Taco 007 vs B&G 100

bigugh_4

and Mike B. said it
"Hydronics is like measuring with a micrometer, marking with a scribe, and cutting with and axe." Take the time to find a nice back saw for cutting. a perfectly matched pump to conditions will affect the life and mind of a good hot water heating system!

Rob T

I've decided to

replace my current pump which is a B&G 100. Motor bearings are getting noisy and the pump is putting out some funky vibrations.

Would a Taco 007 be a good swap? Or should I stay with a new 100? I have redone the system to pump away and the B&G is just too noisy in this setup.

This is on my 4 zone system, controlled by Honeywell valves.

2 story old farm house, current pump looks to be original to system (40+ yrs old) but has been rebuilt at least once. (Has a Teel bearing assembly instead of B&G)

LMK if there is any other info you guys need.

Thanks

Rob

Unknown

How long is your longest zone?

What is the BTUH load of all of the zones?

Noel

bob eck_2

check into using a grundfos super brute 3 speed circulator model ups15-58fc. this comes with three speeds and a built in check valve. you can remove the check valve if not needed. the grundfos super brute will have a higher head feet than a taco 007. three year warranty on super brute.
grundfos also has higher head feet and gpm pumps if needed.
check out grungfos circulators.

Steamhead

and

what type of radiation do you have? Cast-iron? Baseboard? How is it piped- 2-pipe? Series-loop?

All this will help you determine what to replace that old B&G with.

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tom mahon_4

Zone pump

with up to three zone valves --007, the way to go.....

hr

That B&G

is a pretty low head pump. If it has done the job up to this point, size the replacement as close to it as you can. If in you don't want to do the calcs

The Grundfos Super Brute 15-58 3 speed will work all around the curve of the B&G. Additional speeds give you ability to dial in the system to the delta t you desire.

3 year warranty, to boot.

Then again, you could buy a new series 100. If installed and maintained properly they run like the energizer bunny!

hot rod

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R Troughton

Hey thanks,

for all the replies.

OK, the longest loop is approximately 105' with 30' of fin tube. This is the loop that encompasses the 2nd floor so has about 12' of vertical piping.

I am not sure how to calculate the total BTUH of the system, if you can guide me I'll be happy to run the calcs though. I used Slant/Fin's heat loss program and came up with a total loss of 48,000 btu for the house.

It looks like I have about 90' of actual fin downstairs in about 135' of baseboard. So I am looking at about 120' of actual fin tube currently in the house. (I recently removed about 30' total, 24' in an upstairs bedroom and 6' in an open entry.) From what I have read it looks like I am over radiated.?.

I have all fin tube baseboard, 3/4" copper. American Standard 170,000 btu atmospheric boiler in the basenment.

Now for an interesting twist, I recently installed an inline thermometer in one of the loops and I have a 4-5 degree Delta-T??? My boiler cycles at 180f and the return on this loop (About 85' long LR loop with 38' of fin) is 178f, so what gives??? The room heats fine with the outside temps in the high 20's.

I have posted more info elsewhere in the thread.

Thanks

Rob

R Troughton

It is

all copper baseboard fin tube, overall dimensions given below. It is in 4 zones all series loops.

Thanks

Rob

R Troughton

Hi hot rod,

thanks for the reply. I have read on this board that the Taco and Grundfos pumps inherently run quieter than the B&G pumps.

Ever since I re-piped to pump away I have had more noise to put up than before. I am hoping that by going to either a Taco or Grundfos it will help.

Thanks again,

Rob

Floyd_5

If you calc. is anywhere close....

You could save a ton of money with a smaller boiler....if you are burning gas, which I would assume with the Am. Std., you would be a perfect canidate for the Munchie or Ultra, espec. with an over radiated house.... could run at some pretty low water temps. espec. in mild weather.

Just a thought......:-)

R Troughton

Hi Floyd,

I agree totally. Unfortunately I am not able to swing for a new system at this time. I am planning on having a new boiler installed (Note the "installed" part. If there is one thing this little project has taught me is to have a lot more respect for you "wetheads". )

I am hoping to get a least one more heating season out of the old beast and two would be ideal. The boiler itself is in great shape and seems to be working fine.

Last years total gas bill was $1100.00 which included a clothes dryer.

As to the heat loss, I ran it several times and fudged some of the factors to make sure I was covered. (I ran it w/o any insulation of which there is some and with all single pane windows, of which I have about 50% thermopanes.)

Thanks again for all the help!

Rob

John White

Taco 007

I would highly recommend the 007 in almost any situation like this. The ultimate difference may be in Temp. drop through the loop, which would unlikely be noticed. The 007 was designed origionally with a flat curve, which prevents noise problems associated with high heads reached with the multi speed type circs. The "multi-speed pump covers the gammit" argument is a nice sales idea, but.....
Stick with a winner...can't go wrong with the 007.

John White

also......

I forgot to mention, Taco was the origional developer of, and still has, the circulator with integral flow check. It's a great feature for a zoning application, in the areas of functionally and cost.

Dan M

noise

Seems like a trade off for pumping away is added pump noise ? Is it true that pumping into the boiler muffles the vibration and noise or somthing like that? ( read it on this sight). My system pumps away ( like it should) but does have more "sound" Than when it pumped into the boiler.

Rob T

Thanks for

the reply John. I am still wondering if the Taco 007 will be enough or to much pump? I doubt that I will have any problem with a temp drop, check out the above post. From what I can see, right now I have a 4-5f Delta-T..??

From what I can find out the price difference between the Grundfos and Taco is negligable so it all comes down to performance and noise.

Thanks again

Rob

Rob T

It looks

and sounds to me as if this is true Dan.

Once I get a new pump I am going to do some insulating of the downstairs piping and make sure that all the hangers are tight to see if that helps with the added noise.

It isn't an annoyance but I can definitly hear the system more now than before.

Rob

Mark J Strawcutter

you _can_ go wrong

if the 007's curve is not appropriate for the application. That's why Taco makes so many different models.

Mark

PS - around here, the 007 is the "universal" circ. Used in every application. May have something to do with the face that it's about the only circ the local supply house stocks :-(

Wethead7

Tight hangers

Be careful when you tighten up those hangers. Over doing it may make added noise. Clicking and other movement sounds. My boss is one to overtighten.{Can't teach him any new tricks}

Any way for Iraq have a good try at it.

Rob T

Thanks for the

info. While we are on the subject is there a particular type or configuration of hanger that is preferred?

The ones I am using on the 3/4 lines are a single strap with a clamp setup for around the pipe, much like an exhaust system hanger.

The larger pipes all have stirrup style hangers with threaded rods.

Thanks

Rob