Hot Water Baseboard Won't Circulate - HVAC - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 01-16-2009, 10:59 PM   #1
Join Date: Jan 2009
Posts: 1
Rewards Points: 10

Hot Water Baseboard won't circulate

Hot water baseboard heat: First floor is one zone, second floor another each with t-stats and circulator pumps off a common boiler. I keep second floor ~50F as nobody normally sleeps up there. It appears that second floor was picking up enough heat from the first that t-stat never called for heat, but with it being so cold here in Detroit right now (and water not circulating) the pipes froze up in some areas where they cut thru attick spaces. (I am certain at least one attick space fell below freezing.)

I've been blasting all my attick spaces with electric heaters all day; they are all ~50F. Everywhere I can get my hands on the copper pipes, they are clearly not frozen anymore, BUT I still can't circulate water thru second floor zone.

Circulator pump is getting voltage, humming, and getting hot (just like one serving first floor.)

Ideas? Still a chunk of ice somewhere? Could I have somehow created a big air bubble on second floor? Should I try purging second floor zone with tap water pressure?

Second floor zone was fully functional a week ago when I turned it up for overnight guests, but last several days in Detroit have been very cold.


kwodzisz is offline   Reply With Quote
Old 01-17-2009, 05:49 AM   #2
An old Tradesmen
Join Date: Oct 2008
Location: Somewhere
Posts: 34,591
Rewards Points: 8,168

I once had a place at 105F for 8 hours, to get the pipe to thaw in a concealed area.

Your pipe may be frozen in an area in the joist space. Could take 2 days or more if thats the case, with the attic temp only 50.


beenthere is online now   Reply With Quote

Thread Tools
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 softener leak - how do I set it to bypass? Cylanth Plumbing 4 07-21-2010 09:24 PM
No Hot Water comeing out of Faucets gangstacro Plumbing 5 11-30-2008 03:32 PM
Air in hot water baseboard - help! heydobbs HVAC 6 12-08-2006 05:08 PM
Periodic release from (I think) the T&P valve on the water heater alexz Plumbing 3 08-15-2006 10:31 AM
Baseboard Hot Water radiators hotdiggitydog HVAC 2 04-24-2006 11:27 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1