Central Heating Zones - New & Replacement Systems

[fuzzy]

i think the gains are minimal on a property under 150m2. as the gains IMO are insignificant i wouldnt think it would even cover the small installation cost for some time. Totally agree for larger properties

if all rads are sized correctly and trvs fitted i dont see how zoning on a small property would give any significant financial gain or comfort control

 

[fuzzy]

i was also told this decision was being reviewed, however i cannot confirm this

 

[diamondgas]

I didn't know this thread had taken off some, sheeeeeeeeeesh! I miss the good ones🙂

By-the-way, building regs are legal requirements and you can be prosecuted and fined if found out flaunting them! I agree with Chris that we should all abide by the legal requirements. The fact that it's down to the local authorities to enforce the regulations and someone has to pay for anything to be inspected means there's little chance of work ever being checked out! Self policing is the only way I see it being regulated which would mean some kind of means for reporting contraventions we may come across! Just don't see it happening alas !!🙂

 

[fuzzy]

could be a can of worms

 

[GasManMike]

I seem to vaguely remember being told that straight swaps eg combi for combi or conventional for conventional don't need zoning as long as the pipe work remains the same. But if you were to change a gravity system to a fully pumped system it would then need to be zoned in line with building regs. Is this right or Have I made it up?

Thanks.

 

[diamondgas]

Do a google on Part L mike! requirements for changeover may encourporate an exemption for zoning, would have to check it myself, but you are still rewuired to put TRV's, time clock and room thermostat ... 🙂

 

[rodders]

Hi everyone,

When I started this thread I never imagined it to get so much attention, but it seems everyone has their own view on it.

To settle this once and for all I have asked for professional clarification and will let you know as soon as I hear anything.

Thanks everyone,

Rodders

 

[fuzzy]

nice one mate

 

[doitmyself]

To settle this once and for all I have asked for professional clarification and will let you know as soon as I hear anything.

And every "professional" you ask will give a different answer.

 

[Hoof Hearted]

I have a large house and different rooms are required to be heated at different times of the day. I found a simple solution which has worked very well for me. Programmable TRV's: Salus Programmable TRV PH60 - Buy Plumbing Online

I bought 2 of these and they work just great. It gives me the complete flexibilty to heat my house efficiently

Just my tuppence worth

 

[rodders]

And every "professional" you ask will give a different answer.

Yeah but if a "professional" gives me an answer by email it will be far easier to defend myself incase building control want to take me to court etc...

Just trying to cover myself...

 

[doitmyself]

Yeah but if a "professional" gives me an answer by email it will be far easier to defend myself in case building control want to take me to court etc...

Now you are really opening a can of worms!

An email is unlikely to be accepted as evidence by the court, so you will have to ask the professional to appear in person (at your expense!).The qualifications and experience of the professional will immediately be questioned by BC's lawyer, who will produce his own "expert witness" to prove that your professional is talking through his hat.

 

[rodders]

Now you are really opening a can of worms!

An email is unlikely to be accepted as evidence by the court, so you will have to ask the professional to appear in person (at your expense!).The qualifications and experience of the professional will immediately be questioned by BC's lawyer, who will produce his own "expert witness" to prove that your professional is talking through his hat.

Sorry but you seem to misunderstand, I have gone to my local Building Control office & Department for Communities and Local Government to get a proper professional answer. I have not asked some random guy with a degree from Uni to back me up on an email in case I go to court.

 

[chris watkins]

Sorry rodders but you are mistaken if you think that your local BC office is likely to contain any expert's capable of giving you a professional answer, you obviously missed my post on one of our local ones who didn't even know what an un-vented hot water system was, or that it was covered by Part G, what hope then but if you what to know what is required read for yourself it is all in the Domestic Heating Compliance Guide.
http://www.planningportal.gov.uk/uploads/br/domestic_building_compliance_guide_2010.pdf

 

[rodders]

Sorry rodders but you are mistaken if you think that your local BC office is likely to contain any expert's capable of giving you a professional answer, you obviously missed my post on one of our local ones who didn't even know what an un-vented hot water system was, or that it was covered by Part G, what hope then but if you what to know what is required read for yourself it is all in the Domestic Heating Compliance Guide.
http://www.planningportal.gov.uk/uploads/br/domestic_building_compliance_guide_2010.pdf

Building control police the building regs so if they cant get an answer between them theres no chance they can take anyone to court to breaching the regs they cant tell you about.

As referenced, I understand what is required as per post #1.

But what I'm saying is who follows this on every job (some people may) and how can you compete with other companys that do not follow this.

 

[diamondgas]

Building control police the building regs so if they cant get an answer between them theres no chance they can take anyone to court to breaching the regs they cant tell you about.

As referenced, I understand what is required as per post #1.

But what I'm saying is who follows this on every job (some people may) and how can you compete with other companys that do not follow this.

In my view rodders the only place you'll have to conform would be building sites! That's the only place I can envisage Building Control Officers present, otherwise they're at yours or the customers request far as I can tell!

In answer to competing, you either lower your standards and ignore building regs or you sell the benefits of added control and let the customer choose who to believe and trust with the work they're wanting completed! End of the day it's their home we're being invited into and their choice as to the work carried out. If you're really concerned then draught up a disclaimer that the customer can sign that'll cover your butt 😀

 

[rodders]

Right, time to put this one to bed once and for all...

I spoke to a Building Control officer at the local council and they advised me for a definite answer I need to speak to the Department for Communities and Local Government.

I emailed the following to someone at Department for Communities and Local Government who was there to give advice on Part L.

I have a question regarding Part L & Domestic Building Services Guide.

If a boiler is being replaced (like for like i.e natural gas fuelled for natural gas fuelled, in England) in a domestic dwelling what are the requirements for zoning the central heating system?

Is it right that if the boiler is being replaced that the central heating needs to be separated into two different zones (1 zone upstairs & 1 zone downstairs).

Thank you,

(not the whole email but you get the drift...)

I then received a reply (this is not the full email...) from them stating;


When simply replacing a boiler, there is no requirement to upgrade the whole heating system to meet current standards. In general it is only the component being replaced that needs to comply.

It is only heating systems in new dwellings and complete new heating systems (including pipework) in existing dwellings that should be provided with two heating zones - and then only if cost-effective. For example, there could be one room thermostat upstairs and one downstairs, or one could be in a lounge and the other in a home office.

There is further information in the Domestic Building Services Compliance Guide at www.planningportal.gov.uk/uploads/br/domestic_building_compliance_guide_2010.pdf - see for example Supplementary Information on page 24.

I hope this is helpful.

Best regards

So finally I have an answer. No zones needed on a boiler change... and only need to put zones in a new heating system if cost effective.

So basically no need to zone off new system either really (unless greater than 150m2).

I find it surprising that no one had a definite answer everyone kind of guessing (it is complicated I know).

Now I'm sure some people will be sitting there thinking "I knew that anyway" well - I didn't.

Thank you for your time and interest!

 

[chris watkins]

rodders can I say a thank you, personally & I am sure on behalf of all interested parties. Now we all know so can stop this = :willy_nilly:

 

[rodders]

rodders can I say a thank you, personally & I am sure on behalf of all interested parties. Now we all know so can stop this = :willy_nilly:

No problem it's been a grey area for me for a while so I thought I would get a proper answer and stop guessing.

Thanks

 

[peteheat]

Well done Rodders,

We have similar regs in Ireland, to add to the confusion we also a grant in place for boiler upgrades, one of the terms is new boiler must have new controls as described here two zones and hot water basically a three zone system.

One of the requirements on the installer is to use 10m2 earth for bonding all pipework, the earth must run back to the board, of course most houses have 6m2 so installers used 6m2.

Not allowed re-work orders flying all over the country, as the contractor we must carry out any such work at our own expense it is not regarded as the customers fault, the contractor also gets penalty points for every mistake 12 points and your off the contractor list, you can appeal any points below is a guide of what is not accepted as grounds for appeal.

Unacceptable grounds for Appeal
Additional work will be completed to bring the installation to the required standard
Where reworks are identified then the contractor is required to undertake these reworks, and the applicable penalty points remain on the contractors’ profile. It is not a case of one sanction or the other, but rather both.
Do not agree with the requirements of the Technical Specification
Minor error that will not happen again
Homeowner did not want to undertake full specification of works, could not afford the extra works, did not want to upset the house further.

And they wonder why contractors are not happy with the scheme?

At least what you discovered makes sense, well done.