utes, to allow the thermostat to reset itself. Replace the battery, reprogram the thermo- stat, if necessary, put the thermostat back on the wall, and restore 24v AC power. To set the thermostat for automatic changeover
after programming, press | SYSTEM | to set the |
thermostat to AUTO (the setpoint tempera- ture display is blank in the AUTO mode). The system will now automatically switch between heating and cooling, depending on the actual room temperature.
Automatic Changeover
ON
Group B
Option
Switches
1 2 3
Switch #1 ON
Switch #2 OFF
Switch #3 (see Energy Management Recovery)
NOTE
In the AUTO mode, the thermostat will not allow the temperature separation between the high- est heat setting and the lowest cool setting to be less than 1°F. For example, if the highest heat setting is 75°F, the lowest cool setting cannot be below 77°F (see diagram below).
79
78COOLING TEMPERATURES
77
76DEAD BAND 1°F
75
74HEATING TEMPERATURES
For manual changeover, Group B option switches #1 and #2 should be in the OFF position.
•TWO HOUR TEMPERATURE OVER-
RIDE — Press 
or 
until the
14
