Aprilaire 448 owner manual Aprilaire Zone Control Systems

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®

THE BEST IN INDOOR AIR COMFORT

The Aprilaire® Indoor Air Comfort System is an integrated group of air quality enhancement products designed to work with your heating and cooling system to make your home more comfortable. For the best in indoor air quality, ask your heating and cooling contractor about these fine Aprilaire products, or visit us at www.aprilaire.com to solve your Indoor Air Comfort needs.

Aprilaire®

Aprilaire®

Automatic Humidifiers

High Efficiency Air Cleaners

The Best Cure For Dryness®

Nobody Makes Clean Air Easier®

The world’s first computer-equipped,

Delivers the cleanest, healthiest air ever

completely automatic humidifier.

available from a whole-house air cleaner.

Aprilaire®

Zone Control Systems

Custom Comfort Throughout Your Home®

The most reliable way to achieve temperature

control in every area of your home.

Aprilaire®

Aprilaire®

Fresh Air Exchangers

Electronic Thermostats

Only The Freshest Homes

Energy Efficiency Never

Have April Air

Looked So Good

Your best value for a constant,

Ultra-thin, easy-to-use digital,

controlled supply of fresh air with

programmable, and communicating

energy-recovery.

controls featuring pinpoint accuracy.

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Contents Automatic Humidifier Introduction Principle of Operation Page Automatic Mode Manual Mode-see pg Operation GuideFigure a Outdoor Temperature ºF Setting Dial % Relative Humidity GuideFigure B III. Effect of Water Characteristics IV. Annual Maintenance Inspection and Service Instructions Model ForMaintenance Instructions For Models Reservoir Pump Sections Models Model Model Limited Warranty Aprilaire Zone Control Systems Aprilaire Fresh Air Exchangers Electronic ThermostatsService and Water Panel Replacement Record DP #10005406