OP
feebs73
Hi Chris
This is my fault, yes there are two jobs that i am talking about
1, is the standard s plan with the extra zone valve (on the hw) fitted to the cylinder, ( so called safety valve) this one is causing the debate.
2, this is another job I have to wire up this is a s plan plus,3 storey house, ground floor is UFH 1st floor has a separate zone valve and stat , 2nd floor has a separate zone valve and stat,
The confusion is I was asking, as they are both s plans pressurised systems, I was woundering why job 2 has not got 2 zone valve attached to the cylinder just the 1, when I asked the plumber he said no you only fit them on a mid position valve Y plan. He than showed me the ( forgive me but It looks like a over flow witch had 2x15mm pipe into 2inch plastic waste pipe) and said that deals with any excess pressure.
I was asking for help as I have never come across this extra zone valve on the hw system (safety valve) before if it is such an important part of the install why cant I find it on any wiring diagram? I would of thought it would of been easy to find it. Even the diagram you posted didn't have the extra have it on there.
I started the other thread to see if I could catch anyone's attention, sorry for the confusion.
I hope this clears things up a bit
I would like to thank everyone personally that is taking time to read these threads and replying to me
Thanks once again all the advise is much appreciated, feebs73
This is my fault, yes there are two jobs that i am talking about
1, is the standard s plan with the extra zone valve (on the hw) fitted to the cylinder, ( so called safety valve) this one is causing the debate.
2, this is another job I have to wire up this is a s plan plus,3 storey house, ground floor is UFH 1st floor has a separate zone valve and stat , 2nd floor has a separate zone valve and stat,
The confusion is I was asking, as they are both s plans pressurised systems, I was woundering why job 2 has not got 2 zone valve attached to the cylinder just the 1, when I asked the plumber he said no you only fit them on a mid position valve Y plan. He than showed me the ( forgive me but It looks like a over flow witch had 2x15mm pipe into 2inch plastic waste pipe) and said that deals with any excess pressure.
I was asking for help as I have never come across this extra zone valve on the hw system (safety valve) before if it is such an important part of the install why cant I find it on any wiring diagram? I would of thought it would of been easy to find it. Even the diagram you posted didn't have the extra have it on there.
I started the other thread to see if I could catch anyone's attention, sorry for the confusion.
I hope this clears things up a bit
I would like to thank everyone personally that is taking time to read these threads and replying to me
Thanks once again all the advise is much appreciated, feebs73