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Old 12-25-2008, 10:25 PM   #1
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hot water boiler heating

I had a water heater replaced and the technicians played around with the taps to my boiler, now I am not sure which ones should be turned on.

I have attached pictures. Currently the one leading to the expansion tank and the one above the green box are turned on. Is this correct or should others be on/off?

My PSI is between 15-20, closer to 20. I noticed that the pipe leading to the floor is releasing water, guess the PSI is too high when the furnace is running. All rads are hot when heat is on and all have been bled.

Can anyone help?

Is the tap that is before the pressure relief valve (that red bell like thing in the last picture) should that be turned on or off? Seems to be a cold water tap?
Attached Thumbnails
hot water boiler heating-dsci0010.jpg   hot water boiler heating-dsci0011.jpg   hot water boiler heating-dsci0012.jpg   hot water boiler heating-dsci0013.jpg   hot water boiler heating-dsci0014.jpg  

hot water boiler heating-dsci0015.jpg  


Last edited by raineywillow; 12-28-2008 at 09:04 AM.
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Old 12-26-2008, 04:55 AM   #2
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If your getting heat, then the one at the circ is open also, as it should be.

Your relief valve may need to be changed oout now.
Sometimes they get dirt in them, and opening them wide open will flush the dirt out.
But often they don't reseat.

There is a chance that the expansion tank needs drained now, if the valve between the boiler and water heater didn't hold while they were changing out the water heater.


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Old 12-26-2008, 07:02 PM   #3
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The pressure relief valve needs to be replaced or cleaned because there is "slag" in it,.
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Old 12-26-2008, 07:51 PM   #4
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total of 3 red handles.......need to be fully open the ones above and below the circ.pump and the final one leading to the expansion tank and with tha you will stop leaking the relief blowoff because the ex-tank will take the expansion of the water during the heating cycle.
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