Honeywell HE420A User Manual

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PRODUCT DATA
68-0192-4
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.
Contents
Application ........................................................................ 1
Features............................................................................ 1
Specifications.................................................................... 2
Ordering Information......................................................... 2
Installation......................................................................... 3
Wiring................................................................................ 4
Plumbing Humidifier.......................................................... 4
Set Water Level ................................................................ 5
Finish Mounting and Plumbing Humidifier ........................ 5
Installing Automatic Flushing Timer ................................. 5
Checking the Installation................................................... 5
Operating the Humidifier................................................... 5
Operation .......................................................................... 6
Maintenance ..................................................................... 6
Checkout Procedures ....................................................... 7
Troubleshooting ................................................................ 7
Replacement parts............................................................ 8
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Summary of Contents

Page 1 - HE420A Steam Power Humidifier

PRODUCT DATA68-0192-4HE420A Steam Power HumidifierAPPLICATIONThe HE420A Steam Power Humidifier uses a thermal fan interlock control to provide humidif

Page 2 - SPECIFICATIONS

HE420A STEAM POWER HUMIDIFIER68-0192—4 2ORDERING INFORMATIONWhen purchasing replacement and modernization products from your TRADELINE® wholesaler or

Page 3 - INSTALLATION

HE420A STEAM POWER HUMIDIFIER3 68-0192—4INSTALLATIONIMPORTANTRead all the installation instructions before installing the humidifier.Select Location a

Page 4 - PLUMBING HUMIDIFIER

HE420A STEAM POWER HUMIDIFIER68-0192—4 41. Position the bracket 1/2 in. (13 mm) from the edge of the duct and trace around the bracket. See Fig. 5.2.

Page 5 - TO LOWER WATER LEVEL

HE420A STEAM POWER HUMIDIFIER5 68-0192—48. Flush the copper tubing to remove any debris that can cause problems at the float valve.9. Route the tubing

Page 6 - MAINTENANCE

HE420A STEAM POWER HUMIDIFIER68-0192—4 6an anticipated 20°F, the control automatically maintains the indoor relative humidity in the safe, comfortable

Page 7 - TROUBLESHOOTING

HE420A STEAM POWER HUMIDIFIER7 68-0192—411. Reset the water level.CAUTIONFlooding Hazard.Inadequate support of the float arm can lead to valve seat da

Page 8 - REPLACEMENT PARTS

Automation and Control SolutionsHoneywell International Inc. Honeywell Limited-Honeywell Limitée1985 Douglas Drive North 35 Dynamic DriveGolden Valley

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