that you are talking your normal nonsense, and saying only a RGI should touch the coals.

The shame is that you are clearly very good on electronics, and I am sure you are not really dense. But you go off trying to tell punters what they should pay (normally wide of the mark) and always try to criticise and demean every householder asking innocent questions.

Why not just try to help folk, abstain from comment, or point out that it is against the forum rules to give gas advice. Until a questioner starts to get shirty.
 
Fooked if I'd argue the toss about fires with FiremanT!

I've fitted around ten in the fifteen years I've been qualified because its a area for a specialist just the same as fitting a boiler or reading a bus timetable is :whistle:

I'm sure it's straightforward of you specialise in it but the first time I got into chimney types and approved terminations etc I decided I could make a lot more money elsewhere!

OP the whole thread is a bit pointless unless you can tell us what fire it is or post pics ;)
 
Looks like it's a Flavel Kenilworth FHKC37MN2
http://www.qssupplies.co.uk/bathroom-furniture-shower-taps/23269.htm
(Not bought from this supplier, purely for illustration)

Well, just to follow up, the installer has taken a look at the fire, and says that the output cannot be reduced to less than 2.4kW without risking poor combustion. The problem this raises is that it has to be used in on/off bursts, and the only controls are near the floor behind a trim panel, which makes it awkward to have to keep on turning it on and off. In fact, so awkward that it's really impractical to keep on doing that. The controls are a manual gas valve and piezo igniter, therefore it can't be connected to a room thermostat.

The installer made an attempt to clean the staining of the glass, which was unsuccessful. He says it definitely should not have stained so quickly.

The owner says that when ordering she stipulated a fire which would be energy efficient and suitable for the room size in question, and I suggested she take this up with the supplier as in its present form it is neither energy efficient nor very suitable, therefore it is not fit for the customer's stated purpose. We'll see how this plays out but it seems to me that the supplier needs to rectify the issues which have been found with it. There is a similar model which can take a room thermostat, and that might be one option.
 
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Well, just to follow up, the installer has taken a look at the fire, and says that the full output is 4.2kW and cannot be reduced to less than 2.4kW without risking poor combustion. The problem this raises is that it has to be used in on/off bursts, and the only controls are near the floor behind a trim panel, which makes it awkward to have to keep on turning it on and off. In fact, so awkward that it's really impractical to keep on doing that. The controls are a manual gas valve and piezo igniter, therefore it can't be connected to a room thermostat.

The installer made an attempt to clean the staining of the glass, which was unsuccessful. He says it definitely should not have stained so quickly.

The owner says that when ordering she stipulated a fire which would be energy efficient and suitable for the room size in question, and I suggested she take this up with the supplier as in its present form it is neither energy efficient nor very suitable, therefore it is not fit for the customer's stated purpose. We'll see how this plays out but it seems to me that the supplier needs to rectify the issues which have been found with it. There is a similar model which can take a room thermostat, and that might be one option. I'll be able to get a look at it for a model number or photo early next week.

I have never seen a fire that can be controlled by a room thermostat, but at saying that I take nothing to do with gas fires except to check existing ones while doing a Landlords Gas safety inspection, I would go with FiremanT`s advice on this one he is the most experienced on fires that I see on this forum
 
The thermostat was just a suggestion. The basic issue here is that this model has an extremely limited control range, in fact you can only vary the output by 800W. So, not a question of adjustment, but a design limitation it seems.

It is at the upper end of the price range for inset fires (she paid nearer to the RRP of £500) and I think the limitations of this model should have been made clear. It does achieve higher thermal efficiency than a £200 price-bracket model (70% instead of 50%) but that advantage would seem to be totally negated if you have to run it at 2.4kW output all the time instead of 1kW, and leave a window open to let the excess heat out! That would in fact be a substantial efficiency loss, not gain.
 
AFAIA there is no thermostatic fire currently available i the "standard" market.
Years ago (1960/70's) there was a "crystal gem" (?) fire with a built in thermostat and the fire on a Parkray 401 (?) had a t/stat. (I am sure 112 will confirm or otherwise)

So perhaps we have gone backwards with fire technology.

Some stove manufacturers do a remote control with a room stat in the RC handset, as do the higher end fire makers. But these are in a different cost league to your lady friend's fire. (NDI)

OP: You were not there when your friend made the purchase, so it is not fair to make the assumption of miss - selling. Some customers ask questions, some feel free to engage in an exploratory conversation - some just say "I want that".

Either way, the available documentation shows a minimum output of 2.4 kw.
And your comment about leaving the fire on but opening windows is just childish.

Did she buy it from a bricks and mortar shop or online?


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