Aprilaire 8552 User Manual

®

ELE CTR ONIC THERMO S T A T

O wner’s Manu al

MODEL 8552

5-2 Day Programmable

Thermostat

OWNER’S MANUAL – TABLE OF CONTENTS

Energy Star®Program Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Setting Or Changing The Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Setting Or Changing The Weekday Program For Heating Mode . . . . . . . . . . . . . . . . . . . . . . . . . 5

Program Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Setting Or Changing The Weekend Program For Heating Mode . . . . . . . . . . . . . . . . . . . . . . . . . 9

Setting Cooling Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Reviewing Programmed Time Schedules And Temperature Settings . . . . . . . . . . . . . . . . . . . . 12

To Start Running The Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

For Best Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Thermostat Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

• Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

• Time Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

• Equipment Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Optional Settings For Additional Thermostat Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

In Case Of Power Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

© Research Products Corporation 2000

Energy Star®Program Information

About half of all energy used by households goes to heating and cooling the
home. By selecting a programmable Aprilaire
have made a significant step toward conserving energy usage and costs,
while improving your indoor comfort.

In fact, the Aprilaire Electronic Thermostat Model 8552 has earned the “Energy Star
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.

®

Electronic Thermostat, you

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®

” designation

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 6.

TIME SCHEDULE

THERMOSTAT DESIRED

EVENT SYMBOL TEMPERATURE Mon Tue Wed Thu Fri Sat Sun

SETTING

Morning Heat = 70˚ 6:00 6:00 6:00 6:00 6:00 6:00 6:00

Cool = 78˚

am am am am am am am

Day Heat = 62˚ 8:00 8:00 8:00 8:00 8:00 8:00 8:00

Cool = 85˚

Evening Heat = 70˚ 5:00 5:00 5:00 5:00 5:00 5:00 5:00

Cool = 78˚

Night Heat = 62˚ 10:00 10:00 10:00 10:00 10:00 10:00 10:00

Cool = 82˚

am am am am am am am

pm pm pm pm pm pm pm

pm pm pm pm pm pm pm

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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: If you are currently in Daylight Saving Time
(first Sunday in April thru fourth Sunday in October),
press the DST button and “ “ will appear in the
lower right-hand corner of the display.

Step 2: 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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Step 3: 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 4: 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 5: Press the CLOCK button again. The clock is now
set and the current time appears on the display.

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Setting Or Changing The

Weekday Program For Heating Mode

Programming your AprilaireElectronic 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 Dayevent 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 1 program for Monday through Friday and 1 program for
Saturday and Sunday. Complete the chart on page 6 with your desired temperatures and time schedules
before beginning programming:

NOTE: 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.

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PROGRAM SCHEDULE

TIME SCHEDULE

EVENT SYMBOL TEMPERATURE FRIDAY SUNDAY

Morning Heat =

Day Heat =

Evening Heat =

Night Heat =

NOTE: While programming you must press a button at least every 15 seconds or the thermostat will revert back to the
operational mode. If this happens, simply repeatedly press 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 MODEbuttons. Press and release the PROGRAM button to advance to the next event.

THERMOSTAT DESIRED MONDAY – SATURDAY &

SETTING

Cool =

Cool =

Cool =

Cool =

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Step 1: Press and release the MODE button until the word
“HEA T” and the “ ” heating symbol appear on the display.

Step 2: Press and release the

PROGRAM button – “MoTu
We Th Fr”; Morning event

symbol “ ”;

flashing “12:” (or some
other hour); and flashing “AM” or “PM” will appear on the
display. You are now setting the time you want your heating
or cooling equipment to come on in the morning.

Step 3: Press the DECREASE button or INCREASE
button to set the desired hour for the Morning “ ” event.

Step 4: Press and release the PROGRAM button – “:00”
(or some other minutes) will flash.

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Step 5: Press the DECREASE button or INCREASE
button to set the desired minutes for the Morning “”
event (program starting times are set in ten-minute
increments).

Step 6: Press and release the PROGRAM button – the current
heating temperature will begin to flash. You are now setting
the heating temperature you desire in the morning.

Step 7: Press the DECREASE button or INCREASE

button to set the desired heating temperature for the Morning “ ” event.

Step 8: Press and release the PROGRAM button – the Day“ ” event symbol will appear. You are
now setting the time and heating temperature you want throughout the day.

Step 9: Repeat steps 2-6 to complete programming for the Day “ ” event.

Step 10: Press and release the PROGRAM button – the Evening“ ” event symbol will appear.

You are now setting the time and heating temperature you want during the evening.

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