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 11-04-2010, 04:49 PM   #1
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,257
Rewards Points: 1,010
Default

Upstairs baseboards not getting hot


I have a mono-flo system. My first floor is all cast-iron radiators. Second floor is all tube&fin baseboards. It is all on one zone (I know this is a no-no). But my baseboards don't even get lukewarm. They are absolutely cold. even when the boiler is criculating. The aquastat on the boiler is set to max out at 160F. I never use the upstairs (till now).

All of my cast-iron radiators are set up with a normal T to feed, and a mono-flow "venturi" tee on the return, like this:



If I am looking correctly, it seems the baseboards on the 2nd floor are fed from the basement with a monoflow tee like this one on the supply, and return with a normal tee. Seems opposite from the radiators. I can touch the main right at the tee pictured below and it is very hot. If I touch the pipe about 8" away (not on the main, where it branches to feed the radiators) it is barely lukewarm. Somehow water is not being pumped through the baseboards. Do I need to add a monoflow on the return, facing the other direction?


__________________
Andrew

secutanudu is offline   Reply With Quote
Old 11-04-2010, 05:20 PM   #2
Retired Electrician
 
Join Date: Aug 2010
Location: brooklyn ny
Posts: 51
Rewards Points: 75
Default

Upstairs baseboards not getting hot


you need monoflow tee on the supply and return

fy171 is offline   Reply With Quote
Old 11-04-2010, 05:26 PM   #3
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,257
Rewards Points: 1,010
Default

Upstairs baseboards not getting hot


Is it different for a baseboard than for a radiator? I assume so...because i only have mono-flo tees on the returns on my radiators and they work fine.
__________________
Andrew

secutanudu is offline   Reply With Quote
Old 11-04-2010, 05:36 PM   #4
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

Upstairs baseboards not getting hot


Any way to bleed the 2nd floor pipes ?
Might be air in the system
Scuba_Dave is offline   Reply With Quote
Old 11-04-2010, 05:38 PM   #5
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,257
Rewards Points: 1,010
Default

Upstairs baseboards not getting hot


I don't think there's a bleeder valve at all up there...any other way?
__________________
Andrew

secutanudu is offline   Reply With Quote
Old 11-04-2010, 05:41 PM   #6
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

Upstairs baseboards not getting hot


Do you have constant fresh water feed to the system ?
Mine has a water valve that can be opened or shut

Is the 2nd floor all on one loop ?
Or is each baseboard on its own loop ?
Scuba_Dave is offline   Reply With Quote
Old 11-04-2010, 10:19 PM   #7
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,257
Rewards Points: 1,010
Default

Upstairs baseboards not getting hot


There is a freshwater feed to the boiler which is currently open.

I think each baseboard is its own loop.
__________________
Andrew

secutanudu is offline   Reply With Quote
Old 11-04-2010, 10:50 PM   #8
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

Upstairs baseboards not getting hot


Each of my radiators can be bled
The baseboards I have seen have been a one pipe system
I'm not sure how you flush air out of what you have
Have you pulled some of the end caps to look for bleeder valves ?
Scuba_Dave is offline   Reply With Quote
Old 11-05-2010, 07:57 AM   #9
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,257
Rewards Points: 1,010
Default

Upstairs baseboards not getting hot


Just checked, no bleeder valves. The pipe is exposed for a few inches in the back of a closet, maybe I could add a bleeder in there.

I am starting to think it's the monoflo tees causing the problem. I've never done any plumbing work on my heating loop before. I have 3 valves right near the boiler. One on the send, one on the return, and one on the freshwater feed. I am assuming I can just close all 3 of those, cut the pipe, and sit there with a couple of buckets till the water stops coming out?
__________________
Andrew

secutanudu is offline   Reply With Quote
Old 11-05-2010, 11:38 AM   #10
Member
 
Join Date: Jan 2010
Location: Pennsylvania
Posts: 594
Rewards Points: 500
Default

Upstairs baseboards not getting hot


I don't mean to derail the discussion, but aren't hot water systems most efficient at about 180F? I do see that have radiators, which may be uncomfortably hot to the touch at 180 (if not enclosed) and that may be why you have the system at 160F.
operagost is offline   Reply With Quote
Old 11-05-2010, 02:11 PM   #11
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,257
Rewards Points: 1,010
Default

Upstairs baseboards not getting hot


I normally keep it at 180, I just have it turned down a little since it isn't that cold yet,
__________________
Andrew

secutanudu is offline   Reply With Quote
Old 11-05-2010, 03:41 PM   #12
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

Upstairs baseboards not getting hot


I actually have my boiler @140 right now
180 is way too hot with a kid in the house
Even at 140 as it shoots over that temp the radiators can get pretty hot

3rd degree burns from water temps:
160 degree water takes 1 second to burn a child
130 degree water takes 30 seconds
Scuba_Dave is offline   Reply With Quote
Old 11-05-2010, 04:17 PM   #13
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,980
Rewards Points: 3,630
Default

Upstairs baseboards not getting hot


What is the pressure reading on your boilers gauge?

Any chance the circulator was changed out either before you moved in. or shortly after you moved in.
beenthere is online now   Reply With Quote
Old 11-05-2010, 05:07 PM   #14
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,257
Rewards Points: 1,010
Default

Upstairs baseboards not getting hot


I'll have to check the pressure, but I THINK it's normally around....50ish. The circ hasn;t been changed since i moved in, and I dont think right before.
__________________
Andrew

secutanudu is offline   Reply With Quote
Old 11-05-2010, 06:38 PM   #15
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,980
Rewards Points: 3,630
Default

Upstairs baseboards not getting hot


50ish. Is well above normal for a residential boiler.

beenthere is online now   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
Should new baseboards go on top of carpet? hawks81 Flooring 4 08-23-2010 12:25 PM
To turn off the upstairs AC or not Big Dawg HVAC 18 08-11-2010 07:15 PM
Masking off baseboards 2 PaintedSurface Painting 1 01-18-2010 05:30 AM
cream trim downstairs, white trim upstairs, advice for stairs? allyr Painting 1 09-26-2009 05:01 PM
HVAC Upstairs QUESTION Statecowboy HVAC 1 09-15-2007 12:15 PM




Top of Page | View New Posts

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