Aprilaire 224 User Manuals

Table of Contents

• 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