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Grundfos UPS 15-58FC strong enough?
josephny
Member Posts: 270
Is a Grundfos UPS 15-58FC strong enough to pump a 50% glycol mix to the 3rd floor of a house from the basement (approx 30')?
I read the literature and it seems like it is not, but I wanted to make sure because my supply house advised and sold me 5 of them.
Thanks.
I read the literature and it seems like it is not, but I wanted to make sure because my supply house advised and sold me 5 of them.
Thanks.
0
Comments
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height is handled by your boiler pressure. you need to know gallons per minute and feet of head to size a circ correctly. most likely the grundfos will work.0
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No surprise that it is more complicated that I understood.
Is the following info enough to determine if the pumps are appropriate:
2gpm, 20 PSI, 3/4" pex-A.
Top floor is 30' above pump and totals approximately 250' of 3/4" pex-A.
2nd floor is 20' above pump and totals approximately 300' of 3/4" pex-A.
1st floor has 4 zones, all 10' above pump:
Zone 1: 250'
Zone 2: 250'
Zone 3: 300'
Zone 4: 300'0 -
The pressure is what lifts the water- pump size is largely irrelevant to height. 30ft would require about 13 psi, so at 20 as you stated, there would be no concern using the 15-58 to move 2 GPM through a 250ft loop of 3/4" pex. I am curious about your emitter(s) though- are you trying to just loop 3/4" tubing around the joists or what is emitting the BTU?0
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If this is a closed, pressurized system, then you’re way off base. Height is irrelevant in this situation.0
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Okay, I'm beginning to get a basic understanding.GroundUp said:The pressure is what lifts the water- pump size is largely irrelevant to height. 30ft would require about 13 psi, so at 20 as you stated, there would be no concern using the 15-58 to move 2 GPM through a 250ft loop of 3/4" pex. I am curious about your emitter(s) though- are you trying to just loop 3/4" tubing around the joists or what is emitting the BTU?
The emitters in all but 1 of the 6 zones are copper/fin-type baseboards. The other zone (in the floor joists in the ceiling of the basement) are in Uponor tracks.
Thank you.0 -
Hot_water_fan said:
If this is a closed, pressurized system, then you’re way off base. Height is irrelevant in this situation.
That's great to know -- I was indeed way way off base. I'm pointed in the right direction now.
Thank you.1 -
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