Kevin I hope you don't mind but I edited this post of yours, it is very informative and will now be easier to find and because it was removed from another thread part of the conversation just wouldn't make any sense.
As regards the underfloor heater I tried the one in my Designer over Christmas. Not as hot as the 2Kw convector I was using. I believed it was supposed to be 13/4Kw but having read the literature 6800BTU is all but 2Kw. It feels more like 1.3Kw or 1.4Kw.
The heater is perfectly safe. Even if the airways needed a clean and it was producing orange flames rich in carbon monoxide. The combustion is in a sealed chamber vented to the outside.
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The bottom diagram shows how the air for combustion then the exhaust flow through the heater.
If the heater is burning poorly it's just a blow through with an air line.
This is others comments on [You must be registered and logged in to see this link.]
As regards the underfloor heater I tried the one in my Designer over Christmas. Not as hot as the 2Kw convector I was using. I believed it was supposed to be 13/4Kw but having read the literature 6800BTU is all but 2Kw. It feels more like 1.3Kw or 1.4Kw.
The heater is perfectly safe. Even if the airways needed a clean and it was producing orange flames rich in carbon monoxide. The combustion is in a sealed chamber vented to the outside.
[You must be registered and logged in to see this link.]
The bottom diagram shows how the air for combustion then the exhaust flow through the heater.
If the heater is burning poorly it's just a blow through with an air line.
This is others comments on [You must be registered and logged in to see this link.]