I have had underfloor heating installed in a kitchen extention. The
builder installed a thermostatic mixer valve to feed this. The flow
through this valve appears to be inadequate to heat the floor. If I
bypass the valve the floor gets hot so the pipework is ok. I have
stripped and cleaned the valve and set it to max heat to no avail. If I
replace the valve what water temperature should I be aiming for. Can
anyone recommend a suitable valve.

"Diccon" wrote in message
ups.com...

I have had underfloor heating installed in a kitchen extention. The
builder installed a thermostatic mixer valve to feed this. The flow
through this valve appears to be inadequate to heat the floor. If I
bypass the valve the floor gets hot so the pipework is ok. I have
stripped and cleaned the valve and set it to max heat to no avail. If I
replace the valve what water temperature should I be aiming for. Can
anyone recommend a suitable valve.

Temp should be between 25C - 50C.


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I have had underfloor heating installed in a kitchen extention. The
builder installed a thermostatic mixer valve to feed this. The flow
through this valve appears to be inadequate to heat the floor.

Has it ever worked? Perhaps the installer was incompetent and never
installed the correct pipework layout/pumps. Something has to pump the cold
water through the TMV, as well as the hot.

Christian.

On 8 Mar 2005 08:46:47 -0800, "Diccon" wrote:

I have had underfloor heating installed in a kitchen extention. The
builder installed a thermostatic mixer valve to feed this. The flow
through this valve appears to be inadequate to heat the floor. If I
bypass the valve the floor gets hot so the pipework is ok. I have
stripped and cleaned the valve and set it to max heat to no avail. If I
replace the valve what water temperature should I be aiming for. Can
anyone recommend a suitable valve.

mine runs in the low 30's.

Rick

Rick wrote:

On 8 Mar 2005 08:46:47 -0800, "Diccon" wrote:


I have had underfloor heating installed in a kitchen extention. The
builder installed a thermostatic mixer valve to feed this. The flow
through this valve appears to be inadequate to heat the floor. If I
bypass the valve the floor gets hot so the pipework is ok. I have
stripped and cleaned the valve and set it to max heat to no avail. If I
replace the valve what water temperature should I be aiming for. Can
anyone recommend a suitable valve.


mine runs in the low 30's.

Rick

Mine runs up to about 55C.

I think 60C is max reccommended