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Programmable Thermostat RTH221
11
1Press the Set button 2 times until Set Schedule appears. The Wake period is
displayed.
NOTE: To set another period, press the Set button as many times as needed until the
desired period is displayed and its time or temperature is flashing.
2 When the time flashes, press the Up or Down button to set the time.
3Press the Set button.
4 To set the temperature for cooling mode, first place the System switch in Cool. To
set the temperature for heating mode, first place the System switch in Heat.
5 When the temperature flashes, press the Up or Down button to set the temperature.
6Press the Set button.
7 Repeat steps 2 through 6 to set each of the remaining periods.
8 Once all changes are made, press the Run button to save them and return to
normal display. (The changes will automatically be saved if you do not press any
button for 60 seconds.)
Modifying the schedule
Wake period is set
to 6 a.m. and 70°F
To skip a period
(except Wake),
press the Hold
button for 4 seconds
while that period is
displayed.