Model 60 shown. Automatic Digital Humidifier Control Model 60 & 62 Safety and Installation Instructions READ COMPLETE INSTALLATION INSTRUCTIONS AND TEMPLATE BEFORE STARTING INSTALLATION. WARNING ATTENTION INSTALLER: This product must be installed by a qualified heating and air conditioning contractor. Failure to do so could result in serious injury from electrical shock.
WARNING Hazardous Voltage can cause serious injury from electric shock. Disconnect electrical power to the furnace and humidifier before starting installation. Sharp edges can cut. Wear gloves and use care when cutting plenum openings and handling ductwork. CAUTION Condensation damage may occur. TABLE OF CONTENTS Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STEP 2: Disassemble the Humidifier Control STEP 3: Set the Change Water Panel Indicator Remove the knob. Remove the cover by pulling at the bottom and swinging it out and upward. See Figure B to become familiar with the terminal positions. Figures K and L show complete installation wiring diagrams for Aprilaire Humidifiers. This setting will control when the indicator light turns on, reminding you to change your water panel.
The Model 62 shipped with the Model 800 Steam Humidifier is factory set to “OFF”. The Model 62 does not have the “Change Water Panel” light on the Control. The Canister Change indicator for the Model 800 is on the humidifier. STEP 4: Blower Activation Feature Explanation Set the Blower Activation switch to “ON”, see Figure J, to allow the Humidifier Control to activate the furnace fan for additional humidification.
CAUTION Controller damage or malfunction may occur if installation instructions are not followed. Install humidifier control on return plenum only. Install humidifier control upstream of the bypass outlet or steam dispersion tube. Do not install humidifier control facing downward. DUCT (SHEET METAL) MOUNT: After location for Control is selected, drill a 3/4 inch hole for the RH sensor (the RH sensor extends from the back of the Humidifier Control).
STEP 2: Determine Location for and Mount Outdoor Temperature Sensor Figure E – Fiber Board Duct Mount The location of the Outdoor Temperature Sensor must meet these three requirements: CONTROL BOARD 1. Must be mounted on North, East or West side of house out of direct sunlight. COVER GASKET 2. Must be at least 3 feet from all exhaust vents. SCREW (x2) 3. Must be above expected snow line (see Figure F). KNOB Incorrect humidity levels will result if these requirements are not met.
STEP 4: Route the Wire from Control to Sensor STEP 3: Alternate Location for Outdoor Temperature Sensor When mounting the Outdoor Temperature Sensor in an intake air duct the turn the Blower Activation switch (see Figure J) to “OFF”. If left in the “ON” position, over humidification and condensation damage could occur. The Sensor can be mounted with a #8 galvanized screw in the center of either: • PVC fresh air intake pipe for the HVAC system. OR • A fresh air intake duct.
STEP 6: Model 60 Wiring for Model 400, 500, 600, and 700* Series (Gray Housing) Humidifiers – See Figure K Installing the Humidifier Control for Manual Operation If it is not feasible to install the Outdoor Temperature Sensor, the Humidifier Control can be operated in Manual Mode. 1. Position the Mode Switch in the “MAN” position. Manual indicator “M” will be displayed. WARNING 120 volts may cause serious injury from electrical shock.
• Wire “W” on the Model 60 to “W” on the furnace terminal strip. • Replace cover and knob. STEP 7: Model 62 wiring for Model 800 Series Steam Humidifier and Model 60 Wiring for Model 700* Series (Almond Housing) Humidifiers – See Figure L Figure K – Model 60 Wiring for Model 400, 500, 600 and 700* Series (Gray Housing) Humidifiers WARNING 120/240 volts may cause serious injury from electrical shock. Disconnect electrical power to the furnace and humidifier before starting installation.
SYSTEM CHECKOUT Figure L – Model 62 wiring for Model 800 Series Steam Humidifier and Model 60 Wiring for Model 700* Series (Almond Housing) Humidifiers 1. Replace the cover by snapping it into the Humidifier Control base. Also replace the knob onto the Control. 2. Turn Blower Activation switch to OFF 3. Restore power to the HVAC system. ADHC TERMINAL STRIP POWER R C INPUTS A B ODT W OUTPUTS G H 4. Activate the HVAC system or heat pump (Fan or Heat).
Blower Activation Test • Deactivate HVAC system or heat pump. • Turn knob to OFF. • Set switch to Blower Activation ON. • Turn the knob to Test/Reset. The Humidifier On light will illuminate. After 5 seconds, the green “Humidifier On” light will blink, indicating a system reset. • If the Humidifier Control and humidifier are set up properly, the solenoid valve should click and the HVAC blower should activate.
TABLE 1 TROUBLESHOOTING PROCEDURE (CONTINUED) 3. Rotate Humidifier Control knob to the “Test/Reset” position. After 5 seconds, the green “Humidifier On” light will blink, resetting the error. If E3 returns, replace the Humidifier Control. Outdoor Temperature (°F) Resistance (kΩ) ±10 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 231.8 163.4 117.3 84.8 62.2 46.1 34.4 26.1 19.9 15.3 11.9 9.3 7.3 5.8 Manual Mode (switch in “MAN” position) 1.
SYMPTOM Humidifier does not operate in “Test/Reset” mode. TROUBLESHOOTING PROCEDURE • Check wiring diagrams for correct Humidifier Control installation. 1. For Model 700 Series Humidifiers with gray color housings ensure that wiring diagram in Figure K is used. 2. For Model 700 Series Humidifiers with almond color housings ensure that wiring diagram in Figure L is used. • Make sure that the blower is operating and the HVAC system is calling for heat.
SYMPTOM SYMPTOM Humidifier operates only in “Test/Reset” mode. Humidifier operates constantly. • If outdoor temperature is greater than 60°F or less than -30°F, the Humidifier Control will only operate in the “Test/Reset” mode (for 1 minute).
SYMPTOM Humidifier or Humidifier Control “chatters” or clicks On and Off rapidly. TROUBLESHOOTING PROCEDURE • Check for steady 22 VAC to 30 VAC across the “R” and “C” terminals of the Humidifier Control with a voltmeter. • Check, with a voltmeter, that the HVAC signal across the “W” and “C” and “G and C” terminals of the Humidifier Control is a steady 22 VAC to 30 VAC. • Make sure that the Outdoor Temperature Sensor wiring is not running alongside other wires carrying high voltage (120 VAC or higher).
