Armstrong World Industries EHU-700 Series Results, Remedy, When Water Conductivity is TOO High

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Results:

-Excessive time needed to reach set point during star-up. -Poor humidity control.

Remedy:

-Add 1/2 teaspoon of Epsom salts to the fill cup. After start-up the automatic drain program should maintain the unit at full capacity.

-If problem persists, contact the factory.

WHEN WATER CONDUCTIVITY IS TOO HIGH

Indicators:

-Water level just touching tip of electrodes. -Arcing and foaming in the tank.

-Frequent drain cycles (every time the fill valve opens) that last up to 10 seconds.

Results:

-Tank frequently needs cleaning.

-Poor control because of excessively low water level. -Electrode destruction.

Remedies:

-If you have pure water available such as: de-ionized water, Reverse Osmosis diffusion water, or distilled water, they can be blended with tap water to reduce the total mineral content. Pure water alone is not conductive enough to pull current. The water is too pure when the "Tank Full" light comes on excessively. Consult a water purification equipment vendor for the proper blending equipment or the Armstrong factory for more information regarding use of purified water. The blended water conductivity should be in the 200-400 μMhos/cm range.

-Softened water is not recommended for use with the Series EHU-700 Humidifiers.

Water softeners replace the calcium ions in the water with sodium ions. As softened water boils, the sodium ions stay in solution causing the conductivity of the water in the tank to increase rapidly.

CAUTION: Soft water may increase the tank's water conductivity and does not allow a protective coating to form on electrodes. Also, as salts stay in solution more drainage will be needed to maintain correct water conductivity in the tank. Please consult factory for softened water analysis, if softened water source is available, before proceeding. Expect to replace electrodes more frequently. Discontinue service if continuous arcing or foaming occurs in the tank.

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Contents Installation and Maintenance Metal Tools Away from These Areas Table of Contents PRE-INSTALLATION Check ShipmentCheck Local Codes Site SelectionWater Total Installation Electrical Service WiringMounting the Humidifier Important Please observe the followingWater Fill Supply Connect DrainPressure in duct is high, see Figure Control Wiring Control Humidistat10 Ft Wall Mounted Control HumidistatAirflow Switch Duct Mounted Control HumidistatHigh Limit Duct Humidistat Audible Alarm Generator aInstrument Panel START-UP Procedure for Armstrong Series EHU-700 Humidifiers Before Turning on the PowerTurn on Power AT the Circuit Breaker Page Page Troubleshooting Guide Operational Guidelines Tank Contactor OperationMonitoring Stat Demand Monitoring % Power Manual Drain ModeMonitoring Current Automatic Drain OperationEHU-700 Diagnostics Diagnostic Display MessagesC02 Tank Needs Cleaning C00 Normal Operation C01 High WaterC04 High Limit Circuit C05 Drain System FailureC06 Fill System Failure C07 Overcurrent FailureC09 I/O Diagnostics When Water Conductivity is TOO LOW Water Quality and Treatment for EHU Series HumidifiersGeneral When Water Conductivity is TOO High ResultsRemedy RemediesSteam Generator Parts Valves and Mechanical Parts Electrical Parts EHU-700 Parts List Maintenance Recommended Maintenance Schedule To 2 Days After Start UPSteam Generator Maintenance Month to 1 YearTank Removal and Replacement ALL Models Steam Generator Chemical Cleaning Procedure Page Tank DISASSEMBLY, CLEANING, and Electrode Replacement Models EHU-703 and 704, Single and Three PhaseModel EHU-701, Single and Three Phase Fill and Drain System RepairDrain System Failure Fill System Failure Autocal Procedure SpecificationsHumidistat Data Sensor Failure ProtectionDimensions Sensor CharacteristicsHumidity SET Point Reset by Outside Temperature AIR Supply High Limit Humidity SensorApplication Example Humidistat model number H270-69-13-10-31Dimensional 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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