Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-13-2009, 02:59 PM   #16
KGP
Member
 
Join Date: Feb 2009
Location: NJ
Posts: 51
Share |
Default

Hydronic Radiant Floor Heat


Quote:
Originally Posted by Dragon View Post
Not sure if you added them later but with the way the PEX is already attached I think you might have missed a critical step. You should really add distribution fins to the pex tubing to help spread the heat out. These can be bought ready made or you can make them yourself. Here is awebpage that shows homemade ones being installed in a house. You could make something similar.

http://www.builditsolar.com/Projects...Shed/House.htm

Lots of other good info on that website too.
Thanks for the link. interesting. I use the bubble insulator on top of r-13 but did not put these plates... never saw that before.

Quote:
Originally Posted by Dragon View Post

You should also try to insulate beneath the PEX to focus the heat upwards into the floor and not let heat go to waste heating up those joist cavaties.
I did insulate in between the joists keeping the heat radiating UP and heating the joist and floor rather than heating that whole cavity like you said, but thanks for the reminder.


I think I am just going to focus on completing the rest of the bathroom to get everything sealed up. I know it is installed and have a bleed accessible for latter should I need it. After the room is back in working order, I can mess around more when I start the lower floors radiant system using the proper pump and running a proper manifold eliminating the rest of the house's radiators.

KGP is offline   Reply With Quote
Old 02-14-2009, 06:19 AM   #17
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,401
Default

Hydronic Radiant Floor Heat


Pex/radiant systems need to have a purge set up, not a bleed set up.
beenthere is offline   Reply With Quote
Old 02-14-2009, 06:52 AM   #18
KGP
Member
 
Join Date: Feb 2009
Location: NJ
Posts: 51
Default

Hydronic Radiant Floor Heat


so leaving it the way it is and coming back to it, to complete the rest of the radiant heat system correctly after the bathroom is put back together would be ok?
KGP is offline   Reply With Quote
Old 02-14-2009, 07:09 AM   #19
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,401
Default

Hydronic Radiant Floor Heat


If you install a purge system.
And, seperate it from the piping to the other rad/pex you install for the room below it.
beenthere is offline   Reply With Quote
Old 02-14-2009, 07:33 AM   #20
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,401
Default

Hydronic Radiant Floor Heat


See Drawing.

Circ was only put on return line for ease of drawing, not for where it has to be.
Attached Files
File Type: pdf Radiant Loop 1.pdf (5.6 KB, 166 views)
beenthere is offline   Reply With Quote
Old 02-14-2009, 08:44 AM   #21
KGP
Member
 
Join Date: Feb 2009
Location: NJ
Posts: 51
Default

Hydronic Radiant Floor Heat


Thanks for the drawing. I will be revisiting this after I finish the room. I appreciate all the time you have spent answering my idiotic questions.

I was however looking through an expensive ($200!!) book I got called Modern Hydronic Heating by John Siegenthaler where is says that I can infact run the radiant floor heat off of the same system as my radiators. What it says to do is to use the return side going to the boiler to feed the pex. Obviously I would still need some other componets, but this addresses the issue raised by John about the temps being different requirements for radiators and radiant floor... If the pex requires less heat, utilizing the return water where the heat has been exchanged out of if by the radiators, the temp would be lower... sounds logical to me. What do you think?
KGP is offline   Reply With Quote
Old 02-14-2009, 10:19 AM   #22
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,401
Default

Hydronic Radiant Floor Heat


Yes, that method requires adding a circulator, and a few other controls.

There are 2 basic different ways to set that configuration up.

But, if your doing the whole house in radiant, or a large portion, then its better to do a full manifold and mixing set up.
beenthere is offline   Reply With Quote
Old 05-02-2011, 08:31 AM   #23
Newbie
 
Join Date: May 2011
Posts: 1
Default

Hydronic Radiant Floor Heat


I was wondering what the solution was and if you were able to get it to work finally? I'm in the middle of doing exactly the same thing (literally).

mark '87 930 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat source for hydronic radiant floor heating mattedfred HVAC 1 11-19-2008 05:58 PM
new hydronic radiant floor heating kit - thoughts on. notenoughhours Plumbing 3 11-04-2008 12:42 PM
Hydronic radiant Joe F HVAC 2 03-03-2008 05:33 PM
elec. floor radiant or hydronic ??? James Con HVAC 1 10-16-2007 06:36 AM
Laminate in Basement over Hydronic Radiant Heat art2670 Flooring 3 10-12-2007 10:17 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.