Aprilaire 8553 - Manual (Page 14)

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Step 1: Press and release the MODE button until the word
“COOL” and the “ ” cooling symbol appear on display.
Step 2: To set all program temperatures, press and release
the SET TEMP button. The Morning “ ” event symbol
and flashing temperature will appear on the display.
Step 3: Press the DECREASE button or INCREASE
button to set the desired morning event temperature.
Step 4: Repeat steps 2 and 3 for the Day “ ”,
Evening “ ”, and Night “ ” events.
NOTE: If thermostat is set for 2 events per day, only the
Day “ ” and Night “ ” events can be programmed.
110-790B 7/11/01 3:11 PM Page 14