Aprilaire 8551 Owner'S Manual Download Page 24

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B2202104 REV. 11/99

110-904

P.O. BOX 1467 • MADISON, WI 53701-1467

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110-904 7/11/01 4:29 PM Page 24

Summary of Contents for 8551

Page 1: ...Owner s Manual MODEL 8551 5 2 Day Programmable Thermostat ELECTRONIC THERMOSTAT 110 904 7 11 01 4 29 PM Page 1 ...

Page 2: ...wing Programmed Time Schedules And Temperature Settings 8 To Start Running The Program 8 For Best Performance 8 Thermostat Operation 9 Temperature Control 9 Time Control 12 Equipment Control 13 Optional Settings For Additional Thermostat Features 14 In Case Of Power Failure 20 Cleaning 20 Limited Warranty 21 Research Products Corporation 2000 110 904 7 11 01 4 29 PM Page 2 ...

Page 3: ...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 110 904 7 11 01 4 29 PM Pa...

Page 4: ...he 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 110 904 7 11 01 4 29 PM Page 4 ...

Page 5: ...the Night event is set when you go to bed Each event will have 1 cooling temperature Your Aprilaire Thermostat allows 1 program for Monday through Friday and 1 program for Saturday and Sunday Complete the chart on page 4 with your desired temperatures and time schedules before beginning programming NOTE It will take some time for your cooling system to reach the desired temperature when returning ...

Page 6: ...tat 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...

Page 7: ... 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 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 110 904 7 11 01 4 29 PM Page 7 ...

Page 8: ... 7 Press the DECREASE button or INCREASE button to set the desired cooling 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 cooling 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 symb...

Page 9: ...Night event Setting Or Changing The Weekend Program Step 1 After setting the Night event Weekday program press and release the PROGRAM button Sa 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 programming for Morning Day Evening ...

Page 10: ...t times have been programmed press and release the RESUME button to start running programs If no button is pressed the thermostat will resume automatically in approximately 15 seconds For Best Performance The Aprilaire Model 8551 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...

Page 11: ...s 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 TEMPERATURE CONTROL Reading the Actual Room Temperature The Model 8551 normally displays the room temperature not the set point temperature Check the Set Point Temp...

Page 12: ... 10 110 904 7 11 01 4 29 PM Page 12 ...

Page 13: ...ure in 1 degree increments 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 t...

Page 14: ...ton 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 returning to the actual room temperature display TIME CONTROL Change From 12 to 24 Hour Clock Press and release the CLOCK button then press the MODE but...

Page 15: ...g 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 on the display which flashes when the air conditioning is running Turning the System Off Press the MODE button until the word...

Page 16: ...rticular needs This should only be done after consulting with your contractor The Model 8551 DIP switches control the following functions No 1 4 min 2 min Minimum Equipment On Off Times This switch is factory preset at 2 minutes This switch provides short cycle protection for the air conditioning unit If you feel that the air conditioning system turns on and off too many times per hour ask your co...

Page 17: ... The outdoor temperature button will display the outdoor temperature The DECREASE button or INCREASE 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 appea...

Page 18: ...er to your thermostat do not attempt to access the DIP switches The following procedure must be carefully followed a Turn off power to the thermostat b Completely open the thermostat cover The cover will snap into this position c Carefully insert a medium sized flathead screwdriver into the latch access slot see Figure 1 Figure 1 CAUTION TO PREVENT DAMAGE AVOID CONTACT WITH BLUE TEMPERATURE SENSOR...

Page 19: ...iver 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 3 110 904 7 11 01 4 29 PM Page 19 ...

Page 20: ...ation 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 slides in behind the top of the base Swing the cover fully open The c...

Page 21: ... 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 TEMPERATURE SENSOR ON BOTTOM RIGHT HAND CORNER OF THERMOSTAT CIRCUIT BOARD 110 904 7 11 01 4 29 PM Page 21 ...

Page 22: ...of the power outage If the thermostat has been set to Hold a particular temperature and the power fails the thermostat will resume that temperature when the power is restored After a period of 30 minutes without power the clock will need to be reset The clock will default to 12 00 AM Refer to the Programming Instructions to reset the clock Cleaning If the surface of the thermostat becomes dirty it...

Page 23: ... 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 WARRAN...

Page 24: ...idifier The Best Cure For Dryness The world s first computer equipped completely automatic humidifier High Efficiency Air Cleaner Nobody Makes Clean Air Easier The economical trouble free high efficiency air cleaner for your home Fresh Air Exchanger Only The Freshest Homes Have April Air Your best value for a constant controlled supply of fresh air with energy recovery Zone Control System Custom C...

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