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also, what temp should the supply water be at the manifold? cheetrs

thats great thanks. not to question you or suggest it makes much of a differnce , but have read the diff shout be about 12?

could the blending valve be faulty? i have read people taking them off and cleaning etc. how is this done?

the blending valve is set to 45/50 as previously mentioned. there is a thermometer in the supply to the manifold pipe as well as the return pipe on the manifold. the supply thermometer reads 70 and the return can be reading 40 degrees sometimes

i think the supplly is like 70 and the return coming back at 45/50

ah well i will try to tighten up the temp differecnes then

Hi all, have a wet underfloor heating system. the issue i have is that some rooms/loops work fine and others the floor stays stone cold. new pump was fitted and the supply is hot so no issues there. blending valve set to 45/50 and the flows all read about 2ltrs. the returns come back luke...

also, what pressure should the system be on?

my manifold is below all the floors...

well I can close one end of the loop as it were , but wont it continue draining into the manifold etc?

HI ALL. last ditch attempt to get my UFH working in some rooms,some are fine. I want to purge the system of air which im fine to attempt. my problem is that I can close both ends of the individual loops . I have the balancing valves at one end of each loop where I can screw them down to stop the...

No carpets its wood floor

cheers, i'll go and hire a power flusher etc

Yes ,I've had it running for most of a day and still nothing.

cheers

sorry to double post, but if there is some crud blocking it, and cleaning fluid helps budge it, could the dirt/ whatever block somewhere else?

so I just introduce the cleaner thru the manifold filling point? or how do I put it through? I guess the same with the inhibitor?

what product do u think I could try to introduce my self? is it ok to leave it in the system for that long etc?

good point.. perhaps I'll just bite the bullet and get someone ELSE in! thanks for all your help and advice buddy

when I feel the floor by hand it feel stone cold. is the power flush something I can do my self , or do I need some sort of pump etc? when I purged the loop the water coming out was clear...