"Best" Constant circulator for primary loop?
- CoalisCoolxWarm
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- Joined: Wed. Jan. 19, 2011 11:41 am
- Location: Western PA
- Stoker Coal Boiler: Keystoker KA-6
- Hand Fed Coal Furnace: old Sears rebuilt, bituminous- offline as of winter 2014
- Coal Size/Type: Anthracite Buckwheat
- Other Heating: Oil Boiler
My primary loop is about 20-25ft total that goes horizontally down the wall, up about 18 inches and back.
I am considering running a circulator constantly. Currently has Taco 007.
This is to allow my Living Room to gravity flow as well as run its zone pump (simply remove the flow check).
The 007 is a good little circulator, but is there something better and more efficient for 100% duty cycle?
Thanks.
I am considering running a circulator constantly. Currently has Taco 007.
This is to allow my Living Room to gravity flow as well as run its zone pump (simply remove the flow check).
The 007 is a good little circulator, but is there something better and more efficient for 100% duty cycle?
Thanks.
- CoalisCoolxWarm
- Member
- Posts: 2323
- Joined: Wed. Jan. 19, 2011 11:41 am
- Location: Western PA
- Stoker Coal Boiler: Keystoker KA-6
- Hand Fed Coal Furnace: old Sears rebuilt, bituminous- offline as of winter 2014
- Coal Size/Type: Anthracite Buckwheat
- Other Heating: Oil Boiler
Actually I have to make a correction to add about 12ft of 1.5" cast iron, then reduced into the rest is 1.25" copper.
I had forgotten I doubled the length of the copper primary to add the extra zones.
This is Keystoker KA6.
According to this excerpt from PexSupply/com, 8.2-16.3gpm is the recommended range for the piping.
Not sure what the Keystoker wants ideally. I have forgotten a whole lot of stuff, so if I'm asking repeated questions, just raise a cup of coffee, have a chuckle about it, and be gentle. LOL
- dbsuz05
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- Location: Central Pennsylvania
- Stoker Coal Boiler: Axeman Anderson
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I have a Wilo 3 speed pump. Ran for 8 years 24-7 about 8 months out of the year. I’d say It’s good. Very quiet on the 65 watt setting. It had no problem circulating water from garage underground to the house through primary/secondary system with huge rads. It’s surprising how much just 65 watts will do. Even though you can run it on speed 3 with 110 watts.
- CoalisCoolxWarm
- Member
- Posts: 2323
- Joined: Wed. Jan. 19, 2011 11:41 am
- Location: Western PA
- Stoker Coal Boiler: Keystoker KA-6
- Hand Fed Coal Furnace: old Sears rebuilt, bituminous- offline as of winter 2014
- Coal Size/Type: Anthracite Buckwheat
- Other Heating: Oil Boiler
Thanks.
I have a situation where the pump is running continuously right now, though it isn't firing the stoker from a call for heat. Not sure if it used to do that before? Maybe, maybe not.
But now I'm wondering if it will hold up. If so, great. If not, when I get a replacement on hand, which one to get.
I have a situation where the pump is running continuously right now, though it isn't firing the stoker from a call for heat. Not sure if it used to do that before? Maybe, maybe not.
But now I'm wondering if it will hold up. If so, great. If not, when I get a replacement on hand, which one to get.
- CoalisCoolxWarm
- Member
- Posts: 2323
- Joined: Wed. Jan. 19, 2011 11:41 am
- Location: Western PA
- Stoker Coal Boiler: Keystoker KA-6
- Hand Fed Coal Furnace: old Sears rebuilt, bituminous- offline as of winter 2014
- Coal Size/Type: Anthracite Buckwheat
- Other Heating: Oil Boiler
-
- Member
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- Joined: Tue. Sep. 11, 2012 8:32 pm
- Location: Stillwater, PA
- Stoker Coal Boiler: 1980 EFM DF520
- Hot Air Coal Stoker Furnace: Alaska Stoker II
- Coal Size/Type: Rice
- Other Heating: Heat pump / Propane
I'm right there with you Rob. I went with Alphas as well after comparing too many pumps. They were the strongest, most efficient pumps. Definitely beat out Taco in that area. I put an extra on the shelf for that middle of the night pump died insurance plan.
- CoalisCoolxWarm
- Member
- Posts: 2323
- Joined: Wed. Jan. 19, 2011 11:41 am
- Location: Western PA
- Stoker Coal Boiler: Keystoker KA-6
- Hand Fed Coal Furnace: old Sears rebuilt, bituminous- offline as of winter 2014
- Coal Size/Type: Anthracite Buckwheat
- Other Heating: Oil Boiler
Which Alpha do you have?
Which model is a good replacement for the Taco 007 in my size primary loop?
https://product-selection.grundfos.com/products/a ... tab=models
https://product-selection.grundfos.com/products/a ... tab=models
Which model is a good replacement for the Taco 007 in my size primary loop?
https://product-selection.grundfos.com/products/a ... tab=models
https://product-selection.grundfos.com/products/a ... tab=models
-
- Member
- Posts: 106
- Joined: Tue. Sep. 11, 2012 8:32 pm
- Location: Stillwater, PA
- Stoker Coal Boiler: 1980 EFM DF520
- Hot Air Coal Stoker Furnace: Alaska Stoker II
- Coal Size/Type: Rice
- Other Heating: Heat pump / Propane
I went with Alpha 1s because I was focused on gpm, head, and watts. The Alpha 2s have more fancy features but for an extra $30 per pump and to not use the extras was a waste to me. I just wanted the pump to basically take my target gpm based on head and adjust automatically which is exactly what the alpha 1 series does.CoalisCoolxWarm wrote: ↑Thu. Dec. 16, 2021 11:31 pmWhich Alpha do you have?
Which model is a good replacement for the Taco 007 in my size primary loop?
https://product-selection.grundfos.com/products/a ... tab=models
https://product-selection.grundfos.com/products/a ... tab=models
I bought these specific ones and it will replace your Taco 007 easily:
https://www.supplyhouse.com/Grundfos-99287256-ALP ... rminal-Box
Brochure for it:
https://www.pexuniverse.com/uploads/docs/pdf/alph ... ochure.pdf