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Hi. We've just had wet underfloor heating fitted in our new basement and we've got a problem. It's split into 5 zones but one of the rooms (our bedroom) always gets really warm, regardless of what the thermostat in that room is set at. Last night the thermostat was set to 17 (and wasn't showing that it was calling for heat) but the room temperature was 23.
Here's a photo of the set up, and if just one of the rooms is switched on, ALL the pipes coming from all 5 manifolds are warm - which makes me think it's set up wrong.
[url= https://farm8.staticflickr.com/7466/16347873062_ce9a7af7ca_q.jp g" target="_blank">https://farm8.staticflickr.com/7466/16347873062_ce9a7af7ca_q.jp g"/> [/img][/url][url= https://flic.kr/p/qUB87o ]IMG_20150123_164345265[/url] by [url= https://www.flickr.com/people/68697688@N00/ ]Sandra and Alex[/url], on Flickr
Sounds like all zone valves are opening....or have they been manually locked open ?
Yup, sounds like all actuators are in the open position, maybe some wiring or control box issue. If it's just been fitted get the chaos who put it in back and if you haven't paid them yet, don't.
Do you realise that ALL your photos are visible on Flickr?
Check the batteries on the room room stat, last job I visited the actuator stayed in open position allowing heat through when batteries were fading.
Has the manifold been balanced? Flow rates in the spy glass need to be equal.
Is there only one thermostat, or one per room?
If the latter, just turn down the one in the bedroom - they don't need to be accurate, just comparative.
If the first, just needs greater configuring.
There's a thermostat in each room, but it doesn't matter what we have our room set at, it still gets really warm - even when that room is switched off completely.
The guy is coming back again tomorrow and if he can't fix it we will call in a specialist. And no, we haven't paid the final installment yet.