8400 Series Thermostats
READ AND SAVE THESE INSTRUCTIONS
Owner’s Manual
Includes
Operating Instructions and
Warranty Information
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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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...............................................................7
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Programmable models only (8463, 8465, 8466)
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...........................................................................9
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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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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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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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