DIYnot
Local | Network
   DIYnot > Forums
Local | Network
DIYnot Network Local DIYnot Network Local  
  Forum IndexForum Index     RulesRules    HelpHelp     Join FREERegister Free     About CookiesCookies     SearchSearch     LoginLogin 

Flow Rate for 10mm plastic pipe.


 
Post new topic   Reply to topic    DIYnot.com Forum Index > Plumbing and Central Heating
Search this topic :: View previous topic :: View next topic  
Author Message
willp2

from United Kingdom

Joined: 13 Oct 2007
Posts: 4
Location: Manchester,
United Kingdom

PostPosted: Sat Oct 13, 2007 6:05 pm Reply with quote

I read the post on Smiths under plinth heaters there was no ref to size of input pipes, I wish to spur off the heating system with plastic 10mm will this support enough flow rate (70gph) I think is what is required. I have a Combi system
Back to top
 Alert Moderators

If you do not want to see this advert, click here to login or if you are new click here to join free.
gas4you

from United Kingdom

Joined: 23 Feb 2007
Posts: 17630
Location: Norfolk,
United Kingdom
Thanked: 756 times

PostPosted: Sat Oct 13, 2007 6:24 pm Reply with quote

Can't see a problem with this, 10mm usually will take up to 10,000 btu's.
Back to top
 Alert Moderators
Agile

from United Kingdom

Joined: 26 Jun 2004
Posts: 53326
Location: London,
United Kingdom
Thanked: 3380 times

PostPosted: Sat Oct 13, 2007 11:54 pm Reply with quote

It all depends on the length of 10 mm tube!

And the rating of the heater!

Because these are such good heaters I would normally fit with 15 mm to ensure they get enough heat input.

I would ask why use 10 mm ??

Tony
Back to top
 Alert Moderators
willp2

from United Kingdom

Joined: 13 Oct 2007
Posts: 4
Location: Manchester,
United Kingdom

PostPosted: Sun Oct 14, 2007 2:55 pm Reply with quote

because I'm lazy and 10mm is already in situ from the rad I'm changing it with thanks anyway
Back to top
 Alert Moderators
Softus

from United Kingdom

Joined: 21 Oct 2004
Posts: 19558
Location: United Kingdom
Thanked: 9 times

PostPosted: Sun Oct 14, 2007 3:15 pm Reply with quote

willp2 wrote:
because I'm lazy and 10mm is already in situ from the rad I'm changing it with thanks anyway

So, you're actually sharing the heat capacity of 10mm between the rad (and maybe more than one) and the plinth heater.

I wouldn't use microbore unless it was illegal not to - if the system isn't clean enough it'll block up quicker than you can say "magnetite".
Back to top
 Alert Moderators
chrishutt

from St. Pierre and Miquelon

Joined: 20 May 2005
Posts: 5344
Location: St. Pierre and Miquelon
Thanked: 20 times

PostPosted: Sun Oct 14, 2007 5:15 pm Reply with quote

[quote="Softus";p="714078"]
willp2 wrote:
if the system isn't clean enough it'll block up quicker than you can say "magnetite".

I've never known microbore become blocked by corrosion deposits. 15mm pipe on the other hand can become blocked. The reason is that water travels at higher velocities in microbore and is less likely to leave any deposits.
Back to top
 Alert Moderators
Softus

from United Kingdom

Joined: 21 Oct 2004
Posts: 19558
Location: United Kingdom
Thanked: 9 times

PostPosted: Sun Oct 14, 2007 5:22 pm Reply with quote

chrishutt wrote:
I've never known microbore become blocked by corrosion deposits. 15mm pipe on the other hand can become blocked. The reason is that water travels at higher velocities in microbore and is less likely to leave any deposits.

Chris, my comment was meant to be in context - I've seen it happen where a plinth heater, because of the nature of its use, is out of circulation for long periods, and there can be a build up where the supply tees in to the rest of the circuit. I've also seen a plinth heater that seemed to act as a sump for every bit of grunge in the system, and defied attempts to clean it out. And don't forget - the velocity through each rad (and plinth heater) is independent of the water velocity in the supply pipework.
Back to top
 Alert Moderators
Search this topic :: View previous topic :: View next topic  
Post new topic   Reply to topic    DIYnot.com Forum Index > Plumbing and Central Heating All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Similar Topics   Replies   Views   Posted 
Joining 8mm Microbore to 10mm plastic CH pipe 3 80 Sat Mar 15, 2014 7:43 am
Advantage of 10mm over 15mm plastic for CH rads? 5 140 Wed Aug 03, 2011 9:34 am
Fitting an additional towel rail with 10mm plastic pipwork 2 60 Mon Nov 14, 2011 8:29 am
Mixing 10mm Plastic and 15mm Copper on one Radiator 6 160 Thu Mar 14, 2013 2:38 pm
15mm/10mm plastic or copper 2 500 Tue Nov 29, 2005 2:45 pm


 
DIYnot
Find an Expert | Find a Supplier | Search DIYnot.com
Network | Advertising | Newsletter
DIY | DIY How To | @home | DIY Wiki | DIY Forum
By using this site you agree to our Terms of Service / Disclaimer.
Please read our Privacy Policy. Copyright © 2000-2014 DIYnot Limited.