Bleeding secondary loops

Post by **Rob R.** » Thu. Dec. 16, 2021 5:04 am

No, but it creates challenges in removing the air. When you mix down to a low temperature most of the water in that loop stays in that loop, only a small portion goes through the boiler. Try adjusting the mixing valve to a high temperature and running it for a few days. This will result in a more direct path for the water to go through the boiler and air scoop.

McGiever · Post by **McGiever** » Thu. Dec. 16, 2021 10:25 am

Note to self…when piping for a low temperature loop using a mixing valve remember to add a quick purge stop valve and boiler drain to rapid purge/flush just ahead of the mixing valve for immediate air removal at time of first fill of system . Also allow for a garden hose connection for house pressure to be temporary introduced at time of system fill and air purge.

YouTube has many videos of different air purge configurations.

FirstcoalstokerRon · Post by **FirstcoalstokerRon** » Tue. Jan. 18, 2022 7:34 pm

nepacoal wrote: ↑
Wed. Dec. 15, 2021 6:15 pm
If you're not sure how to purge, check out this YouTube video at the 16 minute mark. This plumber shows how to purge in every other video he puts out

Great video thanks a lot. I got a lot of banging going on in my 1 zone, I think the video will be a big help. as will any info you all give me. THANKS AGAIN!!