INTRODUCTION

Thank you for your recent steam humidifier purchase.. We appreciate your business and are pleased to add your name to our growing list of customers.. You have invested in the highest quality equipment available..

Your humidifier will require periodic maintenance to assure continued consistent performance.. See page 10..

Please take a few minutes and read this booklet.. This will familiarize you with the benefits you will receive from the humidifier and help you understand the routine maintenance that will be required..

Replacement Model S1-8044 Steam Canisters are available from your installing contractor or from most other heating and air conditioning contractors in your area. Look in the Yellow Pages under Humidifying Apparatus or Heating & Air Conditioning Contractors.

PRINCIPLES OF OPERATION

The Steam Humidifier delivers humidity in the form of steam to the conditioned space via the HVAC system duct or optional Model S1-854Y Fan Pack.. The humidifier generates steam by energizing two electrodes that extend into a canister of water.. Current flowing between the electrodes causes the water to boil, creating steam.. Water is introduced to the humidifier through a fill valve to a fill cup located in the top of the cabinet.. The fill cup serves as an overflow reservoir and provides an air gap between the humidifier and water source.. The steam canister is filled from the bottom.. The canister is seated in a drain cup assembly which includes a drain valve.. The drain and fill valves work together to maintain water level in the canister to deliver the rated steam capacity based on the electrical conductivity of the water and to temper drain water.. See Figure 1 for representation of fill and drain system and canister..

Steam is delivered into the airstream through a dispersion tube mounted in the HVAC system ductwork.. Openings in the dispersion tube are fitted with “tubelets” which extend into the center of the tube.. The design of the dispersion tube and tubelets distribute steam over a wide area in the duct and direct any condensed moisture back into the steam hose..

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Figure 1 – Fill and Drain System and Canister

 

 

Steam

 

 

Outlet

 

Fill Cup

 

 

 

Overflow

 

 

 

High Water

 

 

Level Sensor

 

 

Electrodes

Flow Control

 

 

Orifice

 

 

 

 

Canister

Inlet

Fill

 

 

 

Fill Valve

 

Drain Valve

 

 

Drain Cup

 

Supply

 

 

Water

 

 

Drain

 

 

 

90-1522

SEQUENCE OF OPERATION

When the Humidifier Control detects humidity below the set point, and provided the humidifier is turned on and the indoor unit blower is operating, the internal controller in the humidifier energizes the electrodes and measures the current flowing through the water between them.. The controller adjusts water level in the canister via a fill valve and a drain valve to maintain a constant current.. The operating water level in the canister depends on the mineral content of the water which determines conductivity..

A relay is provided with the humidifier that will allow the control to turn on the indoor unit blower when a call is made for humidity..

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Johnson Controls 8000 owner manual Introduction, Principles of Operation, Sequence of Operation
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8000 specifications

Johnson Controls, a global leader in building technology and energy solutions, offers a range of advanced air handling units designed to maximize efficiency and air quality. The models 8000, 6000, 4000, 7000, and 5000 cater to diverse building complexities and climate requirements, embodying the company’s commitment to innovation and sustainability.

The Johnson Controls 8000 series stands out with its high capacity and flexibility, making it suitable for large commercial buildings and industrial applications. This series incorporates advanced microprocessor controls that optimize energy usage and enhance operational performance. It also features ECM (Electronically Commutated Motors), which improve efficiency while reducing noise levels. The modular design allows for easy customization and quick installation, catering to specific building needs.

The 6000 series is engineered for medium-sized commercial spaces, combining efficiency and affordability. Its unique design incorporates high-efficiency heat exchangers and robust insulation that reduce energy consumption while providing comfort. With a focus on intelligent controls, the 6000 series can seamlessly integrate with existing building management systems, offering real-time data and performance monitoring.

For smaller commercial applications, the 4000 series provides an effective solution without compromising on features. This unit is compact yet powerful, delivering high airflow while maintaining low energy costs. Its simple installation and maintenance procedures make it an ideal choice for businesses looking for a cost-effective air handling solution. The 4000 series also includes advanced filtration options to ensure high indoor air quality.

The 7000 series is particularly noted for its application versatility, suited for both light commercial and industrial environments. This series employs advanced technologies such as variable speed drives, which adjust motor speeds based on demand, resulting in significant energy savings. Its robust build quality and efficient thermal performance make it an enduring solution for diverse operating conditions.

Lastly, the 5000 series is designed to meet the needs of educational and healthcare facilities, where indoor air quality is paramount. This series includes HEPA filtration options and UV-C light systems to significantly reduce airborne pathogens, ensuring a safe and healthy indoor environment. Its user-friendly controls and smart technology integration provide ease of operation, enabling facility managers to maintain optimal performance with minimal effort.

In summary, Johnson Controls' air handling unit offerings encompass a range of models with advanced features, cater to various application needs, and underline the company's dedication to energy efficiency and improving indoor environments for better health and comfort.
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