Apologies for the rather cryptic title...

I am in the middle of creating an open-plan kitchen/lounge/dining area and cannot with certainty decide where best to put the radiators. Indeed, I can envisage that the 'best' position might well change over time if/when the more mobile elements of the room move around.

I was wondering, therefore, if there would be any issue with me piping up a couple of areas to cater for the potential alternative siting of radiators at a later date? In keeping with the rest of the system I'll be using 10mm plastic piping run down from the ceiling behind the plasterboard so it'll be a straightforward job to do at this stage of the construction (the ceiling is currently down). The exit points are are at socket height (behind where the radiator would be) so I would just cap off the pipes in a back box and cover them with a blanking plate.

Once my project is complete there will be limited access to the ceiling space soÂ*I was planning on connecting all the radiator feeds up to the manifolds now hence the unused ones will likely be sitting there for a long time with either air or water in them. Does anyone anticipate any potential issue(s) with this?

From my experience with microbore systems dropped from above is their tendency to develop airlocks particularly after a drain down. Most can be solved by having sufficient drain off points one on every radiator. If you plan to leave pipes accessible behind blanking plates then providing drain offs should allow you to ensure all air is removed, once fully filled any air getting into the system should tend to collect in the tops of radiators.

Richard

On Friday, 13 September 2019 09:56:49 UTC+1, Tricky Dicky wrote:
From my experience with microbore systems dropped from above is their tendency to develop airlocks particularly after a drain down. Most can be solved by having sufficient drain off points one on every radiator. If you plan to leave pipes accessible behind blanking plates then providing drain offs should allow you to ensure all air is removed, once fully filled any air getting into the system should tend to collect in the tops of radiators.

Richard

Thanks Richard, that's good to hear (the drain off mitigation, not the risk!). All the existing radiators do happen to be fitted with drain off valves so perhaps the risk was recognised at the original design/installation stage also.

On Friday, 13 September 2019 09:45:22 UTC+1, Mathew Newton wrote:
Apologies for the rather cryptic title...

I am in the middle of creating an open-plan kitchen/lounge/dining area and cannot with certainty decide where best to put the radiators. Indeed, I can envisage that the 'best' position might well change over time if/when the more mobile elements of the room move around.

I was wondering, therefore, if there would be any issue with me piping up a couple of areas to cater for the potential alternative siting of radiators at a later date? In keeping with the rest of the system I'll be using 10mm plastic piping run down from the ceiling behind the plasterboard so it'll be a straightforward job to do at this stage of the construction (the ceiling is currently down). The exit points are are at socket height (behind where the radiator would be) so I would just cap off the pipes in a back box and cover them with a blanking plate.

Once my project is complete there will be limited access to the ceiling space soÂ*I was planning on connecting all the radiator feeds up to the manifolds now hence the unused ones will likely be sitting there for a long time with either air or water in them. Does anyone anticipate any potential issue(s) with this?

This is where underfloor heating comes in. No radiators.

On Friday, 13 September 2019 18:24:29 UTC+1, harry wrote:

This is where underfloor heating comes in. No radiators.

Indeed, but it's a bit late for that now! ;-)

Whilst part of the new space was a new extension (and hence easily UFHable) the remainder wasn't and there were various reasons I wasn't keen on retrofitting it.

On Friday, 13 September 2019 09:45:22 UTC+1, Mathew Newton wrote:
Apologies for the rather cryptic title...

I am in the middle of creating an open-plan kitchen/lounge/dining area and cannot with certainty decide where best to put the radiators. Indeed, I can envisage that the 'best' position might well change over time if/when the more mobile elements of the room move around.

I was wondering, therefore, if there would be any issue with me piping up a couple of areas to cater for the potential alternative siting of radiators at a later date? In keeping with the rest of the system I'll be using 10mm plastic piping run down from the ceiling behind the plasterboard so it'll be a straightforward job to do at this stage of the construction (the ceiling is currently down). The exit points are are at socket height (behind where the radiator would be) so I would just cap off the pipes in a back box and cover them with a blanking plate.

Once my project is complete there will be limited access to the ceiling space soÂ*I was planning on connecting all the radiator feeds up to the manifolds now hence the unused ones will likely be sitting there for a long time with either air or water in them. Does anyone anticipate any potential issue(s) with this?

It can be an issue if you get an infection in the system, or other situation where it's necessary to empty the water in the legs. Put a drain down valve on the end and all is good.


NT

On 13/09/2019 09:45, Mathew Newton wrote:
Apologies for the rather cryptic title...

I am in the middle of creating an open-plan kitchen/lounge/dining area and cannot with certainty decide where best to put the radiators. Indeed, I can envisage that the 'best' position might well change over time if/when the more mobile elements of the room move around.

I was wondering, therefore, if there would be any issue with me piping up a couple of areas to cater for the potential alternative siting of radiators at a later date? In keeping with the rest of the system I'll be using 10mm plastic piping run down from the ceiling behind the plasterboard so it'll be a straightforward job to do at this stage of the construction (the ceiling is currently down). The exit points are are at socket height (behind where the radiator would be) so I would just cap off the pipes in a back box and cover them with a blanking plate.

Once my project is complete there will be limited access to the ceiling space so I was planning on connecting all the radiator feeds up to the manifolds now hence the unused ones will likely be sitting there for a long time with either air or water in them. Does anyone anticipate any potential issue(s) with this?

The unused legs would be better filled with water rather than air. How
about connecting each flow and return together through an isolator valve
behind the blanking plate? You could then allow them to fill with water
and then turn off the valves.
--
Cheers,
Roger
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Yes when I saw the subject line I did wonder who would put wooden legs in
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I did consider it might be in preparation for Talk like a Pirate day on
Thursday...
Brian

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"Mathew Newton" wrote in message
...
Apologies for the rather cryptic title...

I am in the middle of creating an open-plan kitchen/lounge/dining area and
cannot with certainty decide where best to put the radiators. Indeed, I can
envisage that the 'best' position might well change over time if/when the
more mobile elements of the room move around.

I was wondering, therefore, if there would be any issue with me piping up a
couple of areas to cater for the potential alternative siting of radiators
at a later date? In keeping with the rest of the system I'll be using 10mm
plastic piping run down from the ceiling behind the plasterboard so it'll be
a straightforward job to do at this stage of the construction (the ceiling
is currently down). The exit points are are at socket height (behind where
the radiator would be) so I would just cap off the pipes in a back box and
cover them with a blanking plate.

Once my project is complete there will be limited access to the ceiling
space so I was planning on connecting all the radiator feeds up to the
manifolds now hence the unused ones will likely be sitting there for a long
time with either air or water in them. Does anyone anticipate any potential
issue(s) with this?

On Friday, 13 September 2019 19:32:57 UTC+1, Roger Mills wrote:

The unused legs would be better filled with water rather than air. How
about connecting each flow and return together through an isolator valve
behind the blanking plate? You could then allow them to fill with water
and then turn off the valves.

I could always bleed the pipes by briefly removing the stop ends. That's one of the beauties of push-fit for me; the ease with which joins can be made/unmade. I've done many a 'live' capping using push-fit stop ends and when the pressure's on (pun intended) you can't beat a toolless fitting.

On Friday, 13 September 2019 19:24:28 UTC+1, wrote:

It can be an issue if you get an infection in the system

Hmm... infection doesn't sound good. Is that something inhibitor is design to prevent? (Of course this needs water in the legs, not air)

or other situation where it's necessary to empty the water in the legs.
Put a drain down valve on the end and all is good.

The pushfit stopends should serve well for that, and being 10mm fittings they are tiny so will easily fit within the standard backbox.

On Friday, 13 September 2019 21:09:02 UTC+1, Mathew Newton wrote:
On Friday, 13 September 2019 19:24:28 UTC+1, tabby wrote:

It can be an issue if you get an infection in the system

Hmm... infection doesn't sound good. Is that something inhibitor is design to prevent?

it doesn't prevent it

(Of course this needs water in the legs, not air)

?

or other situation where it's necessary to empty the water in the legs.
Put a drain down valve on the end and all is good.

The pushfit stopends should serve well for that, and being 10mm fittings they are tiny so will easily fit within the standard backbox.

sounds good


NT

On Saturday, 14 September 2019 01:41:44 UTC+1, wrote:
On Friday, 13 September 2019 21:09:02 UTC+1, Mathew Newton wrote:
On Friday, 13 September 2019 19:24:28 UTC+1, tabby wrote:

It can be an issue if you get an infection in the system

Hmm... infection doesn't sound good. Is that something inhibitor is design to prevent?

it doesn't prevent it

(Of course this needs water in the legs, not air)

?

I meant if the inhibitor is to have any effect then the pipes will need to have it in them, not air.

On Friday, 13 September 2019 18:24:29 UTC+1, harry wrote:
On Friday, 13 September 2019 09:45:22 UTC+1, Mathew Newton wrote:
Apologies for the rather cryptic title...

I am in the middle of creating an open-plan kitchen/lounge/dining area and cannot with certainty decide where best to put the radiators. Indeed, I can envisage that the 'best' position might well change over time if/when the more mobile elements of the room move around.

I was wondering, therefore, if there would be any issue with me piping up a couple of areas to cater for the potential alternative siting of radiators at a later date? In keeping with the rest of the system I'll be using 10mm plastic piping run down from the ceiling behind the plasterboard so it'll be a straightforward job to do at this stage of the construction (the ceiling is currently down). The exit points are are at socket height (behind where the radiator would be) so I would just cap off the pipes in a back box and cover them with a blanking plate.

Once my project is complete there will be limited access to the ceiling space soÂ*I was planning on connecting all the radiator feeds up to the manifolds now hence the unused ones will likely be sitting there for a long time with either air or water in them. Does anyone anticipate any potential issue(s) with this?

This is where underfloor heating comes in. No radiators.

There are people who cannot tolerate underfloor heating. It isn't the answer to everything.

On Saturday, 14 September 2019 10:37:16 UTC+1, Mathew Newton wrote:
On Saturday, 14 September 2019 01:41:44 UTC+1, tabby wrote:
On Friday, 13 September 2019 21:09:02 UTC+1, Mathew Newton wrote:
On Friday, 13 September 2019 19:24:28 UTC+1, tabby wrote:

It can be an issue if you get an infection in the system

Hmm... infection doesn't sound good. Is that something inhibitor is design to prevent?

it doesn't prevent it

(Of course this needs water in the legs, not air)

?

I meant if the inhibitor is to have any effect then the pipes will need to have it in them, not air.

afaik there is no purpose in having inhibitor in plastic pipes - they don't rust!


NT

On Saturday, 14 September 2019 12:05:20 UTC+1, wrote:

afaik there is no purpose in having inhibitor in plastic pipes - they don't rust!

It's to protect the radiators rather than the pipework.

On Saturday, 14 September 2019 17:21:37 UTC+1, Mathew Newton wrote:
On Saturday, 14 September 2019 12:05:20 UTC+1, tabby wrote:

afaik there is no purpose in having inhibitor in plastic pipes - they don't rust!

It's to protect the radiators rather than the pipework.

and any other parts that might rust, eg boiler & sometimes other parts. Doesn't do a thing for plastic.