Aprilaire 8553 owner manual For Best Performance, Thermostat Operation

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110-790B 7/11/01 3:11 PM Page 16

For Best Performance

The Aprilaire Model 8553 thermostat is designed for accurate temperature control and easy operation. The following guidelines should be followed to ensure proper operation of the thermostat:

1.When the thermostat is operating, close the cover to allow for proper air circulation over the temperature sensor.

2.Do not place anything which can give off warm or cool air, such as candles or portable humidifiers, near the thermostat.

3.Although the thermostat is internally equipped to prevent short cycling of the furnace and air conditioner, it is possible to inadvertently override this protection. Do not start, stop, and restart the equipment without allowing a minimum of 2 minutes between heating or cooling cycles.

Thermostat Operation

The Model 8553 is a full-featured thermostat which allows for additional control and operations after basic time and temperature programming is completed. In addition to the programming buttons used to set up all event times and temperatures, additional buttons control the following functions:

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Contents Model Cooling Temperature ControlEquipment Control Energy Star Program Information Heat = 70˚ Cool = 78˚Heat = 62˚ Cool = 85˚Setting Or Changing The Clock Change the flashing symbol to the current day Week110-790B 7/11/01 311 PM Setting Or Changing The Program Progressive Recovery110-790B 7/11/01 311 PM Program Schedule Heat = Cool =Setting Or Changing Program Times Press and release the program button. The Day NightSetting Or Changing Heating Temperatures Setting Or Changing Cooling Temperatures Night eventsPress and release the Mode button until the word Repeat steps 2 and 3 for the Day Evening , and Night eventsReviewing Programmed Time Schedules Temperature Settings To Start Running The ProgramFor Best Performance Thermostat OperationAprilaire Model Day Programmable Thermostat Temperature Control Return to the programTime 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
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