Armstrong World Industries EHU-703, EHU-700 Series, EHU-701, EHU-704 manual Instrument Panel

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codes.
Leaving the display in the diagnostic mode for 10 seconds initiates the input/output diagnostic routine (see Diagnostics pg. 20).
The 3 digit display also exhibits a diagnostic code in the event that the unit has shut down automatically.
Indicates when the fill valve is energized to add water to the steam generator.
Indicates when the drain valve is energized to drain water from the steam generator.
The Mode select button is depressed for approximately ½ second to switch both the "display mode selected" indicator and the 3 digit display between:
-DEMAND-% of humidistat control range. -CURRENT-actual current in amps.
-% POWER- ratio of current draw to the nominal rating of the unit.
-DIAGNOSTIC MODE- readout of diagnostic

INSTRUMENT PANEL

MODE BUTTON, INDICATOR, and DISPLAY

DEMAND

CURRENT % POWER DIAGNOSTIC

FILL

DRAIN

HIGH WATER

TANK OFF

MODE SELECT

TANK ON/OFF

DRAIN ON/OFF

FILL LIGHT

DRAIN LIGHT

HIGH WATER LIGHT Indicates that the water level in the generator has risen to the high water level.

TANK OFF LIGHT

Indicates when power to the generator has been interrupted (tank

 

contactor open).

TANK ON/OFF

Depressing the tank on/off button for ½ second will open the tank

 

contactor. The tank off light and the diagnostic light will be on and the

 

display will show the message CO8. The unit will stay in this mode

 

until the button is pressed again.

MANUAL DRAIN

Depressing the manual drain button for ½ second will open the drain

BUTTON

valve. The tank will continue to drain until the button is pressed again.

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Contents Installation and Maintenance Metal Tools Away from These Areas Table of Contents Check Shipment PRE-INSTALLATIONCheck Local Codes Site SelectionWater Total Electrical Service Wiring InstallationMounting the Humidifier Important Please observe the followingConnect Drain Water Fill SupplyPressure in duct is high, see Figure Control Humidistat Control WiringWall Mounted Control Humidistat 10 FtDuct Mounted Control Humidistat Airflow SwitchHigh Limit Duct Humidistat Generator a Audible AlarmInstrument Panel Before Turning on the Power START-UP Procedure for Armstrong Series EHU-700 HumidifiersTurn on Power AT the Circuit Breaker Page Page Troubleshooting Guide Tank Contactor Operation Operational GuidelinesMonitoring Stat Demand Manual Drain Mode Monitoring % PowerMonitoring Current Automatic Drain OperationDiagnostic Display Messages EHU-700 DiagnosticsC02 Tank Needs Cleaning C00 Normal Operation C01 High WaterC05 Drain System Failure C04 High Limit CircuitC06 Fill System Failure C07 Overcurrent FailureC09 I/O Diagnostics Water Quality and Treatment for EHU Series Humidifiers When Water Conductivity is TOO LOWGeneral Results When Water Conductivity is TOO HighRemedy RemediesSteam Generator Parts Valves and Mechanical Parts Electrical Parts EHU-700 Parts List Recommended Maintenance Schedule To 2 Days After Start UP MaintenanceSteam Generator Maintenance Month to 1 YearTank Removal and Replacement ALL Models Steam Generator Chemical Cleaning Procedure Page Models EHU-703 and 704, Single and Three Phase Tank DISASSEMBLY, CLEANING, and Electrode ReplacementFill and Drain System Repair Model EHU-701, Single and Three PhaseDrain System Failure Fill System Failure Specifications Autocal ProcedureHumidistat Data Sensor Failure ProtectionSensor Characteristics DimensionsAIR Supply High Limit Humidity Sensor Humidity SET Point Reset by Outside TemperatureHumidistat model number H270-69-13-10-31 Application ExampleDimensional Information

EHU-701, EHU-700 Series, EHU-704, EHU-703 specifications

Armstrong World Industries has long been a leader in the ceiling and wall solutions industry, and its EHU-700 Series exemplifies the commitment to innovation and quality. The EHU-700 Series, which includes models such as the EHU-703, EHU-704, and EHU-701, is designed for a variety of commercial applications, combining aesthetic appeal with superior performance characteristics.

One of the key features of the EHU-700 Series is its exceptional acoustic control. The panels are crafted using advanced sound-absorbing materials that effectively reduce noise levels in busy environments. This makes them ideal for areas such as offices, schools, and healthcare facilities, where quietness can significantly enhance productivity and comfort. The EHU-700 Series has been rigorously tested and certified to meet stringent industry standards, ensuring its effectiveness in noise reduction.

Additionally, these ceiling panels are designed with durability in mind. Made from high-quality components, the EHU-700 Series is resistant to moisture and staining, making them suitable for spaces exposed to humidity, such as kitchens and restrooms. This resilience ensures that the panels maintain their aesthetic appeal over time, reducing maintenance costs for facility managers.

The EHU-700 Series also incorporates Armstrong's innovative technologies to enhance ease of installation and flexibility. The panels feature a lightweight design, allowing for straightforward handling and installation. Compatibility with various grid systems ensures that the EHU-700 Series can be easily integrated into existing architectural designs, providing a seamless finish.

Another significant aspect of the EHU-700 Series is its commitment to sustainability. Armstrong World Industries emphasizes eco-friendly manufacturing processes and materials, allowing architects and builders to achieve green building certifications, such as LEED. The use of recyclable materials in the panel composition reflects a commitment to reducing the environmental footprint.

In summary, the EHU-700 Series, including the EHU-703, EHU-704, and EHU-701 models, showcases Armstrong World Industries' dedication to quality and innovation. With unparalleled acoustic performance, durability, installation convenience, and sustainability, these ceiling panels are ideal for a wide array of commercial environments, proving to be a valuable investment for modern architectural needs. Their combination of functionality and design ensures that they meet the demands of today's dynamic spaces.
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