2 Port valve + 3 Port mid position valve on same setup

[allesclar]

Hey everyone,

Had some work done to convert our hot water system to pressurised one. Well the chap installed a new 2 port valve and kept the original 3 port mid position valve in.

To me that is a pointless thing to do as to me as surely its two valves in series to one another?

The heating does not work without me manually flicking the switch on the 3 port mid position valve.

Any thoughts greatly appreciated.

 

[bewsh]

Is he using the 2-port to zone off a section of the house?

 

[TBServices]

Sounds like he's put the 2 port in as a safety cutoff to the cylinder.

Perfectly normal, although I'd have changed to an s plan myself.

 

[tamz]

The 2 port is there to comply with the regulations. A mid position on its own will not do this.

 

[Masood]

Agree with TB - far neater to convert to S-plan but perfectly OK to do as he has done.

Although you having to manually move the lever on the 3-port to get heating (if I'm reading your post right?) is not good!

 

[kay-jay]

get him back. it sounds like a minor wiring issue.
perfectly normal to have a 2 and a 3 port valve on a unvented cylinder.

 

[Ermintrude]

Normal but lazy and stupid. But a 2 port from your local merchant and have him remove the three port and set your system up as an s plan. Ensuring you have a stat and programmer too. Assume he's not lagged all the pipes on the unvented. Let's have a picture.

 

[solutions]

Normal but lazy and stupid. But a 2 port from your local merchant and have him remove the three port and set your system up as an s plan. Ensuring you have a stat and programmer too. Assume he's not lagged all the pipes on the unvented. Let's have a picture.

That pic 1 of yours Ermi? What label printer you using? Any good?

 

[Ermintrude]

P touch brother one. Awesome. Yeh vented in airing to unvented in loft .

 

[Reg Man]

S plan+, three 2 port zone valve is the easiest. Think you can do it with 3 port and 2 port but need a separate relay, Only heard of it once and the electrician sorted it. Its not quite the same on unvented, as the 2 port is wired directly to the vessels overheat stat, not interlocked with the boiler.

 

[southcoastboile]

If you ask him to change it to a 2 port you should expect to pay twice in my opinion.

 

[kay-jay]

If you ask him to change it to a 2 port you should expect to pay twice in my opinion.

I agree. Or get him to correct the wiring issue and leave as it is with a 3port and a 2 port

 

[allesclar]

Hello everyone,

Sorry for the delay, been on a quick break up north.

Well I have spoken to him but he is insistent on it being correct and working and that it is the 3 port valve that is broken.

He has not signed off the pressurised water cylinder in our airing cupboard, to me that is something of a worry ?

I cannot post pictures apparently, "new posts are limited" but the picture is located here:

But it is very similar to the one above. Is there anyway i can get the picture on this thread?

Cheers for all the replies.

It feels as if he has done half a job and doesnt seem interested in finishing it.

 

[solutions]

It may feel that way but that does not appear to be the case from this side of the internet. It is quite possible that all that is wrong is you have a failed 3 port valve. Is your plumber/heating enginneer G3 certified? If so you should have nothing to worry about.

 

[allesclar]

It may feel that way but that does not appear to be the case from this side of the internet. It is quite possible that all that is wrong is you have a failed 3 port valve. Is your plumber/heating enginneer G3 certified? If so you should have nothing to worry about.

He is on the gas register website, if that answers your question?

This is on the work authorised to carry out on the website:
+ Gas Boiler
+ Combustion Analysis
+ Cooker
+ Pipework
+ Range Cooker
+ Vented Cyl

The fact the heating works when the hot water is on but doesnt when its off leads me to think it could either be the mid position valve but we did have an electrician round to check the original wiring which was found to be incorrect.

Due to the adhoc nature of the work done, could it be that the electrician has missed something further and its only for the original plumber to get it sorted? I really don't want to have to keep paying to get something that cost quite alot in the first instance resolved.

Cheers

 

[allesclar]

I have a picture to upload but cannot. I guess i need to work up a few more posts first.

 

[doitmyself]

He is on the gas register website, if that answers your question?

This is on the work authorised to carry out on the website:
+ Gas Boiler
+ Combustion Analysis
+ Cooker
+ Pipework
+ Range Cooker
+ Vented Cyl

That explains why he has not signed off the cylinder: he is not qualified to install and commission unvented cylinders.

The problem with CH is probably due to a missing wire to the 3-port valve from the programmer or cylinder thermostat.

 

[allesclar]

That explains why he has not signed off the cylinder: he is not qualified to install and commission unvented cylinders.

The problem with CH is probably due to a missing wire to the 3-port valve from the programmer or cylinder thermostat.

Right that's bad. I guess it's not the case that the gas registry is out of date since July? This in my eyes is a criminal offence, from an electrical background, to me that is as bad as installing a consumer unit without any BS7671 or testing competency!!

Any advice? I still would like this to stay friendly but I find the more I dig, the more holes u find.

Cheers

 

[allesclar]

I am going to talk to him today. Am I correct that I should have received a gas safe test certificate for the work done? The work done specifically was conversion of a vented hot water system to a pressurised system with a new pressurised water cylinder. The central heating system is still the original vented system.

 

[allesclar]

 

[allesclar]

The white box is the Honeywell 3 port valve. The new two port he installed is to the left off the 3 port valve.

 

[doitmyself]

It might be worthwhile speaking to GasSafe about his vented/unvented qualificaton, in case he has passed the necessary tests but they haven't got round to updating the register. You don't want to have a go at him, with all guns blazing, to find that he does have the required qualification.

 

[Masood]

That explains why he has not signed off the cylinder: he is not qualified to install and commission unvented cylinders.

This is not necessarily true. Not all certifying bodies for G3 automatically notify Gas Safe when people achieve G3 qualifications. I know for a fact that Logic do not. When I got mine, I had to notify Gas Safe myself, and send copies of my card and certificate. There is no obligation to do so, so the installer might have chosen not to. He may still be a member of a competent persons scheme such as Logic.

Stating unequivocally that he is not qualified is not on, as you simply can't know for sure from his Gas Safe listing.

It might be worthwhile speaking to GasSafe about his vented/unvented qualificaton, in case he has passed the necessary tests but they haven't got round to updating the register. You don't want to have a go at him, with all guns blazing, to find that he does have the required qualification.

As above - he may have chosen not to list G3 on his GSR listing. There is no requirement to do so.

OP - ask to see his G3 certificate or card. Check that it's actually his, and in date.

 

[doitmyself]

Not all certifying bodies for G3 automatically notify Gas Safe when people achieve G3 qualifications. ... There is no obligation to do so, so the installer might have chosen not to. He may still be a member of a competent persons scheme such as Logic.

... he may have chosen not to list G3 on his GSR listing. There is no requirement to do so.

I stand corrected.

From a customers point of view this is not sensible. How many organizations is one expected to know about, to check if someone is qualified to do the work?

Gas Safe for Gas Work
Logic and, presumably, others - for unvented work
Napit and other for Part P
What about compliance with Water Regulations?


And that's just for plumbing and heating.


Wouldn't it be sensible to have a "one stop shop" which provided the lay person with all required information?

 

[solutions]

I stand corrected.

From a customers point of view this is not sensible. How many organizations is one expected to know about, to check if someone is qualified to do the work?

Gas Safe for Gas Work
Logic and, presumably, others - for unvented work
Napit and other for Part P
What about compliance with Water Regulations?


And that's just for plumbing and heating.


Wouldn't it be sensible to have a "one stop shop" which provided the lay person with all required information?

Yes it would be sensible but then they couldnt all justify the £100's of pounds of membership fees they all want.