Nortec Humidifier Operation and Maintenance Manual for Steam Humidifiers
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valves operation. Green and yellow lights flash during this time.

If there is no call for humidity, the humidifier is standing by and green light flashes. When control loop is closed, the green light is steady on and the humidifier starts its operation. The controller waits 10 seconds before energizing the on-board relays. When the relays energize, heating voltage is delivered to the cylinder. After a 30 second delay, the fill valve is activated (if the output from the cylinder is below 100 %). If controller detects increase of amperage above allowed range, the unit will activate drain valve for 2 seconds.

During operation, the controller measures the rate at which water is converted to steam and thus the mineral content of water inside the cylinder. When this rate exceeds the design optimum, a drain of the cylinder takes place. The amount of water drained is just enough to keep the contained water at design levels.

During start up, when mineral content in the water is low, water will reach the top of the cylinder at which point the yellow indicator light will come on. This is normal operation with a fresh cylinder. After a period of time the water level will drop and the yellow light will turn off.

High water level in the cylinder also indicates that the cylinder is near the end of its service life as electrodes become coated with minerals. The yellow light coming on more often would be the first indication of approaching the end of the cylinder life.

Figure #15

Operation Schematic

CONDENSATE RETURN (OPTIONAL)

A flashing yellow light indicates a fault of the

humidifier and the controller shuts off the humidifier. Please refer to troubleshooting section.

For periods of time with no call for humidity, longer than 2 days, the humidifier automatically drains water from cylinder.

MANUAL CAPACITY ADJUSTMENT

The RESDELUX humidifier is rated in lbs/hr of steam output capacity. Set to 100%, it will operate at full output until the humidistat has sensed that the humidity has reached setpoint, it will then stop when the control circuit 1-2 is interrupted. See Figure #13.

If the humidifier is oversized, the humidistat will be quickly satisfied (less then 10 minutes) and stop the humidifier. As the humidity level drops the humidistat starts the humidifier again. It is quickly satisfied and stops again. The resultant short-cycling can be easily overcome. A manual capacity adjustment potentiometer is provided on the RESDELUX main PC board to increase the runtime to about 15 minutes. It is marked “CAPACITY ADJUSTMENT” and is adjustable from 25 to 100% of operating rating.

OTHER POTENTIOMETERS

Do not adjust any other potentiometers on the PC board. They are factory-set and not to be adjusted in the field.

MAINTENANCE

As with all automatic and mechanical devices, humidifiers require periodic maintenance and servicingeither by the user or competent service personnel to provide continued customer satisfaction, longer equipment life and reduction in customer cost.

FILL

CUP

1.INLET CHAMBER

2.FILL CHAMBER

3.WATER OVERFLOW CHAMBER (SAFETY DRAIN IN CASE OF FILL VALVE/ CONTROL BOARD FAILURE)

STRAINER FILL VALVE

TAP WATER SUPPLY

 

 

 

1” AIR

1

2

3

GAP

DRAIN

VALVE

STEAM HOSE

ELECTRODES

CYLINDER

DRAIN

PAN

WARNING! DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE SERVICING. The plumbing and electrical compartments contain high voltage components and wiring. The access door is equipped with a lock. Access should be limited to authorized personnel only.

Note: Review periodic maintenance. Checklist on page 16.

STEAM CYLINDER

WHEN TO REPLACE THE STEAM CYLINDER

DRAIN CONNECTION

DRAIN CANAL

(OPEN TO ATMOSPHERE)

After a period of operation (not on initial startup), the water level will approach the top of the cylinder.

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Contents Installation, Operation Maintenance Troubleshooting Guide Table Of Contents Page Receiving & Unpacking Equipment InstallationPRE-INSTALLATION Checkpoint Humidifier ConfigurationMin Steam Distributor Nozzle in duct locationCabinet Mounting of the Blower Pack Steam Hose InstallationCondensate Hose supplied Blower Pack ConnectionTable #1 Clearances of Remote Mounted Blower Pack Remote Mounting of the Blower PackDrain Line PlumbingWater Supply Line Electrical Requirements for Permanently Connected Resdelux LOW Voltage Control Wiring and InstallationControl Wiring ElectricalResdelux Operation Control InstallationOperation IntroductionSteam Cylinder MaintenanceManual Capacity Adjustment When to Replace the Steam CylinderHOW to Install the Replacement Cylinder HOW to Remove the Steam CylinderExtended Shutdown Mandatory Cleaning of the Drain ValveDiagnostic Procedures Troubleshooting TroubleshootingProcedures and Terms Used Diagnosing L1 N Transformer Item Number Part Number Description Spare Parts List and Exploded View Resdelux21a 21b 21c 13a 13d 13e 13b 13c 11b 11a 12 12a 14a Inspect, Check, Clean, and Adjust all items listed Periodic Maintenance ChecklistLimited Warranty MTH/DAY/YR

Steam Humidifiers specifications

Nortec Steam Humidifiers are recognized for their robust performance and reliability in providing precise humidity control for various applications. These advanced humidification systems utilize state-of-the-art technology to ensure optimal indoor air quality in commercial, industrial, and institutional environments. One of the standout features of Nortec Steam Humidifiers is their ability to produce high-quality steam through an efficient and consistent process.

The humidifiers employ a direct steam generation method, which allows for rapid humidity delivery and precise control over output levels. This is particularly beneficial in settings such as hospitals, laboratories, and manufacturing facilities, where specific humidity levels are critical for operational success. The steam produced is free from impurities and is ideal for various applications, including protecting sensitive equipment, preserving materials, and enhancing comfort for occupants.

Another notable characteristic of these humidifiers is their compact design. Nortec Steam Humidifiers are engineered to occupy minimal space while maintaining high productivity. Furthermore, they are equipped with advanced controls and monitoring systems that enable users to customize settings according to their specific needs. This includes options for modulating steam output according to the changing requirements of the environment.

The humidifiers also feature a user-friendly interface, allowing for easy adjustment and monitoring of system performance. High-precision sensors measure humidity levels accurately, ensuring that the output is consistently matched to the desired set point. Nortec Steam Humidifiers are designed with energy efficiency in mind, using innovative technologies to minimize energy consumption while maximizing steam output.

In terms of maintenance, Nortec provides easy access to key components, ensuring that routine checks and servicing can be completed efficiently. The use of advanced materials in the construction of humidifiers contributes to their durability and long operational lifespan. Integration with building management systems is also possible, allowing for seamless operation within a larger environmental control strategy.

In summary, Nortec Steam Humidifiers stand out in the market due to their innovative technologies, precise humidity control, energy efficiency, and ease of maintenance. These features make them an ideal choice for a wide array of humidification needs, ensuring excellent air quality and comfort in any setting. With their commitment to quality and reliability, Nortec continues to be a leader in the humidification industry.
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