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Author Topic: Another pump replacement needed  (Read 1891 times)

dhymers

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Another pump replacement needed
« on: October 28, 2015, 10:40:02 AM »
My pump from my OWB gave up the ghost a few nights ago and I had a spare on kicking around to keep me going for the time being.

The pump was a Grundfos UPS 26-99 that died and I am not positive if this size of pump is needed or not.  Originally the OWB was installed with a pool heat exchanger which I changed last year and now have a 50 plate between my OWB and the boiler in the basement.  The OWB is just over 50' from the house.  The spare one I am using now is a 15-58 which seems to be working efficiently, mind you it hasn't been cold out yet so I am not sure if it is truely big enough when the need arises.

Any recommendations is greatly appreciated.
« Last Edit: October 28, 2015, 10:46:59 AM by dhymers »
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slimjim

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Re: Another pump replacement needed
« Reply #1 on: October 28, 2015, 11:18:09 AM »
What speed were you running the 26-99 on?
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Wood boiler sales, service and installation for the Northeastern USA.

dhymers

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Re: Another pump replacement needed
« Reply #2 on: October 28, 2015, 01:00:06 PM »
Was running it on 2 speed.
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ambonci

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Re: Another pump replacement needed
« Reply #3 on: October 28, 2015, 03:16:56 PM »
I am in the same boat I switched to a 26-99 from a 15-58 and yet to see a difference because of outside temp.  I also have a 50 plate exchanger and I have trouble getting to above 72 degrees in my house when its real cold out so I'm hoping the bigger pump helps.  I'm running my 26-99 on 2 also
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RSI

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Re: Another pump replacement needed
« Reply #4 on: October 28, 2015, 05:21:34 PM »
I would just watch return temps. If you notice the return a lot colder than it used to be then go back to a 26-99. Usually a 15-58 is good with around 50' each way.
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dhymers

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Re: Another pump replacement needed
« Reply #5 on: October 28, 2015, 08:20:41 PM »
Thank for the info, I will leave this one on for now and keep an eye on the temps as the weather starts getting colder. The 26-99 are a stock pump so   I can swap it pretty quick if needed:)
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