AprilAire Model 60 Automatic Digital Whole-House Humidifier Control Instruction Manual

Introduction

The AprilAire Model 60 Automatic Digital Humidifier Control is designed to work with your AprilAire Whole-House Humidifier to maintain optimal relative humidity levels within your home. This control features both automatic and manual operating modes, a digital display, and an outdoor temperature sensor for precise humidity management. It is engineered for compatibility with specific AprilAire humidifier models and provides clear indicators for operation and maintenance needs.

Key Features

• Automatic Mode: Automatically adjusts indoor relative humidity (RH) based on outdoor temperature changes, eliminating the need for manual adjustments.
• Manual Mode: Allows users to set their preferred humidity level. A digital 'M' indicates manual operation.
• Digital Display: A large, blue LED backlit LCD shows the current indoor RH percentage and the set point during adjustment.
• Outdoor Temperature Sensor: Included for accurate automatic mode operation, adjusting indoor RH by 1% for every 2°F change in outdoor temperature.
• Blower Activation: Integrated function to maximize humidifier run time by engaging the HVAC fan when humidification is needed, even without a call for heat.
• Indicator Lights: Provides visual feedback for 'Humidifier On', 'Change Water Panel', and 'Call Dealer for Service'.
• Accuracy: Fully electronic control accurate to within +/-3% RH.

Compatibility

The AprilAire Model 60 Humidifier Control is compatible with AprilAire Whole-House Humidifiers in the following series:

• AprilAire Series 400
• AprilAire Series 500
• AprilAire Series 600
• AprilAire Series 700 (including Gray or Almond Housing models)

Note: This control is not compatible with the AprilAire Model 800 Steam Humidifier.

Image: The AprilAire Model 60 Humidifier Control is compatible with various AprilAire whole-house humidifier models, including the 400, 500, 600, 700, and 720 series.

Included Components

The AprilAire Model 60 package typically includes the following items:

• AprilAire Model 60 Humidifier Control
• Outdoor Temperature Sensor
• Manual Mode Label
• Gasket
• Installation Manual

Image: The components included in the AprilAire Model 60 package, featuring the control unit, outdoor temperature sensor, manual mode label, and the installation manual.

Setup and Installation

Installation of the AprilAire Model 60 Humidifier Control requires basic knowledge of low voltage wiring and HVAC systems. If you are not comfortable with these procedures, it is recommended to consult a qualified HVAC technician.

Mounting Location

• The Humidifier Control must be mounted on the return air duct of your HVAC system.
• Ensure the control is positioned at least 6 inches upstream of any of the following: the humidifier unit, humidifier bypass ductwork (if applicable), and/or fresh air intake ductwork (if applicable). This placement is critical for accurate humidity sensing.

Duct Preparation

• A sheet metal duct hole opening of 3/4 inches in diameter is required for the RH sensor.
• Use the provided gasket to help reduce air leakage between the duct and the control housing, ensuring accurate readings.

Electrical Wiring

• The Model 60 is a low voltage 24VAC, 9-wire control. Refer to the detailed wiring diagrams provided in the included Installation Manual for specific connections.
• Wiring typically involves connecting to the HVAC system's R (24VAC power), C (Common), and G (Fan) terminals, as well as connections to the humidifier's solenoid valve.
• In some installations, an external 24VAC transformer (not included) may be required to power the humidifier's solenoid if the furnace board does not provide continuous 24V power or a dedicated circuit.
• The outdoor temperature sensor connects directly to the control unit.

Important: Always turn off power to your HVAC system at the circuit breaker before performing any wiring or installation procedures.

Operating Instructions

The AprilAire Model 60 offers both automatic and manual modes for controlling your home's humidity.

Image: Front view of the AprilAire Model 60 control, showing the digital display, control dial, and indicator lights.

Automatic Mode

• When the control is set to Automatic Mode (indicated by the dial position), it uses the outdoor temperature sensor to automatically adjust the indoor relative humidity.
• The control will adjust the indoor RH by 1% for every 2°F change in outdoor temperature. This ensures optimal humidity levels without constant manual intervention.
• In Automatic Mode, there is generally no need to turn the dial to 'OFF' during warmer seasons, as the control will automatically reduce humidification as outdoor temperatures rise.

Manual Mode

• If you prefer to manually control the humidity level, rotate the dial to your desired RH percentage.
• When in Manual Mode, the digital display will show a letter 'M' as a reminder.

Setting the Humidity Level

• Use the central dial to select your desired humidity setting. The digital display will show the set point as you adjust it.
• The dial typically ranges from 'OFF' to 'MORE' with numerical settings in between.

Blower Activation Function

• The 'BLOWER ACTIVATION' switch (OFF/ON) allows you to control whether the humidifier can activate the HVAC fan independently.
• When set to 'ON', this function maximizes humidifier run time by bringing on the HVAC fan even when there is no call for heat, ensuring consistent humidification.

Maintenance

Regular maintenance of your AprilAire humidifier is essential for optimal performance. The Model 60 control assists with this by providing timely reminders.

Change Water Panel Indicator

• The 'Change Water Panel' LED indicator light will illuminate to remind you when it's time to replace the water panel in your AprilAire Whole-House Humidifier.
• The frequency of this reminder can be adjusted based on your heating season length or if you have particularly hard water, which may require more frequent changes. Refer to your humidifier's manual for specific water panel replacement instructions.

Image: Close-up of the AprilAire Model 60 control's indicator lights, showing 'Call Dealer for Service', 'Change Water Panel', and 'Humidifier On' status.

Troubleshooting

The AprilAire Model 60 Humidifier Control provides visual indicators to help diagnose common issues.

• 'Humidifier On' Indicator: If this light is not illuminated when humidification is expected, check the control settings, power supply to the humidifier, and ensure the HVAC fan is operating.
• 'Change Water Panel' Indicator: This light signals that the humidifier's water panel needs replacement. Replace the water panel according to your humidifier's instructions and reset the indicator if necessary.
• 'Call Dealer for Service' Indicator: If this light illuminates, it indicates a potential issue requiring professional attention. Contact a qualified HVAC technician or AprilAire customer support.
• No Display/No Power: Verify that the control is receiving 24VAC power. Check wiring connections and circuit breakers.
• Incorrect Humidity Readings: Ensure the outdoor temperature sensor is properly installed and functioning. Verify the control is mounted correctly and not affected by localized air currents.

For complex issues or if troubleshooting steps do not resolve the problem, contact AprilAire customer support or a certified HVAC professional.

Specifications

Warranty Information

The AprilAire Model 60 Automatic Digital Humidifier Control comes with a 5-Year Manufacturer's Warranty. For specific terms, conditions, and to register your product, please refer to the warranty documentation included with your purchase or visit the official AprilAire website.

Support

For further assistance, technical support, or to locate a certified AprilAire professional in your area, please visit the official AprilAire website or contact their customer service department. When contacting support, please have your product model number (Model 60) and any relevant purchase information available.