White Rodgers 1F91-71 Operation Manual page 13

pencil or small screwdriver to move the
switch to the ON position (see figure at
right). Leave the battery out of the thermo-
stat for at least two minutes, to allow the
thermostat to reset itself. DO NOT MOVE
ANY OTHER OPTION SWITCH, as it may
affect thermostat operation. Replace the
battery, put the thermostat back on the wall,
and restore 24 VAC power. To set the ther-
mostat for automatic changeover after pro-
gramming, press
mostat to AUTO (the setpoint display is
blank in the AUTO mode). The system will
now automatically switch between heating
and cooling depending on the actual room
temperature.
SYSTEM
to set the ther-
SWITCH
Automatic Changeover (ON)
ON
1
Switch #1 set at installation (DO NOT CHANGE)
Switch #2 set at installation (DO NOT CHANGE)
Switch #3 set at installation (DO NOT CHANGE)
Switch #4 ON
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 76 F, the lowest cool setting cannot
be below 77 F (see diagram below).
79
COOLING TEMPERATURES
78
77
76
75
HEATING TEMPERATURES
74
2 3 4
DEAD BAND 1 F
13