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Thermostat
OWNER'S MANUAL
8400 Series
Thermostats
Product Info &
Digital Manual
READ AND SAVE THESE INSTRUCTIONS

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Summary of Contents for Aprilaire 8400 Series

  • Page 1 Thermostat OWNER’S MANUAL 8400 Series Thermostats Product Info & Digital Manual READ AND SAVE THESE INSTRUCTIONS...
  • Page 2: Table Of Contents

    How to Identify Your Thermostat’s ALL 8400 SERIES THERMOSTATS Model Number� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3 Change Temperature Setting �...
  • Page 3 QUICK REFERENCE TO CONTROLS & DISPLAY PROGRAMMABLE MODELS (8463, 8465, 8466) CURRENT INDOOR TEMPERATURE CURRENT TIME OUTDOOR TEMPERATURE (OPTIONAL) NON-PROGRAMMABLE MODELS (8444, 8446, 8448) SYSTEM MODE TEMPERATURE SETTING SETTING CURRENT INDOOR TEMPERATURE OUTDOOR TEMPERATURE (OPTIONAL) EQUIPMENT STATUS FAN SETTING SYSTEM MODE TEMPERATURE SETTING SETTING SYSTEM MODE...
  • Page 4: Operation (All Models)

    OPERATION (ALL MODELS) SELECT FAN SETTING (ON/AUTO/CIRC) BATTERY INSTALLATION AND RESET BUTTON Press to select: The thermostat can either be AC or battery powered, or both. When wired to be AC powered, ON: Fan runs continuously� Use this mode for SELECT SYSTEM MODE CHANGE TEMPERATURE SETTING the batteries are optional and only provide...
  • Page 5: Operation & Programming (Programmable Models Only 8463, 8465, 8466)

    OPERATION & PROGRAMMING Set temps (PROGRAMMABLE MODELS ONLY 8463, 8465, 8466) Event Event designator Start time Heat Cool WAKE 6:00 am 70°F (21°C) 78°F (26°C) SET TIME AND DAY UNDERSTANDING PROGRAM SCHEDULES LEAVE 8:00 am 62°F (17°C) 85°F (29°C) RETURN 5:00 pm 70°F (21°C) 78°F (26°C)
  • Page 6: Changing Program Schedules

    CHANGING PROGRAM SCHEDULES PROGRAM SCHEDULE OVERRIDES (TEMPORARY, PERMANENT) 1. Press twice to enter program setting TEMPORARY PROGRAM OVERRIDE PERMANENT PROGRAM OVERRIDE mode� If the backlight is not already active the first button press will activate the backlight and two additional button presses are required� Start time of the WAKE event is flashing.
  • Page 7: Limited Warranty

    LIMITED WARRANTY Your AprilAire® Thermostat is expressly warranted for five (5) years from date of installation to be free from defects in materials or workmanship. Any modifications to the product voids the warranty. The exclusive obligation of AprilAire under this warranty shall be to supply, without charge, a replacement for any thermostat which is found to be defective within such five (5) year period and which is returned not later than thirty (30) days after said five (5) year period by you to either your original supplier or to AprilAire, Madison, Wisconsin 53701, together with the installation date of the thermostat.

This manual is also suitable for:

844484468448846384658466

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