Aprilaire 8552 Thermostat User Manual
Contents
1. 25 Limited 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 Electronic Thermostat you av have made a significant step toward conserving energy usage and costs Groggy while improving your indoor comfort SHIN TEEARTH Same YOUR In fact the Aprilaire Electronic Thermostat 8552 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 Rese2. The cover will snap into this position THERMOSTAT PANEL Figure 1 CAUTION TO PREVENT DAMAGE AVOID CONTACT Carefully insert a medium WITH BLUE TEM PERATURE SENSOR ON BOTTOM RIGHT sized flathead screw driver HAND CORNER OF THERMOSTAT CIRCUIT BOARD into the latch access slot see Figure 1 O 21 N Figure 2 LOCK TAB ay d Gently push in and pry up on the handle of the screwdriver until the lock tab disengages from the catch tab you should feel or hear a click see Figure 2 e After the latch releases grip the thermostat panel at the bottom corners and swing it up and away from the base to completely separate See Figure 3 229s Figure 3 Once the thermostat panel has been opened and removed from the base turn the thermostat over and locate the DIP switches found on the circuit board according to the following drawing Be careful to change only the intended DIP switches per the explanation given at the beginning of this section After the DIP switches have been set to the desired position carefully reassemble the thermostat a Place the cover on the base by lining up the 2 round pegs on the bottom of the cover with the half circle cutouts on the top of the base Note that the bottom of the cover when fully open go Slides in behind the top of the base Swing the cover fully open The
3. maintain temperature according to the programming previously 17 completed unless an override temperature has been entered Note that a Flame icon is on display which flickers when the furnace is running Automatic Heating and Cooling This mode can be useful during times of the year and in climates when it is cool at night requiring heating but warm in the afternoon requiring cooling Press and release the MODE button until the word AUTO appears on the display In this mode the cooling and heating system will maintain temperature according to the programming previously completed unless an override temperature has been entered The heating and cooling systems will not operate at the same time Either will turn on depending on which programmed set point is closest to the room temperature Note that both the Snowflake Flame icons are on the display The Snowflake will flash or the Flame will flicker depending on which equipment is running Turning the System Off Press the MODE button until the word OFF appears the display In this mode neither heating or air conditioning will operate regardless of the temperature The thermostat can still be programmed the optional outdoor temperature sensor will work and the furnace fan will turn on if the FAN button is pressed To avoid frozen water pipes DO NOT use the OFF mode for long periods of time during sub freezing temperatures NOTE After selecting
4. o_o cover will stay in place Figure 4 PRESS IN CENTER OF THERMOSTAT PANEL UNTIL LOCK TAB SNAPS IN PLACE 24 ALIGN HINGE TABS b Align the hinge tabs on the base and thermostat panel Swing the panel to the base and snap in place at bottom of thermostat panel see Figure 4 c Turn the thermostat power back on CAUTION TO PREVENT DAMAGE AVOID CONTACT WITH BLUE TEM PERATURE SENSOR ON BOTTOM RIGHT HAND CORNER OF THERM OSTAT CIRCUIT BOARD In Case Of Power Failure The M odel 8552 thermostat does not require a battery If the power goes out the letters AC appear the display indicating power is not being supplied to the thermostat AC will remain on the display for up to approximately 30 minutes after the power goes out During the period that the power is off the heating cooling system will not operate This thermostat is equipped with a continuous memory feature which does not require any battery The thermostat will never lose what has been programmed regardless of the length of the power outage After a period of 30 minutes without power the clock will need to be reset The clock will default to 12 00 Refer to the Programming Instructions to reset the clock Cleaning If the surface of the thermostat becomes dirty it can be cleaned with plain water or many non abrasive household cleaners such as glass cleaner When using any cleaner be careful not to get any into t
5. will flash Use the DECREASE g 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 J 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 Setting Or Changing The Weekday Program For Heating M ode 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 1 program for M onday 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 coo
6. ELECTRONIC THERMOSTAT Owner s M anual MODEL 8552 5 2 Day Programmable Thermostat OWNER S MANUAL TABLE OF CONTENTS Energy Star Program Information 1 Setting Or Changing The 3 Setting Or Changing The Weekday Program For Heating Mode 5 Program Schedules plate tas onan op can 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 1 0 cece cece ete teen eens 12 For Best Performante ba cad els 13 Thermostat Operation eked ee ada el 13 e Temperature Control 15 TIME Control 16 Equipment 17 Optional Settings For Additional Thermostat Features 19 In Case Of Power Faillite seri urrie yeaa oita e hala cand phil 25 Stop asa wha tena
7. Hour and Mingle Prass to change batapan Tima and Sawing Tima Eveni ican give saani morning day saning might Press j proageam ard alari hes Presa 10 qeertide program indelinitely Press Aasume miun io progam Time and day of iha Time dogs nat display during Hold or OH Fan icon displays during continugus tar anhy Aprilaire Model 8552 5 2 Day Programmable Thermostat Presa bo ard niga Prass both at he same ima ko matich 14 bewoon and Press in display lamparatuns wioptional Modal 6041 Aemote Ouidoor Sensor Heal and Cool Moda flashes during cooling call Prada select Heat Goal auto Press for coninuous Press again to resume bo Prasa to return pregam trom 1 or ponmanent hold ar wit programming Sequence PERATURE CONTROL Reading the Actual Room Temperature The 8552 normally displays the room temperature not the set point temperature Check the Set Point Temperature Press and release the DECREASE g button or INCREASE N button The thermostat will display the programmed set point temperature and a thermometer for 5 seconds before automatically returning to the actual room temperature display Temporarily Override the Set Temperature Press and hold the DECREASE button or INCREASE Q butto
8. IS THERMOSTAT INSTALLED BY A QUALIFIED HEATING AND AIR CONDITIONING CONTRACTOR IF THE LIMITED WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CONTRACTOR ALL DISCLAIMERS OF IMPLIED WARRANTIES SHALL BE EFFECTIVE UPON INSTALLATION Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so the above exclusion or limitations may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state 26 5 27 5 28 5 29 THE BEST IN INDOOR AIR COMFORT The Aprilaire Total Indoor Air Comfort System is an integrated group of air quality enhancement products designed to work with your heating and cooling system to make your home more comfortable For the best in indoor air quality ask your heating and cooling contractor about these fine Aprilaire products or visit us at www aprilaire com for your Indoor Air Solutions Automatic Humidifier High Efficiency Air Cleaner Fresh Air Exchanger The Best Cure For Dryness Nobody Makes Clean Air Easier Only The Freshest Homes Have April Air The world s first computer equipped The economical trouble free high Your best value for a constant controlled completely automatic humidifier efficiency air cleaner for your home supply of fresh air with energy recovery Zone Control System Hectronic T
9. a new mode the thermostat initiates a delay of up to 4 minutes to protect the heating and cooling equipment 18 Optional Settings For Additional Thermostat Features The 8552 thermostat is equipped with 3 DIP switches located inside the thermostat on the printed circuit board These switches are preset by the factory to typical home heating and air conditioning system requirements The installing contractor also reviewed the settings during installation to be sure the thermostat will operate properly with your heating and air conditioning system The DIP switches can however be changed to customize the thermostat s operation to your particular needs This should only be done after consulting with your contractor The M odel 8552 DIP switches control the following functions 1 4 2 min Minimum Equipment On Off Times This switch is factory preset at 2 minutes This switch provides short cycle protection for the furnace and air conditioning unit If you feel that the furnace or air conditioning system turns on and off too many times per hour ask your contractor about changing the switch to a 4 minute minimum on time Keep in mind however that this may increase the overall temperature variation in the house due to longer run and off times DO NOT change the position of this switch without first consulting with your contractor 19 No 2 Keypad Lock If tampering with the thermostat is expected and unwanted the keypa
10. arch Products has determined that this product meets the Energy Star guidelines for energy efficiency 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 THERMOSTAT DESIRED EVENT SYMBOL TEMPERATURE Tue Thu SETTING Mornin Heat 70 6 00 6 00 6 00 6 00 6 00 6 00 60 Te ol 78 ol 85 Evening ane 5 00 5 00 5 00 500 5 00 5 00 5 00 ol 78 pm pm pm pm pm pm pm Night 10 00 10 00 10 00 10 00 10 00 10 00 10 00 ol 82 pm pm pm pm pm pm pm 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 r 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 gt lower right hand corner of the display will appear in or another day of the week will flash Use the DECREASE g or INCREASE N button to change the flashing symbol to the current day Step 3 Press the CLOCK button again and 12 hours AM or
11. d can be locked by moving this switch from the factory set OFF position to ON This should not be done until all programming is finalized In the locked position only the following functions can be done outdoor temperature button will display the outdoor temperature DECREASE button or INCREASE Q button will temporarily change the set point a maximum of plus or minus 3 degrees for a period of 1 hour before the thermostat automatically returns to the original program If the thermostat does not respond when a button is pushed it may be because the keypad has been locked A Lock icon will appear when a button other than OUTDOOR is pushed if the keypad has been locked No 3 Fan with Heat Call This switch was set by the installing contractor to operate the thermostat properly with your equipment DO NOT change the position of this switch without consulting with the installing contractor 20 To change the DIP switch settings the thermostat must be removed from the base which is attached to the wall The power to the thermostat must be turned off before disassembling or the thermostat can be permanently damaged If you do not know where the switch is that controls the power to your thermostat do not attempt to access the DIP switches The following procedure must be carefully follow ed a Turn off power to BASE the thermostat Completely open the LATCH ACCESS SLOT thermostat cover Mion La
12. g to the actual room temperature display TIM E CONTROL Change From 12 to 24 Hour Clock Press and release the CLOCK button then press the MODE button To return to a standard clock repeat the process 16 EQUIPM ENT CONTROL Turning the Fan At any time the system fan can run continuously by pressing the FAN button Note that a Fan icon appears in the lower part of the display indicating that the fan is continuously operating To return the fan to the normal operating mode press the FAN button again which will remove the icon from the display In the normal operating mode the fan will only run when the heating or air conditioning is operating Continuous fan operation is beneficial if your system is equipped with a high efficiency air cleaner or a humidifier or to circulate air in the home when neither heating nor air conditioning is needed For some heat only systems continuous fan operation may not be an option Selecting Cooling Mode Press the MODE button until the word COOL appears on the display In this mode the air conditioning system will maintain temperature according to the programming previously completed unless an override temperature has been entered Note that a Snowflake icon is the display which flashes when the air conditioning is running Selecting Heating Mode Press the MODE button until the word HEAT appears on the display In this mode the heating system will
13. he interior of the thermostat Do not spray any cleaner directly onto the thermostat Spray the cleaner onto a soft cloth and wipe the surface of the thermostat 25 Limited Warranty Your Research Products Corporation Aprilaire Thermostat unit is expressly warranted for two 2 years from date of installation to be free from defects in materials and workmanship Research Products Corporation s exclusive obligation under this warranty shall be to supply without charge a replacement for any thermostat which is found to be defective within a two 2 year period and which is returned together with the date of installation no later than thirty 30 days after said two 2 year period by you to either your original supplier or to Research Products Corporation Madison Wisconsin 53701 THIS WARRANTY SHALL NOT OBLIGATE RESEARCH PRODUCTS CORPORATION FOR ANY LABOR COSTS AND SHALL NOT APPLY TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY YOUR INSTALLER AS CONTRASTED TO DEFECTS IN THE THERMOSTAT ITSELF IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL BE LIMITED IN DURATION TO THE AFORESAID TWO YEAR PERIOD RESEARCH PRODUCTS CORPORATION S LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OTHER THAN DAMAGES FOR PERSONAL INJURIES RESULTING FROM ANY BREACH OF THE AFORESAID IMPLIED WARRANTIES OR THE ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED THIS LIMITED WARRANTY IS VOID IF DEFECT S RESULT FROM FAILURE TO HAVE TH
14. hermostat Custom Comfort Throughout Your Home Efficiency Never Looked So Good The most reliable way to achieve temperature Ultra thin easy to use programmable or digital control in every area of your home controls featuring pinpoint accuracy RESEARCH PRODUCTS corporation P O BOX 1467 MADISON WI 53701 1467 Products For Better Indoor Air Quality B2202106 REV 11 99 110 948
15. ling 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 00AM PROGRAM SCHEDULE TIME SCHEDULE THERM OSTAT DESIRED SATURDAY amp SYMBOL TEM PERATURE SUNDAY SETTING 90 coy Cool 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 MODE buttons Press and release the PROGRAM button to advance to the next event Step 1 Press and release the MODE button until the word o HEAT and the f heating symbol appear on the display Step 2 Press and release the sn button Mo Tu We Th Fr Moming event is RESUME symbol 2 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 mor
16. n to change the room set point temperature in 1 degree increments The new set point temperature will be held for 3 hours then the thermostat will automatically return to the program Hold a New Temperature SetPoint Press and hold the DECREASE button or INCREASE Q button to change the room set point temperature in 1 degree steps The new set point temperature can be maintained indefinitely by pressing and releasing the HOLD button The word HOLD will be displayed The thermostat will maintain this new set point temperature until the RESUME button is pressed returning the thermostat to the original program This procedure is typically used during extended vacant periods vacations business trips etc to hold an economical set point until you return 15 Retuming to Programmed Operation At any time press the RESUME button to return the thermostat to operate as programmed Change Between C and F The thermostat has the capability of displaying either Celsius or Fahrenheit temperatures If the displayed temperature seems abnormally high or low ie 70 F 21 C you may need to switch to C or F by simultaneously pressing the DECREASE button and the INCREASE N button Checking the Outdoor Temperature If your thermostat was installed with the optional Aprilaire Outdoor Temperature Sensor simply press the OUTDOOR button and the thermostat will display the outdoor temperature for 3 seconds before automatically returnin
17. ning Step 3 Press the DECREASE button or INCREASE Q button to set the desired hour for the M oming NT event Step 4 Press and release the PROGRAM button 00 or some other minutes will flash Step 5 Press the DECREASE g button or INCREASE Q button to set the desired minutes for the Morning iv event program starting times are set 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 Q button to set the desired heating temperature for the M oming event Step 8 Press and release the PROGRAM button the Day CY event symbol will appear You are now setting the time and heating temperature you want jane 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 EE 2 event symbol will appear You are now setting the time and heating temperature you want during the evening 8 23 Step 11 Repeat steps 2 6 to complete programming for the Evening event Step 12 Press and release the PROGRAM button the Night event symbol will appear You are now setting the time and heating temperature you want at night Step 13 Repeat steps 2 6 to complete programming for the Night e
18. ooling symbol appear on display 10 Step 2 Press and release the PROGRAM button Mo 14 We Th Morning event symbol and flashing starting time you programmed will appear on the display Step 3 Press and release the PROGRAM button repeatedly until the temperature flashes J 25 gt Step 4 Press the DECREASE or INCREASE tego button to set the desired cooling temperature for the morning event You are now setting the cooling temperature you want in the morning Step 5 Repeat steps 2 4 for the Day 27 Evening and Night events Step 6 After selecting the cooling temperature for the Weekday Night event press and release the a tae PROGRAM button Sa event symbol and flashing starting time you programmed will appear on 11 Step 7 Press and release the PROGRAM button until the temperature for the Morning Y event flashes Repeat steps 2 4 for the M oming CI Evenin ar a 9 x y y g Night events Review ing Programmed Time Schedules And Temperature Settings Step 1 Press and release the MODE button repeatedly to advance to the desired mode heating or cooling Step 2 Press and release the PROGRAM button repeatedly to advance to Mo Tu We Th Fr or Sa Su and specific event Contin
19. ue pressing the PROGRAM button to review the time schedules and temperature settings for each desired event To Start Running The Program After all temperatures and start times have been programmed press and release the RESUME button to start running programs If no button is pressed thermostat will resume automatically in approximately 15 seconds 12 For Best Performance The Aprilaire 8552 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 M odel 8552 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 13 Fresa sat
20. vent Setting Or Changing The Weekend Program For Heating Mode Step 1 After setting the Night 6 event Weekday program press and release the PROGRAM button Su the Morning event symbol flashing 12 or some other hour and flashing AM or PM will appear on the display You are now programming the time and temperatures for the weekend Step 2 Repeat steps 2 6 identical to Weekday ee Day 9 Evening lt gt Night ne heating mode as applicable 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 the cooling mode program as the heating mode start times Example If your program start time for the Morning x event is 7 00 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 PROGRAM 5 Step 1 Press and release the MODE button until the word COOL and the c
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