Underfloor heating temperature help

Chopper_Read

cyclonebri1 wrote: »

Maybe he's got his socks on??;)

On a serious note, even set at 25deg it's not going to feel very warm, it gets a little subjective. I'd suggest that the floor temp is checked with a thermometer at actual floor level if that's where the temp is being set, to check the correlation between system stat and actual temp

What leather soled out door ones.

Of course ufh should feel warmer than an unheated floor.

cyclonebri1

Chopper_Read wrote: »

What leather soled out door ones.

Of course ufh should feel warmer than an unheated floor.

I actually said "On a serious note, even set at 25deg it's not going to feel very warm" Have you ever fitted any, it's not like the cartoon cat situation, much more subtle than that.

It's been agreed that it will feel warmer than not heated, anyway one of the posts before yours sums up what we have been trying say, it's slow and not designed to be a primary source for that reason.

Now regarding the argument about boiler temp settings, can someone shed some light on this, I simply can'r see how you can expect to whack water at a very high temp into the floor without differential expansion rates causing de lamination of the concrete/adhesive/pad substrate?????

Chopper_Read

cyclonebri1 wrote: »

I actually said "On a serious note, even set at 25deg it's not going to feel very warm" Have you ever fitted any, it's not like the cartoon cat situation, much more subtle than that.

It's been agreed that it will feel warmer than not heated, anyway one of the posts before yours sums up what we have been trying say, it's slow and not designed to be a primary source for that reason.

Now regarding the argument about boiler temp settings, can someone shed some light on this, I simply can'r see how you can expect to whack water at a very high temp into the floor without differential expansion rates causing de lamination of the concrete/adhesive/pad substrate?????

What has have I fitted any got to do with it?

Chopper_Read

cyclonebri1 wrote: »

The thermostat is measuring the temp of the room, not the floor, forget any feeling you have that the floor should feel warm, it won't.

What it is a a very large radiator operating at a much lower temp than a panel radiator.

Point of fact underfloor heating is a very slow form of heating as you have pointed out, it is also often not sufficient to jheat the room on it's own.

And why do you want the room at 25deg?, if that's your aim go flame thrower.:D:D

Are we back peddling now?

Mr_Ted

cyclonebri1 wrote: »

Now regarding the argument about boiler temp settings, can someone shed some light on this, I simply can'r see how you can expect to whack water at a very high temp into the floor without differential expansion rates causing de lamination of the concrete/adhesive/pad substrate?????

:T Actually if you read ALL the posts you will see that THAT HAS BEEN ACCEPTED AS A RED HERRING FROM THE OP IN THE 1ST POST

Because the UFH IS ELECTRIC, see post No. 21!!!

cyclonebri1

Mr_Ted wrote: »

:T Actually if you read ALL the posts you will see that THAT HAS BEEN ACCEPTED AS A RED HERRING FROM THE OP IN THE 1ST POST

Because the UFH IS ELECTRIC, see post No. 21!!!

Yes I realise that but my comments were about the temp of water used in wet systems as the thread seemed to have taken a diversion.

cyclonebri1

Chopper_Read wrote: »

Are we back peddling now?

Not in the least, but warm is a very subjective term, heat your house up to 25 degs and feel the bathroom tiles, do they feel "warm"?, no they won't because they will be at the same temp as every thing else in the room, and below your body temp.

stevemcol

cyclonebri1 wrote: »

Not in the least, but warm is a very subjective term, heat your house up to 25 degs and feel the bathroom tiles, do they feel "warm"?, no they won't because they will be at the same temp as every thing else in the room, and below your body temp.

I concur. If my system has reached 25° in the early morning, the tiles to my subjective bare feet feel at best 'not cold'. Once in the 30s they certainly feel warm.

scottishminnie

I felt a bit rude that I hadn't posted an update after people had been helpful regarding my questions.

So I fiddled around with the thermostat settings and increased the floor temperatures for the times when we are home/likely to be using the room. There has been an improvement however it needs to be at 30 minimum before you "feel" warmth on the floor.

I did contact the installer as the room itself is really warm which made me wonder if there was a mismatch in the installation as the controller has an option on "air temperature" or "floor temperature". (there is a heated towel rail in the room however we have it set pretty low so don't think it's creating the extra heat).
Let's just say the installer was extremely irate at my question - apparently there is" no f***ing way" it could be set up wrongly" and the only problem with these systems is "stupid customers who can't just do as they are told". He then hung up so I think it is safe to say there won't be any further dialogue between us:)

I'll leave it as is for a month or so and monitor the energy usage before I make a decision on continuing to use it. I guess worse case scenario it is turned off permanently and we write off the cost of buying and installing it to experience however I think we need to give it another few weeks before making that decision.

Thanks to all for your input.

stevemcol

Not wanting to over analyse it but tiles in contact with your skin will tend to conduct heat away from you, making them feel cold to the touch. This will occur until the temperature of the tiles starts to approach your body temperature, ie in the 30s. It sounds like it's working normally. Don't confuse tile temp with air temp. Out of interest, what make & model is the system? It shouldn't cost a fortune to run as long as it's not on all day.