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