Trion Air Boss KES Info for System Design Engineer

DESIGN - FOR THE SYSTEM DESIGN ENGINEER

1. General description

The standard major components supplied with each KES kitchen exhaust filtration system are as follows:

• Electronic air cleaner/ media absorber cabinet

• Power supply(s) and status LED(s)

• Junction box

The electronic air cleaner cabinet contains split ionizer and collecting cells (collecting elements), perforated plate pre-filters and metal mesh after-filters. Perforated plates, in lieu of the metal after-filters, are optional when specified.

The standard electronic air cleaner cabinet is equipped with a media section for housing an optional 95% DOP – rigid pleat filter and or an odor absorption module.

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.

All KES cabinets are 2” (51 mm) double wall insulated on the top and two sides and are welded to a 3” (76mm) unitary mounting rail.

The pulse width modulated (pwm) power supply-s, providing the necessary high voltage for the air cleaner and power supply status LEDs are furnished in an enclosure on the ionizer/ cell access door.

The junction box is located on top of the cabinet and above the ionizer and collector cell access door. The junction box contains terminals for a single point wiring connection.

Other options available with KES are as follows:

• Remote mounted control box containing an on/ off switch, power supply status light, relay for connection to an exhaust system, fan starter and power supply shut-down relay for a fire condition

• UL 762 fan for restaurant exhaust, suitable for outdoor installation

• Fire suppression pre-piping

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 are of the unit. The perforated plate and metal mesh filters 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 liquid tight and in compliance with NFPA 96 and any other local code requirements

Contaminants to be collected, such as oils in vaporous state, must be condensed into particulate form prior to entering the ionizer and collecting cells in order to maintain the anticipated efficiency. Gases, vapors or odors 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.

Each KES system is supplied with tw, 2” NPT cabinet drain couplings (see fig 1& fig 2). Each coupling is plugged at the factory. During installation, clearance to access these clean-out drain couplings must be considered. It is recommended that the drain couplings be piped off to an acceptable catch basin. Drain pipe lines from the cabinet drain should be trapped or otherwise sealed against the system pressure (in accordance with local codes). For ease in maintenance and component removal, adequate space, 32” (813mm) Minimum Required, must be provided in front of all access doors. Special consideration should be given in this respect for installations where the unit is suspended overhead. Catwalks or platforms should be provided.

3. Outdoor Installations

The KES system is suitable for outdoor installation. Requirements for outdoor protection vary in accordance to climate and equipment component arrangement for the particular job. The installing contractor should treat the equipment as required to meet the specific needs. Detailed discussions of the KES components are as follows, using a rooftop installation as an example.

Adjoining duct work (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 liquid-tight and installed in accordance with NFPA and any other local code requirements. It must also be adequately insulated or other means must be taken to prevent the formation of condensation through temperature change. Condensation will short out the ionizer and collecting cells. Insulation must be of the outdoor variety.

TRION KES Cabinet
The access doors on the KES cabinet are gasketed and the unit is sealed against air leakage. The paint finish/ enamel is for interior and exterior use. The cabinet is double-wall, weather tight construction with 2” (51mm) thick- 8lb/ft³ density mineral wool insulation on the top and two sides.

Drain Line
The drain line, when piped from the cabinet drain coupling, should be trapped or otherwise sealed against the system pressure and sloped to allow for maximum drainage. The drain line should be trapped to seal off the cabinet from the drain against the system pressure and should be located in the heated interior. Failure to provide sufficient slope on drain lines will resulting in spoor drainages, poling of liquid in the cabinet and possible system failure. Drain line pipe runs 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. If not installed in this manner, heat wrap or other means should be employed to prevent freezing. It is recommended that cleanouts be installed in all drains.