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Author Topic: I'm impressed  (Read 30393 times)

RSI

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Re: I'm impressed
« Reply #45 on: April 10, 2017, 05:33:23 PM »

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E Yoder

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Re: I'm impressed
« Reply #46 on: April 10, 2017, 06:08:42 PM »

We used some Wilo 16's and 21's about 6-8 years ago but had probably a 25% failure rate within a year or two. But we may have got a bad batch. The 3 speed 21's had a weak speed switch that would break. Dunno.

The 16 sounds a bit small for a long run unless your desired flow rate is pretty low. Do the math figuring what Dt your system can tolerate. Pipe size will definitely affect the head needed. Velocity needed may vary depending on the height of the boiler to the buildings. Larger piping with small circs can be tough to blow air downhill.

Just a few thoughts...
« Last Edit: April 10, 2017, 06:20:41 PM by E Yoder »
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DaveB

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Re: I'm impressed
« Reply #47 on: April 12, 2017, 11:43:22 AM »

Thanks RSI and E Yoder

I will be using the 1" pipe underground. I think I might consider using 1" copper inside also. Don't know if I need it but most of the systems I see pictures of use 1"
Ya, the Wilo 16 seems to be discontinued like the link says. Guess maybe he has some old stock. Any suggestions for a good pump that might be available in Canada. SupplyHouse  seems to have lots of stuff, just that they won't ship to Canada.
How would I determine what flow rate is optimal ?
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E Yoder

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Re: I'm impressed
« Reply #48 on: April 12, 2017, 08:05:50 PM »

Flow rate needed is one part of the equation, the delta t (return water temp difference) that your system can tolerate is as big a factor as flow. I don't remember the details of what you're tieing into. Some systems are much more touchy about low flow than others. Copper baseboard for instance.
« Last Edit: April 12, 2017, 08:15:52 PM by E Yoder »
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slimjim

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Re: I'm impressed
« Reply #49 on: April 13, 2017, 02:58:09 AM »

Oh, the copper baseboard doesn't care what the return temps are, your wife might and your stove might but the copper baseboard doesn't give a hoot, just for a matter of record, how often do you actually work with copper baseboard Eldon?
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E Yoder

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Re: I'm impressed
« Reply #50 on: April 13, 2017, 05:36:31 AM »

Did I disagree?

I am concerned that the long 1" line will struggle to deliver enough flow to satisfy what's needed flow-wise in the house.
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DaveB

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Re: I'm impressed
« Reply #51 on: April 14, 2017, 08:57:38 AM »

Actually, most of the valves etc I see are 3/4". Is it okay to knock the 1" pipe coming from outside down to 3/4" ?
Still trying to source out the right pumps to install at the furnace. Think I found someone to supply pipe,valve etc in the Toronto area. They are called NEXT Supply. Seem to deal with everything I need. They say they are wholesalers but I asked and they will deal with the public.

Have a great Easter weekend.
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RSI

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Re: I'm impressed
« Reply #52 on: April 14, 2017, 09:11:18 AM »

I would go with a Grundfos 26-99. You might be able to run on now which is a little more flow than that wilo but I think you will need more than that and probably need high speed.
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slimjim

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Re: I'm impressed
« Reply #53 on: April 14, 2017, 09:47:46 AM »

Do not choke your main loop plumbing down!
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DaveB

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Re: I'm impressed
« Reply #54 on: April 14, 2017, 10:11:01 AM »

Thanks for the pump suggestion RSI. I will look into them and see if they are available to me here..

So, I will need to do some more looking to find 1" valves and such. That is why I ask here...thanks SlimJim
Is there somewhere I can figure out what flow rate and head I need ? Must be a calculation somewhere..
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Re: I'm impressed
« Reply #55 on: April 14, 2017, 10:23:14 AM »

I know that Taco has a very good site for figuring head and flow rates but I don't have it off the top of my head, search Taco head charts.
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mlappin

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Re: I'm impressed
« Reply #56 on: April 15, 2017, 10:52:31 AM »

I know that Taco has a very good site for figuring head and flow rates but I don't have it off the top of my head, search Taco head charts.


http://www.taco-hvac.com/uploads/FileLibrary/SelectingCirculators.pdf
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mlappin

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Re: I'm impressed
« Reply #57 on: April 15, 2017, 10:53:39 AM »

Thanks for the pump suggestion RSI. I will look into them and see if they are available to me here..




http://www.supplyhouse.com or even Amazon

Oh wait…you already said something about not being able to ship to Canada? Or was that another thread/person.

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schoppy

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Re: I'm impressed
« Reply #58 on: April 15, 2017, 11:20:29 PM »

Is the polar a mild steel boiler? It seems uncanny how similar the Polar and Heatmaster are in design. Wondering how they compare in efficiency?
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RSI

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Re: I'm impressed
« Reply #59 on: April 16, 2017, 12:46:07 AM »

Is the polar a mild steel boiler? It seems uncanny how similar the Polar and Heatmaster are in design. Wondering how they compare in efficiency?
https://www.epa.gov/sites/production/files/2016-03/usepa_certified_hydronic_heaters_list.xlsx
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