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[rhugg]

What is the best practice to get air out of line in the attic?  I suspect i need to fillthe line with water starting at the high point?  Maybe and air purge valve also?

[mikenc]

you can fill from low point as long as pressure is enough to push air to high point. You will need vent at high point. most any home has enough pressure to push air out. City water or well pump. Vent can be as simple as tee with valve to discharge air.

[rhugg]

Interesting, you'd hook up the house water (garden hose) to the out side of the circulator pump and fill it?  Guess I'd add a T and valve with a hose coonection?  The Taco 00R has a check valve but I don't think it can lift as high as I need without the return line being full and pulling.

Once I get the air out, I'll have an air purge at the high point, will the return line stay full when the pump shuts off?

Thanks

[willieG]

i have a hose bib in my line at the furnace well before the pump and also a valve at the furnace. i close off the valve and make sure my pump is off. this way no water can go backwards into the stove. i open the hose bib vlave and force water through the supply line under the homes pressure, i let it run and come back into the stove through teh return line. i jsut let it overfow the stove and when i am quite sure there are no more bubbles coming out i open the valve for the stoves suction line and turn on the pump and then shut the hose bib off

[Scott7m]

get you an isolator valve flange with the water faucet connection on it and put it below your pump, back fil the system and it will shove the water right out as it goes, not had this fail yet. 

[rhugg]

That looks like the ticket.  Pexuniverse shows a Webstone Isolator Flange Valve pair w/ drain for $44.  It looks like an 'elegant' solution.  I'll look when I get home, I may need to drain the OWB to install them.



http://www.pexuniverse.com/store/product/webstone-40414-isolator-flange-valves


Thanks.

[rhugg]

I looked at my setup.  I have a hose bib on the return line from the attic and there is a valve between the hose bib and the OWB.  So I will crack the flange at the circulator and feed water up the return line thru the HE and down the supply line to the circulator.  Once there is no air coming thru the flange I will tighten up the flange.  At this point I may have a slight amount of air in the circulator itself but once I open the valve to let water to the circulator and run it it should be OK?  I will have a vent at the high point.

[Scott7m]

That looks like the ticket.  Pexuniverse shows a Webstone Isolator Flange Valve pair w/ drain for $44.  It looks like an 'elegant' solution.  I'll look when I get home, I may need to drain the OWB to install them.



http://www.pexuniverse.com/store/product/webstone-40414-isolator-flange-valves


Thanks.

That is the exact flange that I use.  You can get them cheaper than that though, I pay around 29 for them

[donahuej]

maid-o-mist