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Appreciate the reply Doitall but it dont answer my question. :( Do you adjust the flow regulators on the manifold to acheive a certain temperature drop over the loop ??.

Cheers for the replys. Just thinking along the lines of reducing pumping costs and installation components. Traditionally the floor temp is usually limited to a lower temp so valves and pumps are used in a secondary circuit which adds to the cost but coupled directly I think the...

Has anyone ever installed UF heating with no mixing valves blending the temperature down and just pumped directly from the boiler using one pump instead of the usual two that you see in many designs and use the money saved to fit weather compensation control to control the...

Does anyone know the design flowrates for underfloor heating circuits by any chance. Information seems sketchy on this subject. Is it just a matter of picking a slightly larger pump and throttling the flow back to get the necessary temperature drop.?? Would I be correct in saying...

I didnt know you could play around with thermostatic mixers. Are they not factory set ? What happens in summer after someone has played around with the factory set calibrations when someone jumps into the shower and thinks he will be receiving water at 39C but instead is scalded with...

What did mikey say anyway. Have I missed it ??.

Joe 90 has got it right. :D

sime10 wrote Can you explain sime. Ive fitted these valves and never had a problem.

Pannerstan Wrote Just consider the heating. Cooling can be acheived by removing clothes and opening windows. :D

Mikey80 wrote Its the big knob on the front that you adjust you knob. :wink:

I think the UK pipe like hep and polyplumb has a barrier in the center of the pipe made from a different material to prevent oxygen ingress. Regarding the acetal fittings that are said to be failing in that link I gave then I would have concerns about JG speedfit as their...

There,s a thingamajig you can get to test the PCB. I think its called a multimeter which has various settings so you can see whats doing what and their not that expensive either. :)

It could be the PCB . :)

Here,s some info on it here - :D http://www.cbc.ca/consumers/market/files/home/pipes/index.html

rob. Could have sworn I just posted this but have you considered installing an unvented cylinder ??.

Water hammer arrestor. :D

Softus. Are you in the cowboy brigade also. Have you considered hanging up the stirupps. ? :lol: What are your credientials anyway as I see a lot of posts from you on this forum. ? MOD 2 you behave as well and softus if you reply i will delete it now calm down the lot of you

Softus wrote . Thats a load of tosh softus. I fitted loads of painted rads in bathrooms and they aint rusted yet.

Boxbasher wrote I dont agree basher. I have seen a few installations using ABS and its very tidy. I may have been a cowboy but I know a neat install when I see one. :D

Hi Jondersmit. Dont take my word as gospel as I am an ex plumber cowboy (have hung the stirrups up now) but have you tried bleeding the system.