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[DaveWertz]

Thanks Matty for the reference for Alt heat supply. Saved me $40. Came to 204 shipped to my door. I called local dealers and they all wanted 290!! F that. I hope this helps. Now that I sit and think about it, the pumps are suppose to be on the back of the stove where as mine are in the basement and have to draw 55ft one way. Those wilo crappers arent meant to draw like that then push the water threw the lines. Just dont have enough umph.. My dealer thinks that is the issue also. Makes sense.

[willieG]

my taco 11 is in the basement...250 feet form the owb and pushes and pulls everything i need

[MattyNH]

Thanks Matty for the reference for Alt heat supply. Saved me $40. Came to 204 shipped to my door. I called local dealers and they all wanted 290!! F that. I hope this helps. Now that I sit and think about it, the pumps are suppose to be on the back of the stove where as mine are in the basement and have to draw 55ft one way. Those wilo crappers arent meant to draw like that then push the water threw the lines. Just dont have enough umph.. My dealer thinks that is the issue also. Makes sense.

No problem Dave..Hope it solves the problem..I think it will..Like is said on other posts…My buddy a few yrs back  He would have his house set and like 74 and it would only be 68 (running a 007 pump)..He bought that 011 pump..It solved the problem.. temps are right on..I found that alt heat supply has the best prices for taco pumps..You'll get a full catalog on what they sell with that pump….Keep us informed..

[DaveWertz]

Wow willie thats a long run. I never heard anything good about the Wilo pumps. Its been used and abused thats for sure. I put it threw more than I should have this summer after pipe install and running LOTS of air threw that pump. The 0011 seem real good for the money. I havent seen one bad review on them. And most of the reviews people seem to be having the same issue running smaller pumps with similar setup. After switching to a bigger pump there problems were solved.

[DaveWertz]

Well got the taco 0011 installed. A bit of a pain. The flanges needed to be turned so I could put the pump horizontal. They were a pita trying to twist them. I had to bleed the lines a bit but now just waiting to see if it will get to 74 in the house. I might try to open the flow control valve up a little bit and see if that helps. Its not really cold today so a cold day will tell if it really works.

[DaveWertz]

Well it got down to about 19 lastnight. All was fine but this morning i woke up and it sounds like air keeps running threw the pump. The house was about 1 to 2 degrees off. I cant seem to get the air out of the pump. All pipes are hot. I blead the baseboards. Now its 70 and wont go higher. Before with the smaller pump it struggled to hit 72. Im bout to give up on this thing....

[DaveWertz]

Is this something that will work itself out? Its quite as can be now but then it will start to make some noise like air is being pushed threw it?

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[DaveWertz]

And here is a vid of when it starts to get noisy. It comes and it goes

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[idahohay]

Dave, I have been following this thread hoping to learn something but am still unclear as to how your system actually works.

Do you have a pump at your wood boiler?  (According to Hardy's manual an H4 comes with a Taco 009 Stainless)

Does the water from your Hardy loop through a heat exchanger?  If so, are you backing up an existing pressurized system?  Air elimination might be harder on the pressurized side.

A photo of your piping (not a close up) showing where your boiler water enters and gets distributed via your pumps would help the pros diagnose your problem. 

Sorry if I missed something in a previous post.

[DaveWertz]

No my pumps are in the basement. Each pump has a 50ft run from the stove to the pump. There are no heat exchangers, just hot water baseboard.

[idahohay]

Dave, sounds like you have improved the situation with a larger pump.  I'm thinking since your boiler water is what goes through the whole system the air should eventually leave but maybe someone more knowledgeable will advise. Hopefully that is the culprit and has been cured by now.

Since you apparently have plenty of pump to circulate the water,  is the water hot enough? 

The Hardy's look like nice units, your H4 should easily provide enough heat to drive you out!

[DaveWertz]

Yeah the stove should def help. Its 180k btu. Im hoping the little bit of air that is in there will purge itself out

[Homerglide]

Hello to All:

I see that the Grundfos 26-99 variable speed set at medium is equal to the Taco 11. That gives a person the flexibility of going a little higher or lower.

About having air locks: I learned through experience that just venting the highest point in the system is not adequate. At every vertical pipe creates an individual area of concern. To finally resolve my issue with air in a closed system, I now have 7 air vents and one air-eliminator above the boiler output.

We are not quite to our season low but have had single digit temps more than once in the overnight hours. Average house temp is 72 while the shops average is 66. This has been the same since September of this year. Once ya get her tuned in you will love it.

[DaveWertz]

If I ever get it tuned in lol. Im to the point im about to have my oil boiler switched over to natural gas and be done with it. Between the new insulated lines and pumps ect. This is costing me a fortune. I just went and blead ever valve on my registers. It still sounds like air gets threw the pump, but only maybe once an hr. The pump has been running all day. You got me??? I give up at this point. Calling a pro to take a look at it. More $$$$$$ I gotta shell out.

[yoderheating]

 You need to force the air out of the lines using your domestic water pressure. That will involve putting in a cross over line and some valves but i refuse to do any radiant jobs without doing it.