
READ AND SAVE THESE INSTRUCTIONSIncludes Safety, Operating and MaintenanceInstructions and WarrantyTABLE OF CONTENTSPAGE Introduction...
- 8 -IV. ANNUAL MAINTENANCEFor best performance, we recommend that you replace thewater panel evaporator in your Aprilaire Humidifier annually.• Call
- 9 -Inspection and Service Instructions1. Disconnect electrical power to thefurnace and shut off water supply.2. Disconnect the water line at the inl
MODEL 448MAINTENANCE INSTRUCTIONSforAPRILAIRE HUMIDIFIER MODEL 448WARNING! 120 volts may cause serious injury from electrical shock. Disconnectpower
A. TO CLEAN RESERVOIR1. Hold bottom of reservoir (IT IS FILLED WITH WATER) and loosen retainerknob.Carefully lower reservoir, disengaging from metal f
- 12 -1. Note humidistat or control setting and turn dial to the “OFF” position.2. Turn off water supply.3. At the side of the unit opposite the airfl
- 13 -1.Note humidistat or control setting and turn dial to the “OFF” position.2. Turn off water supply.3. Press the tabs in the latches on the top an
456789123- 14 -1.Note humidistat or control setting and turn dial to the “OFF” position.2. Disconnect electrical power and turn off water supply.3. Un
- 15 -LIMITED WARRANTYYour Research Products Corporation Aprilaire®Humidifierunit is expressly warranted for one (1) year from date of instal-lation t
The Aprilaire®Indoor Air Comfort System is an integrated groupof air quality enhancement products designed to work with yourheating and cooling system
SERVICE AND WATER PANELREPLACEMENT RECORDDateDealer Name
WARNING! 120 volts may cause injury from electrical shock. Disconnect power and shut offwater supply before servicing.CAUTION! Sudden operation may ca
DP #10005406 Printed in U.S.A.P.O. BOX 1467 • MADISON, WI 53701-1467Products For Better Indoor Air Quality™
I. PRINCIPLE OF OPERATIONWith your purchase of a humidification system, you haveinvested in a humidifier that operates on the evaporative principle –
- 2 -There are some homes where drain facilities are not accessibleor available. For these situations, or where high water hardness is not a problem,
II. OPERATING INSTRUCTIONSThere are 2 possible modes of operation of your Aprilaire HumidifierControl and an explanation of both modes follows:Automat
Your Aprilaire Automatic Humidifier, is a high precision systemthat will accurately maintain the relative humidity in your home.For every 1º change in
- 5 -Manual Mode:(Automatic Mode – see pg 3)Your Aprilaire Humidifier Control is installed in the cold air return. Itis important to anticipate a drop
- 6 -To check the humidifier operation, set the knob to “test”, makesure that the water saddle valve is open and that there is electricityto the unit.
- 7 -Additional InformationBe sure to keep fireplace dampers closed when not in use.They provide an excellent escape route for heat, as well ashumidit
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