Improper installation, adjustment, alteration service or maintenance can cause property damage, injury or death. Read
the installation, operation and maintenance instructions thoroughly before installing or servicing this equipment. Only
trained and qualified service personnel should install or service this equipment.
CAPTIVE-AIRE SYSTEMS, INC.CAPTIVE-AIRE SYSTEMS, INC.
CAPTIVE-AIRE SYSTEMS, INC.
CAPTIVE-AIRE SYSTEMS, INC.CAPTIVE-AIRE SYSTEMS, INC.
ALL RIGHTS RESERVED. NO PART OF THIS BOOK MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM, OR TRANSMITTED IN ANY
FORM BY AN ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING MEANS OR OTHERWISE WITHOUT THE WRITTEN PERMISSION
OF CAPTIVE-AIRE SYSTEMS, INC. COPYRIGHT 2004.
The manufacturer reserves the right to modify the materials and specifications resulting from a continuing
program of product improvement or the availability of new materials.
The Captive-Aire Unit is designed and engineered by
CAPTIVE-AIRE SYSTEMS, INC.
360 Northbrook Drive, Y oungsville, North Carolina 27596.
ST ART -UP INSTRUCTIONS.......................................................................31
C-TPF ST ART -UP INSPECTION REPORT ................................................32
WARRANTY........................................................................Inside back cover
4
INTRODUCTION
ir quality is a major concern in many large cities world
A
wide, particularly in America. As a result, many commercial kitchens will require pollution control equipment in their
exhaust systems to comply with the increasing demands of
environmental control agencies. In addition, pollution control
equipment is being used for kitchens in high-rise buildings allowing the exhaust to discharge out the side of the structure
which saves the cost of running the duct up many floors to the
roof.
Smoke pollution control, in kitchen exhaust systems, has typically been accomplished by any one of the following methods:
gas fired incinerators, scrubbers, filtration units or electrostatic
precipitators (C-ESP). Incinerators and afterburners literally burn
the pollutants and, while effective, can be very costly and hazardous to operate. Scrubbers consist of a water bath and extraction baffles to remove the pollutants and, though quite effective on grease removal, they typically require the addition of
high efficiency filters to abate smoke below control agencies’
standards. Filtration units use a series of impingement filters to
remove the pollutants and if done properly can be quite effective
on both smoke and grease.
Captive-Aire offers two types of pollution control equipment:
the C-TPF Series (triple pass filter) detailed in this manual
and the C-ESP Series (electrostatic precipitator) detailed in
the C-ESP Series brochure. When initial cost is a greater
concern, the C-TPF unit is a sound alternative.
The C-TPF unit is available in several configurations, as illustrated on the following pages, ranging in capacity from
1000 to 32,000 CFM (472 to 15,102 L/s). Most models can
include an exhaust fan and odor abatement equipment as
an option.
Basic Facts About Smoke
Smoke particles are extremely small and not visible to the
human eye unless thousands of them are grouped together
to form what we see as smoke. Individual particles are measured in units called microns and one micron equals 1/25,400
of an inch (1/64,516 of a cm).
Smoke generated by commercial cooking equipment has a
particulate size of between 0.3 and 0.8 microns and it is
these very small particles that smoke abatement equipment
must remove from the airstream. The amount of smoke being discharged from a kitchen exhaust duct is measured in
terms of its density, referred to as opacity - the degree to
which emissions block light. A 100% opacity level would be
solid black and 0% would be perfectly clear. Control agencies that have adopted smoke pollution ordinances are requiring an opacity level of no more than 20%, which is a very
light blue smoke.
Typically, heavy smoke producing cooking such as charbroiling, creates an opacity level of 60% to 70%. Opacity
readings are taken by the human eye by viewing the smoke
being discharged and then assigning a percentage of opacity to what is seen. Though this method is quite subjective,
it is the method practiced by control agency inspectors who
are trained and certified in determining opacity percentages.
Other more technical methods of determining opacity or par-
ticulate density are achieved through the use of opacity meters
and cascade impactors. This level of analysis is usually referred to as source testing. Control agencies occasionally
require this type of analysis and if so, the testing is conducted by state certified contractors which can be quite costly
and time-consuming. The efficiency of a C-TPF is based on
how well it reduces the opacity level of a given airstream.The
Captive-Aire unit will reduce the opacity level below 20%,
thereby meeting the requirements of environmental control
agencies.
Basic Facts About Odor
Cooking odors (molecules) generated by the combustion of
animal and vegetable matter result in an extremely complex
mixture of reactive organic gases (ROG’s). A small percentage of
these odors may be absorbed by the grease particles but the
vast majority exist separately in the airstream. The ROG molecules are much too small to be removed by any type of filter and
therefore, other methods must be used. There are several methods with which to manage the odor. One method is to use a
media bed. The two most popular types of media bed are activated charcoal, which absorbs and retains the odor molecules,
and the use of an odor-oxidant media (potassium permanganate) which oxidizes the molecules to solids and then retains them.
The other method involves the use of a liquid delivered with a finely
atomized spray. This spray performs a similar function to potassium permanganate in that it adsorbs or chemically neutralizes
odors. This process has the benefit of the end user being able to
adjust the amount of spray and thus the effectiveness and cost of
the odor control.
The life of the media bed type of odor control is dependent
upon several factors such as how much media is used, type
of odor, amount of odor molecules, grease loading and air
temperature. Typically, any of the above mentioned types of
media can remove 85% - 90% of the molecules. Determining
the efficiency of odor control can be very subjective, as testing
is usually conducted by the human nose. More scientific testing is available through ROG analysis, but this involves considerable costs.
Grease Removal - The Important First Step
Grease particles are also measured in terms of microns and
grease generated by commercial cooking equipment has a
particulate size of 10 microns and up. Pollution control equipment is not limited to removing smoke particles, but will also
remove a majority of the grease particles remaining in the
airstream. Therefore, the grease extraction efficiency of the
exhaust hood plays an important role in the operation and
performance of pollution control equipment.
Removal of grease particles before they reach smoke and
odor control equipment will significantly increase the smoke
abatement efficiency and the life of the odor abatement media. It is highly recommended that a Captive-Aire Ventilator be
used with the C-TPF unit as it has a grease extraction efficiency of 95%. Other high efficiency exhaust hoods and standard filter type hoods may be used with the unit. Contact Captive-Aire Systems for details.
5
SPECIFICATIONS
General
Furnish one (1) Captive-Aire Pollution Control Unit model CTPF series as manufactured by Captive-Aire Systems, Inc. of
Y oungsville, North Carolina in accordance with the following:
The pollution control unit shall consist of a smoke control
section, odor control section (optional) and an exhaust fan
section (optional) all built on a common base as an integral
unit. Smoke control shall be accomplished by a three stage
high efficiency filter section (C-TPF). The unit shall be ETL
listed and labeled.
Smoke Control Section
The smoke control section shall have three phases of filters
The filters shall consist of replaceable 30% pre-filter, 95%
bag filter and a replaceable 99% final filter. Replaceable filters shall be mounted in filter slide tracks to prevent air bypass around the ends of the installed filter bank. Filters shall
be accessed through removable side access panels with lift
and turn latches.
Phase one filters shall have an average efficiency of 25 to
30% and an average arrestance of 90 to 92% in accordance
with ASHRAE test standard 52.1-1992. Media support grid
shall be on 1" centers with an open area 96%. Filter enclosing frame shall be a rigid, high wet strength beverage board,
with diagonal support members 4" deep.
Phase two filters shall have an average efficiency of 90 to
95% in accordance with ASHRAE test standard 52.1-1992.
Sealing surface and pocket retainers shall be configured to
provide 84% open area. Seams in bag filters shall be sealed
with foamseal adhesive to completely eliminate air leakage
through stitch holes.
Phase three filters shall be 95% efficient on .03 micron particles (DOP smoke test), 97% efficient on nebulized staphylococcus aerosols, 99+% efficient on atmospheric test dust
(ASHRAE standard 52.1-92). The casing shall be 16 gauge
steel with corrugated aluminum separators to insure media
stability. Media shall be fine-fiber, high strength
microfiberglass paper. Media end cut s shall be encapsulated
in urethane potting adhesive.
Fire Detection
A thermostat, set at 250o F, shall also be located in the filter
section to shut down the exhaust fan in the event of a fire.
Optional Fire Damper for use in Canada
The unit shall include a UL listed fire damper, with a 280o F
fusible link, located downstream of the filters to prevent passage of fire to the duct downstream of the unit
Filter Monitoring Panel
A monitor panel, for remote location, shall be supplied for the
operation and monitoring of the unit. The panel shall be constructed of 18 gauge stainless steel, number 4 finish, and be
suitable for surface or recessed mounting. The panel face
shall be a hinged door with a lift and turn flush latch. The
panel shall include an air proving time delay , relays and indicator lights to continuously monitor the unit. Indicator lights
shall be “Fan On”, “Normal Air”, “Low Air”, “Replace Pre-Filters”, “Replace Bag Filters”, “Replace Final Filter”, “Missing
Filter”, and “Fire In Unit”. An audible alarm, with an alarm
cancel button, shall be included and shall activate whenever
the unit status is low air, replace filters, missing filters or fire
in the unit. Status other than “Fire In The Unit” shall not shut
down the exhaust fan.
Specifier Note: If the C-TPF unit is used in conjunction with a
water wash ventilator, the monitor p anel is built into the main
water wash control cabinet model CGPC-6000 series.
Odor Control Options
Media bed of 50/50 Blend Potassium Permanganate and
Carbon Blend
The unit shall be provided with odor control utilizing a media
bed of 50% potassium permanganate 50% carbon blend. The
odor removal media shall be housed in slide out reusable steel
modules. There shall be a 30% pleated media after filter located immediately downstream of the odor control media. Replaceable filters shall be mounted in filter slide tracks to prevent air bypass around the ends of the installed filter bank. The
odor control media and after filters shall be removable through
side access doors with lift and turn latches.
Spray Odor Control
The unit shall be provided with a spray odor control system
utilizing an odor neutralizer chemical. The odor spray control cabinet shall be mounted on the side of the unit and
shall contain a liquid spray compressor piped to the spray
nozzle in the fan plenum, adjustable delay timers with fuse
protected circuitry factory wired to the unit electrical panel.
The cabinet shall include one 5 gallon container of Formula
GS-710 Odor Neutralizer. The cabinet shall cont ain a heater
to prevent freezing of the odor neutralizer.
Exhaust Fan Options
Exhaust Fan (Standard Centrifugal Fan)
The unit shall include a centrifugal exhaust fan. The exhaust
fan shall be an SWSI upblast arrangement #9 or #10 with a
non-overloading BI or AF wheel. The motor, drives, bearings
and fan mounting base shall be located out of the exhaust
air stream as required by the IMC (International Mechanical
Code) and NFP A-96. The fan shall be AMCA certified and
bear the AMCA seal for performance. The fan housing shall
be constructed of heavy gauge steel. The fan bearings shall
be heavy duty self-aligning pillow block type rigidly mounted
on heavy structural steel supports. The motor shall be ODP
three phase mounted on a common base with the fan and
shall be pre-wired to the electrical cabinet located on the
unit. The electrical cabinet shall include a disconnect switch,
motor starter, overloads and fuses. The factory provided drive
assembly shall be adjustable pitch on 5 HP and smaller,
fixed pitch on 7.5 HP and larger . It shall also be sized for a
minimum 1.5 service factor. After final system balancing,
fixed pitch sheaves shall be provided and installed by the air
balancing contractor to provide proper flow at actual installed
conditions.
Exhaust Fan (Optional Tubular Fan)
The unit shall include a tubular centrifugal exhaust fan. The
exhaust fan shall be an arrangement #10 with a non-overloading BI, AF wheel. The motor, drives, bearings and fan mounting
6
SPECIFICATIONS
base shall be located out of the exhaust air stream as required
by the IMC (International Mechanical Code) and NFPA-96. The
fan shall be AMCA certified and bear the AMCA seal for performance. The fan housing shall be constructed of heavy gauge
steel. The fan bearings shall be heavy duty rigidly mounted on
heavy structural steel supports. The motor shall be ODP three
phase mounted on a common base with the fan and shall be
pre-wired to the electrical cabinet located on the unit. The electrical cabinet shall include a disconnect switch, motor starter, overloads and fuses. The factory provided drive assembly shall be
adjustable pitch on 5 HP and smaller and fixed pitch on 7.5 HP
and larger. It shall also be sized for a minimum 1.5 service factor.
After final system balancing, fixed pitch sheaves shall be provided and installed by the air balancing contractor to provide
proper flow at actual installed conditions.
Exhaust Fan Housing
The exhaust fan section of the unit shall be enclosed with the
same material as the smoke control section. There shall be
a removable panel for access to the fan.
Unit Construction
The unit housing shall be constructed of a minimum of 16
gauge G90 bright galvanized steel. The perimeter base shall
be 12 gauge formed channel with lifting lugs at each corner
and along the length as required. The internal housing shall
be externally welded liquid tight for compliance to the International Mechanical Code and NFPA-96 grease duct construction requirements.
Fire Extinguishing System Options
Specifier Note: NFPA-96 requires a fire extinguishing system for protection of the smoke and odor control sections
and protection of the duct down stream of any filters or dampers. Not all authorities having jurisdiction require protection.
Check with your AHJ. If required, specify one of the following
systems.
Wet chemical system
Provide a complete factory mounted Ansul wet chemical fire
extinguishing system, including nozzles piping and detection runs. Pipe penetrating the unit cabinet shall use a UL
listed fitting. System shall be installed in accordance with
the systems listing and NFP A-96. The Ansul Automan cabinet shall be mounted on the side of the unit for easy access,
certification and service.
Water spray sprinkler fire system
Specifier Note: Units that are located indoors may be factory
pre-piped for a wet pipe building sprinkler system.
Check Out and Demonstration
Upon completion of installation, the entire pollution control
system, including the kitchen exhaust hoods, shall be commissioned by a factory certified service technician. Start-up
shall include checking all filters, filter monitoring station, odor
control and exhaust fan. The appropriate maintenance personnel shall be given a technical manual and a complete
demonstration of the system, including operation and maintenance procedures. Upon completion of the commissioning, a detailed start-up report shall be made available to the
architect and owner certifying proper system operation.
Changes required in fan drive components shall be performed
by the air balancing contractor under the direction of the factory certified person(s) performing the start-up.
FIL TER MONITORING ST A TION
CFM-100
Green
Green
Clear
Clear
Clear
Clear
Red
Red
Red
Provide a pre-piped water spray fire system installed in accordance with NFP A-96. The unit shall be piped with one pendent type sprinkler nozzle located in the smoke control section, one in the odor control section, if equipped with 50/50
media bed, and one in the exhaust fan section for interconnection to the building sprinkler system by the appropriate trades.
Pipe penetrating the unit cabinet shall use a UL listed fitting.
Nozzles shall be the bulb type rated at 325o F.
7
MODEL NUMBER EXPLANATION
The assigned model number of a C-TPF unit will indicate the number of Filter Banks and if it has spray odor control, single or
double pass odor control, if it has an exhaust fan plus other data. The following example shows the make-up of a model number .
The model number of your unit along with other data can be found on the nameplate which is attached to the electrical
control panel on the unit. Refer to page 24.
Standard Prefix Series of ClearAirTM System (Remote Smoke Pollution Control)
Triple Pass Filter
Filter Configuration (W x H) - 1x1, 2x1, 3x1, 2x2, 3x2, 4x2, 3x3, 4x3, 3x4, 4x4
Odor Control Option:
SO = Single Pass Odor Control
DO = Double Pass Odor Control
SPO = Spray Odor
T otal CFM (1000 - 32,000)
Exhaust Fan Option:
EFS = Exhaust Fan, unhoused, spring isolated
EFN = Exhaust Fan, unhoused, not spring isolated
EFHS = Exhaust Fan, housed, spring isolated
EFHN = Exhaust Fan, housed, not spring isolated
(BLANK) = No Exhaust Fan
Fan T ype = C (Centrifugal), T (T ubular)
Fan Size (ie. 100 - 490)
Fan Motor H.P. (ie. 1 - 75)
Hand - R = Right Hand
L = Left Hand
C - TPF -3x2 - DO -CFM - EFN - C -300 -15 - R
BLOCK 1 2 3 4 56 7 89
All Blank, if no exhaust fan
8
TYPICAL INSTALLATION
9
SAMPLE C-TPF CONFIGURATIONS
The C-TPF unit is available in sizes ranging in capacity
from 1000 to 32,000 CFM (472 to 15,102 L/s). Each unit
is equipped with Three Phase Filters for smoke control,
and may include an exhaust fan, odor abatement equipment and Quencher System, or Ansul System as an option. The following illustrations are examples of the most
common configurations.
C-TPF
SMOKE CONTROL ONL Y
KEY
AF= 30% After Filter
BF= 95% Bag Filter
DO = Double Pass Odor