APPLICATIONS
- Installs on the supply air plenum
- May be installed on the return air plenum if hot water (maximum 120°F continuous and 140°F intermittent) is supplied to humidifier
- Applicable to most forced air installations
- Not for installation in horizontal supply ducts in horizontal applications
- Do not install where freezing may occur
- Provides additional humidity to the home during the heating season to increase comfort level
- Humidifier, saddle valve and manual or automatic humidifier control (depending on model) shipped in one package
SEQUENCE OF OPERATION
- Humidifier will only operate when indoor blower is operating
- When the level of moisture in the return air or living space area drops below the set point of the humidifier control, the water solenoid valve opens
- Water flows into a distribution tray and weeps down through evaporator pad
- Fan draws air in through the moistened evaporator pad and forces the humidified air back into supply air stream
- When the humidifier control is satisfied, the water solenoid valve closes and the fan turns off
CABINET
- Rugged, corrosion-resistant molded plastic
- Motor and electrical service access located on front of cabinet in separate compartment
- Front of unit lifts off to access the evaporator pad and internal plumbing
MOTOR
- Thermally protected
- Permanently lubricated for long life
- Factory installed in molded plastic housing for protection against moisture
CONTROLS
Manual Humidistat – HCWP3-18 models
- Can be horizontally mounted on wall or duct
- Provides manual control of room relative humidity
- Wired in series with the humidifier water solenoid valve
- Adjustable setting
Automatic Humidifier Control – HCWP3-18A models
- Duct mount only
- Automatic or manual mode control
- Manual Mode label (with resistor to bypass outdoor temperature sensor) is furnished to indicate when humidistat is installed in Manual Mode
- Senses duct air relative humidity and outdoor temperature
- Includes outdoor temperature sensor for use with automatic control option and resistor for manual control setting
- Adjusts humidity setpoint to provide optimum humidity levels within the space
- Adjustable setting
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