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- Newsgroups: misc.consumers.house
- Path: sparky!uunet!think.com!paperboy.osf.org!paperboy!macrakis
- From: macrakis@osf.org (Stavros Macrakis)
- Subject: Thermostat fun (freezing pipes)
- Message-ID: <MACRAKIS.92Nov20150714@lakatos.osf.org>
- Sender: news@osf.org (USENET News System)
- Organization: OSF Research Institute
- References: <92325.085334F0O@psuvm.psu.edu> <1992Nov20.154358.26582@sei.cmu.edu>
- <1992Nov20.175535.1694@osf.org>
- <1992Nov20.183754.25322@porthos.cc.bellcore.com>
- Distribution: na
- Date: 20 Nov 92 15:07:14
- Lines: 21
-
- Setting back thermostats is an excellent idea because it saves energy
- (and therefore dollars). With hot water systems, there is one case to
- be careful of, however. I know this from personal experience.
-
- In some houses, heat pipes run through unheated areas such as crawl
- spaces or outside walls. In normal operation, they can't freeze since
- the water gets heated every so often as the circulator kicks in (when
- the temperature goes down by 0.5 F or so). However, when the
- thermostat setting is reduced, it may take a lot longer before the
- circulator runs -- if you reduce the setting from, say, 68 F to 55 F,
- perhaps 25 times longer. On a very cold day, this may be enough to
- let the pipe freeze and possibly burst.
-
- The lesson is: if you have a hot water heat system with uninsulated
- pipes running in unheated areas, on very cold days (especially if
- there's wind), DO NOT set back the thermostat. Insulating the pipes
- will help avoid this problem, as well as reducing energy loss, but
- such pipes aren't always easily accessible.
-
- -s
-
-