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rodders

According to the Domestic Building Compliance Guide (2010 with 2011 amendments) page 22 it states:

"Dwellings with a total usable floor area up to 150m2 should be divided into at least two space heating zones with independant temperture control, one of which is assigned to the living area."

How are you guys installing these systems? For a combi do you need a one or two channel programmer (it says temp control not time control?). I take it you need two flows from the boiler (will a three port valve do or do you need 2 x 2 port vavles?) and do you need 2 returns (to stop reverse cirulation?) Do you fit check valves to stop reverse cirulation too? Does this cause problems draining down? What about the extra cost to the customer?

As an apprentice, I worked for a big company and we never fitted systems like this but now I'm working for myself I want to make sure I'm doing everything correctly.

Cheers
 
Hi rodders :) 2 zones on and 's'plan 3+ on an 's'plan+ i think you call it :) Individual temp control can be room stats although the whole of the heating still needs to be timed! Regards the return it's best to common the circuits before joining together I'd say :)

That's my opinion though and there are plenty more avid installers with more experience who could better advise from experience :)
 
Cheers for the reply, lets say its a combi system, how do you split the 2 zones for the heating (upstairs and downstairs obviously) but how do you do it? 2 port valves? One on the upstairs flow and one on the downstairs? Where would you site these valves? Under the boiler? I've never seen this out on site and as an apprentice I never fitted combi heating systems this way.

Lets say you got a combi, do you need 2 room stats (one upstairs and one downstairs if so where upstairs would you situate the room stat?) and a 1 channel programmer? Get sparky to wire it in?

Sorry for all the questions but I am struggling to visualise this system any one got some photos they dont mind sharing?

Thank you.
 
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Turn it on it's head rodders, how would you pipe it and design it! I use to get out a pen and paper, in fact have done for my own home that's currently under refirb. Got 3 zones and hot water (4)!
 
Cheers did you use 2 port valves for the different flows? If so, were they postioned under the boiler ?
 
Think simply Rodders. Where is the logical place to split the flows, an airing cupboard? Under the stairs? Possibly at the boiler? Where you split them is where you'd put your zone valves.
 
Cheers did you use 2 port valves for the different flows? If so, were they postioned under the boiler ?

Actually putting 28mm 2 port on 22 pipe Just to guarantee enough flow through :) For my own they're going in the garage, along with the boiler and UV cylinder :). Ease of access when they need repaired/replaced. Note I said when because they will as some time in the future! Place your valves wherever is the best place just make sure they're serviceable! Regards your returns the circuits do need to be commoned before branching back in! You can't just run one return willy nilly :)
 
Cheers for this,

for a combi just need a one channel programmer then?

(sorry for all questions lol)
 
I ask because it says

"into at least two space heating zones with independant temperture control"

and more than 150m2 it says time and temp control. So one channel?
 
Lets say you got a combi, do you need 2 room stats (one upstairs and one downstairs if so where upstairs would you situate the room stat?) and a 1 channel programmer?

rodders the reason they want to have the heating spilt up into the two zone it that there is some energy savings to be gained if the heating in the sleeping areas (bedrooms) of the house can be turned off when no body in these areas, which makes sense if you think about how most people use there houses (bedrooms only need heating when we get up & then again when we go to bed) (unless you want a quickly in the afternoon, ar' they were the days !) sorry, day dreaming again !! anyway this means that you do need time control as well as temp (part L does state this) the easy way to achieve this is to use a programmable room thermostat upstairs controlling a zone valve. You can do the same downstairs as well, easer to link these to 2 ports rather than a 3 port.
Do you know how a 2 port valve works with the micro switch ???
 
if the property only has an upstairs bog them i would put the bathroom off the living zone.
 
I get the reason they require this to be done. I know how a 2 port zone valve works, but I wonder who actually does this? I been in hundreds of houses fitted loads of new and replacement systems and never seen it done.

What happens if someone wants a boiler replacement but just had new carpet and decorating and dont want all the boards up to fit an extra flow and return?
 
I get the reason they require this to be done. I know how a 2 port zone valve works, but I wonder who actually does this? I been in hundreds of houses fitted loads of new and replacement systems and never seen it done.

What happens if someone wants a boiler replacement but just had new carpet and decorating and dont want all the boards up to fit an extra flow and return?

Not to mention the extra cost of copper and fittings, labour and room stat etc.

I'm finding it hard to believe this is done but I don't know?!
 
What should be done (by law) & what is actually done are not necessarily the same thing (like driving a 70 on the motorways) but it does save a bit & if you register your installations under part L you are certifying that it is compliant ! As usual it boils down to wether you do it by the book or not, if only the law was enforced we would all be playing on a level field !!! Fat chance but we should be pushing for it. (plumbing registration by the back door)
 
I get the reason they require this to be done. I know how a 2 port zone valve works, but I wonder who actually does this? I been in hundreds of houses fitted loads of new and replacement systems and never seen it done.

What happens if someone wants a boiler replacement but just had new carpet and decorating and dont want all the boards up to fit an extra flow and return?

Never mind two zones there are plenty changeovers I come across without the required TRV's or temp control, haven't been flushed and the condensates dribble down the outside wall!!! Who polices building regs anyhoo's?
 
Never mind two zones there are plenty changeovers I come across without the required TRV's or temp control, haven't been flushed and the condensates dribble down the outside wall!!! Who polices building regs anyhoo's?

This is true. Always see no TRVs on new boilers etc,

As for who polices it, I guess building control officer?
 
Theres a morale issue here, what do you do if an old lady on a pension with no heating needs a new boiler. Do you tell her she needs all the controls to bring it up to part L or your not going to fit the boiler? Or just fit it and have a clear concience
 
A very good point to prove, in a way they say its the installer to stress that these actions need to be done to comply with building regs. If they dont want it then really the boiler warrenty would be void since thats part of the benchmark... Hmm... But we all could do with a good payout
 
Theres a morale issue here, what do you do if an old lady on a pension with no heating needs a new boiler. Do you tell her she needs all the controls to bring it up to part L or your not going to fit the boiler? Or just fit it and have a clear concience

I totaly agree! In my opinion it's entirely up to the customer what they have or do not have in their homes! Who are we to tell them they MUST comply with building regulations? It is our job to inform them of new requirements and let them make the choice!

Are these regulations a MUST DO? Do we break any 'laws' if we do not comply with building regs? I do not know the answers, anyone know?
 
I was told as long as you put it in writing, and get home owner to sign stating they understand that there installation does not comply with regulations which you recommended then you are covered.
 
Okaydokey done a quick search and found this :

If a person carrying out building work breaks the Building Regulations, the local authority or another person may decide to take them to the magistrates' court where they could be fined up to 5000 for the contravention, and up to 50 for each day the contravention continues after conviction.

You can read more here [DLMURL="http://www.findlaw.co.uk/law/property/building_regulations/9026.html"]How the Building Regulations are enforced and your right to appeal - Property...[/DLMURL]
 
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So are all you guys going to mention this say in your t&c to cover your back?
 
So are all you guys going to mention this say in your t&c to cover your back?

I wonder if it would "cover your back"?

It does mention that proceedings have to be taken within two years of the completion of the work! I have never known Local Authority Building Inspectors being requested to a boiler changeover! I'd imagine they are around on building sites though? :)
 
i have in the past fitted a system in to a 3 story house each floor had a timer and stat easy
 
building inspectors will only attend a building on one condition and that is that some one is paying themso the chances of one ever checking something you've done is not worth worrying about
im certain these new regs are being brought in to keep trainers and controls companies in work each extra piece of cost that legislation adds to a job is money in the illegals pockets
 
I would like the law to be fully enforced, what is the point otherwise, when you have a BC officer who comes out after a customer pays ÂŁ275 & says "I don't know anything about these unvented cylinders but if it hasn't blown up by now it must be all right" gives him a bit of paper & walks out !!!
I want to see people (customers & installers) being prosecuted where ever possible for non complaints of the building & for that matter the water regs as well. Why have I spent good time & money making sure I have the training & skills to comply when others don't & undercut me because they don't bother to upgrade heating systems for instants.
Lets try to get the law of the land fully enforced, it may be a way of getting the cowboys out or at least have a bit more of a level playing field !!
 
chris i agree completely but this is the problem of todays society so many laws are being flouted no one obeys any when you see burglars walking free despite having hundreds of previous convictions what chance is there of a crack down on builders and then theres politicians commiting fraud and paying the money back to avoid prosecution, the list is endless
 
Can't just throw our hands up in the air, otherwise we might end up with some people choosing not to obey any of our laws.
Got to complain, I will find out who best to & let who all know.
It might not be registration for plumbing but it is the only laws we have to prevent cowboy works, so it has got to be worth a try hasn't it ?????
 
I would like the law to be fully enforced, what is the point otherwise, when you have a BC officer who comes out after a customer pays ÂŁ275 & says "I don't know anything about these unvented cylinders but if it hasn't blown up by now it must be all right" gives him a bit of paper & walks out !!!
I don't know if it's common throughout the USA, but I was recently reading an American site (Heating Help - Heating Systems ) and it would appear that in New York all heating work has to be pre-approved (e.g heat loss calculations etc) and the installation checked afterwards by independent inspectors. NO "self-certification".

There are also stringent rules about qualifications and training. One builder got done for using untrained and unqualified personnel to repair someone's chimney.
 
doitmyself it is done like that in most developed countries through out the world, apparently in this country it is to allow market forces & anti-bureaucracy to prevail, kind of tells you of the importance others place on it when the good old US of A has so stringent rules, a !!
 
Iff all the building regs were rigidly enforced some people couldn't afford it. Meaning some of thework would be done illegally. So enforcing it to the letter would have the opposite effect than the desired one.
 
unregistered gas engineers bearly get taken to court, so you will find it hard to find a installer getting done over a lack of trv's fitted. Right or wrong you have to try your best to earn a living and do the right thing while competing with those that dont in many walks of life.
 
How so Leo21 ??
If customer need work done they need it done !!! If they or others carry out the work & break the law they should be prosecuted shouldn't they ? just like anybody who breaks our rules. If you don't like the law (rules) then get them changed otherwise all I what is them obeyed by everybody !! is that so wrong ??
If you are a plumber / heating engineer it is in our interest isn't it ??
 
Following the building regs to the letter may mean some people have no other option than to go the "cheap route" iff they can't afford it. ie cowboys or unregistered people working only for cash. In that situation isn't it better for a registered engineer to do a safe job ,that doesn't meet some of the criteria. Rather than having that bloke from the pub who,s got the escort van doing a dangerous job? And I'm only talking about perhaps not zoning or room stats. Not standard efficiency boilers. So there gas bill may be 5% higher. So what!
 
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