Aprilaire 8555 manual

O w n e r’ s M an u al MODEL 8555 7 Day Programmable Thermostat EL E CTR O NIC THERM O S T A T ® 110-793B 7/11/01 3:29 PM Page 1[...]

OWNER’S MANUAL – T ABLE OF CONTENTS E NERGY S TA R ® Program Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Setting Or Changing The Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

– 1 – E NERGY S TA R ® 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[...]

– 2 – As part of the E NERGY S TA R 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 THERMOST A T DESIRED EVENT SYMBOL TEMPERA TURE Mon T ue Wed Thu Fri Sat Sun SET[...]

– 3 – IMPORT ANT : READ ALL INSTRUCTIONS THOROUGHL Y 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 INCREA[...]

– 4 – 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 INCRE[...]

– 5 – 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. Y our Aprilaire Thermostat will allow a maximum of 4 time schedules per day . Each time schedule is known as an “ event. ” The Morning even[...]

– 6 – T o activate the progressive recovery mode simultaneously press the PROGRAM and FA N 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 [...]

– 7 – PROGRAM SCHEDULE TIME SCHEDULE THERMOST A T DESIRED EVENT SYMBOL TEMPERA TURE Mon T ue Wed Thu Fri Sat Sun SETTING Morning Heat = Cool = Day Heat = Cool = Evening Heat = Cool = Night 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 ha[...]

Setting Or Changing Program T imes 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 display . Press the DECREASE button or INCREASE button to access the day of the week you wish to start programming or to change the existing program. Step 2: Pr[...]

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 ” o[...]

Setting Or Changing Heating T emperatures Step 1: Press and release the MODE button until the word “ Heat ” and the Morning “ ” event symbol appear on the display . Step 2: T o 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: P[...]

Step 4: Repeat steps 2 and 3 for the Day “ ” , Evening “ ”, and Night “ ” events. NOTE: If thermostat is set for 2 events per day , only the Day “ ” and Night “ ” events can be programmed. Setting Or Changing Cooling T emperatures NOTE: Cooling temperatures must be set at least 2 degrees higher than heating temperatures. (Exampl[...]

Step 1: Press and release the MODE button until the word “ COOL ” and the “ ” cooling symbol appear on display . Step 2: T o 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 button or INCREASE button to set t[...]

Reviewing Programmed T ime Schedules And T emperature 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 to begin review. Continue pressing the PROGRAM button to review the time schedules and temperature settings for each desired event. T o [...]

– 14 – For Best Performance The Aprilaire Model 8555 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 no[...]

– 15 – Aprilaire Model 8555 7 Day Programmable Thermostat 110-793B 7/11/01 3:29 PM Page 17[...]

TEMPERA TURE CONTROL • Reading the Actual Room T emperature: The Model 8555 normally displays the room temperature, not the set-point temperature. • Check the Set-Point T emperature: Press and release the DECREASE button or INCREASE button. The thermostat will display the programmed set-point temperature and a thermometer for 5 seconds before a[...]

– 17 – • Returning 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 ne[...]

– 18 – EQUIPMENT CONTROL • T urning on 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. T o return the fan to the normal operating mode, press the FA N button again which will remove th[...]

– 19 – display , which flickers when the heat pump is running. Y our thermostat will automatically turn on and off any additional stages of heating as required. • Selecting Emergency Heat Mode: Press the MODE button until “ E ht ” appears on the display. In this mode the backup heat source (other than the heat pump) will maintain temperat[...]

programmed, the optional outdoor temperature sensor will work and the fan will turn on if the FAN button is pressed. T o avoid frozen water pipes, DO NOT use the OFF mode for long periods of time during sub-freezing temperatures. NOTE: After selecting a new mode, the thermostat initiates a delay of up to 4 minutes to protect the heating and cooling[...]

– 21 – No. 2 – Smart Fan. The thermostat is factory preset with the Smart Fan option off. This allows the system fan to operate normally with the heating and cooling equipment. If the Smart Fan option is turned on by placing the DIP switch in the ON position when the Fan button on the thermostat is pushed (indicated by the fan icon on the dis[...]

– 22 – • The DECREASE button or INCREASE button will temporarily change the set point a maximum of ±6°F (±3°C) for a period of 3 hours, 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[...]

– 23 – thermostat panel, not on the display). If your heating/cooling system has the required controls for automatically determining when to change the air filter , this feature is beneficial. Consult your contractor for further information. No. 8 – Free LED 2 with LCD Wrench Symbol. When moved to the ON position, this switch turns on a Wrenc[...]

T o 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[...]

– 25 – Figure 2 Figure 3 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) . 1[...]

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 p[...]

Figure 4 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) T urn the thermostat power back on. CAUTION: TO PREVENT DAMAGE, A VOID CONT ACT WITH BLUE TEMPERA TURE SENSOR ON BOTTOM RIGHT -HAND CORNER OF THERMOST A T CIRCUIT BOARD. – 27 – 110-79[...]

– 28 – Setting High And Low Balance Points If your system is installed with the required Model 8041 Remote Outdoor Sensor , the high and low balance points should have been properly set by your contractor . Heat pumps operate by extracting energy out of the outdoor air and transferring it to the indoor air . This process is efficient over a wid[...]

– 29 – Using The A vailable LED Indicators This model is equipped with 3 LED indicator lights. These LED s are located along the top edge of the thermostat panel (not on the display) and look like small, clear edges protruding out of the top of the thermostat. The center LED is factory wired and will glow red when the backup heat source is bein[...]

– 30 – In Case Of Power Failure The Model 8555 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 1 hour after the power goes out. During the period that the power is off[...]

– 31 – Limited W arranty Y our 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 [...]

– 32 – Notes: 110-793B 7/11/01 3:29 PM Page 34[...]

– 33 – Notes: 110-793B 7/11/01 3:29 PM Page 35[...]

B2202157 REV . 04/01 1 10-793B P .O. BOX 1467 • MADISON, WI 53701-1467 Products For Better Indoor Air Quality ™ 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 ,[...]