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From: hrs@houxb.UUCP (H.SILBIGER)
Newsgroups: net.misc,net.physics
Subject: Re: Why don"t thermostats work?
Message-ID: <257@houxb.UUCP>
Date: Fri, 17-Feb-84 09:03:57 EST
Article-I.D.: houxb.257
Posted: Fri Feb 17 09:03:57 1984
Date-Received: Sat, 18-Feb-84 01:45:11 EST
References: <877@ihuxl.UUCP>, <194@heurikon.UUCP>, <164@cubsvax.UUCP> heurikon.199
Lines: 19

The new Sears solid state programmable thermostat indeed looks at
the rate of change in the room temperature to help maintain a
setpoint. It therefore is capable of holding the house temperature
quite steady.
This could potentially cause problems on the air-conditioning
mode, since the compressor of a house airconditioner should not
cycle too often (most of them have a built in delay relay).
In the airconditioning mode the thermostat has a programmed in delay
of 4 min.
It is also possible to get osciillation in the heating mode.
If this happens the user can program in a delay there as well.
The time program allows for four temperature changes per day,
on a 2 and 5 day series basis (weekday and weekend).
There is also an override for the current time period and for
all time periods.
A nice package, especially when on sale in the mail order flyer
at $ 70.0
Herman Silbiger
AT&T-IS Lincroft