re-piped old Radiator with 1/2" AL-PEX not enough flow need to replace with 3/4". HELP
Pictures
- Replacing 1/2" to 3/4" Al-Pex?
- Loud Noise coming from Boiler?
- Any Additional Parts i should use?
- Best way to hide Ugly Black Iron transition to Pex?
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3/4" FostaPEX PEX-AL-PEX Tubing (150 ft. coil)
3/4" PEX Press x 1/2" Male Adapter w/ Sleeve (Lead Free)
3/4" PEX Press x 1/2" Female Adapter w/ Sleeve (Lead Free)
3/4" PEX Press Coupling w/ Sleeve (Lead Free)
1/2" PEX Press 90° Elbow w/ Attached Sleeve (Zero Lead Bronze)
3/4" PEX Press 90° Elbow w/ Attached Sleeve (Zero Lead Bronze)
3/4" PEX Press x 1/2" Female Adapter w/ Sleeve (Lead Free)
ProRadiant 3/4" SVC Compression PEX Adapter, 2-Pack
It would be great for any suggestion about adding to my system, Thanks
Comments
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mattmia2 said:
What kid of boiler is it? What does te near boiler piing look like? Is this radiator connected directly to the manifold and is the manifold piped directly to the boiler or is it sharing this pipe with multiple emitters? You can move quite a bit of heat through a 1/2" pipe.
Cast iron New yorker Boiler CG50DNI-G2 94,000 BTUkcopp said:Are you still warm? What type of boiler as asked above? It may be the manifold they can be pretty restrictive...
4.8 gallons Calefactio HGT-30 Expansion tank
Armstrong S-25 BF Cast Iron In-Line Pump, 1/12 hp
Supply Lines 1 1/4 copper pipes
Radiator is Connected Directly to the Manifold, Like this
All the radiators are ran off their own own loop. 9 radiators 9 loops for each individual one.
Sorry for the late response. Busy with work.
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Are the flow setters open all the way at the manifold?
Are all of your radiators now connected to the manifold?
How about posting some pics of the manifold, the boiler and its near piping?Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
these are the PicsIronman said:Are the flow setters open all the way at the manifold?
Are all of your radiators now connected to the manifold?
How about posting some pics of the manifold, the boiler and its near piping?
https://imgur.com/a/z76g1HG
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You've increased the head in the system going with long runs of 1/2" tubing where there were previously short runs of 3/4" iron pipe. That Armstrong s-25 is a low head, high volume pump that's not designed for the higher head. You need to use a Grundfos ups15-58 or equivalent.Bob Boan
You can choose to do what you want, but you cannot choose the consequences.1 -
So replace 1/2 with 3/4 and replace pump.Ironman said:You've increased the head in the system going with long runs of 1/2" tubing where there were previously short runs of 3/4" iron pipe. That Armstrong s-25 is a low head, high volume pump that's not designed for the higher head. You need to use a Grundfos ups15-58 or equivalent.
Any additional suggestions?
Because i want to put in the order today so i can have the heat running the remaining of the winter to make sure its working correct.
Thank you.0 -
I really appreciate all of the information i'm getting.0
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@Ironman I looking at UPS26-99FC, 3-Speed Circulator Pump, 1/6 HP, 230 volt or UPS26-99FC, 3-Speed Circulator Pump, 1/6 HP, 230 volt. or would the Grundfos ups15-58 be efficient.0
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Got it. so i can keep the 1/2'' or replace with 3/4''?Ironman said:The 26-99 would be too large. Use the 15-58. I've got radiant floors with 14 loops of 1/2" PEX at 250' each and a 15-58 on medium speed doing it all just fine.
Thanks0 -
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I still think that manifold is part of the issue. I had problems w/ that style manifold in the past.
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Flue Pipe? I don't know what that meansRobert_25 said:Wrong circulator.
Is your pex laying on the flue pipe of the boiler?0 -
ThanksIronman said:The 1/2" should be fine with a new circulator.
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How did you fix your situation? did you replace the manifold?kcopp said:I still think that manifold is part of the issue. I had problems w/ that style manifold in the past.
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Where it passes above the boiler, it is on(or too close to) the vent that goes in to the chimney. The pex needs a lot more support in general, but make sure it can still expand and contract in length.DennisBrownNYC said:
Flue Pipe? I don't know what that meansRobert_25 said:Wrong circulator.
Is your pex laying on the flue pipe of the boiler?1 -
Got it. I will A hanger to that area. To strap it.mattmia2 said:
Where it passes above the boiler, it is on(or too close to) the vent that goes in to the chimney. The pex needs a lot more support in general, but make sure it can still expand and contract in length.DennisBrownNYC said:
Flue Pipe? I don't know what that meansRobert_25 said:Wrong circulator.
Is your pex laying on the flue pipe of the boiler?
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@kcoppDennisBrownNYC said:
How did you fix your situation? did you replace the manifold?kcopp said:I still think that manifold is part of the issue. I had problems w/ that style manifold in the past.
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Yes.DennisBrownNYC said:
How did you fix your situation? did you replace the manifold?kcopp said:I still think that manifold is part of the issue. I had problems w/ that style manifold in the past.
I went w/ a very low pressure drop Sioux chief manifold. No flow meters...just ball valves. Made all the difference.0 -
Thankskcopp said:
Yes.DennisBrownNYC said:
How did you fix your situation? did you replace the manifold?kcopp said:I still think that manifold is part of the issue. I had problems w/ that style manifold in the past.
I went w/ a very low pressure drop Sioux chief manifold. No flow meters...just ball valves. Made all the difference.0
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