New central heating installations zoning

[proelitegas]

Hi been told by the gas safe inspector that all new installations need zone valves fitting for each floor with a stat can anyone shed any light on this ie wiring piping thanx

 

[mattyp]

yep pain in the bum ! lot more pipework and wiring required [ unless you have just replaced the boiler on an existing system,nudge nudge,wink wink !! ]

 

[Rob Sale]

I'm sure this rule is for Town house type houses where you have an house on 3 plus levels, unlike the standard house on 2. I'll find out for definate on thurs i'm sure i had this in an exam or we covered it at college.

 

[Destroyer2813]

Re piped a how few months ago this way pretty easy extra two port and stat, just have to remember what pipes are upstairs and which downstairs, and i belive it is if the house is over a certan sqm (poss 150 sqm but may be completly wrong just figure rings a bell )

Council are currently redoing 2/3 bed semis round by me on one heating zone

 

[mattyp]

I was told any new installs need zoning hence the reason they have started selling these HONEYWELL CM ZONE SYSTEM

 

[SimonG]

150 sqm rings a bell as well.

 

[Destroyer2813]

In total floor area up and down

 

[GQuigley67]

150sqm sounds about right, unless they changed it again.....I picked up a honeywell booklet from PTS the other day on Part L controls, not got round to reading it yet though

 

[mattyp]

I was told the 150 sqm no longer applies . This Reg has been about for nearly a year and still people are very unclear [ inc myself ] . I had an email will try and dig it out .

 

[mattyp]

http://www.idhee.org.uk/TACMAGuide.pdf judging by this the only exception is open plan buildings !

 

[proelitegas]

It's a requirement on all new installations now according to the gas safe inspector

 

[dontknowitall]

http://www.planningportal.gov.uk/uploads/br/BR_PDF_PTL_DOMHEAT.pdf

Some bedtime reading ...

Search for 150 within the document. (control+f)

 

[mattyp]

Correct me if im wrong but this is 2008 the new reg update came out in 2010 ?


Here is a quote from the part L article in the Worcester installers choice magazine :

'' Previously, the regulations required houses above 150m2 to be time and temperature controlled with the upstairs separated from the downstairs . That makes sense as these houses are so big, but on a house covered by the latest requirements, the upstairs and downstairs are so close that the changes will probably make no imp act whatsoever to the running costs .

The downside of these new regulations is that the pipework arrangement now has to be extremely complex. For the majority of installations in the uk, the installer would hang the boiler on the wall, run the pipework for the heating flow and return into the ceiling of downstairs [ or the floorspace of upstairs ] . The pipework would then run around the rooms upstairs and there would be drops for the downstairs . With the latest amendments, this is now impossible as the pipework has to be arranged in such a way that zones will control the flow of water to the upstairs and downstairs differently . There is therefore now an awkward and probably expensive arrangement and valves are going to be difficult to position . ''

PHEW !! wish i had a scanner !!

 

[AWheating]

yes its correct that its a requirement to zone heating systems after the change to part l of the regs late 2010, worcester have a tech bulletin below.

http://www.worcester-bosch.co.uk/cache/file/23/changes-to-part-l-affecting-new-heating-systems.pdf

if you are working on a job that gained its planning permission before the date the regs was changed then you do not need to alter the design to meet the new regs. I am currenty working for a builder that has 2 jobs with planning pre and post change.