Aprilaire Thermostat 8553 User Manual

110-790B 7/11/01 3:11 PM Page 1  
®
ELECTRONIC THERMOSTAT  
Owners Manual  
MODEL 8553  
7 Day Programmable Thermostat  
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ENERGY STAR ® Program Information  
About half of all energy used by households goes to heating and cooling the  
home. By selecting a programmable Aprilaire® Electronic Thermostat, you  
have made a significant step toward conserving energy usage and costs,  
while improving your indoor comfort.  
In fact, the Aprilaire Electronic Thermostat Model 8553 has earned the ENERGY STAR designation of the  
U.S. Environmental Protection Agency (EPA). This means that your Aprilaire Thermostat is a highly  
efficient, cutting edge product that is good for the environment. It saves energy and costs less to  
operate than similar products that do not qualify for the ENERGY STAR label.  
ENERGY STAR products help you differentiate between standard efficiency and high efficiency products.  
By using ENERGY STAR products you are helping to prevent air pollution while saving money on your  
utility bills.  
According to the EPA, taking advantage of the times that a home is unoccupied or the occupants  
are asleep, an ENERGY STAR thermostat can reduce heating and cooling bills by as much as 30%. The  
Aprilaire Thermostat has programmable capabilities that allow you full flexibility to set your heating  
and cooling systems to meet your comfort and energy needs. As an ENERGY STAR partner, Research  
Products has determined that this product meets the ENERGY STAR guidelines for energy efficiency.  
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110-790B 7/11/01 3:11 PM Page 4  
As part of the ENERGY STAR program, your thermostat has been programmed with the following times and  
temperatures. This has been done to achieve energy efficiency and lower energy bills. If you need to  
modify your program schedule, see page 7.  
TIME SCHEDULE  
THERMOSTAT  
SYMBOL  
DESIRED  
TEMPERATURE  
SETTING  
EVENT  
Mon Tue Wed Thu  
Fri  
Sat Sun  
Morning  
Heat = 70˚  
Cool = 78˚  
6:00 6:00 6:00 6:00 6:00 6:00 6:00  
am am am am am am am  
Day  
Evening  
Night  
Heat = 62˚  
Cool = 85˚  
8:00 8:00 8:00 8:00 8:00 8:00 8:00  
am am am am am am am  
Heat = 70˚  
Cool = 78˚  
5:00 5:00 5:00 5:00 5:00 5:00 5:00  
pm pm pm pm pm pm pm  
Heat = 62˚  
Cool = 82˚  
10:00 10:00 10:00 10:00 10:00 10:00 10:00  
pm pm pm pm pm pm pm  
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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.  
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110-790B 7/11/01 3:11 PM Page 6  
Step 2: Press the CLOCK button again and “12:” (hours)  
and “AM” or “PM” will flash. Use the DECREASE or  
INCREASE button to change the flashing symbol  
to the current hour making sure the hour has the proper  
AM or PM designation.  
Step 3: Press the CLOCK button and “:00” (minutes) will  
flash. Use the DECREASE  
or INCREASE  
button  
to change the flashing symbol to the current minute.  
Step 4: Press the CLOCK button again. The clock is now  
set and the current time appears on the display.  
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110-790B 7/11/01 3:11 PM Page 7  
Setting Or Changing The Program  
Programming your Aprilaire Electronic Thermostat involves selecting the temperature you want in your  
home and selecting the time you want it to be that temperature. Your Aprilaire Thermostat will allow a  
maximum of 4 time schedules per day. Each time schedule is known as an “event.The Morning event  
is typically when you wake up and is the first event of the day. The Day event is typically set when you  
leave for work. The Evening event is typically set when you come home from work and the Night event  
is set when you go to bed. Each event will have 2 temperatures, 1 heating temperature and 1 cooling  
temperature. The cooling temperature must be at least 2 degrees higher than the heating temperature.  
Your Aprilaire Thermostat allows a different program for each day of the week. Complete the chart on  
page 7 with your desired temperatures and time schedules before beginning programming.  
Progressive Recovery  
Your Aprilaire Thermostat is equipped with a programming feature called “Progressive Recovery.”  
This feature assures that your house will economically achieve the desired comfort temperature at  
the programmed time when returning from an economy or setback temperature. For example, if you  
like a wake-up temperature of 68°F at 6:00 AM from a setback of 65°F it is not necessary to set the  
morning program for 5:00 AM. The thermostat will automatically start warming your house in advance  
so your comfort temperature is reached on time.The progressive recovery feature must be activated  
in order to work.  
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110-790B 7/11/01 3:11 PM Page 8  
To activate the progressive recovery  
mode simultaneously press the  
PROGRAM and FAN buttons. A small  
thermostat icon, “  
“, will appear  
under the clock. Once in this mode  
proceed with programming your  
thermostat remembering to use exact  
times for each event time change.  
NOTE: If not using Progressive Recovery, it will take some time for your heating or cooling system to reach the  
desired temperature when returning from a setback. Therefore, it is suggested you set your program time before the  
actual time you want your home to reach the desired temperature. For example, if you get up at 7:00 AM and have a  
6 degree setback, set your Morning event at 6:00 AM to be sure the desired temperature is reached by 7:00 AM.  
NOTE: This thermostat can be programmed with either 2 events per day (day and night) or 4 events per day (morning,  
day, evening, and night). Before programming the thermostat, decide which setting is best for your personal schedule.  
The thermostat is factory preset for 4 events per day. To change to two events per day, refer to page 20 “Optional  
Settings for Additional Thermostat Features,or contact your contractor for assistance.  
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PROGRAM SCHEDULE  
TIME SCHEDULE  
THERMOSTAT  
SYMBOL  
DESIRED  
TEMPERATURE  
SETTING  
EVENT  
Mon Tue Wed Thu Fri  
Sat Sun  
Morning  
Heat =  
Cool =  
Day  
Evening  
Night  
Heat =  
Cool =  
Heat =  
Cool =  
Heat =  
Cool =  
NOTE: While programming you must press a button at least every 2 minutes or the thermostat will revert back to the  
operational mode. If this happens, simply repeatedly press or press and hold the PROGRAM button until you get back  
to where you left off. The information you have already entered has been retained.  
NOTE: If consecutive events have the same temperature, you can skip an event by simultaneously pressing the  
PROGRAM and MODE buttons. Press and release the PROGRAM button to advance to the next event.  
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110-790B 7/11/01 3:11 PM Page 10  
Setting Or Changing  
Program Times  
Step 1: Press and release the PROGRAM button.  
Mo” or the current day of the week will flash and the  
Morning “  
“ event symbol will appear on the  
button or INCREASE  
display. Press the DECREASE  
button to access the day of the week you wish to  
start programming or to change the existing program.  
Step 2: Press and release the PROGRAM button.  
The hours and “AM” or “PM” will flash. Press the  
DECREASE  
button or INCREASE  
button to  
set the start time hours for the Morning “  
event for Monday (or any other day as set in step 1).  
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110-790B 7/11/01 3:11 PM Page 11  
Step 3: Press and release the PROGRAM button.  
The minutes will flash on the display. Press the  
DECREASE  
button or INCREASE  
button to  
set the select time minutes for the Morning “  
event (program times are set in ten-minute increments).  
Step 4: Press and release the program button. The Day  
” event symbol, flashing hours, and “AM” or “PM”  
will appear on the display. Repeat steps 2 and 3 for the  
Day “ ”, Evening “ ”, and Night “ ”.  
Step 5: Press and release the PROGRAM button. The word “Copy” and the day just programmed will  
appear on the display. If your schedule is the same for consecutive days, press the DECREASE  
button or INCREASE  
button to add days to the display. This prevents from having to program the  
same times over and over again or continue on to step 6 to program the next day.  
Step 6: Press and release the PROGRAM button to continue to the next day to be programmed.  
Repeat steps 2-5 for each day.  
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110-790B 7/11/01 3:11 PM Page 12  
Setting Or Changing  
Heating Temperatures  
Step 1: Press and release the MODE button until the  
word “Heat” and the Morning “  
” event symbol  
appear on the 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  
INCREASE button to set the desired Morning  
“ event temperature.  
button or  
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