Chuckles,

(I tried to post a follow-up to your response on Google.com but I kept
getting "Internal Error" messages so I decided to contact you
directly).

I know what "morning", "day", "evening" and "night" mean.

But what is a "setpoint"? Is it the temperature at which the A/C (or
heater) is to TURN ON or is it the temperature the A/C (or heater) is
to MAINTAIN?


thanks,

Gary


Chuckles wrote in message ...
(Gary) wrote in
om:

In plain English, what do the terms "start time", "morning time
period", "cool setpoint", "heat setpoint", "day time period", "evening
time period" and "night time period" mean?


It seems like fairly plain English to me.

The day is divided into four time periods, the names are arbitrary but
they indicate that the sequence is as you have listed (i.e. morning
precedes day which is followed by evening etc.) You get to choose the
start time of each period.

For each period you can set a temperature to be achieved by the
thermostat using the furnace, and another temperature to be achieved by
the thermostat using the AC. The two can't be the same, the first should
be different (lower) than the second or you've got a problem. Most
thermostats won't allow you to set the two the same.

Typically you will set a comfortable temperature for morning and evening,
while saving money during the day and night periods by setting the
heating setpoint low and/or the cooling setpoint high.