AAF HFS800C Manual

Better Air is Our Business ®
Table of Contents
1.0 General Information
2.0 How To Determine the Required Number of Air
Filtration Devices (AFD)
3.0 Electrical and Safety Requirements
4.0 Key Components
5.0 Touch Pad Control Panel for HFS800C
6.0 Before Installing the Units
7.0 Location and Modes of Operation
8.0 Installation
9.0 To Operate the HFS800C With Touch Pad Control Panel
10.0 Filter Loading Indicators
11.0 Filter Replacement
12.0 Filter Change Procedures
13.0 Specifications
14.0 Airflow Ratings
15.0 Troubleshooting Guide
16.0 Component Replacement and Care of the Unit
17.0 Certification of HEPA Filtration System
18.0 Limited Warranty
19.0 Limitation of Liability
Read and Save These Instructions!
NOTE: 1. Read and understand all operating instructions before
installing and using the HFS800C Ceiling Mounted HEPA
Filtration System.
2. Save this manual for future reference.
This instruction manual provides important information on the
installation and operation of the AAF International HFS800C Ceiling
Mounted HEPA Filtration System. These instructions must be carefully
followed in order to operate the unit safely and correctly. If there are
any questions regarding the use or care of this unit, please contact
AAF at 888.AAF.2003 for assistance.
AAF strongly recommends users of this product to follow the most
recent guidelines and/or standards published by the Occupational
Safety and Health Administration; Centers for Disease Control and
Prevention; Environmental Protection Agency; American Society of
Heating, Refrigerating and Air Conditioning Engineers, and all other
federal, state, provincial, and local regulations.
AAF has published a User Application Guide (available upon request)
to assist in the effective use of air filtration devices in health care
facilities. Health care facility personnel are urged to read this document
thoroughly and save it for reference purposes.
1.0 General Information
The HFS800C unit incorporates HEPA (High Efficiency Particulate Air)
filtration which provides the most effective mechanical filtration method
available. In addition to providing HEPA filtration, the HFS800C is
primarily used in a negative pressure and/or recirculation mode. A
negative pressure condition is created in order to confine contaminated
airborne particles. This condition exists when the static pressure inside
the room containing the unit is lower relative to the pressure of the
environment outside the room. The static pressure differential is
created and maintained by continuously exhausting air out of a given
room at a faster rate than air enters the room from all other sources. In
the recirculation mode, all or part of the filtered air is exhausted back
into the room containing the unit.
NOTE: The HFS800C is equipped with a touch pad control panel.
Carefully read the sections of this instruction manual that describe
how to operate the unit using the touch pad control panel.
HFS800C Ceiling Mounted
HEPA Filtration System
Installation, Operation, and
Maintenance Instructions

2
2.0 How To Determine the Required Number of Air
Filtration Devices(AFD)
1. Calculate the total air volume (V) in cubic feet (ft3) within the
enclosed containment area by multiplying the length (L) x
the width (W) x the height (H), all in feet (V= L x W x H).
2. Determine the minimum number of air changes per hour (ACH)
specification. When no ACH number is specified, most users target
at least 6 ACH for construction areas. Building in a safety factor to
compensate for filter loading, duct losses, reduced voltage, and
other factors that can reduce actual installed airflow is a good
practice. For example, if 6 ACH is the objective, you might design
for 8 ACH.
3. Select an air filtration device (AFD) model and determine the peak
airflow rating for that model in cubic feet per minute (CFM).
4. Determine the total number of AFD required using the following
formula:
Quantity = (V x Design ACH / AFD Rating x 60)
5. Always round up to the next whole number. For example, if the total
number of AFD required is 2.13, 3 units are recommended, not 2.
Example:
How many air filtration devices (each with 600 CFM rated airflow)
would be required to provide 8 ACH (including a safety factor) in a
40' L x 24' W x 10' H containment area?
1. V = 40' x 24' x 10' = 9,600 ft3
2. Design ACH = 8
3. Quantity of AFD required = (9,600 ft3x 8 ACH) / 600 CFM x 60) =
76,800/36,000 = 2.13 = 3 units
3.0 Electrical and Safety Requirements
1. The HFS800C requires a minimum of 110 volts AC, 60Hz to
operate properly; however, maximum airflow performance requires
120 volts AC, 60Hz. The unit requires a 15 ampere circuit that is
free of other loads.
2. Check to ensure that any circuit to which the unit is connected is
protected by a 15 ampere circuit breaker.
3. The unit should be wired by a qualified and licensed
electrician in accordance with local, NEC, and CEC
electrical codes.
CAUTION: As with any piece of electrical equipment, always make
sure that the unit is turned “OFF” prior to hard-wiring the unit to its
control panel or the building electrical system, or disconnecting it from
its control panel or power source. Failure to do so will cause “arcing”
and could result in personal injury, fire hazards, and/or damage to the
unit. Do not disconnect the unit from its power source while the unit
is operating.
WARNING: To reduce risk of electrical shock, do not expose the unit
to water or rain. Do not touch the electrical outlet or wiring with wet
hands or while standing on a wet or damp surface.
WARNING: Risk of electrical shock! Can cause injury or death! Turn
unit “OFF” and disconnect power supply before replacing the HEPA
filter and before cleaning or servicing the unit.
WARNING: The HFS800C is equipped with automatic restart
motorized impellers that will restart without warning after a temporary
power interruption or recovery from a thermal overload (over-heating)
condition. Keep clear of the motorized impellers at all times to reduce
the risk of injury.
WARNING: To reduce the risk of fire or electrical shock, do not use
this unit with any solid state speed control device. Do not use in a
cooking area.
WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK,
OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
a) Use this unit only in the manner intended by AAF. If you have
questions, contact AAF at 1-888-223-2003.
b) Before wiring, installing, cleaning or servicing unit, switch power
“OFF” at service panel and lock the service disconnecting means
to prevent power from being switched “ON” accidentally. When the
service disconnecting means cannot be locked, securely fasten a
prominent warning device, such as a tag, to the service panel.
Always follow the instructions in a) and b) above before replacing
the HEPA filter.
CAUTION: The HFS800C is designed for indoor use only.
CAUTION: For General Ventilating Use Only. Do Not Use To Exhaust
Hazardous Or Explosive Materials And Vapors.

3
HEPA filter Prefilter
(inside filter retention
channel on filter access door)
Filter
Access
Door
Corner Exhaust
Outlet with Round
Collar in Place
(8x12 Grille)
Corner Exhaust Outlet with
Round Collar in Place
Figure A. Model HFS800C Side View - Unit Suspended From Ceiling Model HFS800C End View
Motorized Impellers
WARNING: AAF HEPA Filtration Systems are not intrinsically safe for
use in hazardous environments. Always consult a certified industrial
hygienist before using them. Do NOT use this equipment in any
atmosphere that is or may be immediately dangerous to life or health
(IDLH), combustible, flammable, explosive, oxygen deficient, and/or
contains odors, vapors, gases or particulates that exceed permissible
exposure levels. Such atmospheres may require the use of
intrinsically safe equipment, specific engineering controls, and
personal protective equipment in accordance with Occupational
Safety and Health Administration (OSHA), Environmental Protection
Agency (EPA), Canadian Standards Association (CSA), and other
federal, state, provincial, and local regulations.
WARNING: This equipment is not classified as “intrinsically
safe” and should not be used in the following hazardous locations as
defined by the Underwriters Laboratories: Class I Division 1, Class I
Division 2, Class I Zone 0, Class I Zone 1, Class I Zone 2, Class II
Division 1, Class II Division 2, Class III Division 1, Class III Division
2. Refer to the UL web site: http://www.ul.com/hazloc/define.htm.
4.0 Key Components - Refer to Figure A
Filters
• Prefilter - Pleated particulate filter that protects and extends
the life of the more expensive HEPA filter. The prefilter for the
HFS800C has an ASHRAE MERV 8 rating and is treated with an
EPA registered antimicrobial agent.
An optional carbon prefilter (must be purchased separately) for
capturing low concentrations of odors, vapors, gases, and volatile
organic compounds, collectively known as OVG, is also available.
Carbon filters reduce airborne OVG by chemically bonding the OVG
molecules to the surface area of the carbon granules, via a process
known as adsorbtion.
NOTE: To capture low concentrations of OVG, a carbon filter must
be used. The particulate filters in the HFS800C do not remove
odors, vapors, or gases, including volatile organic compounds.
• HEPA - The HEPA filter for the HFS800C has an efficiency rating
of 99.99% in removing 0.3 micron size particles and incorporates
a special gel seal to prevent leakage.
Motorized Impellers - pull air through a clean set of filters.
Circuit Breaker - Provides protection for the unit’s electrical
components. The circuit breaker is mounted to the front of
the HFS800C cabinet.
Circuit
Breaker
Rear
Exhaust
Outlet

4
5.0 Touch Pad Control Panel for HFS800C -
Refer to Figure B1
The three LED lights on the left side of the control panel indicate
the following:
Top
• Power ON - Green light that illuminates when unit is connected to
electrical power supply.
Middle
• Change HEPA - Red light that will flash if there is excessive loading
of the HEPA filter, indicating that HEPA filter change procedures
should be followed.
Bottom
• Change Prefilter - Red light that will flash if there is excessive
loading of the prefilter, indicating that prefilter change procedures
should be followed.
The functions of the touch pad control panel keys are as follows:
Speed Setting
• Set Motor speed from #1 (lowest) to MAX (highest).
• Turn unit “OFF”.
Menu
• Cycle through each menu item.
Figure B1: HFS800C Touch Pad Control Panel
IMPORTANT:
This device should be
operated by qualified
personnel only. Read and
understand the operating
manual prior to use.
Password entry is
required to turn this
device on and off or to
change the airflow
settings.
Scroll
• Move vertically among various menu options. When the SCROLL
key is pressed, arrows will bracket the various menu options.
Back
• Back out of current screen and return to previous or main screen.
Enter
• Select the menu option bracketed by the scroll arrows.
Password Entry Keys
NOTE:
1. Unit is shipped with the password feature enabled.
2. The default password is: 9-1-1; however, this password can be
changed.
3. Password is used to “lock-in” various control panel settings and
prevents them from being tampered with or changed.
4. If the password is forgotten and/or lost, the factory preset password
will have to be entered as follows: 3-0-0-2-4.
5. After entering a password, always press ENTER.
Status
Power ON
Change HEPA
Change Prefilter
Green
Red
Red
Airflow Settings
Password Entry

5
6.0 Before Installing the Units
Inspect the filters for any material or structural damage prior to use
and replace any damaged filters before operating the unit.
An optional (not included with unit) round exhaust collar is available
that accepts 8" diameter rigid or flexible ducting and fits over both the
corner and rear exhaust outlet grills of the HFS800C. The collar slides
in over the exhaust outlet grills and is secured by offset tabs and
machine screws.
As with any air filtration system, airflow losses not attributable to
the HEPA Filtration System will reduce the airflow of the system. The
following recommendations can facilitate user installation and
minimize airflow losses created by external static resistance.
1. Always use the minimum length of ducting possible with the
fewest possible number of turns and bends.
2. Rigid metal ducting creates less turbulence and consequently less
airflow loss than flexible ducting. Regardless of the type of ducting
used, rigid “sweep-type”, radiused connections should be used for
all turns and bends.
3. If flexible ducting is used, it must be kept as taut as possible to
avoid “pancaking” or flattening.
4. Louvers, dampers, and other external control devices should be
sized to provide the equivalent open area to the cross sectional
area of the exhaust duct.
5. When utilizing the HFS800C for negative pressure applications,
airflow and air changes per hour are maximized by utilizing both
the corner and rear exhaust outlets.
6. For negative pressure applications, the total volume of air supplied
to the room must be lower than the volume of air exhausted by the
air filtration unit. The minimum recommended differential is the
greater of 100 CFM or 10%. Negative pressure levels should be
continuously monitored.
NOTE: If the air supply to the room is not controlled, sufficient
negative pressure might not be achieved.
7.0 Location and Modes of Operation
The HFS800C unit can be used in various modes of operation. The
unit is designed to be suspended in a standard 2 foot x 4 foot drop
ceiling grid. Refer to Figure C
The modes of operation are as follows:
1. Negative pressure - all of the filtered air is exhausted to an external
environment, or re-circulated within the facility if allowed by federal,
state, local, and facility ventilation codes. The other exhaust outlet
can be sealed with the solid cover plate or used as a second
exhaust outlet.
2. Negative pressure and recirculation - approximately 50% of the
filtered air is exhausted through one outlet and the other 50% is
re-circulated back into the room through the other outlet.
3. Full in room recirculation - all of the filtered air is re-circulated back
into the room through both exhaust outlets.
8.0 Installation
NOTE: Access above the ceiling is required for installation
and servicing.
NOTE: This ceiling-mounted unit is not recommended for contact with
insulation materials. Make sure there is at least 6" of air space around
the entire outside surface of the unit.
NOTE: Installation must be performed by qualified maintenance
personnel only. All wiring must be done by a qualified and licensed
electrician in accordance with local, NEC, and CEC electrical codes.
WARNING: Risk of electrical shock! Can cause serious injury or
death! Make sure the unit is turned “OFF” and disconnected from
power supply during the wiring and installation process. Read and
follow all warnings and cautions in the “Electrical and Safety
Requirements” section of this instruction manual before wiring
and installing unit.
WARNING: Risk of electrical shock! Can cause serious injury or
death! Turn the electrical power switches and circuit breakers for
the HVAC system “OFF” before connecting the unit to any part of
the HVAC system, including air ducts. Check to ensure that the unit
is turned “OFF” and disconnected from electrical power source while
being connected to HVAC system.
CAUTION: When installing the unit, always wear the proper personal
protective equipment (particularly eye and hand protection) and follow
safe work practices in accordance with federal, state, local, provincial
and employer regulations. Be extremely careful when handling sheet
metal during installation because serious injury could result from
coming in contact with sharp edges.
Refer to Figure C, and the various wiring diagrams and
schematics in this instruction manual before hard-wiring or
installing the HFS800C.
As stated previously; the HFS800C ceiling mounted unit fits in a 2 foot
x 4 foot drop ceiling grid.
1. Remove the rear panel of the unit (held in place with Phillips head
screws) to gain access to the unit’s electrical wiring and terminal
block. The terminal block is located inside the cabinet, adjacent to
the knockouts.
2. The unit must be hard-wired to its control panel box and to the
building electrical system. Knockouts are provided in the unit’s
cabinet for access to the wiring and terminal block. As a minimum
requirement, 14 gauge wiring should be used to connect the unit to
the facility’s electrical system.
NOTE: Carefully read the various wiring diagrams and schematics
in this instruction manual.

6
Two Motorized Impellers
HEPA Filter
Prefilter
Noise Reduction
Baffle on Door Panel
Filtered Air Exhaust
Wiring to Terminal Block in Unit
Drop Ceiling
Air Inlet
Control Panel Box
Wiring to
HFS800C
Installed
to Local
Electrical
Code
Requirements
by Qualified
Electrician
Room Under Negative Pressure
Model HFS800C
Figure C: HFS800C Installation Drawing
PLEASE NOTE: 14 gauge wire
should be used for all field wiring.
The wiring must be done by a
qualified electrician in accordance
with local electrical code as well
as NEC and CEC code. At most,
two wires can be wired into any
one terminal in the terminal
blocks. If more than two wires are
required, the installing electrician
should use a jumper with a wire
nut to contain the extra wires.
Figure B2: Control Panel Box Mounting
Wall Flush Mount Wall Surface Mount
Mounting
Holes (4x)
Controls are
attached to face
plate using the
4 keps nuts
provided.
Face Plate
attaches with the
4 mounting
screws provided.
Control Panel Box
is mounted onto the wall
with 4 screws through the mounting
holes in the back of the box. (Use
anchors if required)
Drywall
2" x 4" Stud
Controls are
attached to face
plate using the
4 keps nuts
provided.
Face Plate
attaches with the
4 mounting
screws provided.
Mounting
Holes
Mounting
Holes
Control Panel Box is mounted into
the wall cutout with 4 screws (Use
drywall anchors for the 2 screws
that do not screw into the stud.)
Cutout Size
is 9.75" x 7.375"

7
Included with the HFS800C is 50 feet of Category 5e unshielded
white riser cable. To ensure proper functioning of the touch pad
control panel, only use the Category 5e cable to connect the
control panel to the unit.
There are 8 wires in the cable (4 pairs). The colors of the 8 wires
are as follows: (1) orange, (2) orange with white stripe, (3) green,
(4) green with white stripe, (5) brown, (6) brown with white stripe,
(7) blue, and (8) blue with white stripe.
There is a terminal block in the HFS800C unit and one in the
control panel box. These terminal blocks must be connected using
the Category 5e cable to join terminal 3 to 3, 4 to 4, 5 to 5 and
finally 6 to 6.
In order to make these connections, proceed as follows:
• Strip the insulation back 3/4" and twist the two wires of the same
color pair (one wire with solid color and one with stripe of the
same color) together so you end up with 4 pairs of wires.
• Fold the 3/4" stripped end over so it is 3/8inches long and put
this section in the terminal block. The wires are small gauge, and
folding it over provides enough wire to properly grip inside the
terminal block.
°Use the orange pair to wire terminal 3 at the control panel to 3
in the unit.
°Use the green pair to wire terminal 4 at the control panel to 4 in
the unit.
°Use the brown pair to wire terminal 5 at the control panel to 5 in
the unit.
°Use the blue pair to wire terminal 6 at the control panel to 6 in
the unit.
NOTES:
• Terminal 3 and terminal 4 monitor the pressure switch for the
primary filter (sensor 1 on the circuit board).
• Terminal 5 and terminal 6 monitor the pressure switch for the
HEPA filter (sensor 2 on the circuit board).
Upon completion of the hard-wiring, reassemble the rear panel to
the unit; this must be done prior to mounting and operating the unit.
3. The HFS800C should be located as far as possible from the air
supply to minimize “short circuiting” of air. Refer to the installation
drawing. Suspend the unit from the support beams above the
ceiling by connecting suitable wire or chain (that is in conformance
with local building codes) to the suspension tabs that are attached
to the unit. If permitted by building codes, turnbuckles and “S”
hooks can be used to connect the wire or chain to the suspension
tabs. The connection sequence would be as follows: suspension
wire (or chain) from support beam to turnbuckle, turnbuckle to “S”
hook and “S” hook to suspension tab on unit. The use of
turnbuckles facilitates the “fine tuning” of the unit’s position within a
ceiling grid. In positioning the unit, be sure that the filter access
door panel rests below the level of the drop ceiling (if applicable);
this will facilitate filter changes.
4. The remote control panel box should be securely mounted to a wall
at a height of no less than 48" above the floor. Refer to Figure B2
the CONTROL PANEL BOX MOUNTING drawing.
IMPORTANT NOTE: Do not operate the unit unless the prefilter
and HEPA filter are installed, and the filter access door and panel
are in place and closed.
9.0 To Operate the HFS800C With Touch Pad
Control Panel
Menu Screen
• When the HFS800C is installed and connected to a 120 volt
AC, 60Hz, 15 amp electrical power supply, the green LED light
illuminates, the screen displays “AAF International HFS” for
a few seconds, then one of the following screens displays:
• Press the MENU key to cycle through the following menu items:
“HEPA Filter Life” and “Total Unit Hours”.
• Enter the default password, 9-1-1, and press ENTER to change the
settings of the menu items.
NOTE: After the password has been entered, the electronic controls
will unlock and the settings of the various menu items can be
changed. If no key has been pressed within 10 seconds after the
password is entered, the initial screen will display and the electronic
controls will lock. At this point, the password must be re-entered.
• To Set the Speed:
1. Enter the password if prompted. See screen above entitled:
“Screen display if password enabled”.
2. Press desired speed setting key.
• HEPA filter hours - The units display the remaining service life of
the HEPA filter. To access this information, press the MENU key
and the screen will display:
• To reset HEPA filter life:
NOTE: This should only be done when the HEPA filter has
been changed.
Screen display if password enabled. Screen display if password disabled.

8
1. Enter the password if prompted.
2. Press the MENU key until the following screen displays:
• Press SCROLL key until the arrows bracket “Reset HEPA Life”.
• Press ENTER and the screen will display:
• Scroll to the desired selection and press ENTER. When the
selection is “Yes”, the screen will display “HEPA Life Reset” for 2
seconds, then the following confirmation screen will display:
• To access the “Total Unit Hours” screen, press the MENU key twice
and the screen will display:
• The Password feature has 2 functions (see screen below):
1. Enabling and disabling the password feature. As stated
previously, the unit is shipped with the password feature enabled.
a. To disable the password feature:
i. Enter the password from the main menu.
ii. Press MENU key until the following screen displays:
iii. Scroll to: “Turn Password Off” and press ENTER. A screen will
briefly display “Password is Off”, then the screen will display:
b. To enable the password feature:
i. Press MENU key until the screen in (a. iii above) displays.
ii. Scroll to “Turn Password On” and press ENTER. A screen
will briefly display “Password is On”, then the screen
will display:

9
2. Change the password:
a. Enter the password from the main menu.
b. Press MENU key until the following screen displays:
c. Scroll to “Change Password”, press ENTER and the following
screen will display:
d. Enter the new password. A screen will briefly display
“Password Changed”, then the screen will display:
• Alarm Conditions - The HFS800C is equipped with filter change
indicators. When either or both filters become loaded, an alarm
condition is created. The alarm condition is indicated by an audible
beep, flashing red LED light(s), and a screen display. Refer to the
section entitled Touch Pad Control Panel for HFS800C for specifics
regarding the function of each LED light.
NOTE: The audible alarm can be muted by pressing any key;
however, the red LED light(s) will continue to flash until the indicated
filter is changed.
The screen will indicate the cause of the alarm condition. When an
alarm condition is present, one of the following screens will display:
1. Press the BACK key (only if not in the main screen).
2. Enter the password if prompted.
3. Press the OFF key to turn the unit “Off”.
4. Refer to the section of this instruction manual entitled: “Filter
Replacement” and change the filter(s).
NOTE: The backlight for the control panel screen will remain ON for 5
minutes after the unit is connected to the power supply, then shuts
OFF. To reactivate the screen, press “ENTER” and the backlight will
turn ON for another 5 minute period.
NOTE: It is recommended that the unit be operated at “MAX”
speed whenever possible to maximize filtration, air changes, and
overall operation conditions.
The HFS800C has an automatic restart feature. If there is a
temporary loss of electrical power, the unit will automatically restart
as soon as power is restored.
If the HFS800C is used to create and maintain a negative pressure
condition, the pressure differential (between the room containing the
unit and the environment outside the room) should be monitored with
a calibrated instrument as per OSHA/CDC requirements. The AAF
HCRPM-3N2 is recommended for room pressure monitoring.

10
Green (Ground)
PLEASE NOTE: 14 gauge wire should be used for all field wiring. The wiring must be done by a qualified electrician in accordance with local electrical code as well as NEC and
CEC code. At most, two wires can be wired into any one terminal in the terminal blocks. If more than two wires are required, the installing electrician should use a jumper with
a wire nut to contain the extra wire.
PLEASE NOTE: To ensure proper functioning of the touch pad control
panel, only use the Category 5e unshielded white riser cable supplied
with this unit. There are 8 wires in the cable (4 pairs). The colors of
the 8 wires are: (1) orange, (2) orange with white stripe, (3) green, (4)
green with white stripe, (5) brown, (6) brown with white stripe, (7)
blue, and (8) blue with white stripe.
Terminal blocks in the HFS800C unit and in the control panel box
must be connected using the Category 5e cable to join terminal 3 to
3, 4 to 4, 5 to 5 and 6 to 6.
To make these connections:
• Strip the insulation back 3/4" and twist the two wires of the same
color pair (one wire with solid color and one with stripe of the
same color) together so you end up with 4 pairs of wires.
• Fold the 3/4" stripped end over so it is 3/8inches long and put this
section in the terminal block. The wires are small gauge, and
folding it over provides enough wire to properly grip inside the
terminal block.
HFS800C Wiring Diagram - Control Panel
°Use the orange pair to wire terminal 3 at the panel to 3 in
the unit.
°Use the green pair to wire terminal 4 at the panel to 4 in
the unit.
°Use the brown pair to wire terminal 5 at the panel to 5 in
the unit.
°Use the blue pair to wire terminal 6 at the panel to 6 in
the unit.
NOTES:
1. Terminal 3 and terminal 4 monitor the pressure switch for the
primary filter (sensor 1 on the circuit board).
2. Terminal 5 and terminal 6 monitor the pressure switch for the
HEPA filter (sensor 2 on the circuit board).
120 VAC Power In on
Terminal 1 - Green (Ground)
Terminal 2 - White (Neutral)
Terminal 9 - Black (Hot)
From 15 ampere circuit protected circuit
Green (Ground)
Two 8 Pin Female Connectors
3 Pin Connector
Center Pin Empty
Liquid Crystal Display
4 Pin Connector
2 Center Pins Empty
Field Wiring to Unit
Terminal 1 to 1, 2 to 2, 3 to 3
4 to 4, 5 to 5, 6 to 6, 8 to 8
(no wires to terminal 7, 9, 10)
Run Control wires (3, 4, 5 & 6)
separate them from AC Power Wires
120 VAC
Relay
Normally Open
Contacts

11
Circuit Breaker
to Terminal 8
to Transformer
Neutral to H1/H3
Low Voltage to H2/H4/X1/X3
Boost Voltage to X2/X4
Low - HEPA Port
High - Primary Port
HFS800C Wiring Diagram - Transformer Bracket
Low - Primary Port
High - Outside Port
PLEASE NOTE: 14 gauge wire should be used for all field wiring. The wiring must be done by a qualified electrician in accordance with local electrical code as well as NEC and
CEC code. At most, two wires can be wired into any one terminal in the terminal blocks. If more than two wires are required, the installing electrician should use a jumper with
a wire nut to contain the extra wire.
X2/X4
H2/H4/X1/X3
H1/H3
Pin 1 - Ground
Pin 2 - Neutral
Pin 3 - Variable Voltage to the motor
Male Plug
Male Pins
Primary
Sensor 1
HEPA
Sensor 2
Black
White (Neutral)
Green

12
HFS800C Wiring Diagram - Motorized Impellers
Pin 1 - Ground
Pin 2 - Neutral
Pin 3 - Variable Voltage
to the motor
PLEASE NOTE: 14 gauge wire should be used for all field wiring. The wiring must be done by a qualified electrician in accordance with local electrical code as well as NEC and
CEC code. At most, two wires can be wired into any one terminal in the terminal blocks. If more than two wires are required, the installing electrician should use a jumper with
a wire nut to contain the extra wire.
White (Neutral) to Terminal One on Capacitor with Black wire from motor
Brown Wire from motor to Terminal Two on Capacitor
Black (Variable Voltage) to Blue wire from motor
Green - Ground
HFS800C Wiring Schematic
120 VAC
15 ampere
GFCI Protected
Circuit
Neutral
Circuit
Breaker
5
Pressure Switches
Touch Pad Connected to J4
Liquid Crystal Display to J1 Boosted Variable Voltage to Motorized Impeller
Motorized
Impeller
Black
White
Green
Female Plug
Female Sleeves

13
10.0 Filter Loading Indicators
When the red light(s) on the HFS800C touch pad control panel flash,
this indicates one or more of the following: (1) the prefilter is loaded
and should be replaced, (2) the inlet is obstructed, (3) the HEPA filter
is loaded and should be replaced. The screen will display which
filter(s) need to be replaced.
11.0 Filter Replacement - Refer to Figure A
NOTE: Personnel responsible for changing filters, servicing
units, or relocating units within the facility are urged to wear the
proper personal protective equipment and follow safe work
practices in accordance with federal, state, provincial, and
employer regulations.
NOTE: Filters being replaced must be disposed of in accordance
with federal, state, provincial, local, and facility regulations.
The size and concentration of airborne contaminants, temperature
and humidity conditions, and duration of use determine how often
filters need replacement.
The method of determining when to replace the optional carbon
filter is somewhat subjective. As the odor, vapor, and/or gas filtration
capacity decreases, the user will begin to sense a slight odor or taste
of the contaminant, indicating that the filter should be replaced.
NOTE: The filters are not reusable. Do not attempt to clean and
reuse them.
NOTE: If an optional carbon filter is being used, be sure to remove
it from its polybag before installing it in a unit. Most carbon filters
are packaged in polybags to preserve the integrity of the
carbon granules.
CAUTION: AAF HEPA Filtration Systems are designed to meet or
exceed standards for high efficiency air filtration equipment. Use only
AAF parts, including replacement filters. Use of non-AAF parts and
filters voids the product warranty and all performance claims.
WARNING: To reduce the risk of fire, electrical shock or personal
injury, always turn the unit “OFF” and disconnect the power supply
before replacing the filters and before cleaning or servicing the unit.
WARNING: Before replacing the HEPA filter and before wiring,
installing, servicing, or cleaning the unit, switch power “OFF” at
service panel and lock the service disconnecting means to prevent
power from being switched “ON” accidentally. When service
disconnecting means cannot be locked, securely fasten a
prominent warning device, such as a tag, to the service panel.
12.0 Filter Change Procedures
To Change the Prefilter in the HFS800C:
1. Turn the unit “OFF”. Use the 1/4" hex key (provided with unit)
to loosen the cap screw on the door panel. Pull up on the two
door latches and let the hinged door panel swing down until it
is hanging in the vertical position.
2. Remove the prefilter from the filter retention channel mounted
on the inside of the door. The filter slides out toward the top of
the door.
3. Install a new prefilter and check to ensure that it is properly seated
at the bottom of the retention channel.
4. Close the door panel and lock it in position by pushing down on
the latches. Tighten the cap screw with the hex key.
To Change the HEPA filter in the HFS800C:
1. Turn the unit “OFF” and disconnect it from power supply.
Read and follow all warnings and cautions in the sections
of this instruction manual entitled “Electrical and Safety
Requirements” and “Filter Replacement” before attempting
to change the HEPA filter in the HFS800C.
2. Loosen the cap screw on the door panel, pull up on the latches,
and let the door panel swing down until it is in the vertical position.
3. The HEPA filter is held in place by spring-loaded swivel brackets.
Grasp two of the spring-loaded knobs located at one end of the
unit and slide the brackets away from the housing until they
disengage, and rotate them away from the filter toward the
outside of the unit. The HEPA filter will slowly drop down from
the mounting frame and will be retained by the tabs on the
swivel brackets.
4. Disengage the two swivel brackets at the opposite end of the unit
and rotate them completely away from the filter until they touch the
unit housing.
5. The HEPA filter has a gel seal and fits snugly against the mounting
frame. When removing the filter there will be some resistance felt
while pulling it away from the mounting frame. Remove the HEPA
filter and dispose of it.
6. Orient the new HEPA filter so that the gel seal surface is facing the
inside of the unit. Position the filter against the filter guides
attached to the unit housing and slide it inward until it is flush
against the mounting frame.
7. Rotate the swivel filter mounting brackets back into their
locked position, making sure that each knob snaps securely
into the unit housing.
8. Close the door panel and lock it in position by pushing down
on the latches. Tighten the cap screw with the hex key.

14
Net weight with filters
Shipping weight
Dimensions
Width x Depth x Height
Power supply requirements
Motorized impeller
Automatic restart - unit will
automatically restart itself after
temporary power interruption
Cabinet material
Cabinet seams
Noise level
Control panel
Sound baffle/Prefilter shield
Circuit breaker
Filter loading indicator
Power indicator
Motor speed
Connection to power supply
Prefilter
HEPA filter
Location of exhaust outlet
Accessories included with unit
Feature HFS800C
HFS800C = 71 lbs.
control panel = 5 lbs.
HFS800C = 86 lbs.
control panel = 7 lbs.
HFS800C = 23.5"W x 16"D x 47"H
control panel =7.187"W x 2.5"D x 9.625"H
120 volts AC, 60 Hz, 15 amp circuit. Unit draws 3.0 amps.
2 each, 125 watts, variable speed, with thermal overload protection,
automatic reset, 60 hz., single phase.
Yes
.050" powder coated aluminum
Assembled with solid rivets and sealed.
53-59 dBA
Touch pad style with LED lights and liquid crystal display (LCD) screen.
Yes
5 amp
LED lights and LCD screen.
Yes
5 motor speed settings.
Unit is designed to be hard-wired to a wall-mounted control panel box and
building electrical system.
ASHRAE MERV 8 rated pleated filter. Treated with EPA registered
antimicrobial agent - p/n 175-02-17E17G
Individually tested and certified to a minimum efficiency of 99.99% against
a 0.3 micron challenge aerosol; anodized aluminum frame; gel seal - p/n
577-571-002.
Corner / rear panels of unit.
One solid exhaust cover plate.
13.0 Specifications
NOTE: Specifications subject to change without notice.

15
14.0 Airflow Ratings
15.0 Troubleshooting Guide
Speed 1 Speed 2 Speed 3 Speed 4 Maximum
HFS800C
(8"x12" rectangular exhaust) 250 CFM 375 CFM 500 CFM 625 CFM 750 CFM
HFS800C
(8" diameter round exhaust) 200 CFM 300 CFM 400 CFM 500 CFM 600 CFM
NOTE: Airflow ratings estimates are based on factory and independent testing @ 120 VAC with an air
straightener and a traverse of readings taken with a computing vane-anemometer. Actual results may vary
for various reasons, including motor, blower and HEPA filter tolerances. Factors such as filter loading,
reduced voltage to the motor, and inlet and outlet ducting will reduce airflow. Use these ratings as a
general guideline only as results can vary with each installation.
Unit won’t start when it is
turned “ON.”
Filter loading indicators flashing.
Problem Possible Cause Solution
Electrical wiring connections.
Tripped circuit breaker.
Thermal overload on motorized
impeller(s) has tripped.
Loaded filters.
Optional carbon filter not removed
from polybag.
Check condition of wiring and
cabling. Check all electrical
connections to ensure they are in
accordance with wiring diagrams
and schematics.
Reset building breaker. Reset 5 amp
breaker on unit.
Turn unit “OFF,” wait 20-30 minutes
and restart.
Refer to Filter Change Procedures.
Remove from polybag.
NOTE: If unit does not start or malfunctions after carefully following the Troubleshooting Guide, call AAF at
1-888-223-2003.

HFS800C Ceiling Mounted
HEPA Filtration System
16.0 Component Replacement and Care of the Unit
WARNING: To reduce the risk of fire, electrical shock, or personal
injury, always turn the unit “OFF” and disconnect it from the power
supply before removing the control panel, replacing the filters and
before cleaning or servicing the unit. The HFS800C is equipped with
automatic restart motorized impellers that will restart without warning
after a temporary power interruption or recovery from a thermal
overload (over-heating) condition. Keep clear of motorized impellers
at all times to reduce the risk of injury.
Occasionally a defective component will cause the unit to operate
improperly or not at all. Any electrical component can fail. Refer to the
Wiring Diagrams and Electrical Schematic to diagnose the failure of
any component. Diagnostics should only be performed by a technician
qualified to service electrical equipment.
The unit is powder coated and should be cleaned with a damp cloth
or a water-based cleaner/sanitizer. Do not use harsh chemicals,
solvents or detergents (particularly on the control panel cover) to
clean the unit.
WARNING: Keep electrical components dry as their exposure to
liquids poses a safety hazard and can damage components.
17.0 Certification of HEPA Filtration System
The AAF HFS800C has been tested by Intertek Testing Services
(ITS) and is ETL listed.
ITS is accredited by the U.S. Occupational Safety and Health
Administration (OSHA) as a Nationally Recognized Testing
Laboratory (NRTL).
18.0 Limited Warranty
AAF International HEPA Filtration Systems are manufactured by
Abatement Technologies, Inc. and warranted by AAF to the original
user, against defects in materials and workmanship for a period of 2
years after the date of purchase. This warranty does not guarantee a
useful life of the filters. Our only obligation shall be, at our option, to
repair or replace the defective component(s) or make a suitable
adjustment for each defect(s) upon timely notification thereof,
provided the unit has been used, maintained and handled in
accordance with these Operating Instructions.
19.0 Limitation of Liability
Except as provided above, AAF International shall not be liable
for any loss or damage, whether direct, indirect, incidental, special
or consequential, arising out of the sale, use or misuse of
AmericanAirFilter products or the user’s inability to use such
products. The remedies set forth herein are exclusive.
For warranty information and assistance contact AAF International’s
Customer Service Department at 1-888-223-2003.
10300 Ormsby Park Place Suite 600
Louisville, Kentucky 40223-6169
www.aafintl.com
Customer Service 888.AAF.2003
Fax [phone]
AAF has a policy of continuous product research and
improvement and reserves the right to change
design and specifications without notice.
ISO Certified Firm
©2011 AAF International
The USGBC Member logo is a trademark owned by the
U.S. Green Building Council and is used by permission.
AFP-3-187B AUG ‘11
Installation, Operation, and Maintenance Instructions