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 12-14-2012, 04:26 PM   #1
Member
 
Join Date: Dec 2012
Posts: 81
Rewards Points: 75
Default

extending hot water heat to addition


Hi -- new here and first post! I'm planning an addition and need to extend my current hot water heat in. the furnace/boiler is adequate in size so that is not an issue. I plan on using radiators vs. baseboard like the rest of the house. I'm planning a crawlspace foundation, which will be about 2' lower than the main structure. I'm worried that the new pipes will be lower than the rest of the system and create issues when the system needs to be drained, and also in circulating the water to the new radiators? thx

yellowkid is offline   Reply With Quote
Old 12-14-2012, 09:09 PM   #2
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,714
Rewards Points: 2,062
Default

extending hot water heat to addition


Quote:
Originally Posted by yellowkid View Post
Hi -- new here and first post! I'm planning an addition and need to extend my current hot water heat in. the furnace/boiler is adequate in size so that is not an issue. I plan on using radiators vs. baseboard like the rest of the house. I'm planning a crawlspace foundation, which will be about 2' lower than the main structure. I'm worried that the new pipes will be lower than the rest of the system and create issues when the system needs to be drained, and also in circulating the water to the new radiators? thx
Ayuh,... As far as circulatin,' the elevation difference won't matter in the least, once the system is refilled, bled, pressurized, 'n runnin'....

If you think you'll ever need to drain the loop, ya,.. ya need a drain at the lowest point...

Bondo is offline   Reply With Quote
The Following User Says Thank You to Bondo For This Useful Post:
beenthere (12-15-2012)
Old 12-14-2012, 10:26 PM   #3
Roofmaster
 
Join Date: Oct 2012
Location: Maryland
Posts: 3,668
Rewards Points: 2,094
Default

extending hot water heat to addition


Cant you just put a T on the end of the loop, and run the pipe out to a curb cock outside the foundation? That will be your system drain. The pump will handle a 2 ft. head on the return with no problem. Bleed at the radiators, no?
jagans is offline   Reply With Quote
Old 12-15-2012, 06:05 AM   #4
Member
 
Join Date: Oct 2009
Posts: 67
Rewards Points: 75
Default

extending hot water heat to addition


depending on the size of the addition might want to use zone control and make it a seperate zone
mrairflow is offline   Reply With Quote
The Following User Says Thank You to mrairflow For This Useful Post:
oh'mike (12-15-2012)
Old 12-15-2012, 07:30 AM   #5
Items wanted: Time
 
Join Date: Nov 2012
Location: Howell, MI
Posts: 195
Rewards Points: 150
Default

extending hot water heat to addition


If it's for freeze protection, just run glycol through it, just make sure you can isolate each loop separately.
NiNe O is offline   Reply With Quote
Old 12-17-2012, 02:56 PM   #6
Member
 
Join Date: Dec 2012
Posts: 81
Rewards Points: 75
Default

extending hot water heat to addition


excellent thx gentlemen! was thinking too that i should just add a drain at the lowest point in the addition. I think the original setup was gravity but now I've got a circulation pump
yellowkid is offline   Reply With Quote
Old 12-17-2012, 07:21 PM   #7
Thread killer
 
Join Date: May 2011
Location: Southwestern Ontario, Canada
Posts: 303
Rewards Points: 266
Default

extending hot water heat to addition


Is it a pump added to an old gravity system or has all the piping been changed to a forced water supply? It will make a difference on how you supply the addition depending on what you already have.
__________________
You can have it good, fast or cheap. Pick two.
Canucker is offline   Reply With Quote
Old 12-17-2012, 07:32 PM   #8
Member
 
Join Date: Oct 2011
Location: pa
Posts: 4,511
Rewards Points: 2,336
Default

extending hot water heat to addition


if your going to use radiatiors over baseboard ..may consider installing a zone valve for the addition... and t stat..ben sr.......sorry same thought ..as another should have read all post...

Last edited by ben's plumbing; 12-17-2012 at 07:34 PM. Reason: can't read
ben's plumbing is online now   Reply With Quote
Old 12-18-2012, 12:24 PM   #9
Member
 
Join Date: Dec 2012
Posts: 81
Rewards Points: 75
Default

extending hot water heat to addition


the boiler/pump etc is all new, the two main lines are original to the system but all the lines to the radiators throughout the house are new 3/4 copper. my guess is I need to run larger lines out to the addition with branches to the new radiators? looking at 3-4 new radiators in the addition. again thx for the help -- this is really helpful!
yellowkid is offline   Reply With Quote
Old 12-18-2012, 06:55 PM   #10
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,714
Rewards Points: 2,062
Default

extending hot water heat to addition


Quote:
Originally Posted by yellowkid View Post
the boiler/pump etc is all new, the two main lines are original to the system but all the lines to the radiators throughout the house are new 3/4 copper. my guess is I need to run larger lines out to the addition with branches to the new radiators? looking at 3-4 new radiators in the addition. again thx for the help -- this is really helpful!
Ayuh,... If it's gonna be a separate zone, with it's own control, T at the pump, 'n add another pump, 'n run 3/4" or 1" pex through to the addition, 'n feed yer radiators...

What kinda boiler,..?? Gas,..?? What controls,..??

Bondo 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
Water heater solutions to get hot water in timely manner daluu Plumbing 22 05-07-2012 09:44 PM
Heat pump starts initially but will not come back on to maintain temps johnniebravo HVAC 53 11-22-2011 08:48 PM
My hot water recirculation system is a disaster Michael Neill Plumbing 9 11-05-2010 12:31 PM
water borehole question joeuser General DIY Discussions 2 04-18-2010 11:33 PM




Top of Page | View New Posts

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