Problems with Underfloor heating

monthehoops

Hi all,

Someone on here might be able to help.

I had underfloor heating installed 12 months ago. It was hit and miss last winter, with some rooms warm and some cold. I have a number of stats in each room throughout the house and underfloor upstairs and down.

Now I think there is an issue with the manifold/heating layout. Here's some examples:

- In my sitting room I have the stat set for 17 degrees from 7am to 12pm and 6pm until 12am. Each morning I come down the stat reads 25 degrees and the room is roasting. Last night I turned off every stat downstairs, removed the head off the manifold for the pipe going to each room and the room is roasting again!

- The dining room is always cold. The stat is set but it's always cold in there no matter what. Initially I thought it was an issue with the stats in the house but it seems to me that there is a problem with the manifold or worse still the pipes that are laid down.

I have gotten heat to the dining room but only by swapping heads on the manifold so I have a few questions....

1 - Is there anyone in the North Cork area who specifies in this kind of thing? Not a plumber, but an actualy specialist in the topic.

2 - Is there some way to manipulate the manifold into at least getting the rooms I want to work to work.

Thanks in advance.

The Hurricane

Hi there,

I had similar problems when I turned on underfloor heating in new house. Seems like one of two things the clown of an electrician wired the actuator to the wrong stats common enough to happen.

The other thing it could be is the carpenters in my house put down 10 gague thick plastic in my dining room as opposed to a low tog underlay which they were suppossed to. This thick plastic stops heat coming up and makes concrete slab underneath sweat. The low tog underlay helps heat get up.

If your leaving heat on for ages and the dining room does not heat up its wired wrong especially if it works when you swap the heads on the actuators think thats what you mean by heads on the manfold.

Finally get on to the guy who installed system and get him out to sort it if you can.

The Hurricane

sullzz

In my sitting room I have the stat set for 17 degrees from 7am to 12pm and 6pm until 12am. Each morning I come down the stat reads 25 degrees and the room is roasting. Last night I turned off every stat downstairs, removed the head off the manifold for the pipe going to each room and the roo
m is roasting again

By removing the head off the manifold your actualy allowing that circuit to heat up , with no head on the manifold it has no way to stop the circulation , its similar to a thermostatic rad valve , if you were to remove the head off a thermostatic rad valve the rad will constantly heat up until manualy shut

monthehoops

Cheers lads. There is no way in hell I'll be getting the guy who installed it back though.