Armstrong World Industries EHU-700 Series, EHU-703, EHU-701 Pressure in duct is high, see Figure

Page 8

c.Use the template provided to cut installation holes in the duct for the dispersion tube as in Figure 7-2 (and optional drain tube, Figure 7-3).

d.Insert the dispersion tube into the duct so the holes face upward. Fasten the mounting plate to the outside of the duct with sheet metal screws. If the dispersion tube is 36" long or more, support the far end with threaded rod or similar means.

Figure 8-1. EHU 701

Figure 8-2. EHU 703/704

1-1/4" Copper Tube

1-1/2" Copper Tube

 

 

Copper Tube

 

Female Pipe Adapter

 

1-1/2" Pipe

1-1/2" I.D. Hose

 

 

Hose Clamp

 

2" I.D. Hose

EHU-701

 

Steam Generator Top

 

e.Connect the dispersion tube to the steam generator using 1¼" (EHU-701) or 1½" (EHU-703,704) nom. size hard copper tube (customer supplied) and the two short hoses supplied with the

humidifier (Figure 8-1). Pipe size may

Figure 8-3

 

need to be increased to 1½" or 2"

 

 

when piping runs are long or back

 

Holes in dispersion

pressure in duct is high, see Figure 9-2.

Steam

tube to be installed

in "UP" position

If piping plus duct back pressure

Outlet

 

 

Duct Above Outlet

exceeds 4" WC, please consult factory.

 

6" Water Seal

In addition, a short length of nominal

 

 

 

1½" threaded black iron pipe

 

 

and a copper tube to female pipe

 

 

thread adaptor must be supplied

 

 

by the customer for attaching the

 

Floor

piping to 703 or 704 tanks (Figure 8-2).

EHU-701

Drain

 

 

A 1½" to 1¼" reducer will be required

 

 

to connect the dispersion tube to the steam pipe of Models EHU-703/704 (Figure 8-5).

The steam pipe must be free of kinks and sags to allow for gravity drainage of condensate. (Provide pitch of 1" per foot towards the unit.) Pipe supports may be required to accomplish this. Insulate the copper tube to minimize condensation.

Figure 8-4

The preferred installation of the dispersion tube is above the humidifier with a maximum piping run of 20 feet or less (Figure 8-3).

Figure 8-4 shows the correct installation when:

1)You cannot achieve a 1" per foot reverse slope of the piping.

2)Piping runs range from 20 to the maximum of 40 feet of equivalent run.

3)Elbows or vertical risers must be placed in the piping.

4)The steam dispersion tube MUST BE below the humidifier. For this installation use a 1¼" copper tee for the drain connection of an EHU-701 or a 1½" copper tee for EHU-703 or 704 (Figure 8-5).

Figure 8-5

1-1/2" to 1-1/4" Copper

1-1/2" I.D. Hose

Reducer if Needed

 

1/2" PVC Tubing

1/2" O.D. Copper Tubing

8

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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 HumidistatHigh Limit Duct Humidistat Airflow SwitchDuct Mounted Control Humidistat Audible Alarm Generator aInstrument Panel Turn on Power AT the Circuit Breaker START-UP Procedure for Armstrong Series EHU-700 HumidifiersBefore Turning on the Power Page Page Troubleshooting Guide Monitoring Stat Demand Operational GuidelinesTank Contactor Operation 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 General When Water Conductivity is TOO LOWWater Quality and Treatment for EHU Series Humidifiers 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 PhaseDrain System Failure Model EHU-701, Single and Three PhaseFill and Drain System Repair 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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