Honeywell HE420A Manual
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Honeywell HE420A Manual

Honeywell HE420A Manual

Steam power humidifier
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See also: Owner's Manual
HE420A Steam Power Humidifier

APPLICATION

The HE420A Steam Power Humidifier uses a thermal fan
interlock control to provide humidification for the whole house.
The steam power humidifier is designed to work with high
efficiency furnaces, heat pumps and set back thermostats.

FEATURES

• Humidifies the air without a call for heat from the
thermostat so relative humidity fluctuates less,
optimizing homeowner comfort.
• Ideal for homes with extensive woodwork, hardwood
floors, antiques, oil paintings, leather furniture, pianos,
and fine collectibles.
• Capable of humidifying a large area.
• Compact size allows easy installation.
• Minimal amount of water needed for energy efficient
operation.
• Low water cut-off switch and built-in overflow
protection are integral safety features.
• Automatic Flushing Timer reduces frequency of
maintenance in a hard water installation.
Application ........................................................................
Features............................................................................
Specifications ....................................................................
Ordering Information .........................................................
Installation.........................................................................
Wiring................................................................................
Plumbing Humidifier..........................................................
Set Water Level ................................................................
Installing Automatic Flushing Timer .................................
Checking the Installation...................................................
Operating the Humidifier ...................................................
Operation ..........................................................................
Maintenance .....................................................................
Checkout Procedures .......................................................
Troubleshooting ................................................................
Replacement parts............................................................
PRODUCT DATA
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68-0192-4

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Summary of Contents for Honeywell HE420A

  • Page 1: Table Of Contents

    APPLICATION protection are integral safety features. • Automatic Flushing Timer reduces frequency of The HE420A Steam Power Humidifier uses a thermal fan maintenance in a hard water installation. interlock control to provide humidification for the whole house. The steam power humidifier is designed to work with high efficiency furnaces, heat pumps and set back thermostats.

  • Page 2: Specifications

    If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care...

  • Page 3: Installation

    HE420A STEAM POWER HUMIDIFIER INSTALLATION IMPORTANT Read all the installation instructions before installing the humidifier. Select Location and Mount There are three typical ways of mounting the steam humidifier: • horizontally under at least a 10 in. (254 mm) wide duct using the mounting bracket (preferred mounting);...

  • Page 4: Wiring

    HE420A STEAM POWER HUMIDIFIER 1. Position the bracket 1/2 in. (13 mm) from the edge of the 5. Remove sheet metal. duct and trace around the bracket. See Fig. 5. 2. Once the outline has been traced, remove bracket. IMPORTANT 3.

  • Page 5: Set Water Level

    PUSH OPERATING THE HUMIDIFIER DOWN HOLD DOWN The Honeywell HE420A Humidifier is controlled by an PUSH Automatic Humidity Control. The Automatic Humidity Control is mounted in the return air duct where it can be exposed to the M10581A air stream of the return air, and is designed to automatically Fig.

  • Page 6: Operation

    VALVE ARM RESERVOIR OPERATION HUMIDITY The HE420A Humidifier uses the principle that hot water CONTROL creates water vapor. As dry air and vapor mix, the relative humidity of the air rises. The humidity control monitors the relative humidity and activates the humidifier accordingly.

  • Page 7: Checkout Procedures

    HE420A STEAM POWER HUMIDIFIER 11. Reset the water level. IMPORTANT Be sure the humidifier power is off and there is no water in the humidifier. CAUTION Vacation Flooding Hazard. Inadequate support of the float arm can lead to When you leave on vacation, turn off the humidifier water valve seat damage resulting in water leakage.

  • Page 8: Replacement Parts

    HE420A STEAM POWER HUMIDIFIER REPLACEMENT PARTS Refer to Fig. 14 and Table 5 when ordering replacement parts. M23366 Fig. 8. Exploded view of humidifier parts. Table 5. List of Replacement Parts for HE420A Humidifier Exploded HE420A Part Exploded HE420A Part...

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