View Full Version : Installed a spriovent today- video
10-04-2008, 06:27 PM
My brother has a boiler which has always had issues with air migrating up to the 2nd floor bathroom so today I finally got around to installing a spriovent on his system. This is the first one I've installed and gotta say, it works pretty awesome. It didnt remove all the air when filling from empty (prob cuz it has some odd piping) but once I got the water flowing it released a nice huge pocket of steam. Check out the video
Hard to see at first but when the light from the flashlight gets it at the right angle you can see a nice steady stream of steam blowing out.
Once the flow was established in the pipes the spirovent sucked all the air out of the system and its dead silent now like it should be.
I have installed a couple of those things, they are fantastic.
I installed one on an existing system and it solved all the air problems.
So I installed one on an upgrade system (two Weil McLean ultras) and have had NO air after it ran a couple of days.....
10-05-2008, 09:33 AM
Yea they are great. It probably would have taken out all the air as I filled if i did one zone at a time, but I opened them all up so a bunch of air was trapped in the 2nd floor zones. Once I opened the drains up on those lines to release the huge pockets of air and get the water moving everything else came out within a few minutes.
I have heard an airscoop when properly installed (18" from the bend) should work just as well, however I really wanted to test out the spirovent. Plus you dont have to deal with changing out those auto airvents every few years when they drip.
10-05-2008, 10:58 PM
Spirovents (and the competing brands) are awesome In an effort to prove to myself just how awesome they are, I started up a brand new radiant heat job (3000 feet onix staple up) by turning on the water supply and the boiler and letting it run for the night. by the next day it was completely silent. I didn't purge the radiant loops at all. The only place the air was allowed to escape was the spirovent.
In this experiment the Spirovent was located in the ideal location: on the outlet of the boiler with the pump pumping away from the spirovent and expansion tank. If the spirovent was not in this location, the experiment may not have turned out this good.
10-06-2008, 12:33 AM
I've had the same results. I will purge the loops to make sure there's circulation and then let the spirovent take it from there. Usually overnight is all it takes. We now use them on every boiler replacement, even with the extra cost over an air scoop, they pay for themselves in less time spent bleeding air out.
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