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Author Topic: Enough pump??  (Read 732 times)

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Offline overclocking

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Enough pump??
« on: February 14, 2016, 07:27:58 PM »
http://www.supplyhouse.com/Taco-00R-F6-1IFC-00R-Cast-Iron-Radiant-Heating-Circulator-w-Integral-Flow-Check-1-25-HP?gclid=Cj0KEQiA6IC2BRDcjPrjm_istoUBEiQASrLz1oaVkneolt6IP57GIrqDNia2RxZ-iulhLL924xN_rhEaAuv68P8HAQ

Is this enough pump to push through 130 ft each way to the house, through two exchangers, and a side arm, then return to the boiler via 1 inch line?

Its mounted on the boiler on the hot side pushing toward the house.

Offline jiggysmb

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Re: Enough pump??
« Reply #1 on: February 15, 2016, 11:28:31 AM »
I would say yes but I am pretty new here and to OWB. We have a 1/25 hp grundfos that pumps a little over 100 feet ot the house and back. It is a pretty level shot, so I would think if you were pumping up hill it may need a bit more umph.

Offline Oldman47

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Re: Enough pump??
« Reply #2 on: February 15, 2016, 06:11:36 PM »
That 1 inch pipe will experience significant line losses and you have a long run at over 260 feet plus the heat exchanger. The pump you linked has only a 15 foot head maximum so I doubt it will do the trick.
X27, Stihl 026, Husky 555 AT

Offline overclocking

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Re: Enough pump??
« Reply #3 on: February 15, 2016, 08:02:14 PM »
Thanks. Just trying to figure out why I am not getting the exchange I need. I have been fighting this problem for months and by the time I figure the problem out, winter is probably going to be over. I'm going to add a second 007 pump inside the house to speed up the circulation and see what that does..

Offline hedgerow

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Re: Enough pump??
« Reply #4 on: February 15, 2016, 08:19:27 PM »
I have about 250 ft pipe from my boiler to my house so I am pushing 500 pipe plus fittings. I have Taco 011 out where the boil is and a grundfos ups 26-99fc in the basement. The grundfos is three speed so in the warmer part of the winter I run it on two and in the colder time I run it on high. When the taco goes out I will replace it with a grunfos. I don't think you are pushing enough fluid to get a good heat exchange. When I first put the system in I tryed only running the 011. It worked until the cold part of winter hit and one pump wouldn't cut it so I added another and that solved the problem.

Offline overclocking

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Re: Enough pump??
« Reply #5 on: February 16, 2016, 10:19:02 AM »
I have about 250 ft pipe from my boiler to my house so I am pushing 500 pipe plus fittings. I have Taco 011 out where the boil is and a grundfos ups 26-99fc in the basement. The grundfos is three speed so in the warmer part of the winter I run it on two and in the colder time I run it on high. When the taco goes out I will replace it with a grunfos. I don't think you are pushing enough fluid to get a good heat exchange. When I first put the system in I tryed only running the 011. It worked until the cold part of winter hit and one pump wouldn't cut it so I added another and that solved the problem.

Thats basically exactly what I am seeing, it works great until the temp drops below a certain point, then it linearly gets worse as outside temp drops.


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