No water coming from purge valve.


  #1  
Old 10-07-05, 04:11 PM
JTW4462
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Angry No water coming from purge valve.

I have 3 zones in my system and the first 2 purged fine. I got all the air out and everything was heating up nice with no noise. then I went to do the third zone (upstairs bedrooms) and when I opened the valve nothing came out... nothing! I am doing it the same way as the other 2 so what gives? I even left it open for a bit and waited and still nothing.
 
  #2  
Old 10-07-05, 04:29 PM
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Nothing from purge valve

The boiler pressure may be too low to push the water that high. Crank it up to 20-25 psig for purging purposes only. After the air comes out turn it back down to around 15.
 
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Old 10-07-05, 04:31 PM
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Wink

Is the auto fill on???? What is the boiler psi .Need to 2nd floor should be around 18 psi.

ED
 
  #4  
Old 10-07-05, 04:34 PM
JTW4462
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Boiler preasure was up around 30 and the auto fill is open. The preasure is almost always that high... I don't know how to adjust it.
 
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Old 10-07-05, 04:46 PM
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Boiler pressure

Pressure should NOT be that high. Use a tire gauge to check the pressure on the diaphragm tank. It will be the same as the system pressure. Post back with results.
 
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Old 10-07-05, 04:49 PM
JTW4462
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ok... well the preasure on the tank is always like 12-15 but the preasure/temp gauge on the boiler is always higher..
 
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Old 10-07-05, 05:04 PM
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gauge

The gauge is lying to you. A common problem. Does your bladder tank look like this: http://www.amtrol.com/filltrol.htm
 
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Old 10-07-05, 06:10 PM
JTW4462
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yea... it's T H I S
 
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Old 10-07-05, 06:17 PM
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Good shot

Good pic & a bonus. That red device above & right of the tank is the water feeder. Loosen the lock nut on top & turn the screw in about 1 1/2 turns. Check the pressure on the tank & if not up to 20-25 turn the screw in 1/2 turn at a time until you get there. Give the feeder 1-2 minutes between adjusting & checking the pressure. When done purging, be sure to turn the pressure back down to about 15.
 
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Old 10-07-05, 06:26 PM
JTW4462
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  #11  
Old 10-08-05, 09:30 AM
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Pics

In the pic labeled Main pump, I don't like the looks of the lower part of the boiler. It looks like it has been VERY hot. I strongly suggest you get a pro in there to look at it before you have a fire or are asphyxiated.
 
  #12  
Old 10-08-05, 03:43 PM
JTW4462
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what part are you looking at specificaly?
 
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Old 10-08-05, 04:48 PM
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Hot spot

In the photo labeled "main pump", I'm looking left of the pump at what appears to be the lower part of the boiler. It looks as if it has been very hot, to the point of blistering the paint.
 
  #14  
Old 10-10-05, 08:55 PM
JTW4462
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Originally Posted by Grady
In the photo labeled "main pump", I'm looking left of the pump at what appears to be the lower part of the boiler. It looks as if it has been very hot, to the point of blistering the paint.

It's just filthy.
 
 

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