Aprilaire 8553 Setting Or Changing The Clock, Change the flashing symbol to the current day Week

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110-790B 7/11/01 3:11 PM Page 5

IMPORTANT: READ ALL INSTRUCTIONS THOROUGHLY

Programming your Aprilaire Thermostat is done in three easy steps: setting the clock, setting the event times, and setting your desired temperatures.

Setting Or Changing The Clock

Step 1: Press the CLOCK button and “Mo”

(or another day of the week) will flash. Use the

DECREASE or INCREASE button to

change the flashing symbol to the current day

of week.

– 3 –

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Contents Model Equipment Control Temperature Control Cooling Energy Star Program Information Cool = 78˚ Heat = 70˚Heat = 62˚ Cool = 85˚Change the flashing symbol to the current day Week Setting Or Changing The Clock110-790B 7/11/01 311 PM Progressive Recovery Setting Or Changing The Program110-790B 7/11/01 311 PM Heat = Cool = Program ScheduleSetting Or Changing Program Times Night Press and release the program button. The DaySetting Or Changing Heating Temperatures Night events Setting Or Changing Cooling TemperaturesRepeat steps 2 and 3 for the Day Evening , and Night events Press and release the Mode button until the wordTo Start Running The Program Reviewing Programmed Time Schedules Temperature SettingsThermostat Operation For Best PerformanceAprilaire Model Day Programmable Thermostat Return to the program Temperature ControlTime Control Equipment Control Time during sub-freezing temperatures Optional Settings For Additional Thermostat Features Automatically returns to the original program Installing contractor Following procedure must beFigure 1 carefully followed See Figure Place the cover On the base by lining up Turn the thermostat power back on Case Of Power Failure Cleaning Limited Warranty BOX 1467 MADISON, WI