ALL 8400 SERIES THERMOSTATS
PROGRAMMABLE MODELS ONLY (8463, 8465, 8466)
HOW TO IDENTIFY YOUR THERMOSTAT’S MODEL NUMBER
To locate the model number, remove the battery cover.
Model 8444 | Heat/Cool Non-Programmable |
Model 8446 | Heat Pump Non-Programmable |
Model 8448 | Heat/Cool or Heat Pump Multi-Stage Non-Programmable |
Model 8463 | Heat/Cool Programmable |
Model 8465 | Heat Pump Programmable |
Model 8466 | Heat/Cool or Heat Pump Multi-Stage Programmable |
NON-PROGRAMMABLE MODELS (8444, 8446, 8448)
NOTE: BACKLIGHT IS ACTIVATED WITH FIRST BUTTON PRESS AND AUTOMATICALLY TURNS OFF.
PROGRAMMABLE MODELS (8463, 8465, 8466)
NOTE: BACKLIGHT IS ACTIVATED WITH FIRST BUTTON PRESS AND AUTOMATICALLY TURNS OFF.
Press
Press
Press and hold
BATTERY INSTALLATION AND RESET BUTTON
SET TIME AND DAY
The daily schedule is split into four sections
WAKE | 6:00 am-8:00 am |
The temperature you would prefer to wake up to, until you leave for the day. |
LEAVE | 8:00 am-5:00 pm |
The temperature when you are away from the house during the day. |
RETURN | 5:00 am-10:00 pm |
The temperature you would prefer to return to, until bedtime. |
SLEEP | 10:00 pm-6:00 am |
The temperature you would prefer during the night. |
The times shown are the defaults. The start time and temperature of each section can be changed to fit your schedule.
Event | Event designator | Start time | Set temps | |
Heat | Cool | |||
1 | WAKE | 6:00 am | 70°F (21°C) | 78°F (26°C) |
2 | LEAVE | 8:00 am | 62°F (17°C) | 85°F (29°C) |
3 | RETURN | 5:00 pm | 70°F (21°C) | 78°F (26°C) |
4 | SLEEP | 10:00 pm | 62°F (17°C) | 82°F (28°C) |
The Progressive Recovery feature, if enabled by the installer, allows the thermostat to activate the heating and cooling equipment PRIOR to a scheduled event in order to reach the desired temperature at the start of that scheduled event. When a heating or cooling call is active for Progressive Recovery, the current event schedule will flash.
EXAMPLE: Set the WAKE time to 6:00 am, and the temperature to 70°. The heat will come on before 6:00 am, so the temperature is 70° by the time you wake at 6:00 am.
The thermostat will save changes and return to Normal mode if no key is pressed in 20 seconds.
Press
To cancel the temporary override, adjust the temperature setting back to the programmed temperature, or press
Press
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 WARRANTY SHALL NOT OBLIGATE APRILAIRE FOR ANY LABOR COSTS AND SHALL NOT APPLY TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY YOUR INSTALLER AS CONTRASTED TO DEFECTS IN THE THERMOSTAT ITSELF. IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL BE LIMITED IN DURATION TO THE AFORESAID FIVE YEAR PERIOD. THE APRILAIRE 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 WARRANTY IS VOID IF DEFECTS(S) RESULT FROM FAILURE TO HAVE THIS THERMOSTAT INSTALLED BY A QUALIFIED HEATING AND AIR CONDITIONING CONTRACTOR. IF THE LIMITED WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CONTRACTOR, ALL DISCLAIMERS OF IMPLIED WARRANTIES SHALL BE EFFECTIVE UPON INSTALLATION.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so the above exclusion or limitations may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from state to state. This equipment if installed in strict accordance with the manufacturer’s instructions, complies with the limits for a Class B computing device pursuant to Subpart J of Part 15 of FCC Rules.
WARRANTY REGISTRATION
Visit us online at aprilaire.com to register your AprilAire product. If you do not have online access, please mail a postcard with your name, address, phone number, email address, product purchased, model number, date of purchase, and dealer name and address to: AprilAire, P.O. Box 1467, Madison, WI 53701.
Your warranty registration information will not be sold or shared outside of this company.
B2204776E • 61000651 • 6.22
© 2022 AprilAire
aprilaire.com
800.334.6011
AprilAire reserves the right to change specifications without notice.
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