Aprilaire 112 Owner's Manual
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Aprilaire 112 Owner's Manual

Aprilaire owner's manual humidifiers 768, 760, 568, 560, 558, 550, 448, 445, 360, 350, 110, 112, 220, 224, 440
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READ AND SAVE THESE INSTRUCTIONS
OWNER'S MANUAL
FOR MODELS 768, 760, 568, 560, 558, 550,
448, 445, 360, 350, 110, 112, 220, 224, & 440
Includes Safety, Operating and Maintenance

TABLE OF CONTENTS

Introduction ................................................Inside Front Cover
Principle of Operation ............................................................1
•Automatic Humidifier Control............................................3
•Manual Humidistat ............................................................5
Effect of Water Characteristics ..............................................6
Annual Maintenance ..............................................................7
Annual Summer Shutdown ....................................................7
Periodic Preventative Maintenance .......................................8
Models 558 & 550 ..............................................................9
Models 568 & 560 ..............................................................9
Models 768 & 760 ............................................................10
Model 440 ........................................................................11
Models 448 & 445 ............................................................11
Reservoir Pump Sections .............................................12
Models 350 & 360 ............................................................13
Models 110 & 112 ............................................................14
Models 220 & 224 ............................................................15
Limited Warranty..................................................................16
Replacement Record ............................................Back Cover
HUMIDIFIERS
The Best Cure For Dryness
Instructions and Warranty
®
®
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Summary of Contents for Aprilaire 112

  • Page 1: Table Of Contents

    READ AND SAVE THESE INSTRUCTIONS The Best Cure For Dryness OWNER’S MANUAL FOR MODELS 768, 760, 568, 560, 558, 550, 448, 445, 360, 350, 110, 112, 220, 224, & 440 Includes Safety, Operating and Maintenance Instructions and Warranty TABLE OF CONTENTS Introduction ...Inside Front Cover...

  • Page 2: Introduction

    However, if you still have difficulty in obtaining a replacement Water Panel evaporator, use the dealer locator in our web site (www.aprilaire.com) or look in the Yellow Pages under Humidifying Apparatus or Heating & Air Conditioning Contractors.

  • Page 3: Principle Of Operation

    Aprilaire provides all of these advantages. Here, briefly, is the method: The Aprilaire Humidifier (except the Models 350 and 360) is installed to operate in conjunction with the furnace blower motor. When the humidistat or Automatic Humidifier Control calls for humidity and the blower motor is operating, water flows to the distribution pan located at the top of the unit.
  • Page 4 Trouble- free performance and minimum maintenance are assured by the design features of the Aprilaire Humidifier. All unit housing parts that come in contact with water are non-metal and will never rust or corrode. Neither heat nor water will affect them under normal operating conditions.

  • Page 5: Operating Instructions

    Make note of the dial setting in the event you temporarily move the knob when performing maintenance of the Aprilaire Humidifier. Solution Reduce the setting on the control dial by 1 increment. Increase the setting on the control dial by 1 increment.
  • Page 6 Your Aprilaire Automatic Humidifier, is a high precision system that will accurately maintain the relative humidity in your home. For every 1º change in outdoor temperature, the control will automatically adjust the indoor relative humidity (RH) by If you would like to determine the RH in your home, follow these steps: 1.

  • Page 7: Manual Humidistat

    Manual Humidistat: (Automatic Humidifier Control – see pg 3) Your new Aprilaire Humidifier is controlled by a humidistat installed either in the living area or in the cold air return. It is important to anticipate a drop in outdoor temperature and reduce the setting accordingly to avoid excessive condensation.

  • Page 8: Effect Of Water Characteristics

    Generally, with all models except the 350 and 360 Aprilaire Humidifiers, the furnace blower motor must be operating for the Aprilaire Humidifier to function.

  • Page 9: Annual Maintenance

    Water Panel evaporator is usually changed once a year. In the Models 448 and 445 Aprilaire Humidifiers, these solids will build up on the evaporator surface, in the reservoir and pump section. This is why proper maintenance is important and necessary.

  • Page 10: Periodic Preventative Maintenance

    VI. PERIODIC PREVENTATIVE MAINTENANCE NOTE: Periodic inspection and preventive maintenance of your total heating system is important for efficient and safe operation. Your heating contractor should include humidifier service at the same time. All models, except No’s. 448 and 445, are equipped with an in-line water strainer and orifice as shown below.

  • Page 11: Maintenance Instructions

    MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODELS 558-550-568-560 CAUTION! Sudden operation may cause personal injury or property damage. Turn humidistat or control to “off” or lowest setting before servicing. 1. Note humidistat or control setting and turn dial to the “OFF” position.

  • Page 12: Models 768 & 760

    MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODELS 768-760 WARNING! 120 volts may cause serious injury from electrical shock. Disconnect power and shut off water supply before servicing. 1. Front Cover 2. Base 3. Evaporative Assembly 4. Distribution Tray 5. ”V” Notches 6. Water Panel 7.

  • Page 13: Model 440

    MAINTENANCE INSTRUCTIONS for APRILAIRE HUMIDIFIER MODEL 440 CAUTION! Sudden operation may cause personal injury or property damage. Turn humidistat to “off” or lowest setting before servicing. 1. Note humidistat setting and turn dial to the “Off” position. 2. Remove two aluminum knobs (1), swing up and remove top cover (2) from humidifier.

  • Page 14: Reservoir Pump Sections

    MAINTENANCE INSTRUCTIONS RESERVOIR PUMP SECTIONS WARNING! 120 volts may cause serious injury from electrical shock. Disconnect power and shut off water supply before servicing. IMPORTANT: Clean and refill reservoir, hose, pump and float every 30 days during heating season. A. TO CLEAN RESERVOIR 1.

  • Page 15: Models 350 & 360

    MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODELS 350-360 WARNING! 120 volts may cause serious injury from electrical shock. Disconnect power and shut off water supply before servicing. 1. Disconnect electrical power and turn off water supply. 2. Remove screws of the inlet grille (1). The grille can now be removed from the metal housing (8).

  • Page 16: Models 110 & 112

    Inspect Water Panel evaporator and replace with a new Water Panel evaporator (Stock No. 10 for Model 110 and Stock No. 12 for Model 112), with colored spot up. 8. Remove the plastic drain hose from the bottom of the unit and bend and flex it to loosen the internal calcium deposits.

  • Page 17: Models 220 & 224

    MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODELS 220-224 CAUTION! Sudden operation may cause personal injury or property damage. Turn humidistat to “off” or lowest setting before servicing. 1. Turn off water supply and turn down humidistat. 2. Remove three “Z” clips (1) that hold top half of unit to furnace plenum.

  • Page 18: Limited Warranty

    LIMITED WARRANTY Your Research Products Corporation Aprilaire unit is expressly warranted for one (1) year from date of instal- lation to be free from defects except, however, for the disposable water panel which will have to be replaced from time to time depending upon the amount of use.
  • Page 19 For the best in indoor air quality, ask your heating and cooling contractor about these fine Aprilaire products, or visit us www.aprilaire.com to solve your Indoor Air Comfort needs.

  • Page 20: Replacement Record

    SERVICE AND WATER PANEL REPLACEMENT RECORD Date Dealer Name P.O. BOX 1467 • MADISON, WI 53701-1467 Products For Better Indoor Air Quality ™ DP #10003882 5.9.00 Printed in U.S.A.

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