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 10-28-2009, 03:33 PM   #1
Newbie
 
Join Date: Oct 2009
Posts: 1
Rewards Points: 0
Share |
Default

Basement Radiators


Hello to everyone! I have a two-pipe oil-fired hot-water boiler system in a two story house that uses radiators. The radiators on the first and second floor heat just fine, however, there are two radiators in the basement that will not heat. Each radiator comes off of the supply using a monoflow T, and returns back to the supply (not the return) using a monoflow T. Both radiators are one of the first to come off of the supply. The monoflow Ts are installed correctly. The radiators are always ice cold. The pipes from the main running horizontal over to the radiators are warm, but nothing goes down the verticle. There are bleeders right at the elbows going down to radiators. I have bled the radiators and have no air. Now once in a while when the boiler is under a heavy load, one of the radiators will get hot, the other one remains cold. However, after trying to bleed them on last time (I have a manual fill for the boiler) I must have put too much water in the system because the next morning, the pressure was up around 30+ psi, but guess what...both radiators were hot! Why will they work at the extreme pressure but not at 12-18psi? One thing is that the monoflow Ts are only separated by about 6 inches or pipe. What can I do to get flow through these radiators?

BrettY is offline   Reply With Quote
Old 10-28-2009, 06:13 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,098
Rewards Points: 96
Default

Basement Radiators


Either:
A. Remove the pipe between the mono tee's and replace it with the next size smaller.
B. Replace your current circ, with one that is capable of over coming the resistance of pushing hot water down.
C. Pipe them up as their own zone, with their own circulator.

beenthere is offline   Reply With Quote
Old 10-29-2009, 06:43 PM   #3
Member
 
JohnH1's Avatar
 
Join Date: Jan 2009
Location: Chicago, IL.
Posts: 428
Rewards Points: 0
Default

Basement Radiators


Increasing the pressure keeps the air in solution and flowing with the water. when you lower the pressure air comes out of solution it sounds like you are getting airbound. you need to look closer at the piping. Are both the bleeders at the highest point of the piping on the radiator supply and return?
JohnH1 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
Cutting out a concrete basement floor jeffhoward001 Building & Construction 21 01-17-2012 08:51 PM
A few Q's on Finishing My Basement - Is there a FAQ on this? ossrocks Remodeling 6 01-07-2009 12:21 PM
basement floor drain problem radioiowa88 Plumbing 5 10-22-2008 10:52 PM
Sunlight for a Basement Room prglor Remodeling 1 08-31-2008 04:29 PM




Top of Page | View New Posts

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