Honeywell Humidifier HE365DG115 Manual

The Honeywell Humidifier HE365DG115 is a high-capacity drum-style humidifier designed for whole-house humidification, compatible with forced-air heating systems. It features automatic humidity control, a durable drum assembly, replaceable evaporator pad, built-in bypass damper, and easy installation. 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, Drum assembly with motor, Evaporator pad, Water panel, Bypass damper, Drain hose, and Installation hardware.

Feature	Description
Humidistat Control	Automatic humidity sensing and adjustment
Drum Assembly	Rotating drum for efficient water evaporation
Evaporator Pad	Replaceable pad for mineral absorption
Bypass Damper	Built-in damper for airflow control
Water Panel	Easy-access water distribution system
Drain Hose	For excess water drainage
Power Cord	Standard 120V AC connection
Installation Kit	Includes mounting brackets and hardware
Indicator Lights	Power and operation status
Manual Override	For manual humidity control when needed

Installation

Unpack and inspect all components. Ensure proper location near HVAC system.

Mount humidifier: Attach to warm air supply duct using provided brackets.
Connect water supply: Install saddle valve on cold water line; connect 1/4" tubing.
Connect drain hose: Route to floor drain or suitable drainage point.
Electrical connection: Plug into 120V outlet; ensure proper grounding.
Connect to return air duct: Install bypass duct between supply and return.

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

First-Time Setup

After installation, perform initial setup and testing.

Set humidistat: Adjust to desired humidity level (typically 35-45%).
Check water flow: Turn on water supply; verify proper filling of water panel.
Test operation: Turn on HVAC system; verify drum rotation and humidification.
Adjust bypass damper: Set for proper airflow based on duct configuration.
Calibrate humidistat: Compare with room hygrometer; adjust if necessary.

CAUTION! Ensure all connections are secure before powering on. Check for water leaks.

Specifications

Model: HE365DG115
Type: Drum-style bypass humidifier
Coverage: Up to 3,500 square feet
Output: 17 gallons per day maximum
Water Connection: 1/4" compression fitting
Power Requirements: 120V AC, 60Hz, 2.5A
Duct Connections: 6" round or 8" x 14" rectangular
Dimensions: 17.5" H x 15.5" W x 11.5" D
Weight: 22 lbs (empty)
Warranty: 5-year limited warranty

Controls and Settings

Humidistat Control: Automatic humidity sensing with manual override.

Control Panel: Power switch, Humidity level dial (OFF to MAX), Indicator lights (Power, Call for Humidity), Manual test button.

Settings: Adjust humidity level based on outdoor temperature (refer to chart in manual). Automatic shutoff when desired humidity reached. Manual mode for continuous operation. Test mode for system verification.

Connecting to HVAC System

Bypass installation: Connect between warm air supply and return air ducts.

Turn off HVAC system at thermostat.
Cut openings in supply and return ducts per template.
Install duct collars and secure with sheet metal screws.
Connect flexible duct between humidifier and collars.
Install bypass damper in return duct connection.

Tip: Ensure proper duct sizing and minimal bends for optimal airflow.

Operation

Automatic operation with humidistat control.

Set desired humidity: Turn dial to recommended setting for current outdoor temperature.
Automatic cycling: Humidifier activates when HVAC system runs and humidity is below set point.
Drum operation: Motor rotates drum through water reservoir; air passes through wet evaporator pad.
Water distribution: Constant flow through water panel; excess drains out.
Seasonal adjustment: Lower humidity setting in colder weather to prevent condensation.

WARNING! Do not operate without water supply connected. Ensure drain hose is unobstructed.

Maintenance

Regular maintenance ensures optimal performance and longevity.

Monthly: Check evaporator pad for mineral buildup; replace if heavily scaled.
Seasonal: Replace evaporator pad at start of heating season.
Annual: Clean water panel and reservoir; inspect drum and motor.
As needed: Clean humidistat sensor; check for water leaks.

Note: Use only genuine Honeywell replacement parts.

Care & Cleaning

Turn off power and water supply before cleaning.

Clean exterior: Use damp cloth; avoid harsh chemicals.
Clean water panel: Remove and rinse with water; mild vinegar solution for mineral deposits.
Clean reservoir: Empty and scrub with soft brush; rinse thoroughly.
Clean drain hose: Flush with water to remove sediment.

CAUTION! Never use abrasive cleaners. Ensure all parts are dry before reassembly.

Regulatory Information

UL Listed. CSA Certified. Meets applicable HVAC standards. Copyright © Honeywell International Inc. For support, visit www.honeywellhome.com or contact 1-800-468-1502. This product complies with NSF/ANSI Standard 42 for material safety.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No humidity output	Power/water supply	Check power connection; verify water valve is open; check humidistat setting.
Water leaking	Loose connections	Tighten all fittings; check drain hose for obstructions; replace seals if worn.
Drum not rotating	Motor/obstruction	Check motor operation; clear any obstructions; replace motor if faulty.
Excessive noise	Loose parts/minerals	Tighten mounting hardware; clean mineral deposits from drum; lubricate motor if needed.
Poor humidity control	Sensor/duct issues	Clean humidistat sensor; check bypass damper setting; ensure proper duct airflow.

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

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