heating zones part L

[buckley plumb]

just read an article in the worcester bosch installer mag on the new part L heating regs .it said that new heating sytems now have to have the upstairs and down stairs zoned seperate even if its under150m2.anyone else read this

ant

 

[SimonJohns]

I read that and it's true. Seems a lil bit hard to sell thou.

Especially to the older generation who have had a clock for the last 20 years!!!!


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[WHPES]

If you are doing a new system it's no big deal - normally only a matter of sticking an extra zone valve on and the electrician wiring up an extra channel.

 

[buckley plumb]

extra zone valve - what about the extra pipe runs flow and rtn for upstairs and flow and rtn for down stairs twice as much copper

 

[Gray0689]

extra zone valve - what about the extra pipe runs flow and rtn for upstairs and flow and rtn for down stairs twice as much copper

Em no not if it's plumbed right no extra copper at all

 

[wnjswozo]

you can put programable trv on to comply,and only applies to new builds

 

[moogwai]

Wtf are trv's for.......the rules are getting sillier by the day.

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[SimonJohns]

Well thanks to the welsh assembly. They have passed a requirement for all of new build to have sprinkler systems. Forget the extra zone valve for heating lol


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[Gray0689]

Wtf are trv's for.......the rules are getting sillier by the day.

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I disagree all heating should be zoned
At very least living areas. bedroom areas and hot water only

 

[buckley plumb]

Em no not if it's plumbed right no extra copper at all

please can you explain how. apart from the electronic trvs.twin zones normaly mean twin circuits

ant

 

[buckley plumb]

saw a system where it uses a manifold like an under floor manifold and each rad pipes go to this and every room could be set at a different temp can see this being the norm

ant

 

[Gray0689]

please can you explain how. apart from the electronic trvs.twin zones normaly mean twin circuits

ant

If it's got heating upstairs then you have to go up with F/R anyway just needs teed off and zone valve fitted!!!!

 

[julesverne]

does anybody know how this would be wired up would like to see a wiring diagram for a combi or s/y plan.

 

[Gray0689]

saw a system where it uses a manifold like an under floor manifold and each rad pipes go to this and every room could be set at a different temp can see this being the norm

ant

That's how all heating should be done now

 

[buckley plumb]

when i worked for a company we did lots of split zones some had each floor (4 storey house ) zoned and 5 ufloor heating zones they are wired as a supper s plan quite easy to wire all the oranges /greys/ blues together and the brown fed from each floor stat. i have done a combi connected to a mega flow -used hw from combi to feed kitchen sinks then split htg flow to make s plan to feed htg and cylinder which fed bathroom.

 

[ratrace]

So this is only on new builds?

 

[doitmyself]

please can you explain how.

There seems to be two ways of piping the heating in a house.

The older, traditional, way is to have a single pair of 22mm pipes which snake round the house, feeding both upstairs and downstairs, with the rads connected by 15mm drops.

The second method is to split the system into upstairs and downstairs immediately after the pump and provide a separate pair of 22mm pipes for each floor.

In some cases, e.g concrete floor downstairs, the first method may be easier as the downstairs rads can be fed from upstairs using 15mm drops down the wall.

Apart from that, the second method is preferable. The difference in the amount of pipe used is negligible.