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Author Topic: Hydronic radiators (Myson), one not heating, OWB with TACO pump  (Read 292 times)

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Offline monkeyratmom

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Hydronic radiators (Myson), one not heating, OWB with TACO pump
« on: November 22, 2017, 08:37:37 PM »
Seven years ago installed a Central Boiler 5036 and Myson Radiators. Love the Boiler. Love the radiators, but last year the kitchen radiator didn't want to heat up and now one of the two in the den. Pins aren't sticking. Is the only other recourse to flush the system? The kitchen didn't bother me much, cook something and you wouldn't even notice, but I want both my radiators in the den to work because sometimes I just want to roast myself LOL. This is a closed loop with a TACO pump set up that has worked great all this time. Corrosion inhibitor added at time of installation. There is no air in the system, and hasn't been since installation. Really don't want to do this, I can't imagine it not being a PITA. And it's cold outside.
Home Security telemarketer:  Hi, we are offering free installation in your area through the end of the month, and we would . . .
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Offline trapper

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Re: Hydronic radiators (Myson), one not heating, OWB with TACO pump
« Reply #1 on: November 23, 2017, 12:05:39 AM »
check the impeller in your taco pump.  they deteriorate and loose pressure and flow.  I have to change mine every couple years.
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Offline thecfarm

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Re: Hydronic radiators (Myson), one not heating, OWB with TACO pump
« Reply #2 on: November 23, 2017, 07:32:53 AM »
I was going to say pump too,mine go every few years too. But,you said the one in the kitchen stopped working,but the den ones was fine. I can feel my lines coming in and can tell if the pump is not working as well as it should. A copper line at 180 is hard to hold on to,it's hot,the plastic line can be tolerated.
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Offline Corley5

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Re: Hydronic radiators (Myson), one not heating, OWB with TACO pump
« Reply #3 on: November 23, 2017, 11:19:37 AM »
  We had to replace the pex-al-pex in the old part of the house this fall.  The last couple winters the system wasn't heating like it used to.  Inspection revealed that the inner layer of pex had separated from the aluminum causing restriction.  We replaced it all and fixed the problem.  We think the cause of the failure may have been an overheating event a few years ago :-\
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Offline E Yoder

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Re: Hydronic radiators (Myson), one not heating, OWB with TACO pump
« Reply #4 on: November 25, 2017, 09:31:00 PM »
How are these plumbed and controlled? Homeruns to each rad from a manifold? TRV? Just trying to think through the possible problems.
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