Does Wet UFH need a floor temp sensor
Discussion
Investigating UFH heating kits for our extension. I was planning on using a Nest (as we already have one) to control it.
However I've realised I'm not sure you can configure the Nest with a floor temperature sensor.
Is one of these needed? Is there a way of plugging one into a nest? Or should I consider a different controller type.
However I've realised I'm not sure you can configure the Nest with a floor temperature sensor.
Is one of these needed? Is there a way of plugging one into a nest? Or should I consider a different controller type.
anonymous said:
[redacted]
One UFH zone, Plus radiators. Currently on a combi. Plan to install S-Plan with two motorised valves and link the Nests that way (as per the Nest install guidelines.
Need to check Heatmiser and the like though to see if they're a better idea.
Edited by Pheo on Sunday 11th November 18:30
I guess it is theoretically possible that you could over heat the floor, if someone whacked the nest up to 35c and it was calling for heat all weekend
What you’d need to try and calculate though is the rate of energy into the floor via the water circuit, and the rate of heat loss out of it, and how that changes with the temperature differential
Eg it may be to get the floor over 27c you need a flow temp over 45c otherwise the differential is never high enough and there is too much heat loss into the air. So you would set the mixing valve to 45c and then it’s “theoretically” impossible via maths / physics to overheat thebfloor. And/OR you have a heat sensor in the floor which is akin to the overheat sensor on a cylinder
I’m guessing that it’s probably actually quite hard to keep a floornover 27c in the U.K. with the heat loss you’ll have hence a floor sensor probably not needed
What you’d need to try and calculate though is the rate of energy into the floor via the water circuit, and the rate of heat loss out of it, and how that changes with the temperature differential
Eg it may be to get the floor over 27c you need a flow temp over 45c otherwise the differential is never high enough and there is too much heat loss into the air. So you would set the mixing valve to 45c and then it’s “theoretically” impossible via maths / physics to overheat thebfloor. And/OR you have a heat sensor in the floor which is akin to the overheat sensor on a cylinder
I’m guessing that it’s probably actually quite hard to keep a floornover 27c in the U.K. with the heat loss you’ll have hence a floor sensor probably not needed
Gassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff