Bleeding lines

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  #1  
Old 01-23-03, 06:30 AM
DJannone
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Question Bleeding lines

I have a 3 zone hot water heating system in my home and it sounds like there maybe some air in the system. The bleeders seem to be just above the pumps so what must I do to purge the air? Should a zone be turned on to purge as I'm really not sure.
 
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  #2  
Old 01-23-03, 06:32 AM
DJannone
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Question Thermostats

The thermostats in my house have been here for a long time and were used for a forced air furnace. Now I have hot water heat and someone told me the thermostats should be changed is that true and if so is replacing them just a matter of unhooking and rehooking the new thermostat?
 
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Old 01-23-03, 07:00 AM
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DJannone:

If the thermostat is controlling the heat in a satisfactory manner you need not change it.

I'm sure the installer would have changed it if it wasn't compatible with the new system.
 
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Old 01-23-03, 09:49 AM
brickeyee
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Baseboards radiaters? The bleeders should be at the end of each section where it turns into the floor. You bleed from a high spot, not a low spot. If the valves you see are not in a high or highest spot, they are not for bleeding or installed incorrectly.
 
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Old 01-23-03, 11:00 AM
DJannone
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It is hotwater baseboard heat and I can't find a bleeder valve anywhere on the baseboard in the house. The only bleeders I see are just above each zone pump.
 
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Old 01-23-03, 11:04 AM
DJannone
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One thermostat doesn't seem to control the heat correctly. If it is set for say 65 in seems to over ride and might sometimes heat to 70 or 75. Doesn't do it all the time, but sometimes.
 
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Old 01-23-03, 01:51 PM
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Exclamation That's a different story.

DJannone:

In order to give you a good and correct answer we need a detailed description of everything that has to do with your heating system.

If you would be so kind as to read the anouncement at the top of this forum what we need to know is there.

Please answer every question, even if you think it may not apply to you.

We are looking forward to solving your problem.
 
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Old 01-23-03, 02:04 PM
DJannone
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THis may sound stupid, but how to I get to the top of the forum being a first time user?
 
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Old 01-23-03, 02:09 PM
DJannone
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For some reason I can't find your second reply to bleeding lines.
 
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Old 01-23-03, 04:01 PM
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DJannone:

Hey, no question is a stupid question.
That's why we're here!

The anouncement is the first post in the Heating and Cooling Forum.

It says "Please Read B-4 Posting"

Here is the link if you are able to cut and paste the URL.
(If you are not sure how to cut and paste, c'mon back and ask.)

http://forum.doityourself.com/announcement.php?s=&forumid=26
 
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Old 01-23-03, 05:01 PM
DJannone
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1. Live in Rome, NY just north of Utica, NY
2. House is wood framed with vinyl siding on a foundation
3. Wells & McLain furnace
4. Gas about 14 yrs old
5. Not sure how to tell about temperature
6. Think its a Honeywell older type though
 
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Old 01-23-03, 06:02 PM
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my thoughts

first, be sure the tstat that is not working correctly actually goes to something (a valve for instance) and not used since the change over from forced air to hydronic heat. do you have a/c? if so, you may have one heating tstat and one cooling tstat. just a thought. how many wires go the the tstat?
 
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Old 01-23-03, 08:08 PM
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Smile This was kinda confusing!

DJannone:

You had posted two questions at the same time in two different threads.

I merged the two threads so we can keep on the same train of thought.

When you respond to your question, use the reply button at the bottom of this thread.

Thanx.
 
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Old 01-23-03, 08:23 PM
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All right now, lets get this figured out.

DJannone:

Lets see if I understand the problem:
You have baseboard, hot water heat in two zones controlled by two thermostats with a gas boiler.

The problem you are experiencing is that the temperature in one zone overshoots the thermostat setting on occasion.
Also, you hear air in the system.

Questions we need answered:

How are the zones controlled?
Are there two pumps that are controlled by the thermostats or is there one pump and two hydronic valves controlling the water flow?

Were you able to bleed the system and stop the noise in the rads?

Do you have a/c?
 
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Old 01-26-03, 06:45 AM
DJannone
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I have three zones and three thermostats and one on occasion overshoots. Zones are controlled by the thermostat settings aren't they...confused?

If I am correct the bleeder valves are above each pump by the furnace. Do you allow the water to circulate then open each valve to purge the air or turn the water off just below the valve first and then purge the air? For some reason I don't think I have the best setup from what you have told me.

We do not have AC.

Thanks,
Dennis
 
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