Testing Procedure

The testing was performed in two stages. The first stage operated the test chamber with the lamp off. (See table 1) This developed the control data or the base line bacterial levels for the comparison. The second stage operated the test chamber with the lamp on. (See table 2)

Two airflow rates were used to evaluate the lamp effectiveness based on exposure time. Airflow velocities through the ducts of a typical residential heating and cooling system range from 300 to 500 feet per min (fpm). For this study a base air velocity of 500 fpm was used. To decrease the exposure time, a second test was conducted with the airflow in the duct doubled to 1000 fpm. Since the effectiveness of UV lamps is based on the UV light output and exposure time, doubling the airflow reduces the effectiveness of the lamp.

The bacterium was cultured and the cells harvested to provide a suspension of known cell density. This was further diluted to provide gallon quantities of a test suspension containing an estimated 95,000 CFU/ml. This suspension was pumped through the spray nozzle mounted in the center of the duct inlet.

Five air samples were taken for each of the test velocities at short intervals (typically ½ to 2 minutes). This produced a large sample volume of air and reduced the levels of back ground bacteria and molds counts. The plate counts (colony forming units or CFU) for each of the five tests were totaled and divided by the total test volume of air. This produced the comparison value of (269 CFU/FT3 of air) for the 500 FPM airflow and (107.5 CFU/FT3 of air) for the 1000 FPM airflow. Due to apparent efficiency losses in the sampling method at the 1000 FPM velocity, the bacterium count yielded a 60% drop instead of the anticipated 50% reduction due to the velocity change.

Four air samples were taken at 1, 2.5, 3, 5, 6 & 10 minute intervals for each of the test velocities with the lamp on. The longer sample times with the lamp on were needed to obtain plate counts which would provide reliable estimates of the efficiency of disinfection, but with this, more background organisms were found. The plate counts were (18.00 CFU/FT3 of air for the UV-18 and 2.56 CFU/FT3 of air for the UV-18X) at 500 FPM airflow. They were 31.18 CFU/FT3 of air for the UV-18 and 10.40 CFU/FT3 of air for the UV-18X at 1000 FPM airflow.

Page 5

CC 2000 specifications

The Field Controls CC 2000 is a sophisticated indoor air quality (IAQ) solution designed to enhance the comfort and health of residential and commercial spaces. This innovative product primarily functions as a complete combustion management system, integrating advanced technology to monitor and optimize the performance of heating systems.

One of the standout features of the CC 2000 is its intelligent control system. The device utilizes a microprocessor-based design that allows for real-time monitoring of the combustion process, ensuring that gas and oil heating systems operate at peak efficiency. By analyzing various parameters, such as oxygen levels and flue gas temperatures, the CC 2000 can automatically adjust the system settings, minimizing harmful emissions and enhancing fuel efficiency.

In terms of user-friendliness, the CC 2000 comes equipped with a clear and intuitive display interface. This feature allows users to easily access vital system information, including performance metrics and diagnostics. The built-in alarms and notifications also keep users informed of any potential issues, enabling proactive maintenance and reducing the likelihood of costly repairs.

Another significant advantage of the Field Controls CC 2000 is its versatile compatibility. It is designed to work seamlessly with a variety of heating systems, including conventional and high-efficiency boilers and furnaces. This flexibility makes it an ideal choice for both new installations and retrofitting existing systems, ensuring enhanced performance across different applications.

Safety is a primary concern in fuel combustion, and the CC 2000 addresses this with its comprehensive safety features. The system is equipped with multiple sensors that detect hazardous conditions, such as flue gas leaks or excessive temperatures. In the event of a hazardous situation, the CC 2000 automatically shuts down the heating system to prevent accidents, providing peace of mind to users.

In summary, the Field Controls CC 2000 is a cutting-edge solution for improving indoor air quality and heating system efficiency. With its intelligent controls, user-friendly interface, versatile compatibility, and robust safety features, the CC 2000 provides a comprehensive approach to managing combustion-based heating systems. It supports a commitment to both environmental responsibility and user well-being, making it a valuable addition to any HVAC setup. As the importance of clean air continues to grow, devices like the CC 2000 are essential in creating healthier indoor environments.