Aprilaire 300 Installation Instructions Manual
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Aprilaire 300 Installation Instructions Manual

Aprilaire 300 Installation Instructions Manual

Self-contained whole-house humidifier
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Humidifier
SAFETY INSTRUCTIONS                                              2
LOCATION                                                            3
Unit                                                                3
Discharge Grille                                                  3
INSTALLATION                                                       3
Location                                                          3
Sound                                                             3
Mounting                                                         3

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INSTALLATION INSTRUCTIONS
Model 300
Self-Contained Whole-House Humidifier
AIR DISTRIBUTION AND EVAPORATIVE CAPACITY                  5
PLUMBING                                                           6
WIRING                                                              7
Power                                                             7
Humidity Control                                                 7
CHECK UNIT OPERATION                                            7
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Summary of Contents for Aprilaire 300

  • Page 1: Table Of Contents

    INSTALLATION INSTRUCTIONS Model 300 Humidifier Self-Contained Whole-House Humidifier TABLE OF CONTENTS SAFETY INSTRUCTIONS                                              2...

  • Page 2: Safety Instructions

    • Avoid obstructions such as plumbing or electrical wires EQUIPMENT DAMAGE MAY OCCUR IF INSTALLATION when cutting into walls. INSTRUCTIONS ARE NOT FOLLOWED. • Connect Model 300 Series power cord only to 120 VAC, 60Hz. Follow all state and local codes regarding electrical CAUTION wiring.

  • Page 3: Location

    LOCATION Locate the unit close to a drain and where temperatures do not The Model 300 can be located in a utility closet, laundry room, reach freezing, such as a laundry room, basement, utility closet, basement, or any space where the unit can be mounted to etc The unit is rated for 70°F intake air;...
  • Page 4 To install parallel to joist, attach the angle supports to the If this is a finished ceiling, or you wish to install the humidifier middle holes in the housing with the #8 x 1/2” screws provided. perpendicular to the joists, attach the angle supports to the If distance between joists is less than 14.5”, top mounting holes top holes in the housing.

  • Page 5: Air Distribution And Evaporative Capacity

    AIR DISTRIBUTION AND EVAPORATIVE CAPACITY Check all state and local codes and proper design regarding The Model 300 has the capacity to deliver 250 CFM at air distribution systems 01” wc, equivalent to an effective duct length of 80 feet The...

  • Page 6: Plumbing

    140°F, but they often will not be activated by the Model will take about 10 minutes 300 due to its low flow rate.) Use 1/2” ID plastic hose for the drain Be sure that the water heater has sufficient capacity and...

  • Page 7: Wiring

    WIRING POWER FIGURE 6: WIRING The Model 300 is prewired internally and equipped with a 120 VAC cord and plug A. POWER CORD D. CAPACITOR B. HUMIDISTAT E. FAN C. PCB ASSEMBLY F. SOLENOID HUMIDITY CONTROL The AprilAire Model 65 Humidifier Control is designed for 24 VAC to control humidification equipment.
  • Page 8 B2209189D • 10015433 • 08.23 © 2023 AprilAire | aprilairepartners.com | 800.334.6011 AprilAire reserves the right to change specifications without notice.

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