Aprilaire 8620 Owner's Manual

Model 8620 Thermostat with Event-Based™ Air Cleaning and Humidity or Ventilation ControlREAD AND SAVE THESE INSTRUCTIONSOwner’s Manual Includes Opera

18 19INDOOR AIR QUALITY FUNCTIONSHumidity Control Screen with only Dehumidification InstalledHUMIDITY CONTROL (CONTINUED)

20 21INDOOR AIR QUALITY FUNCTIONSPress [FRESH AIR] on the Home screen to enter the Fresh Air screen.If ventilation is installed, Fresh Air can operate

22 23PROGRAM SCHEDULE AND HOLDSPress [MENU] to enter the main menu. Press [SET CLK/DATE] to enter clock menu. SET TIME AND DATE Press or to set th

24 25Event designator Start timeSet temperatureFanHeat CoolWAKELEAVERETURNUNDERSTANDING PROGRAM SCHEDULES (CONTINUED)PROGRAM SCHEDULE AND HOLDS

26 27PROGRAM SCHEDULE AND HOLDSPress [Next], then [FAN] to set the fan mode of the first event.CHANGING PROGRAM SCHEDULES (CONTINUED)Press [Next] to a

28 29PROGRAM SCHEDULE AND HOLDSPERMANENT PROGRAM HOLDPress [HOLD] to permanently hold the temperature at its current setting while the schedule is run

30 31PROGRAM SCHEDULE AND HOLDSPress [Next], then or to set end date.Press [Next], then or to set end time.Press [DONE] to save and exit, Or [

32 33USER SYSTEM SETTINGS TABLESETUP MENUbold.User sy

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 www.aprilaire.com10009856 4.12B2205747B

2 3 WARNINGDo not use sharp instruments to press touch screen. Only use your fingertips.Thermostat features ...3Controls &

4 5CONTROLS & DISPLAY OVERVIEW – HOME SCREENABOUT YOUR NEW THERMOSTATCONTROLS & DISPLAY OVERVIEW – MAIN MENUABOUT YOUR NEW THERMOSTATNOTES:

6 7OPERATIONPress [MODE] to select: EM HEAT: (only for heat pumps with auxiliary heat) Thermostat controls auxiliary heat. Heat pump will not operate

8 9OPERATIONMAINTENANCE REMINDERSmaintenance

10 11INDOOR AIR QUALITY FUNCTIONSPress [AIR CLEANING] on the Home screen to enter the Air Cleaning screen.If installed, air cleaning can operate in fi

12 13INDOOR AIR QUALITY FUNCTIONSPress [HUMIDITY CONTROL] on the Home screen to enter the Humidity Control screen.The Humidity Control screen is used

14 15INDOOR AIR QUALITY FUNCTIONSHUMIDITY CONTROL (CONTINUED)In manual mode it is important to anticipate a drop in outdoor temperature and reduce the

16 17INDOOR AIR QUALITY FUNCTIONSHUMIDITY CONTROL (CONTINUED)If dehumidification is installed the thermostat can 