Stumped in Repairing In-Floor Radiant Heat System

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Old 12-26-11, 05:32 PM
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Stumped in Repairing In-Floor Radiant Heat System

All,

I am having trouble with my infloor radiant heating system. It is a closed loop. The boiler temperature is 140 degrees but after the mixing valve (and before the pump) the temperature is 70 degrees. The pressure in the boiler is 20 psi. My pump is running all of the time and I cannot get the temp up. Do the mixing valves go bad? Do they get stuck? Could it be something else? My valve is an ESBE TMV 140 degrees to 110 degrees.

Any feedback would be appreciated.
 
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Old 12-26-11, 07:26 PM
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Hi Brad, Yeah, mixing valves can go bad... get stuck...

See if this PDF file helps you:

http://na.heating.danfoss.com/PCMPDF...structions.pdf

There are instructions on disassembling/cleaning/repairing ...
 
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Old 12-31-11, 10:47 AM
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Thank You!

Your advice was perfect!
 
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