HWH riser vents

Unknown

automatic air vents available, I use these <A HREF="http://customer.honeywell.com/honeywell/ProductInfo.aspx/EA122A1002"> H/B vents </A> , and a Q122A1001 "safe waste connector" can be added to pipe-it to a safer drainage point. But <b>remember</b> , adding any auto-vent to an area where positive pressure is <i>not maintained</i> WILL allow them to "suck" more air into the system also. <BR><BR>Dave

D. R. Riddle

automatic vent that would not damage apartment

We're encountering trapped air in the top floor circuits of hot water heating systems. In a couple of cases the owner vents the air manually to get a couple of days worth circulation. I wanted to install a regular small vent such as we use to vent the boiler itself but I'm concerned about water damage to the room. What is a good quality vent that is suitable for this application ? Although other factors are causing the problem I feel like a vent on the top is a good extra.

D. R. Riddle

Venting at top of risers.

I believe you've answered my question as to why top riser vents are'nt used. The risers of subject top out a good 50 feet over the boiler. The hwh circulator does not operate constantly.
Thanks

Brad White

Treating the Symptom

Not the disease, I suspect.

As Dave noted, any vent without pressure can breathe both ways. You did note "other causes", so let's make sure that you are:

1) Pumping away from your expansion tank.

2) Have adequate pressure in your system (about 4 psig at the top plus another 0.433 lbs. for every foot of height.

3) A good air separator is an option at the boiler and upstream of the circulator. Once you get the air out this should not be necessary.

Do at least #1 and #2 above and you should not have to add vents or at least use them more than twice.

My $0.02

Brad

Steamhead (in transit)

And

the system should be set up to "pump away" from the air separator/tank connection.

Then kiss your air problems goodbye.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"