Aprilaire About your new thermostat, Thermostat Features All 8400 series thermostats

Models: 8400

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About your new thermostat

Thermostat Features

All 8400 series thermostats

Large, clear, backlit display is easy to read – even in the dark

Displays room temperature, temperature setting, and optional outdoor temperature

Front battery door access for fast, easy replacement

Built in compressor protection

Circulation fan mode for air cleaning

Air filter, humidifier, dehumidifier, and HVAC service indicators

Auto backlight (activated with first button press)

Programmable models only (8463, 8465, 8466)

Separately programmable weekday/weekend schedules

Easy to use temperature control can override program schedule at any time

EnergyStar® compliant to reduce your heating/cooling expenses

Progressive recovery

How to identify your thermostat’s model number

To locate the model number, remove the battery cover.

Model

Number

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 5/2 Day Programmable Model 8465 Heat Pump 5/2 Day Programmable

Model 8466 Heat/Cool or Heat Pump Multi-Stage

5/2 Day Programmable

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61000651B 8400 Tstat Owners.indd 3

7/23/09 10:43:02 AM

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Aprilaire owner manual About your new thermostat, Thermostat Features All 8400 series thermostats