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- Path: sparky!uunet!dtix!darwin.sura.net!mlb.semi.harris.com!rastaban.rtp.semi.harris.com!peters
- From: peters@rastaban.rtp.semi.harris.com (Steve Peters x678)
- Newsgroups: misc.consumers.house
- Subject: Re: Air valves for steam radiators
- Message-ID: <1992Dec21.132335.24514@mlb.semi.harris.com>
- Date: 21 Dec 92 13:23:35 GMT
- References: <1992Dec18.134149.25175@ryn.mro4.dec.com> <1992Dec20.174708.29852@sci.ccny.cuny.edu>
- Sender: news@mlb.semi.harris.com
- Distribution: usa
- Organization: Harris Semiconductor, Research Triangle Park, NC
- Lines: 51
- Nntp-Posting-Host: rastaban.rtp.semi.harris.com
-
- In article <1992Dec20.174708.29852@sci.ccny.cuny.edu> sukenick@sci.ccny.cuny.edu (SYG) writes:
- >>>something is wrong with your system. The hissing sound is normal.
- >
- >If it is a lot of hissing, or if steam is coming out, something
- >is wrong.
- >
- >It could be:
- >1) incorrect anticipation setting for thermostat
- >2) thermostat problem (anticipator broken, too much hysterisis in
- > thermostat
- >3) incorrect valve rating for radiator
- >4) defective valve
- >
- >If most of the radiators are hissing a lot, I'll bet it's
- >1) or 2). If it's just a couple of radiators, try
- >a valve with a smaller rating (i.e. if it's rated "C", try
- >"B") In general, radiators require from "A" (closest to
- >heating system) to "D" furthest from system. The variable
- >valves are useful, but the range is not great as they indicate (IMHO).
- >(These things can also be rated with numbers, but II don't know that
- >system)
- >
- >>deposits. Unscrew the valve and soak it in a bowl of warm
- >>vinegar for half an hour. This is a 10 cent solution to your problem.
- >
- >A new valve is from $5 to $15 (or more).
- >
-
- I believe my problems are valve related, as my valves are REALLY old,
- and I just installed a fancy new programmable thermostat. I'm in the
- process of tracking down new valves. They're really hard to find here
- in N.C. A couple of valve related questions: How do these things
- physically work? If adjustable ones are used, is there a procedure
- for adjusting them? How should the valves behave? I know they're
- supposed to cut off at some point.. are they heat sensative or
- moisture sensitive?
-
-
- >>maintenance man suggested purging the [boiler] valve once every two weeks.
- >>It's best to develop a habit of doing this.
- >
- >When the boiler is relatively cool, l'll open the valve
- >and replace water until it runs clear, about once every 3 months
- >in the heating season. Just always make sure that you've added
- >enough water when finished; check again when hot!
- >
-
- I agree with the guy who suggested doing this when the boiler is
- burning, so you can make sure the low water cutoff works. Mine
- didn't when I bought the house, but after several times of draining
- concentrated rust water, it now works reliably.
-