Honeywell Humidifier TrueEASE HE300 Manual

The Honeywell TrueEASE HE300 is a whole-house humidifier designed to maintain optimal indoor humidity levels, improving air quality and comfort. It features automatic humidity control, easy installation, low maintenance, and compatibility with most HVAC systems. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to HVAC System 7. Operation 8. Maintenance 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Humidistat control panel, water panel evaporator, drain fitting, bypass damper, and mounting bracket.

Feature	Description
Automatic Humidity Control	Maintains set humidity level automatically
Easy Installation	Designed for simple integration with existing HVAC systems
Low Maintenance	Water panel replacement once per season
Quiet Operation	Operates silently without disturbing household
Bypass Damper	Controls airflow through humidifier
Drain Fitting	Connects to drain line for excess water
Humidistat	Digital control for setting desired humidity level
Mounting Bracket	Secure mounting to ductwork
Water Panel Indicator	Alerts when water panel needs replacement
Power Connection	24V AC connection to furnace or transformer

Installation

Unpack and inspect contents. Ensure all parts are present.

Choose location: Install on warm air duct (supply plenum).
Mount bracket: Secure mounting bracket to ductwork.
Connect water supply: Attach 1/4" water line to saddle valve.
Connect drain line: Attach drain hose to fitting and route to drain.
Install bypass duct: Connect between supply and return plenums.
Electrical connection: Connect 24V wires to furnace or transformer.

WARNING! Turn off power and water supply before installation. Follow local plumbing and electrical codes.

First-Time Setup

After installation, complete initial setup.

Turn on power: Restore power to furnace/humidifier.
Set humidistat: Adjust to desired humidity level (30-50% recommended).
Check water flow: Ensure water is flowing to water panel.
Test operation: Run furnace to activate humidifier.
Adjust bypass damper: Set for proper airflow.

CAUTION! Do not set humidity too high to prevent condensation on windows.

Specifications

Model: TrueEASE HE300
Coverage: Up to 3,000 sq. ft.
Output: Up to 18 gallons per day
Power Requirements: 24V AC, 0.5A
Water Connection: 1/4" compression fitting
Drain Connection: 3/4" hose fitting
Dimensions: 16.5" H x 11.5" W x 9.5" D
Weight: 8.5 lbs
Operating Temperature: 40-120°F

Controls and Settings

Humidistat Control: Digital display with up/down buttons.

Settings: Humidity level (20-60%), fan activation delay, diagnostic mode.

Operation Modes: Automatic (follows set point), Manual (continuous operation).

Indicator Lights: Power (green), Call for humidity (yellow), Service (red).

Connecting to HVAC System

Bypass Installation: Most common installation type.

Install on warm air supply plenum.
Connect bypass duct between supply and return plenums.
Ensure proper damper adjustment for airflow control.
Connect to furnace control board or 24V transformer.

Tip: Install humidifier at least 18 inches from furnace heat exchanger.

Operation

Automatic Operation: Humidistat controls operation based on set point.

Set desired humidity: Use up/down buttons on humidistat.
System activates: When humidity drops below set point.
Water flows: Over evaporator pad where air absorbs moisture.
Excess water drains: Through drain line.
System deactivates: When humidity reaches set point.

WARNING! Do not operate without water supply connected. Ensure drain line is not blocked.

Maintenance

Regular maintenance ensures optimal performance.

Monthly: Check drain line for blockages.
Seasonal: Replace water panel evaporator (typically once per heating season).
Annual: Clean humidifier interior and check all connections.
As needed: Clean humidistat sensor.

Water Panel Replacement: Turn off power and water. Remove old panel, insert new one.

Care & Cleaning

Turn off power and water before cleaning.

Exterior: Wipe with damp cloth.
Interior: Remove mineral deposits with vinegar solution.
Drain line: Flush with water to remove sediment.
Sensor: Clean with soft brush.

CAUTION! Do not use harsh chemicals. Never immerse electrical components in water.

Regulatory Information

UL Listed. CSA Certified. FCC Part 15 Compliant. Manufactured to meet industry standards for safety and performance. Copyright © Honeywell International Inc. For support, visit www.honeywellhome.com or contact 1-800-468-1502.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No humidity output	Power/water supply	Check power connection; ensure water valve is open.
Water leaking	Drain line blockage	Clear drain line; check fittings for tightness.
Low humidity	Dirty water panel	Replace water panel; check bypass damper setting.
Unit not turning on	Humidistat setting	Check set point; ensure furnace is running.
Mineral buildup	Hard water	Clean with vinegar; consider water softener.
Error code on display	Sensor/control issue	Refer to manual error code chart; reset power.

Reset: Turn power off for 30 seconds, then restore.

Service: 1-800-468-1502; www.honeywellhome.com