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Radiator Steam Vent Sizing Assistance Needed
I replaced what appeared to be 2 faulty vents in the 2 small radiators in my living room of my apartment. I live on the 3rd floor of a 5-story walk-up and the boiler is in the basement. The radiators are single-pipe units and are both very small. There is one located under each window, for a total of 2, and they are connected to the same pipe. The radiators are probably only 24" x 18" each.
The old vents were whistling like CRAZY and releasing hot steam almost the entire time the boiler was running. It was literally like a boiling tea kettle going off in my living room all the time and they weren't retaining heat like they should! This is my first winter in this apartment so I did a lot of googling about radiators today to try and determine what the problem might be which led me to try a vent replacement (and how I found this forum). This appears to have worked! (read on)
My old vents were both the maid-o-mist/jacobus style and were size "C" (fairly large vent holes according to their website http://www.maid-o-mist.com/jacobus.html), so I replaced them with the same.
Now, things are SIGNIFICANTLY improved with the new vents, but I still get a little noise for a few minutes when the boiler first kicks on (at much less annoying volumes). The 2nd radiator in the chain now whistles softly for several minutes longer than the first one however. It also gets hot a slower pace since the steam reaches the other radiator first.
Which brings me to my question. Should I be using different vent sizes than I'm currently using for:
A.) Both radiators
B.) Radiator #1 in the chain
C:) Radiator #2 in the chain?
I'm really not sure how to properly size these, and I'd ideally like radiator #1 and #2 to get warm and stop whistling at about the same time. I don't mind spending another few bucks for a different size if it will get me better results. Note that I rent this apartment and have no control/access to the main vents closer to the boiler.
I really appreciate any assistance anyone can provide. Thanks in advance!!