Aprilaire 8552 Owner's Manual
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Aprilaire 8552 Owner's Manual

Aprilaire 8552 Owner's Manual

5-2 day programmable thermostat
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ELECTRONIC THERMOSTAT
Owner' s Manual
MODEL 8552
5-2 Day Programmable
Thermostat

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Summary of Contents for Aprilaire 8552

  • Page 1 ® ELECTRONIC THERMOSTAT Owner’ s Manual MODEL 8552 5-2 Day Programmable Thermostat...

  • Page 2: Table Of Contents

    OWNER’S MANUAL – TABLE OF CONTENTS Energy Star Program Information ........... 1 ®...

  • Page 3: Energy Star Program Information

    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.
  • 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 6. THERMOSTAT EVENT SYMBOL...

  • Page 5: Setting Or Changing The Clock

    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 “...
  • Page 6 Step 3: Press the CLOCK button again and “12:” (hours) and “AM” or “PM” will flash. Use the DECREASE 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”...

  • Page 7: Setting Or Changing The Weekday Program For Heating Mode

    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.

  • Page 8: Program Schedule

    THERMOSTAT EVENT SYMBOL Morning Evening Night 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.
  • Page 9 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 to set the desired hour for the Morning “ Step 4: Press and release the PROGRAM button –...
  • Page 10 button to set the desired heating temperature for the Morning “ Step 8: Press and release the PROGRAM button – the Day “ now setting the time and heating temperature you want throughout the day. Step 9: Repeat steps 2-6 to complete programming for the Day “ Step 10: Press and release the PROGRAM button –...

  • Page 11: Setting Or Changing The Weekend Program For Heating Mode

    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 “...

  • Page 12: Setting Cooling Temperatures

    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.
  • Page 13 Step 2: Press and release the PROGRAM button – “Mo Tu We Th Fr”; 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. Step 4: Press the DECREASE button or INCREASE button to set the desired cooling temperature (for the morning...

  • Page 14: Reviewing Programmed Time Schedules And Temperature Settings

    Step 7: Press and release the PROGRAM button until the temperature for the Morning “ ” event flashes. Repeat steps 2-4 for the Morning “ ”, Day “ ”, Evening “ ”, and Night “ ” events. Reviewing Programmed Time Schedules And Temperature Settings Step 1: Press and release the MODE button repeatedly to advance to the desired mode (heating or cooling).

  • Page 15: For Best Performance

    2 minutes between heating or cooling cycles. The Model 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...
  • Page 16 – 14 –...

  • Page 17: Temperature Control

    TEMPERATURE CONTROL • Reading the Actual Room Temperature: The Model 8552 normally displays the room temperature, not the set-point temperature. • Check the Set-Point Temperature: Press and release the DECREASE 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.

  • Page 18: Time Control

    INCREASE • 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.

  • Page 19: Equipment Control

    EQUIPMENT CONTROL • Turning on the Fan: At any time the system fan can run continuously by pressing the FAN button. Note that a Fan icon, “ continuously operating. To return the fan to the normal operating mode, press the FAN button again which will remove the icon from the display.
  • Page 20 completed unless an override temperature has been entered. Note that a Flame icon, “ 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.

  • Page 21: Optional Settings For Additional Thermostat Features

    Additional Thermostat Features The Model 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.
  • Page 22 No. 2 – Keypad Lock. If tampering with the thermostat is expected and unwanted, the keypad 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: •...
  • Page 23 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...
  • Page 24 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).
  • Page 25 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.
  • Page 26 Figure 4 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). Turn the thermostat power back on. CAUTION: DAMAGE, AVOID CONTACT WITH BLUE TEMPERATURE SENSOR ON BOTTOM RIGHT-HAND CORNER OF THERMOSTAT CIRCUIT BOARD.

  • Page 27: In Case Of Power Failure

    In Case Of Power Failure The Model 8552 thermostat does not require a battery. If the power goes out the letters “AC” appear on 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.

  • Page 28: Limited Warranty

    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...
  • Page 29 NOTES – 27 –...
  • Page 30 NOTES – 28 –...
  • Page 31 NOTES – 29 –...
  • Page 32 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...

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