Pressure Release Valve releases water

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  #1  
Old 04-20-07, 04:22 PM
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Thumbs down Pressure Release Valve releases water

Recently, we've been having a problem with our Columbia Emerald EM-85 boiler. The pressure release valve or emergency valve (sorry, don't know boiler terms) lets out water. We set the boiler to a lower temperature, and the valve releases less water, but still releases some. Does anyone know why this is happening and how I can fix it? Or will a professional have to come in and fix it?

Thanks in advance!
 
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Old 04-20-07, 05:57 PM
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Relief Valve

The single most common cause for a relief valve to open is a bad expansion tank.
If you can take some pictures of the boiler & nearby piping, it would make it a lot easier to explain how to check what.
Pictures can be posted on photobucket.com or similar site & a link to them posted here since we don't have the capability of hosting photos here.
 
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Old 04-20-07, 06:16 PM
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Oops, sorry, forgot about that!

http://i7.************/40k4r3p.jpg
http://i15.************/2hz1t9c.jpg
http://i16.************/2cxaszq.jpg
http://i1.************/2jfdr7o.jpg

Sorry that the pictures are kind of big.

Thanks for the reply!
 

Last edited by Rich1966; 04-20-07 at 06:18 PM. Reason: forgot picture
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Old 04-20-07, 06:57 PM
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Did you happen to see what the pressure was in the furnace when the relief valve was leaking? Does it leak all the time? Normally once they start leaking, they won't stop. You will probably just have to change your expansion tank and relief valve. That should solve the problem. And turn the temperture back up to where it was.
 
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Old 04-20-07, 07:10 PM
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The pressure was around 30.

Thanks, I'll have to try that.

Another thing I need to ask:

How often should I have the boiler serviced?

Thanks for the reply! :-)
 
  #6  
Old 04-20-07, 07:39 PM
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The relief valve blows at(around) 30psi and the furnace generally won't get that high unless you have a bad expansion tank.

A oil burner should be serviced once a year by a qualified professional.
 
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Old 04-20-07, 07:47 PM
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Smile Thanks!

Thanks once again. This is a great site!
 
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