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Old 12-16-2007, 01:43 PM   #16
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How do I increase my pressure so I can bleed air?


You have an old style expansion tank. I am not completely sure how they function but it should be filled about half way with water.
Your relief valve shouldn't have anything coming out of it unless your boiler is approching 30lbs of pressure. If their is it's probably time for a new valve. You could try just hitting the handle and letting it spray a little bit (extremely hot water be careful) to knock and debris in it out.
If you shut the expansion tank off even for a few minutes to drain it, it is possible to get a pressure build up.
As for bleeder valves look for a coin vent and a tapped elbow. You will have to drain the system and solder to install it.
Have you tried purging it yet? Some systems can take half an hour or so to fully purge.

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Old 12-16-2007, 01:50 PM   #17
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How do I increase my pressure so I can bleed air?


I happened upon your tragedy here and I am in a similar situation as you are. I have not yet opened or closed valves though. We dont seem to have enough pressure or water in our system and have no heat in the upstairs kids bedrooms. I have been very frustrated tring the bleed lines and such. I have no answers for you just wanted to let you know that your arent alone alone and that your writing is kind of funny.
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Old 12-17-2007, 05:43 PM   #18
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How do I increase my pressure so I can bleed air?


You can bump up the pressure while purging or bleeding using the fast fill feature on your fill valve. Just keep it below 30psi. If your relief valve starts blowing and you're nowhere close to 30 you need a new valve.
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Old 12-17-2007, 09:06 PM   #19
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How do I increase my pressure so I can bleed air?


After a close look at the relief valve... it's not the right kind for the furnace. Wrong BTUs. I had a plumber come out and look over a few things. He said he can replace the valve and put in a few bleeders for me. I'd like to do it myself but who knows.

As far as the fast flow valve goes. I haven't been able to open it.. is it supposed to be ridiculously difficult to move or am I missing something?

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