Aprilaire 8446 is an electronic programmable thermostat, designed to control the heating and cooling systems according to programmed settings, and optimize comfort and energy efficiency. The thermostat has an easy to read, backlit display, and can be programmed for different week days and weekends. This thermostat requires two AAA batteries, has a battery life indicator, and will display a low battery warning.
Aprilaire 8446 is an electronic programmable thermostat, designed to control the heating and cooling systems according to programmed settings, and optimize comfort and energy efficiency. The thermostat has an easy to read, backlit display, and can be programmed for different week days and weekends. This thermostat requires two AAA batteries, has a battery life indicator, and will display a low battery warning.
8400 Series Thermostats
READ AND SAVE THESE INSTRUCTIONS
Owner’s Manual
Includes
Operating Instructions and
Warranty Information
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2
Thermostat features.............................................................................3
How to identify your thermostat’s model number ...................................................3
Controls & display overview
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TABLE OF CONTENTS
ABOUT YOUR NEW THERMOSTAT
OPERATION & PROGRAMMING
WARRANTY
Operation (all models)
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Programmable models only (8463, 8465, 8466)
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ABOUT YOUR NEW THERMOSTAT
THERMOSTAT FEATURES
Model 8444
Model 8446
Model 8448
Model 8463
Model 8465
Model 8466
All 8400 series thermostats
Programmable models only (8463, 8465, 8466)
®
HOW TO IDENTIFY YOUR THERMOSTAT’S
MODEL NUMBER
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CONTROLS & DISPLAY OVERVIEW – MODELS 8444, 8446, 8448
NOTE:
HEAT PUMP MODELS ONLY
ABOUT YOUR NEW THERMOSTAT – NON-PROGRAMMABLE MODELS
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CONTROLS & DISPLAY OVERVIEW – MODELS 8463, 8465, 8466
NOTE:
HEAT PUMP MODELS ONLY
ABOUT YOUR NEW THERMOSTAT – PROGRAMMABLE MODELS
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OPERATION – ALL MODELS
SELECT SYSTEM MODE
(OFF/HEAT/EM-HEAT/COOL/AUTO)
Press
AUTO:
OFF:
HEAT:
COOL:
EM-HEAT:
Press
CHANGE TEMPERATURE SETTING
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7
SELECT FAN SETTING (ON/AUTO/CIRC)
Press
ON:
AUTO:
CIRC:
OPERATION – ALL MODELS
BATTERY INSTALLATION AND RESET BUTTON
RESET SERVICE REMINDER MESSAGES
Press and hold
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SET TIME AND DAY
2. Press
3. Press
Press
Press
Press
Press
OPERATION & PROGRAMMING – PROGRAMMABLE MODELS ONLY (8463, 8465, 8466)
1. Press
UNDERSTANDING PROGRAM SCHEDULES
WAKE:
LEAVE:
RETURN:
SLEEP:
®
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Event Event designator Start time
Set temps
Heat Cool
1
2
3
OPERATION & PROGRAMMING – PROGRAMMABLE MODELS ONLY (8463, 8465, 8466)
UNDERSTANDING PROGRAM SCHEDULES (CONTINUED)
PROGRESSIVE RECOVERY
Example:
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CHANGING PROGRAM SCHEDULES
OPERATION & PROGRAMMING – PROGRAMMABLE MODELS ONLY (8463, 8465, 8466)
1. Press
2. Press
3. Press
Press
Press Press
Press
Press
7. Press
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11
PROGRAM SCHEDULE OVERRIDES (TEMPORARY, PERMANENT)
OPERATION & PROGRAMMING – PROGRAMMABLE MODELS ONLY (8463, 8465, 8466)
Temporary program override
Press
Permanent program override
Press
press
.
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www.aprilaire.com
61000651 7.09
B2204776B
ELECTRONIC THERMOSTAT FIVE YEAR LIMITED WARRANTY
®
WARRANTY REGISTRATION
Your Warranty Registration information will not be sold or shared outside of this company.
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Aprilaire 8446 is an electronic programmable thermostat, designed to control the heating and cooling systems according to programmed settings, and optimize comfort and energy efficiency. The thermostat has an easy to read, backlit display, and can be programmed for different week days and weekends. This thermostat requires two AAA batteries, has a battery life indicator, and will display a low battery warning.
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