AIRINNOVATIONS HEPAirX Technical Document

HEPAirX®
Ventilating Air Cleaner
Installation, Operation and Maintenance Guide
Edition November 2012
HEPAiX is a product of
Air Innovations
North Syracuse, New York 13212
800-825-3268
www.HEPAirX.com
HEPAirX U.S. Pat. No. 7,802,443; HEPAirX® is a registered trademark of Air Innovations®.

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Table of Contents
Page
Directory of Terms…………………………………………….........................................2
Capacity Specifications......................................................................................................3
General Description...........................................................................................................4
Planning the Installation ...................................................................................................7
Pre-Installation...................................................................................................................7
Installation of the Window Sleeve Adapter.....................................................................8
Installation in an Outside Wall.......................................................................................11
Installation of the HEPAirX ...........................................................................................16
Wiring the System for Power.........................................................................................17
Electrical Plug Configuration .......................................................................................18
Start Up.............................................................................................................................18
Sealing of the Room......................................................................................................19
Operation.......................................................................................................................19
HEPAirX Controls...........................................................................................................21
Rocker Switches.............................................................................................................22
Control Settings .............................................................................................................23
Maintenance .....................................................................................................................24
Filters .............................................................................................................................24
Other ..............................................................................................................................26
Maintenance Schedule...................................................................................................27
Troubleshooting ...............................................................................................................28
Contact Information........................................................................................................29
Wiring Diagram...............................................................................................................30
Warranty ..........................................................................................................................31

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Directory of Terms
British Thermal Unit (BTU) - is a measure of the thermal capacity of a fluid
Condenser Section –the side of the system which transfers heat out of the system into the
outside air by condensing refrigerant
Condenser Coil –coil that exchanges heat from the refrigeration system into the outside air
Condenser Fan –fan that moves outside air through the condenser coil to remove heat and
blows it back outside
Compressor –a pump which circulates refrigerant within the system where it absorbs heat by
changing from a liquid into a gas where it is compressed and then cooled back to a liquid
CFM –(Cubic feet per minute) - A unit of measurement for the amount of air handled by the fan
Electronic Control Panel –also called a user interface –displays the temperature and humidity
in the room and where the user can control the operation of the unit including setting fan speeds,
occupied and unoccupied modes, and temperature set-points
Electrical Panel –an internal panel that contains all the electrical devices and wiring
Evaporator Section –the side of the system that cools the room air by absorbing heat into the
liquid refrigerant changing it into a gas
Evaporator Fan –also called the Room Air Fan –fan which recirculates room air through the
evaporator (cooling) coil, the heating coil and the HEPA filter to maintain temperature and
cleanliness in the room
Evaporator Cooling Coil –coil that cools and dehumidifies the room air by absorbing heat
from the air
Exhaust Air - refers to the room air leaving the heat exchanger and being exhausted to the
outside
Exhaust Air Fan –fan which draws room air out of the return air section in the unit through the
heat exchanger and exhausts it to the outside
Grill –Louvered inlet or outlet plates that direct the airflow or protect the inside of the unit
Heat Exchanger –an air-to-air aluminum plate heat exchanger which transfers heat between the
exhaust air and the outside air to save energy
Heating Coil –an electrical resistance heating coil located in the evaporator section where it
heats the room air to maintain room temperature
High Efficiency Particulate Air (HEPA) filter –a specially constructed, high-efficiency filter
with a minimum efficiency of 95% DOP tested on 0.3 micron particles

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LCDI Plug –leakage current detection interrupter plug –reduces risk of an arc fault occurring in
the power cord
Occupied/Unoccupied Switch –changes operating mode of unit from continuous operation to
thermostatically controlled intermittent operation (refer to “Controls” section)
Outside Air –refers to the outside air entering the heat exchanger and then into the room
Outside Air Fan –draws outside air through a pre-filter and blows it through the heat exchanger
into the return air before it enters the evaporator section where it will be conditioned
Pre-filter –washable filters used in the outside air inlet and in the room return air to capture
large particles before they enter the unit
Return Air –refers to the room air returning or entering into the unit
Supply Air –refers to the room air leaving the unit after it has been conditioned
Setpoint - the desired room temperature set on the thermostat
Volatile Organic Compounds (VOCs) –organic chemicals containing carbon, oxygen,
hydrogen, chlorine, and other atoms. Volatile chemicals produce vapors readily. Volatile organic
chemicals include formaldehyde, gasoline, industrial chemicals such as benzene, solvents such as
toluene and xylene, and tetrachloroethylene (perchloroethylene, the principal dry cleaning
solvent). Many volatile organic chemicals are also hazardous air pollutants.
Underwriters Laboratories (UL) –a private research firm located in the United States that
attempts to classify and determine the safety of various materials and products

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Min. circuit size 115 volt, 60 cycles,15 amps
High Low High Low
200 135 171 119
32 30 32 30
25 28 25 28
325 325 325 325
Typical Operating Conditions High Low
65°F 151/psig
124°F 425/psig
111°F
96°F
117°F
Wide High Deep
22 22 12
19½ 13¼ 17
22 22 29
Min. window opening 22 13¾
Cabinet Construction
R410A
(A window sleeve adapter kit is included to facilitate installation through the window; double-hung
type window typical.)
- removable; vacuum, rinse off and replace as needed
(Loading of the filters dependent on outside air and room conditions.)
Controls
Programmable touch pad
Commercial grade components for durability and longevity
Exterior surfaces powder-coated aluminum for weather resistance
Air louvers (4) adjust airflow and direction
Filters
Prefilter (2) - capture large particles before they enter re-circulating system
Outside screen - capture large particles before they enter room
- removable; vacuum, rinse off and replace as needed
call manufacturer for replacement.
Airflow (CFM):
Evaporator
Outside supply air
Electric:
Power (amps): (3-pronged outlet required)
Operting Parameters: at 80°F/67°F indoor (DB/WB)
Heating 3,413 BTU/hour (1kW)
Cooling 6.8
Heating 9.6
Cooling (low speed) 4,220 BTU/hour total, 3,190 BTU/hour sensible
Cooling (high speed) 6,230 BTU/hour total, 4,000 BTU/hour sensible
at 95°F/75°F outdoor (DB/WB)
99.97% HEPA
95% HEPA
Outside window
Overall
Room exhaust air
Condenser
Dimensions (inches)
Liquid
Suction
Discharge
Inside window
Condenser (in)
Condenser (out)
(HEPA filters are consumables and exempt from this warranty.)
Weight (pounds)
Refrigerant
Sound
Similar to "white noise" machines
Warranty
1 year materials and workmanship
118 (two-person lift recommended)
Certifications
ETL certified to Underwriters' Laboratories and Canadian performance and safety standards
HEPA - 95% or 99.97% minimum efficiency at removing airborne particles .3 micron size.
Digital LCD display with blue illumination
90 days labor
Specifications
Ventilating Air Cleaner
All performance data has been evaluated at normal room conditions of 70°F and 50% relative humidity at sea level.
Operating the device at other temperatures, humidity or elevations may impact performance.
Manufacturer reserves the right to change specifications without prior notice.
Product and Customer Support - Toll Free 800-825-3268
HEPAiRx is a registered trademark of Air Innovations, U.S. Patent 7,802,443.
7000 Performance Drive, North Syracuse, NY 13212 USA 800-825-3268
[email protected]
Rev. Sept 2012
HEPAirX®

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General Description
HEPAirX® units are portable, window mounted, room air conditioning units with an integrated
air-to-air energy recovery ventilator and a high efficiency particulate air (HEPA) filter. The units
are intended to reduce the amount of airborne particulates that may affect people’s health,
especially those who suffer from upper respiratory distress. They are designed to control the
temperature in the room while ventilating the room with approximately one to two air changes
per hour of fresh (outside) air. This fresh air is mixed with the room air being re-circulated
through the HEPA filter at the rate of nine to twelve times per hour. The exact number of air
changes depends on several factors but the principal factors are room size and filter loading.
Most important is that all of the fresh outside air and room return air go through the HEPA filter
before being supplied to the room. (Refer to Illustration A-1-1 for identification of major
components and parts)
The energy recovery ventilator is used to conserve energy by transferring heat between the
incoming outside fresh air and the outgoing room exhaust air. The fresh air is used to diffuse and
dilute the concentration of particulates and total volatile organic compounds (TVOCs) in the
room. The HEPAirX uses a HEPA filter rated at 99.97% efficient at removing all airborne
particulates. (Other filter efficiencies are also available on special order, but HEPAirX models
that use filters rated below 99.97% efficiency have not been recognized by the U.S. Federal Drug
Administration as being Class II medical devices.) The amount of fresh air and exhaust air on the
model using the 99.97% filter is approximately 25 CFM each. Exhausting the same amount of air
as is being drawn in will result in a neutral room pressure relative to the outside. Reducing the
amount of exhaust air will create a slight positive pressure in the room relative to the outside, but
will reduce the effectiveness of the energy recovery ventilator. In a well-sealed room, a positive
pressure helps prevent airborne particles from entering the space from the outside or adjacent
space. The amount of positive pressure obtainable will vary with the tightness of the room.
ILLUSTRATION A-1-1 IDENTIFICATION OF MAJOR COMPONENTS AND PARTS

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The room air enters the HEPAirX on both sides of the portion of the unit inside the room. (Refer
to Illustration A-1-2) These two return air inlets are covered in a removable, washable filter
mesh. A portion of this return air is exhausted through the heat exchanger to the outside to purge
the room of particulates. A similar amount of fresh outside air is drawn through the heat
exchanger to replace the exhausted air. This fresh air is then combined with the room return air
and enters the cooling and heating coil section to be conditioned. This conditioned air flow is
then forced by the room (evaporator) fan through the HEPA filter where it is then supplied back
into the room. In the HEPAirX its HEPA filter will remove 99.97% of all particles EACH pass
through the filter. Theoretically, this would result in low particle concentrations left after several
passes. However, the actual particle concentration attainable in a given room is dependent on
many factors, principally the source of the particles and the activity within the room.
To cool the room, heat must be removed from the room airflow. This occurs in the cooling coil
which then, through the compressor, exhausts the heat to the condenser air flow. This air enters
the coil in the back of the unit and is discharged out the louvers on the side.
ILLUSTRATION A-1-2 AIR FLOW ILLUSTRATION

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Planning the Installation
The HEPAirX units have been designed for single room applications. Although the units will
work in any room, they have been primarily designed for the bedroom where the occupants
spend much of their time with reduced activity. In order for the units to be most effective, it is
recommended that the door to the room be sealed with gasketing and floor sweeps to reduce the
infiltration of particulates from adjacent spaces. Also, the door to the room should be kept closed
most of the time but especially when there are other activities going on in other rooms, such as
cooking, cleaning or vacuuming. Any floor, ceiling or wall registers from a central heating or
air conditioning system should be closed and sealed off to prevent contaminating the room
from other spaces. Radiators or baseboard heating units may continue to operate normally.
The HEPAirX unit needs to be installed in a window to the outside. Double hung-type windows
are the easiest to adapt to. Sliders and casement windows are also possible but require a more
complex installation procedure. It is possible to install the HEPAirX “through- the-wall,” but this
requires a carpenter to properly frame out the opening and seal around the unit. A standard 115-
volt, 3-prong electrical outlet is required (115v AC, 1 phase, 60 cycle). This outlet should be
dedicated only to HEPAirX operation. DO NOT overload circuits by plugging in multiple items.
If the outlet is more than 6 feet from the location of the unit, a UL-approved three-prong,
14-gauge extension cord should be used.
Pre-Installation
Immediately upon delivery, inspect the HEPAirX and any accessories for loose parts or
visible damage to the equipment or containers. Report any damage to the freight carrier
immediately. Do not proceed if there is visible damage to the box or unit.
Decide on the best window location for the unit, preferably in the center of a wall and in
a window where the sound of the unit and the dripping of the condensation will not
bother a neighbor. One that is also near an electrical power outlet.
NOTE: at minimum, the clear opening of the window must be at least 19.5” wide and
13.5” high. Add 2” to the minimum width if the window sleeve assembly will be used.
We recommend leaving the unit on the skid until ready to install. Materials to install the
window sleeve have been packed on top.
Unpack the unit and set it on the floor or a sturdy table.
CAUTION
The HEPAirX unit is heavy, weighing 118 lbs., and
should not be handled by one person alone.
The fins on the coil in the back of the unit are very sharp. Do not touch
or run your fingers down the coil surface.
Check the electrical power outlet by plugging in the unit. The light on the electronic user
interface panel should come on indicating the unit has power. Avoid exposing the power
or extension cord to wear or abuse, or being stepped on or tripped over.
Turn on the unit by pressing the ON/OFF button on the user interface on the front of the
unit.

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The OCCUPIED/UNOCCUPIED switch should be in the OCCUPIED mode. The room
air fan should come on. The cooling or heating components may not come on right away
as they are dependent on the internal controls in the unit.
Lower the set point temperature to force the cooling on to test for noise and vibration.
Wait for the compressor and condenser fan to come on. (See section “HEPAirX
Controls” page 21 for instructions)
Do not proceed until you have checked for damages and confirmed you have power and
unit is operational. Listen for any unusual noises or vibrations that might indicate an
internal problem.
Installation of the Window Sleeve Adapter
Tools that will be needed:
Contents provided in the sleeve adapter kit:
Insulation –1” thick Outside support leg (perforated angles)
Plastic channels Nuts and bolts –miscellaneous
Tape –foam-type, self adhesive one side Foam strip to seal opening between sash
White duct tape Window sleeve assembly
Note: All windows are different. These instructions are based on commonly used double-
hung windows, but may require adaptations based on your particular style and
manufacturer of window.
Unit may also be installed through an outside wall with or without the window sleeve.
See instructions at end of this section.
Refer to Illustration A-2-1 (left)
for typical cross section and
nomenclature used in these
instructions.
Drill with Level box tape measure square drywall tin snips snap knife
Phillips tip wrenches screws heavy duty
size 7/16”
ILLUSTRATION A-2-1

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Open the bottom inside window sash all the way. Open bottom storm window if used or remove
storm if one piece.
Refer to Illustrations A-2-2 and A-2-3 (below) for instructions
1. The first step is to install the lower insulation panel on the inside of the sill up against the
stool. If there are no storm windows and the top of the stool is the highest surface in the
window, proceed to step 2. If there are storm windows on the outside, you need to
measure the height of the storm window and the bottom of the sill next to the stool. To do
this, raise the storm window and lay the level on the outside bottom flange, set the bubble
to level and measure from the bottom of the level to the sill as shown in the illustration.
2. Cut the lower insulation panel to the full width of the window from sash track to sash
track and the height to the higher of the stool height above the sill (see A-2-2) or the
storm window track above the stool (A-2-3). Use multiple pieces if needed. If you can cut
the bottom of the lower insulation panel with the same angle as the sill, it will form a
better seal.
3. Next cut the 1” plastic channel the full width of the lower insulation panel and attach to
the top of the panel. Use multiple pieces if needed. If the sash tracks have internal ribs,
the insulation and the plastic channel can be notched to accommodate. The purpose is to
get a good seal against the sash tracks on both sides. (see P-2 and P-3)
4. Assemble the window sleeve per A-2-4 and P-4. Initially only tighten the nuts and bolts
finger tight. Attach the rubber pad to the footer using self-stick adhesive. Bolt leg to the
pivot hole in the sleeve and then to the slot. Use two washers (one on each side of the
slot) between the bolt head and the nut to allow the leg to slide in the track. Adjust the
angle and length of the leg to approximately what will be needed. Manufacturer suggests
starting at approximately 45° angle.
5. Now set the HEPAirX window sleeve into the window and on top of the lower insulation
panel and plastic channel. The tabs on the bottom should be between the stool and the
lower insulation panel. Lower the sash to meet the top of the sleeve. The upper flange
should be on the inside of the inside sash. This will prevent the sleeve from falling out of
the window and should be plumb with the window. Manufacturer recommends the sleeve
DOUBLE-SIDED
TAPE
WITHOUT STORM WINDOW OR IF STOOL IS
HIGHER THAN STORM WINDOW FRAME, CUT
LOWER INSULATION TO BE LEVEL WITH TOP
OF STOOL
IF STORM WINDOW FRAME IS HIGHER THAN
STOOL, CUT LOWER INSULATION SO TOP OF
INSULATION IS LEVEL OR SLIGHTLY HIGHER
THAN WINDOW FRAME
ILLUSTRATION A-2-3
ILLUSTRATION A-2-2

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be in the center of the window but it may be adjusted to either side to account for
obstructions or preferred placement. (see A-2-5 and P-3)
6. Keeping the window down and the sleeve in place, reach out and adjust the leg and foot
against the siding. Adjust the length and angle of the leg so the foot fits flat against the
siding. Tighten all nuts and bolts with wrench. The foot may also be secured to the siding
for extra strength using screws or other fasteners as needed. (see A-2-4 and P-4)
7. The window sleeve is designed with a slight pitch toward the outside to prevent any
water infiltration under the unit. Using the level, confirm that the bottom of the sleeve
pitches down and out from the window. If it does not, add foam tape between the plastic
channel and the lower insulation panel to raise the inside of the sleeve. (see A-2-4)
8. The bottom of the sleeve may now be secured to the stool or sill using drywall type
screws of sufficient length through the holes provided. Note that the screws inside the
sleeve must be flat head-type and installed flush with the metal sleeve surface. (see P-2
and A-2-4)
Note: Fasteners shown on illustrations are for possible suggested locations only due to
variance in window manufacturers. If windows are new and screws or fasteners might
void manufacturers’ warranty, white duct tape may be used instead. You may also wish
to cut additional lengths of plastic channel or block of wood and insert vertically between
the top of the lower sash and the underside of the top window frame to prevent the
window from accidentally opening.
9. Test the sleeve stability now by applying a downward pressure with your hands onto the
bottom of the sleeve to confirm that it doesn’t move down or rock side to side.
10. Next install the left and right insulation panels. Slide the panel through the opening in the
sleeve until it seals against the sash track. Again, depending on the type of window, the
insulation may have to be notched to make a good seal against the sash track. Once you
are assured it fits properly, mark the panel and cut it flush with the inside of the sleeve
(see A-2-5 and P-2). Then remove the panels temporarily.
11. The left and right lower plastic channels can now be cut to fit between the sash track and
the window sleeve. These channels are installed turned up. Notch the angle on the
plastic channel to fit against the metal sleeve and into the sash track as needed. Once fit is
confirmed, install the plastic channel. (see A-2-5 and P-2)
12. Slide the left and right insulation panels back in place. Now raise the window sash
enough to measure and cut the upper plastic channels to fit on top of the left and right
panels between the sleeve and the sash tracks. These channels are installed turned
down to fit over the insulation. Again notch to fit.
13. Install the foam gasket tape across the entire top of the assembly from sash track to sash
track including over the top of the sleeve. (see A-2-5 and P-3 and P-5)
14. Now lower the window sash and compress against the gasket to make a good seal. Check
to be sure the sleeve is square to the window. The window sash can now be secured to the
upper flange on the sleeve with screws through the two holes in the flange into the sash
frame. Use small screws such as 6 x ¾ to minimize hole in sash. (see A-2-4 and P-3)
15. The sleeve and insulation panels should now be secured and weather-tight. Check to
make sure the installation is solid and secure. Add foam gasket tape on the face of the
sleeve flanges, both sides and across top. (see A-2-5) White duct tape can be used to seal

11
any cracks or crevices around the sleeve or window frame or between plastic tracks. Use
tape to seal the ends of the left and right panels of the inside of the sleeve. The sleeve
should now be ready to receive the HEPAirX.
16. Install foam strip provided in kit between the glass panels on the outer window sash and
the top of the inner sash to seal the opening between the inner and outer window sashes.
(see section view on A-2-5)
Installation in an Outside Wall
The HEPAirX may be installed in an outside wall. Since this requires cutting through an outside
wall and possibly framing and trimming the opening, we recommend a qualified carpenter be
engaged. The unit can be installed with or without the window sleeve assembly. If the sleeve is
used, the opening will need to be 22.0”W x 13.75”H. If the sleeve is not used, the opening
should be 19.5”W x 13.50”H. Frame the opening completely on all four sides and repair
insulation if damaged. Install the unit in the framed opening and secure in place. Be sure the
unit slopes to the outside to prevent water infiltration. Gasket or caulk any opening to prevent
infiltration. If used, fasten the sleeve securely into the framed opening. Install the unit into the
sleeve and secure with the seismic clips as per following instructions.
ILLUSTRATION A-2-4 INSTALL SLEEVE DETAIL

12
ILLUSTRATION A-2-5

13
Photo P-1
Photo P-2

14
Photo P-3
Photo P-4

15
Photo P-4
Photo P -5
** If unit does not seal against sleeve, add gasketing between sleeve and unit
P-6a Front view inside room
P-6b. Side view in room P-6c. Side view outside
Room air prefilters (2)
Location of outside air prefilter
Photo P-6 Completed Installation
Adjustable discharge nozzles (4)

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Installation of the HEPAirX
Improper installation may result in the equipment malfunctioning and a safety
hazard. Read all of the installation instructions before installing the HEPAirX
system.
The HEPAirX is heavy. Place the unit on the floor or on a level and stable surface that
can support the full weight of the system.
Move the HEPAirX unit into position with the smaller condenser section facing the
window. (see P-6)
Slide the unit into the window sleeve taking care not to disturb the gasketing around the
back lip of the unit. Slide the unit all the way into the sleeve until the back of the unit
seals against the gasketing.
The unit should now be sealed tight against the window adapter. If there are obstructions
preventing the unit from compressing against the gasketing, additional foam gasketing
may have to be added to the face of the sleeve.
Remove the screws provided one each side on the unit and reuse to secure the two
seismic restraints. (see P-1)
The power cord is equipped with an LCDI breaker to prevent power cord short circuiting.
(see A-2-6)
Do not modify the equipment. Modification to the equipment may cause injury or
damage to the equipment.
Never place anything on top of the unit. Be especially careful to avoid any spills of
liquid as it could degrade the HEPA filter and/or cause electrical shock.
Never block or cover any of the opening or outlets on the unit.
Never allow anything to rest on or roll over the power cord.
Never place the unit where the power cord is subject to wear or abuse. Locate the
position of the power cord or extension to avoid tripping.
Use only UL approved, 3-prong, 3-wire, 14-gauge extension cords.
Never overload wall outlets.
Do not remove or open any cover unless the system is turned off and the power cord is
unplugged.
Use only dedicated power outlet boxes of the correct capacity and configuration for the
system model.
Testing of the HEPAirX has demonstrated the ability of the device to re-circulate air
within certain sized rooms and chambers. However, due to variations in actual room size
and configuration, the user is cautioned to adjust the four (4) discharge nozzles (see P-6a)
on the HEPAirX to maximize the air distribution within a given room.

17
Wiring the System for Power
DO:
Match the electrical outlet to the plug provided on the HEPAirX.
Provide dedicated circuit and wiring for the system.
Use only approved extension cords.
Match the wiring breaker size to the rated load shown on the serial plate. See
sample serial plate illustration below. Actual serial plate for each unit is located
on the metal wall behind the HEPA filter.
DO NOT MODIFY THE PLUGS IN ANY WAY!
IMPORTANT
The electrical power supply must be 115 volt AC, 1 phase, 60 cycle, 15 amp minimum circuit
size, and cannot vary more than +/- 4% or damage may occur to the system.
The electrical outlet and wiring installation must meet national and local building codes.
Plug the system into the wall outlet. Gently pull on the plug to make sure it is tight.
Electrical 115/1/60 Electric Heat Amps 8.7
Locked Rotor Amps 36.2 Heat exchanger fans 0.36
Compressor RLA 5
Condenser Fan Amps 0.9 Min. Circuit Amps 11.8
Evaporator Fan Amps 0.9 Refrigerant R410A
System Charge 26oz
Total Unit Amps 9.6 Test Pressure 450psi
Pat. No. 7,802,443
Ph: 800-535-3295*315-452-7400*Fax:[phone]
HEPAirX®
Model 99H0095-00
Serial# __________
7000 Performance Drive, North Syracuse, NY 13212
An Air Innovations Product

18
ILLUSTRATION A-2-6 ELECTRICAL PLUG CONFIGURATION
To comply with the UL STD 484 this system contains a factory
supplied LCDI (leakage current detection interruptor) power cord,
which specifies that single phase portable air conditioning units
contain a protection device to reduce the risk of an arc fault
occurring in the power cord. These provide a reliable way to prevent
the risk of fire due to a damaged power cord. They feature electronic
detection to automatically cut off power to the unit when a current
leakage condition is detected in the systems power cord.
Once power is shut off, the device will not be able to be reset until the unsafe current leakage
situation is resolved. Power is restored by the “reset” button on the cord’s power head.
Start Up
All HEPAirX units are run-tested at the factory and checked according to Air
Innovations’ standard quality control compliance requirements. Once installed on-
site, the units should be checked for operation in accordance with the following.
Plug the HEPAirX unit into an electrical outlet. The control panel should light up
indicating that there is power. If it does not light up, check to verify that the LCDI switch
is not tripped and that there is power at that outlet. (see A-3-1)
The OCCUPIED/UNOCCUPIED switch should be in the occupied position. The FAN
speed switch can be in either the high or low position. (see A-3-1)
Press the ON/OFF button. The room recirculating air fan should come on with a
noticeable blowing of air out the supply nozzles on the top of the unit. If this fan does not
come on, check the occupied/unoccupied switch again. If it still does not come on, shut
off and disconnect the unit. Contact Air Innovations service department.
The cooling or heating components may not come on right away as they are dependent on
the internal controls in the unit.
The control mode has been factory set to AUTO with the cooling setpoint set at 72°F and
heating at 70°F. These may be changed by following instructions below for the user
interface. (see A-3-2)
The actual room temperature is indicated on the panel along with the room humidity. If
the actual room temperature is above the setpoint, the compressor and condenser system
will come on and run until the actual room temperature cools to the set point.
If the actual temperature is below the setpoint, the heating coil will come on to heat the
room until it reaches the setpoint.
Again, listen for any unusual noises or vibrations that might indicate an internal problem.
If any are detected, shut off the unit and contact AI service.
It is normal for the display to read an alarm condition upon initial start-up until the
room begins to reach setpoint temperature.
NOTE: The new HEPA filter in your HEPAirX may give off an odor for the first day or
two after which the odor should dissipate.

19
Sealing of the Room
The HEPAirX is designed to take control of the entire room. To prevent infiltration of
particulates from adjacent spaces, the room should be sealed up.
Allow the unit to run while sealing the door frame with foam gasketing and installing a
door sweep to prevent infiltration.
Locate and cover or seal any floor or wall registers or other openings into or out of the
room.
Locate and seal any other obvious leaks into or out of room.
Operation
The HEPAirX is intended to run continuously to maintain temperature, reduce humidity,
clean the inside air and provide fresh, outside ventilation air.
The door to the room should remain closed whenever possible to reduce the
contamination from adjacent spaces.
To reduce energy consumption, the temperature may be adjusted up or down and the fan
speed switch can be run on low.
In addition to the push buttons on the user interface there are two rocker switches. The
OCCUPIED/UNOCCUPIED switch is used to save energy if the occupant is going to be
out of the room for several hours, such as during the school or work day. The HI-LOW
fan switch is used to run the room air fan at high or low speed.
The OCC/UNOCC switch should be used whenever the room will be unoccupied for any
extended period. Upon return, restart the unit by switching to occupied and run fan at
high speed for an hour to purge room of particulates.
In the OCCUPIED position, the room air fan will run continuously and the heating and
cooling systems will cycle to maintain room temperature. The outside and exhaust air
fans on the heat exchanger will also run continuously to purge the room of particulates
and bring in fresh air.
In the UNOCCUPIED position, the room air fan will cycle on and off along with the
heating or cooling system to maintain temperature. The outside and exhaust fans will
remain off. This is the most energy-efficient position but requires timely manual
switching based on room occupancy.
The OCC/UNOCC switch should be switched to OCCUPIED at least one hour before the
room is to be occupied for any length of time to purge the room of particulates.
The HI-LOW fan speed switch should be on high for at least an hour whenever the room
is being switched from unoccupied to occupied or whenever there are multiple people in
the room or there is a lot of activity in the room. The FAN speed switch can be switched
to low while the occupant is sleeping.
Another more convenient but less energy efficient option is to keep the fan speed switch
on low and the OCC/UNOCC switch on OCCUPIED all the time to maintain cleanliness
and temperature control. Use the UNOCCUPIED position then only when on vacation or
being out of the room for extended periods of time.