Print

[johnybcold]

I have mentionedy temps before and got lots of good feedback, so today I measured my run I could not find any info on how to select a pump, I have a Taco 007 my run is 112' with (3) 90 angles and (1) 45 on both the return and the feed so the total is (6) 90 and (2) 45, 14 feet of that is in the house which is plain 1" pex with neoprene pipe insulation, the run outside is the 1" CB insulated pex, I am going to try and buy a meter today to confirm my temps but my outdoor boiler is at 188, my indoor unit is at 170 and the return outside is at 155-160, there is a section of CB pipe that is only 1' deep for about 4' now that I have a backhoe I am gonna dig it up this summer and put it deeper I could probably get rid of a 90 that way to.

[Scott7m]

What is the purpose of going deeper?  Chances are that will only decrease your efficiency.

I can't beleive how many folks are running 007's

We're you using hot water and pulling heat when you tested temp drops?

[Bondo]

I can't beleive how many folks are running 007's

Ayuh,...   Really,...   I went with Grundfos 3 speed units, All through-out my systems...

[RSI]

What is the purpose of going deeper?  Chances are that will only decrease your efficiency.

I can't beleive how many folks are running 007's

We're you using hot water and pulling heat when you tested temp drops?

It depends on the conditions. Around here most places the ground is dry as deep as you want to dig. By going down to where the ground is 50 degrees instead of 10 degrees it will cut the temperature differential down 40 degrees. With a lower differential there will be less heat loss (assuming same soil and moisture)
Also, if you are in the frost and it is shifting around, I can't imaging that being good for frozen plastic.

[RSI]

Is the 112' each way or round trip?

I would change to a Grundfos 15-58. It will use about the same amount of power but move more water. The standard model has the flanges rotated 90 degrees from the Taco 007. If that won't work the way your pump is currently mounted you would want to get the rotated flange model. 

[MattyNH]

What is the purpose of going deeper?  Chances are that will only decrease your efficiency.

I can't beleive how many folks are running 007's

We're you using hot water and pulling heat when you tested temp drops?

running a 007 here as well

[Scott7m]

Yea going deeper as long as your soil allows that, in my area that isn't a possibility at all.  You get into pure muck down around 3ft most of the time, but areas are different

[Trint]

Switched from a 007 to a OOR 3speed to get more flow on my system.  A OOR is the same as the 007 on low and close to an 009 or so I high I think.

[Scott7m]

009 is another strange one we see, it's a low flow but high head pressure pump....

The 011 is a pump I feel is a good choice in a lot of situations

[MattyNH]

 It seems to me that everyone that I know personally runs either a 007, 009, 011

[RSI]

Switched from a 007 to a OOR 3speed to get more flow on my system.  A OOR is the same as the 007 on low and close to an 009 or so I high I think.

I forgot about that pump. It has almost the exact same flow rate as a Grundfos 15-58.
It will do more GPM than an 009 unless you have a fairly restrictive system. Then an 009 will move more.

[Ohiowood]

What is the difference ? 009 007 ??     I run a 009. Just because that what was installed.

[RSI]

A 009 is a very high head pressure low GPM pump and a 007 is a real low head pressure higher GPM pump.

Unless you have real short lines or go bigger than 1" the 007 won't move enough water to work properly.
The 009 can handle a lot more pipe and plate, etc so it doesn't make as much difference adding more restriction to line but it can only barely do enough for most houses.

[Scott7m]

Most dealers n customers to just assume 007 is ok, 009 a little better, 011 a little better

[Ohiowood]

Only have about  a 30 ft run to house with pex with  two 90s till it gets to the DHW and heat exchanger, and then the normal I  quess set up.