Operation Manual

12
next program period, beginning at 6:00 AM,
you have programmed a temperature of
70°F. The thermostat will automatically ac-
tivate the heating system at about 5:00 AM,
so that the programmed 70°F temperature
is reached by about 6:00 AM.
• AUTOMATIC CHANGEOVER — You can
set the thermostat to automatically switch
the system from heating to cooling as needed.
First, you must move option switch #4 (lo-
cated on the back of the thermostat body) to
the ON position, if it has not already been
done. To do this, turn OFF 24VAC power to
the thermostat. Then remove the thermostat
body from the wall. Check the position of
switch #4 (the last switch on the right). If it
is ON, simply put the thermostat back on the
wall and restore 24VAC power. If the switch
OPERATING FEATURES
Now that you are familiar with the thermostat
display and buttons, read the following informa-
tion to learn about the many features of the
thermostat.
• COMPUTED ENERGY MANAGEMENT
RECOVERY (EMR) — The thermostat’s
microcomputer will be set to automatically
calculate the time it will take to change the
temperature to the next program setting.
Then the thermostat will activate the heat-
ing or cooling system to change the tem-
perature so that the desired temperature is
reached at the beginning of the next pro-
gram period. As an example of this feature,
assume that you have programmed your
thermostat to provide an overnight heating
temperature of 62°F, and that during the