home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!decwrl!morrow.stanford.edu!morrow.stanford.edu!not-for-mail
- From: GA.MCL@forsythe.stanford.edu (Mark C. Lawrence)
- Newsgroups: misc.consumers.house
- Subject: Re: How to cut back my heat bill?
- Date: 23 Nov 1992 18:04:12 -0800
- Organization: Stanford University
- Lines: 27
- Sender: news@morrow.stanford.edu
- Distribution: usa
- Message-ID: <1es2isINNn0t@morrow.stanford.edu>
- NNTP-Posting-Host: morrow.stanford.edu
-
- In article <92328.110753F0O@psuvm.psu.edu>,
- <F0O@psuvm.psu.edu> writes:
- > On another note, I have an anticipator in my thermostat. I had heard
- >from someone else that the correct range for it was .7, which is what mine
- >was set at when I moved in. But the gas guy checked the current going
- >through the furnace, and said the anticipator should be set to .4. After
- >he left, the furnace was coming on more often then when it was set at .7.
- > It would stay on for less periods of time, but come on more often. I
- >didn't think the additional start-ups were good, so I set it back to .7.
- > My question is, what does the anticipator actually do, and is there
- >an optimum setting? And if there is, does this setting save you on your
- >heat bill, compared to non-optimum settings?
-
- It anticipates heat from your furnace. It's just a little resistor, and is
- heated by the current flowing thru it, which is the current drawn by the
- control valve/relay/etc. in your furnace. The heat warms your thermostat in
- anticipation of the heat from the furnace. The numbers are the current in
- amperes. For a lower current, you use a higher resistance to get the same
- heat, so a lower number means "more heat anticipation" which means "shut the
- furnace off sooner". The reason for having this is that your furnace will
- continue to produce some heat after it is shut off, so if you run it until
- your thermostat is warm enough your house will be too hot.
-
- I don't think it will have much effect on your heat bill. Very frequent short
- cycles may reduce the life of the furnace, but otherwise it isn't critical.
- If the furnace runs a long time and causes unpleasant temperature swings,
- adjust the anticipator for shorter cycles. Otherwise don't worry about it.
-