DIY Doctor UK DIY Forums

Hi all just had a Heatline Visco 24 fitted from a emerson heater and back boiler, however 1 radiator needed replacing so was removed during fitting,when all installed the three upstairs radiators work fine but the downstair radiators which run off directly from each of the upstairs radiators only one worked the one nearest the boiler,was told that till the last radiator was fitted downstairs the others wont work. When we got last radiator fitted and bled them all again,the two radiators furthest away downstairs still dont work,the pipes running to the rads are heating up but cooling down before entering the radiators,what could this be.... and how can we try and rectify the problem,thanks

Hi just need confirmation,brother in law checked all the pipework and found that the plumber capped off 2 pipes that lead into or out of the backboiler, so thinkd that there isnt a complete circuit of pipework,would this cause the problem we are having, if so if we connect these 2 pipes together and complete the circuit will the problem be sorted,,, thanks

Hi all,
I have recently returned home on leave after having boiler put in my house that i rent to my sister while i am stationed abroad,all details of boiler are in start of topic.I was wondering what all the pipeworks for.
I understand the Copper pipework been main water in,hot out.central heating in and return,then Gas pipe. However then you have a condensing pipe which apparently is to take away the excess acidic water reading from posts on this site,then theres another pipe which i thought was for the overflow, but sister has been told is for the build up of steam in the system and if not attached could cause the boiler to blow,we had to call the plumber back because this pipe had worked loose over the couple of months the boilers been installed,and now my sister is worried that if this pipe works loose again the boiler may blow the house up.Is there any safety systems in place to stop this from happening?
thanks

Hi,

Yes its the Pressure Reduction/relief Valve (PRV) pipework.
This should be piped to the outside ie thru the wall.
If pressure goes much above 3bar the PRV activates and dumps the water outside.
Its safe if piped as above.

Hth

This pipe is a pressure relief discharge pipe, connected to a weighted valve that will open automatically if the system pressure rises above 3 - 4 bar.

The pipe is normally discharged outside, if it is fitted properly, fully tightened with olive/ring in situ the pipe will not come undone. Your sister really doesn't need to worry about it.

htg

Hi, thanks.
When we got our boiler fitted the mrs turned the loop on to up the pressure up but didnt think to turn it off and the pipe wasnt connected so when it went over 3 bar started pouring out and flooded the place,so even without the pipe connected it would only release the pressurepour but not blow the boiler up.....
thanks

That's correct, best to get the pressure relief discharge pipework watertight - just in case.

Any decent installer would check that it was watertight - 2 minute job.


htg