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Tremendous John. Thanks for your reply, much appreciated.

never use WD40, only silicone spray as mentioned. ceramic disc type taps do not need any lubrication. You will just have to use it to wear it in.

I want to carry out a central heating maintenance on my own system. Could anyone point me to a check-list I could follow, or just list one here? I obviously don't mean the boiler, I have that serviced annually, just a reminder of what to inspect. i.e. TRVs', joints, seals etc. I checked the...

excellent! Thank you very much for the information and thank you for answering the question I asked!!!!!!! Got no idea what his problem is. Obviously the monkey in his signature! Kind regards

looked there and didnt find the answer to my question, hence the purpose of my question!!

Can anyone tell me what the average temperature of a panel radiator flow and return with TRV open fully? I know the difference is around 20ºF but what are the individual temps?

excellent. many thanks. my boiler flow and return temps are fine. just out of curiosity, what would you expect radiator flow and return temp at max to be? cheers Ben

Potterton Netaheat Electronic what average temp should the primaries be?

I am doing some work on my central heating system and got hold of a radiator thermostats. I read that the temperature in is 80ºC and out 60ºC (max full bore) does this sound correct? cheers i guess that if the CH primaries are 90ºC it could be right!

researching for a job

no, It is in reference to the pipework before an un-vented hot water system

in directly and indirectly heated un-vented unit discharge pipework, what does the term 'resistance' relate to? :?

what regulation must be complied with when installing un-vented hot water systems, other than the obvious, i.e. being qualified?

what is meant by the term 'balanced take off'? why is it 'balanced' as opposed to 'un-balanced'? cheers :?

thanks for your comments cheers Ben

excellent. thanks to all. cheers, Ben

ahh. of course, thanks guys. I was reading it incorrectly re: the room thermostat. The motorised valve is what I was looking for. cheers, much appreciated

yes but isnt it the room stat that detects enough heat? or is the device the motorised valve that phyically shuts down the primaries? They both control the operation, one electrically and one physically!!

yes, i thought it would be something to do with internal damage as opposed to spillage too. cheers

thought so. thanks for your reply mate.