Armstrong World Industries EHU-700 Series Humidistat Data, Autocal Procedure, Specifications

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HUMIDISTAT DATA

AUTOCAL PROCEDURE

1.Measure the room humidity near the humidistat with an accurate hygrometer.

2.Turn the humidistat set point dial to match the reading of the hygrometer.

3.Push and hold the Autocal button for more than 3 seconds or until the internal red light turns On and Off.

SENSOR FAILURE PROTECTION

The sensor is the most sensitive part of the humidistat and also the most exposed. In the case of a sensor failure in humidification mode, the humidistat will automatically assume a fail-safe output of 0%.

SPECIFICATIONS

Operating Conditions: 5°C to 50°C (32°F to 122°F)

•Control: 0% to 95% R.H. non-condensing

•Sensor: 0% to 100% R.H. (see Note 1.)

Resolution:

± 0.1 %

Repeatability: 0.5 %

Accuracy and sensor interchangeability:

± 2% R.H. from 0 to 100% R.H.

Range:

10% to 90% R.H. for 5 to 50°C

 

(41°F to 122°F)

Temperature effect:

0.05% / °F

Outputs:

Isolated Triac: 30 Vac at ½ A max.*

 

0 to 5 VDC into 1 KΩ resistance min.

 

0 to 10 VDC into 2 KΩ resistance min.

 

0/5 VDC at 20 mA max. for both outputs.

Power:

24 VAC -15%, +10%; 50/60 Hz; 2 VA

Base and casing:

Off-white; self extinguishing ABS plastic

* Triac outputs can only switch AC loads. Use relays when switching dc loads.

Note 1. Humidity sensor: Solid state humidity sensor. Suitable for normal, clean air. Not to be used in corrosive or harmful environment.

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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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