Trion Air Boss Model 75 Info for System Design Engineer

Model 75 Series Units with Integral Washing System

Click Here for Model 75 Units With No Washing System

1. General Description
The standard major components supplied with each unit for installation are as follows:

electronic air cleaner
controller / power supplies
the detergent system
wash water line strainer and solenoid valve

The electronic air cleaner contains the ionizing-collecting cells (collecting elements), wash manifolds—located to the front and rear of each tier of cells—and metal mesh pre-filters and after-filters. Perforated plate or impingement type mist suppressors, in lieu of the metal pre-filters, are options when specified.

Gasketed access doors located on one end of the cabinet, 90° to the direction of the airflow, provide entry for removal of the cells and filters. The location of the access doors, wash manifold drive motors and manifold header pipes may be specified as “right” or “left” handed. The hand designation is determined by standing in the ductwork on the air entering side of the unit so the airflow strikes your back.

The Pulse Width Modulated (PWM) power supplies, providing the necessary high voltage for the air cleaner and the controls initiating and sequencing the wash cycle are furnished in a NEMA 12 enclosure designed for remote mounting. The distance between the controller and unit must be determined as the interconnecting high voltage leads are furnished to the specified length. Consult factory for distances greater than 50 ft. Cables are not to be spliced at any point along their length. In addition, the enclosure is a central junction for the primary wiring.

The detergent system is furnished as a completely assembled unit to be piped directly to the wash water supply, into the wash manifold headers.

Note: 30 or 55-gallon detergent tanks are available as an option.

Note: Trion Tridex Detergent is specially formulated for use with Trion electronic air cleaners. Use of other cleaners and detergents, not specifically approved by Trion, can cause possible failures in the unit and will void any and all warranties on our equipment.

The strainer and solenoid valves are to be installed in the wash water supply lines. A back flow preventer and/or check valves should be installed according to local code requirements. These items are not provided as part of the system accessories. The Model 75 has a ¼” Female NPT fitting for installation of a pressure gage (Not supplied by Trion). This gage is used to ensure adequate water pressure during the wash cycle, (see attached piping diagram for specific locations).

2. System Design and Layout
The arrangement of the supplied components and the general layout of the system will vary according to application, adjoining equipment and available space. However, there are several basic factors pertaining to all installations that must be considered:

To maintain the selected cleaning efficiency, it is important to assure that the total air volume (capacity in CFM) is uniformly distributed across the entire face area of the unit. The metal mesh filters, perforated plate or mist suppressors provide some resistance to effect even air distribution. However, since most air ducts are designed to handle air velocities greater than the rated velocity of the air cleaner, it is necessary to properly transition any attached ducting. If possible, a contraction ratio of 1 in 3 (approximately 20°) should be maintained. If space prohibits, turning vanes, air baffles or other means may be utilized. Ducting – where attached to the cabinet collars – should be gasketed, caulked or otherwise made watertight.

When there is a danger of rain, snow or debris being drawn into the system with outside air, the make-up air intake should be protected with rain louvers, hooding and hardware cloth to prevent the rain, snow or debris from entering the electronic air cleaner.

Contaminants to be collected – such as oils in vaporous state – must be condensed into particulate form prior to entering the ionizing-collecting cells in order to maintain the anticipated efficiency. Gases, vapors or any non-particulate cannot be precipitated and will therefore pass through the air cleaner. Any condensing that takes place downstream from the air cleaner defeats the purpose. By the same token, heavy concentrations of water vapor, or other matter that becomes highly conductive when condensed, must be prevented from entering and/or condensing in the collecting elements to prevent electrical arc over and shorting.

SAFETY NOTE:
Factory designed access to all electrically charged high voltage components contain electrical interlocks for the safety of operating personnel. Any additional access that may be provided in the system, where there is access to high voltage, must be equipped with such interlocks. Interlocks are readily available from the factory.

Waterwash drain lines from the cabinet drain basin should be trapped or otherwise sealed against the system pressure (in accordance with local codes). Wash water to the unit must meet the volume required for the specific unit involved and must be between 40 PSIG Min. – 60 PSIG Max. at full flow to provide proper spray patterns from the wash nozzles. The wash water MUST be Hot water (140°F recommended) and installed as close as possible to the unit and detergent system.

NOTE: THE HOT WATER TANK IS NOT PROVIDED BY TRION.

Each installation varies according to needs, but normally the controller is located near the air cleaner. Ideal mounting height is at eye level for ease in reading the instrumentation and to facilitate service.

For ease in maintenance and component removal, adequate space, 39” Minimum Required, must be provided in front of all access doors, motors, pump and accessory equipment. Special consideration should be given in this respect for installations where the unit is suspended overhead. Catwalks or platforms should be provided.

CAUTION

In addition to the above space requirement, installation of the Model 75 in NFPA applications shall have a clearance of at least 18 inches to a combustible material, 3 inches to limited combustible material, and 0 inches to noncombustible material. Any reduction in clearance or exceptions must be in compliance with NFPA and acceptable to the Authority Having Jurisdiction.

WARNING!

Fire Suppression Systems

Extreme caution should be exercised when this unit is installed in applications that are collecting volatile or potentially flammable contaminants such as cooking grease and petroleum based oils.

Trion strongly recommends a fire suppression system be installed in the ductwork and on the Model 75 in cases where these contaminants are collected on the cell plates and collect on the attached ductwork.

Contact the factory for questions or concerns regarding a fire suppression system.

3. Outdoor Installations
Requirements for outdoor protection vary in accordance to climate and equipment component arrangement for the particular job. The best approach for equipment protection is the construction of a heated shed or building over the installation. As an alternative, the installing contractor should treat the equipment as required to meet the specific needs. Detailed discussions of the Model 75 components are as follows, using a rooftop installation as an example (refer to Figure 3):

Adjoining Ductwork (not supplied by Trion)
The ductwork located on the air entering side of the cabinet, between the point where it enters the roof and the cabinet, must be air tight to prevent the entrance of moisture, especially if it is under negative pressure. It must also be adequately insulated or other means taken to prevent the formation of condensation through temperature change. Condensation will short out the ionizing-collecting cells. Insulation must be of the outdoor variety.

Trion Model 75 Cabinet
The access doors on the Model 75 cabinet are gasketed and the unit is basically sealed against air leakage. The paint finish (epoxy) is for interior and exterior use. Like the air-entering duct, the cabinet must be insulated or other means taken to prevent condensation from taking place, which results in electrical shorting of the ionizing-collecting cells. Insulation, when employed, must be suitable for outdoor applications and when applied, consideration given to all access door openings and electrical interlock box covers. Trion will, upon request, install manifold drive motor covers for a cost adder.

Controller/PWM Power Supplies
As the controller/power supplies are designed for remote mounting, they can be, in many cases, located indoors and still be reasonably close to the main cabinet. If located outdoors with the cabinet, it must be weather protected. The enclosure is NEMA 12 rated and is not waterproof.

Drain Line
The drain line, located under the ionizing/collecting cell access door at the lowest point of the Trion cabinet drain pan, should be piped with as short a run as possible to the heated interior of the building. Preferably, straight down from the drain pan supply through the floor. The normally recommended drain line trap, to seal off the cabinet from the drain against the system pressure, should be located in the heated interior. If not installed in this manner, heat wrap or other means should be employed to prevent freezing. Clean-outs are recommended to be installed in all drain lines.

Wash Water Supply Line
Naturally, the length of the run between the Trion cabinet and the heated building should be kept to a minimum. Preferably the line would go through the roof directly below each of the two manifold headers. The strainer, solenoid valve and back flow preventer should be kept indoors. Installed in this manner, a dumping valve can be included in the supply line to drain the remaining water and prevent freezing. The normally open dumping valve should be energized to close when the water wash solenoid valve is energized to open. The strainer and solenoid valve are supplied by Trion. The dumping valve and back flow preventer or check valve are to be supplied by others.

If the above method is not employed, the supply line and manifold headers must be kept from freezing with heat wrap or other means.

Detergent System
The detergent system, designed for remote mounting, should be installed indoors and piped to the water supply line within the heated interior. Detergent feed line should be piped with as short a run as possible and inject into the wash water supply line as close as possible and upstream from the Model 75 header connection points. (Refer to Figure 3).
Contact the local Trion Sales Office or the factory if questions arise, or any additional information is required.

Model 75 Units With No Washing System

1. General Description
The standard major components supplied with each unit for installation are as follows:

electronic air cleaner
controller / power supplies

The electronic air cleaner contains the ionizing-collecting cells (collecting elements) and metal mesh pre-filters and after-filters. Perforated plate or impingement type mist suppressors, in lieu of the metal pre-filters, are options when specified.

Gasketed access doors located on one end of the cabinet, 90° to the direction of the airflow, provide entry for removal of the cells and filters. The location of the access doors may be specified as “right” or “left” handed. The hand designation is determined by standing in the ductwork on the air entering side of the unit so the airflow strikes your back.

The Pulse Width Modulated (PWM) power supplies, providing the necessary high voltage for the air cleaner and the controls are furnished in a NEMA 12 enclosure designed for remote mounting. The distance between the controller and unit must be determined as the interconnecting high voltage leads are furnished to the specified length. Consult factory for distances greater than 50 ft. Cables are not to be spliced at any point along their length. In addition, the enclosure is a central junction for the primary wiring.

2. System Design and Layout
The arrangement of the supplied components and the general layout of the system will vary according to application, adjoining equipment and available space. However, there are several basic factors pertaining to all installations that must be considered:

To maintain the selected cleaning efficiency, it is important to assure that the total air volume (capacity in CFM) is uniformly distributed across the entire face area of the unit. The metal mesh filters, perforated plate or mist suppressors; provide some resistance to effect even air distribution. However, since most air ducts are designed to handle air velocities greater than the rated velocity of the air cleaner, it is necessary to properly transition any attached ducting. If possible, a contraction ratio of 1 in 3 (approximately 20°) should be maintained. If space prohibits, turning vanes, air baffles or other means may be utilized. Ducting – where attached to the cabinet collars – should be gasketed, caulked or otherwise made watertight.

When there is a danger of rain, snow or debris being drawn into the system with outside air, the make-up air intake should be protected with rain louvers, hooding and hardware cloth to prevent the rain, snow or debris from entering the electronic air cleaner.

Contaminants to be collected – such as oils in vaporous state – must be condensed into particulate form prior to entering the ionizing-collecting cells in order to maintain the anticipated efficiency. Gases, vapors or any non-particulate cannot be precipitated and will therefore pass through the air cleaner. Any condensing that takes place downstream from the air cleaner defeats the purpose. By the same token, heavy concentrations of water vapor, or other matter that becomes highly conductive when condensed, must be prevented from entering and/or condensing in the collecting elements to prevent electrical arc over and shorting.

Drain lines from the cabinet drain basin should be trapped or otherwise sealed against the system pressure (in accordance with local codes). Each installation varies according to needs, but normally the controller is located near the air cleaner. Ideal mounting height is at eye level for ease in reading the instrumentation, and to facilitate service.

For ease in maintenance and component removal, adequate space, 39” Minimum Required, must be provided in front of all access doors, motors, pump and accessory equipment. Special consideration should be given in this respect for installations where the unit is suspended overhead. Catwalks or platforms should be provided.

CAUTION

WARNING!

Fire Suppression Systems

Extreme caution should be exercised when this unit is installed in applications that are collecting volatile or potentially flammable contaminants such as cooking grease and petroleum based oils.

Contact the factory for questions or concerns regarding a fire suppression system.

Links for Model 75

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