Aprilaire 8552 Thermostat User Manual


 
Setting Cooling Temperatures
NOTE: Cooling temperatures must be set at least 2 degrees higher than heating temperatures.
(Example: If heating temperature is set at 70˚F, cooling temperature must be set to at least 72˚F or higher.)
If not set at least 2 degrees higher, the thermostat will automatically lower the previously programmed
heating temperature to maintain the 2 degree separation.
NOTE: Your event starting times are the same in the cooling mode program as the heating mode start
times. Example: If your program start time for the Morning “ ” event is 7:00 AM for heating, the
cooling start time is already programmed for 7:00 AM as
well. Once you change the program starting time for an
event, the thermostat automatically
changes the starting time for both the heating and
cooling modes.
Step 1: Press and release the MODE button until
the word “COOL” and the “ ” cooling symbol
appear on display.
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