Honeywell Humidifier TrueSTEAM Series Manual

The Honeywell Humidifier TrueSTEAM Series is a whole-home steam humidification system designed to integrate with your HVAC system, providing precise humidity control for improved indoor air quality and comfort. It features automatic humidity sensing, digital control, self-cleaning technology, easy installation, and compatibility with most forced-air heating and cooling 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 Modes 8. Maintenance & Cleaning 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Steam Generator, Control Panel, Humidistat, Installation Kit, Drain Hose, Water Supply Line.

Feature	Description
Steam Generator	Produces pure steam for humidification
Digital Control Panel	LCD display with touch controls for settings
Automatic Humidistat	Senses indoor humidity and adjusts output
Self-Cleaning System	Reduces mineral buildup automatically
Installation Kit	Includes mounting hardware and templates
Drain Hose	For condensate drainage
Water Supply Line	Connects to home water supply
POWER	Turns unit on/off
MODE	Selects operation mode (Auto, Manual, Boost)
SETTINGS	Access humidity level and timer settings

Installation

Unpack and inspect contents. Ensure proper location near HVAC system.

Mount steam generator: Use included bracket to mount on wall near ductwork.
Connect to duct: Install steam distribution tube into supply duct.
Connect water supply: Attach water line to cold water pipe with saddle valve.
Connect drain hose: Route to suitable drain location.
Connect power: Plug into dedicated 120V outlet.
Connect control wires: Link humidistat to generator and HVAC controls.

WARNING! Installation should be performed by a qualified HVAC technician. Ensure power is off during installation.

First-Time Setup

Power on unit; follow control panel prompts.

Set desired humidity: Use +/- buttons to set target humidity (30-60% recommended).
Select operation mode: Choose AUTO for automatic control based on outdoor temperature.
Calibrate humidistat: Follow on-screen calibration procedure if needed.
Test operation: Initiate test cycle to verify steam production and drainage.

CAUTION! Ensure water supply valve is fully open and drain line is unobstructed.

Specifications

Model Series: TrueSTEAM (Models HWM-xxx)
Humidification Capacity: Up to 1 gallon per hour
Coverage Area: Up to 4,000 sq. ft.
Control: Digital humidistat with LCD display
Water Connection: 1/4" copper or plastic tubing
Drain Connection: 3/8" ID hose
Power Requirements: 120V AC, 60Hz, 15A dedicated circuit
Operating Temperature: 40°F to 120°F (4°C to 49°C)
Warranty: Limited 5-year warranty

Controls and Settings

Access settings via control panel touch buttons. Front Panel: POWER, MODE, SETTINGS, +/-, MENU.

Remote Humidistat: POWER, Humidity Setpoint, Fan Control, System Status LED.

Humidity Control: Set target humidity (30-60%), outdoor temperature compensation. Operation Modes: AUTO (automatic based on temperature), MANUAL (constant output), BOOST (maximum output for 24 hours). Timer: Program daily operation schedule. Maintenance Alerts: Display reminders for descaling and filter check.

Connecting to HVAC System

Compatible with most forced-air systems. Requires connection to furnace control board.

Turn off power to HVAC system.
Connect control wires: Link humidifier to HVAC fan and heat call terminals.
Install steam distribution tube: Insert into supply duct downstream from heat source.
Connect drain: Route condensate to floor drain or condensate pump.

Tip: Refer to HVAC system manual for proper terminal identification.

Operation Modes

Three primary modes for different needs.

AUTO Mode: Automatically adjusts humidity based on outdoor temperature to prevent window condensation.
MANUAL Mode: Maintains constant humidity level regardless of outdoor conditions.
BOOST Mode: Runs at maximum capacity for 24 hours, then returns to previous mode.
Test Mode: Initiates a 5-minute cycle to verify system operation.
Vacation Mode: Reduces operation while away; maintains minimum humidity.

WARNING! Do not set humidity too high in cold weather to prevent condensation on windows.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

Monthly: Check drain hose for clogs; clean if necessary.
Quarterly: Inspect water line for leaks; clean inlet screen.
Annually: Descale steam generator using approved cleaning solution.
As needed: Replace humidifier filter (if equipped).

CAUTION! Always disconnect power before performing maintenance. Use only Honeywell-approved cleaning solutions.

Regulatory Information

UL Listed: Meets UL 507 standards for electric humidifiers. FCC Part 15: Class B digital device; complies with interference limits. Copyright © 2023 Honeywell International Inc. For support, visit www.honeywellhome.com or contact 1-800-468-1502.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No steam production	Power/water supply	Check power connection; verify water valve is open; check for error codes.
Low humidity output	Mineral buildup	Perform descaling procedure; clean steam generator.
Water leakage	Loose connections	Tighten water line fittings; check drain hose connection.
Error code displayed	System fault	Refer to error code chart in manual; reset system.
Control panel unresponsive	Power issue	Check circuit breaker; verify 120V power at outlet.

Reset: Press and hold POWER and MODE for 5 seconds to reset control board.

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