CaptiveAire KB10 User Manual

Pollution Control Unit Specification

Construction

PCU Series shall be factory assembled pollution control unit capable of significantly reducing smoke, grease and odor
from the exhaust air stream.

Housing: The PCU housing is to be constructed of 430 SS of polish 2B or better. All metal in contact with the air-stream is
to be constructed of 430 SS. 1500°F Ceramic based gasket must be in place for all internal seams exposed to airflow.
High temperature weatherproofing gasket must be used on all exterior seams. A 1 ½” NPT drain is to be installed in the
base of each module of the unit to aid in cleaning. An airflow switch must be installed in the final compartment of the PCU
to enable an indicating light.

Base: The base shall be constructed of galvanized steel for improved rigidity. Base shall be structurally reinforced to
accommodate the filter assembly.

Pre-Filter Section: The pre filter section shall include 4 inch deep steel washable permanent filters. Filter frames and
media shall be constructed of steel. Filters shall be arranged in a v-bank configuration to increase filter area and reduce
static pressure. All filters shall be removable without the use of tools through side access doors with lift and turn latches.
Filters are to be cleanable with a water hose and soapy water. The filters shall have a minimum average arrestance of
75% in accordance with ASHRAE 52.1-1992.

High Efficiency Filter Section: The phase two filters shall consist of 4 inch deep rigid cell extended surface filters. Filter cell
sides shall be constructed of high strength, high impact polystyrene plastic for durability. Beverage board filter sides shall
not be permitted. Filters shall be arranged in a v-bank configuration to increase filter area and reduce static pressure. All
filters shall be removable without the use of tools through side access doors with lift and turn latches. Filters are to be
rated MERV 14 minimum in accordance with ASHRAE standard 52.2 and have a minimum average arrestance of 98% in
accordance with ASHRAE 52.1-1992. High Efficiency module must be installed downstream of pre-filter module.

Odor Control Media Section (Optional): The unit shall be provided with a 50% potassium permanganate 50% carbon
blend (100% permanganate) (100% carbon) (Caustic impregnated) media. The odor removal cartridges shall be encased
in steel frames. The odor removal media shall be arranged in a v-bank configuration to increase filter area and reduce
static pressure. All media shall be removable without the use of tools through side access doors with lift and turn latches.
Odor control module must be installed downstream of High Efficiency module or HEPA module.

Fire Damper (Optional): A fire damper shall be installed into the intake of the Odor Control Media section to prevent the
spread of flames through the Pollution Control Unit. The damper must be capable of 1 ½ hour fire rating and must be set
to activate at 285° F. The use of this damper will require the deactivation of the fan during a fire condition.

Certifications

The PCU Series has been certified by ITS. This certification mark indicates that the product has been tested to and has
met the minimum requirements of a widely recognized (consensus) U.S. and Canadian products safety standard, that the
manufacturing site has been audited, and that the applicant has agreed to a program of periodic factory follow-up
inspections to verify continued performance. Models PCU are ETL Listed under file number 3130718COL-001 and comply
with UL710 Standards and ULC710 Standards.

Typical Installation

Typical Installation of Air Pressure Switch

Switches are preset from plant to 0.15” w.c. above the internal static pressure of the PCU with clean filters. The Air
pressure switch is located in the downstream filter module. Route wiring from hood control panel to PCU using ½” conduit
through quick seal located near lower right area of filter module containing switch. Use existing conduit in module to route
wires from exterior of module to switch. Install wiring according to label above switch. Be sure all conduit fittings are tight.
Once filters become clogged, switch closes illuminating light in kitchen. User should then clean or replace filters as
required.