Carrier EACAAXCC0014 User manual

EACA
Electronic Air Cleaner
Sizes 0014, 0020, & 2020
1
Manual for:
Installation • Operation • Maintenance
CAUTION: Read installation instructions and rules carefully for safe operation.
Exercise the usual precautions when working with high voltage.
Form # EACA-1SI III EACA-14-1 Date 07102

Table of Contents
Safety Considerations &Introdudion
Un;t spealficatJons
Facts you should know about your new Electronic Air Cleaner
1)Regular dusting & "white dust"
2) Ozone
3) Air flow sensor operation
4) High altitude applications
Replacing the ionizing wires
Common Q&A
Maintenance of your Electronic Air Cleaner
1)Removing the ceils and prefllter
2) Washing the cells and prefilter (s)
3) Replacing the cells and prefilter(s)
Common troubleshooting techniques
Installation instructions (for use by authorized HVAC
contractors)
Technical troubleshooting flowchart
Replacement part list
List of figures
Figure 1
Figure 2
Figure 3
Table 1
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 19
Air flow sensor diagram
Reducing ozone inhigh altitude applications
Cleaning the ionizing-collector cells
Symptoms of excessive amieg or zapping
Unit dimensions
Technical specifications
Typical HVAC system configurations
Sheet metal transitions
Turning vanes from in_rovieg air flow
Proper installation of ceil spacer
Proper mounting diagram
Wiring the unit to the input power source
Electrical schematic diagram
Testing the power supply output
Troubleshooting flowchart
Un_ p a r fsdiagram
L _
Page
1
2
4
4
5
6
7
8-9
10
10
11
11
12
15 29
29-30
31-32
Page
5
6
10
12
13
15
16
19
18
19
21
22
26
28
29-30
31-32

NOTE: Read the entire instruction manual before starting the installation.
Safety Considerations
Improper installation, adjustment, alteration, service, maintenance, or use
can cause explosion, fire, electrical shock, or other conditions which may
cause personal injury or property damage. Consult a qualified installer,
service agency, or your distributor or branch for information or assistance.
The qualified installer or agency must use factory authorized kits or
accessories when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Read these
instructions thoroughly and follow all warning or cautions attached to the unit.
consult local building codes and National Electric Code (NEC) for special
requirements.
Recognize safety information. This is the safety-alert symbol L .Whenyou
see this symbol on unit or in instructions and manuals, be alert to potential for
personal injury.
Understand the signal words DANGER, WARNING, and CAUTION. These
words are used with the safety alert symbol. DANGER identifies the most
serious hazards which will result in severe personal injury or death.
WARNING signifies a hazard which could result in personal injury or death.
CAUTION is used to identify unsafe practices which would result in minor
personal injury or product and property damage. NOTE is used to highlight
suggestions that will result in enhanced installation, reliability, or operation.
This manual provides information for location, installation, operation and
service. Before installation and use of the air cleaner, carefully read these
instructions to insure maximum benefits from the unit and to avoid needless
service costs that can result from improper installation.

INTRODUCTION
This electronic air cleaner is technically known as a two-stage electrostatic
precipitator. The air cleaner is designed to remove airborne particulates,
including dust, dirt, smoke, pollen, virus, spores, bacteria and mold, from indoor
air.
Air movement through the unit is provided by the heating, air conditioning or
ventilating system blower. As dirty air enters the air cleaner, the air passes
through a metal mesh prefilter. The prefilter prevents lint, pet hair and other large
particulates from entering the air cleaner. It its important that these filters be in
place to prevent excessive dirt loading of the air cleaner collector cells. These
filters extend the time between maintenance of the air cleaner collector
cells.This allows the ionizing-collector cells to provide clean air for a longer
period between washings.
The prefiltered air then passes through a two-stage Electronic Air Cleaner. In the
first stage, all airborne particulate, even submicron size, are electronically
charged (positive) as they pass through the ionizer. The ionizer field is set up by
a corona discharge emanating from the fine, tightly strung wires suspended
between two adjacent flat plates. In the second stage, the charged particulate
passes through an intense electrical field established between alternately
charged and grounded parallel collector plates. Here, the positively charged
particulate isattracted to the negatively ground plates and removed from the air
stream.
For a unit diagram and a complete listing of atl parts, please see page 31-32.
INOICATING
LIGHTSCELL
CONTACT
POWER TRAy
,_SEMBLY
CABINET
II
II
I
i
COLLECTING _LL(I

UNIT SPECIFICATIONS
This air cleaner is easy to install, operate and maintain. Its basic components
arethe:
Cabinet
Mounts to existing ductwork; houses the ionizing-collecting cells and
prefilters.
Ionizing-Collector Cells
Collect the dust, dirt and other particulates in the air. They contain the
ionizing and collecting sections as described on page 2. The cells must be
installed with ionizing wires on the air intake side. A spring contact is located
on the top of each cell and must be in position to make contact with the
contact board assemblies on the bottom of the oower tray assembly.
Prefilters
Trap large particulates before it enters the ionizing-collector cells.
Power Tray Assem bly
Contains the indicating light, solid state power supply, contact boards and
electrical controls including ON/OFF switch and safety interlock switch. A
power cord at the rear of the tray allows the unit to be connected to a
standard 120V outlet. A wiring compartment is provided at the rear of the tray
allowing the option to permanently wire the unit directly to a fumace control.
Air Flow Sensor (AFS)
Installed on certain models, this part controls the operation of the unit by
sensing the movement of air within the duct. This helps to reduce power
usage and prevents the possible buildup of ozone within the duct.
Howto Identify Which Air Cleaner Model you own
The model number and serial number for your Electronic Air Cleaner can be
found on the data label located on the inside of the access door. This serial
number will be a ten (10) digit number.
3

FACTS YOU SHOULD KNOW ABOUT YOUR NEW
ELECTRONIC AIR CLEANER
Dusting and "White Dust"
Your new Electronic Air Cleaner will efficiently clean and filter your household
air. Unfortunately, it will not eliminate the need for regular dusting of your
furniture and belongings. Due to the design of all duct-mounted air cleaners,
they can only clean the air that reaches the air cleaner. Therefore, if the
particulates are not being carried to the air cleaner in the air stream, the air
cleaner cannot remove them from your home.
Occasionally a "white dust" may be noticed in bedrooms or newly furnished
rooms. This is mainly composed of lint which, because it is heavier than other
particulates, settles before it reaches your unit.. This "white dust" is not mixed
with airborne dirt particles, therefore, it is clean and has no staining or soiling
properties. However, running the furnace blower continuously, day and night,
will help reduce this from occurring.
_Ozone
Under normal operating conditions all Electronic Air Cleaners produce
minute quantities of ozone as an incidental by-product. In fact, all electronic
products, such as televisions, cordless phones and refrigerators, produce
some amount of ozone. The average homeowner can detect the smell of
ozone concentrations as low as 25 to 100 ppb (parts per billion). The design of
this unit has been tested and ozone production is approximately half of the
published permissible limits established by the Environmental Protection
Agency. These limits recommend that the concentration of indoor ozone not
exceed 50 ppb. Ozone is not harmful in these concentrations. In tact, the
ozone level in major cities can sometimes reach as high as 100 ppb on a
summer day. The addition of optional charcoal after-filters can help reduce
this.
Normally, a new unit will produce more ozone than one that has been in
operation for several weeks. This is due to sharp corners or manufacturing
burrs on the ionizing-collecting cell(s) and is normal. As the Electronic Air
Cleaner arcs and zaps, the voltage is vaporizing these areas and tends to
round them off. This is part of the breaking-in period of ownership and the
issue is self-correcting. Also, high-altitude locations can be more susceptible
to noticing the presence of ozone.
An ionizing-collecting cell that has been damaged or bent (the designed
spacing between electrically charged and ground components has been
decreased) may also produce an abnormal amount of ozone.

How the Air Flow Sensor Works (available on specific models)
The electronic AFS was designed to provide an efficient and reliable method
of controlling the operation of the air cleaner when the dealer is unable to
wire the unit directly into the furnace blower. The electronic AFS utilizes a
thermistor that heats up to approximately 130°E The AFS then stabilizes at
this temperature and when the furnace blower turns on and air flows through
the ductwork, the same vacuum effect pulls cooler air over the hot surface.
This air movement cools down the thermistor and this cooling down effect
allows the electronic AFS to understand that the furnace blower is moving air
and the Electronic Air Cleaner must turn on to provide air cleaning.
If the air cleaner is installed in a location that is dusty and dirty, the sensor on
the AFS can become coated with dirt and lint. This coating can insulate the
AFS and keep it from operating properly. To clean the thermistor, take a
cotton swab dipped in rubbing alcohol and carefully insert it into the hole
located on the right hand side of the power pack assembly (when facing the
unit). The hole is 3/16" in diameter and is located on the front of the power
tray assembly. Carefully twirl the cotton swab between your fingers, making
sure the tip is lightly in contact with the grey disc, cleaning this coating from
thethermistor. T.E.___
Figure 1
individual to personal injury
1. Make sure the furnace blower is not operating, the rocker
is OFF and the circuit breaker is turned OFF or cord is
disconnected.
4. Locate the AFS. It is a circuit board with a small grey_q
connected to the circuit board by two(2) silver .wi'res (sir_ to
Figure 1). Carefully bend the thermistor so that it is Iocat, In the
center of the opening and approximately 1/8" from the inside edge
of the power pack assembly.
5. Reinstall the power tray assembly end access door.

i
Hiqh Altitude Operation
Because the air is less dense at higher altitudes, there is apossibility of
nuisance arcing. The homeowner can quickly and easily correct this
condition.
1. TurntheunitOFE Disconnectcordorturnoffcircuitbreaker.
2. Remove the two screws that secure the cover to the power tray and
remove it from the unit. (The entire power supply tray may be removed
from the cabinet by removing two screws from inside the cabinet.) Do
not lose these screws.
3. Locatethejumperterminal (seefigure2).
4. With a pair of needle nose pliers, carefully adjust the jumper settings
from HIGH to MED. Ensure that the jumper is firmly seated in the
terminal.
5. Replace the power tray cover and secure it with the two screws.
6. Replacethe access door and turn the unit ON.
This procedure will slightly reduce the output voltage, minimize arcing and
reduce ozone production. If the condition does not improve, repeat the
above procedure and move the jumper setting from MED to LOW. If this
does not correct the situation, contact your local HVAC dealer.
All Electronic Air Cleaners are produced at the factory with the jumpers set in
the HIGH position. However, the output voltage may be lowered in any
situation where the unit is arcing excessively or there is excessive ozone
production.
Figure 2

REPLACING THE IONIZING WIRES
Ionizing wire breakage is minimal because of the constant tension design
and fixed location of the ionizing wire supports. When an ionizing wire
breaks, the efficiency of the Electronic Air Cleaner will decrease slightly.
However, the unit will continue to operate with broken ionizing wires as long
as the broken wires have not caused a short circuit of the unit. Remove all
loose and broken wires as soon as they are identified.
Although the replacement of the ionizing wires can be attempted by a
homeowner, it is recommended that a qualified HVAC contractor be
contacted for replacement parts and/or servicing. Wires are supplied in a
coiled spring configuration, with a clinch nut on each end of the wire.
Replacement requires a pair of needle nose pliers. Exercise caution in
removing any broken wires in the collector cell. This will prevent accidental
shorting of the cell and reduce the need for further maintenance.
Usethe following procedure when replacing an ionizing wire.
1. Ensure that all power to the Electronic Air Cleaner is OFF, remove the
access door and remove the ionizing-collector cells from the unit.
2. Carefully remove all remains ofthe broken wire.
3. Grip the new wire at each end of the wire with your thumb and index
finger. While stretching the wire to approximately 6" allow one end of
the wire to uncoil between your thumb and index finger.
4. Place one end of the wire in the slot of the stainless steel support on
the collector cell from the front of the cell. This support is partially
covered by the cell brace in front of the support.
5. Grip the other end of the ionizing wire with needle nose pliers and
insert the terminated end of the wire into the slot on the support bar of
the opposite end of the collector cell.
6. The wire should be tight enough to be self supporting and remain
suspended between the two support slots in the support bar.
7

Common Questions and Answers
Q.
A. Why isn't my' air cleaner cleaning my air? The air cleaner is most likely working just like it was designed.
However, many factors can affect the performance of the unit. Are cold air
registers located in the ceiling? If so, it will be difficult for the air flow to
carryheavierparticulatestotheaircleaner.lfthedirtdoesn_getto the air
cleaner, it can't be removed from the air. Are both the Red and Green lights
illuminated? If not, then the unit may be in need of servicing. Contact your
local HVAC dealer for assistance.
e.
A. It still isn't cleaning my air the way Iwant it to. What can Ido?
We recommend that you run the blower continuously so that the air
movement will carry the dirt to the air cleaner. Unfortunately, there will
always be some dirt that is left behind on the appliances, furniture, etc.
Regular dusting is recommended to stir up these pockets of dust so that
they can enter the airstream and be removed by the Electronic Air Cleaner.
Q. When I turn on my Electronic Air Cleaner, the lights come on for a couple
of seconds and then turn off. The air cleaner isnhtworking!
A. The air cleaner is fine as long as both the Red and Green lights are
coming on. Try turning the HVAC blower OFF and then turning the
Electronic Air Cleaner on. This should solve the problem.
Q. What is the zapping noise I'm hearing from my unit? Should I be
concerned?
A. The zapping or popping noise that you are hearing is the sound of larger
particles being "vaporized" by the ionizing-collector cell. This is normal
and is no cause for alarm. As your HVAC system blower moves the air
through the ductwork and allows the Electronic Air Cleaner to clean the
air, the noise will diminish. However, there will always be instances when
larger particles enter the ionizing-collector cell.
Q. Should Ihear this zapping noise all the time?
A. All Electronic Air Cleaners will occasionally zap or pop as larger particles
pass through the ionizing-collector cells. However, if the sound is
constant or is repetitive in nature, then a large particle may have become
lodged in the ionizing-collector cells and they may require cleaning. If
cleaning the ionizing-collector cells does not stop the noise and there
are no large particles trapped in the ionizing-collector cells, then the
cause could be a broken/loose ionizing wire, bent collector plate or
other mechanical reason. Please contact your local HVAC dealer for
assistance.
8

Q. What if I no longer hear any popping or zapping noises coming from
my unit? Is it still cleaning the air?
A. If the zapping noises stop and the air cleaner is not in need of
servicing, then one of two situations has occurred. First, the Electronic
Air Cleaner has successfully removed all larger particles from the air
and is cleaning microscopic particles which do not cause the zapping
noise. Second, the blower and/or HVAC system is not running and air
is not flowing through the ductwork. The Electronic Air Cleaner cannot
remove particles if the air stream is not moving.
Q. I lost power to my home during a storm. Should I worry about the
Electronic Air Cleaner?
A. The most common problem associated with power outages is the unit
will not turn on properly after power is restored. If the Red and Green
light come on for a couple of seconds and then go off, the unit is
OK. Just turn the HVAC blower off, turn the unit ON and then turn the
blower back on. If the Red and/or Green light does NOT come on
after a storm, the power supply in the Electronic Air Cleaner may be
short circuited. Contact a local HVAC contractor for further
information.
Q. My installer told me to keep my HVAC system blower running all the
time, but I don't want to increase my power bill. What should I do?
A. It is recommended that you keep your HVAC system blower running
all the time to achieve the maximum air cleanJng efficiency. This will
allow the Electronic Air Cleaner to do what it is designed to do, which
is clean the air. Remember that if the air does not reach the air cleaner,
it cannot be cleaned. On average, your Electronic Air Cleaner will use
the same amount of electricity as a 55W light bulb. The energy usage
of the HVAC system blower will depend on the age of your system,
energy costs in your regional location and other variables. The best
solution is to try running the HVAC system blower in continuous mode
for a month or two to estimate your annual energy costs and base
your final decision on what you feel most comfortable with.
9

MAINTENANCE OF YOUR ELECTRONIC AIR CLEANER
_WARNING :Handle ionizing-collector cells with care as plates
,can be sharp and cause injury if not handled properly. __.
WASHING CELLS AND PREFILTERS
Regular washing is necessary to ensure proper performance. A thorough
washing once every two months will be adequate for most installations.
More frequent washing (once a month) may be necessary on some
installations (new homes for example) where there is new carpeting, plaster
dust, or excessive cigarette smoke (Figure 3).
To remove cells and prefilter
1. Push air cleaner switch to the OFF position. Wait 15 seconds. Open door
access panel.
2. Carefully remove cells and prefilter(s) and set aside in a safe place,
3. Do not drop the ionizing-collector cell. This could cause damage to the
cell plates or ionizing wires and cause excessive arcing and noise.
10

Towashcells andprefilter(s)
We suggest that you follow the instructions below to properly and
thoroughly clean your collector cells.
1. Place enough hot water in a utility tub to cover the first cell. Dissolve 2
to 4 oz. of granulated automatic dishwasher detergent (not laundry
detergent) in the water.
2. Allow the cell to soak for 30 minutes. Agitate it up and down in the
solution until it appears clean and remove.
3. Repeat with second cell.
4. Agitate the prefilters up and down in the solution until they appear
clean.
5. With a hose, rinse the cells and prefilters. The hose should be held
about 10" from the cell plates and at a slight angle for better cleaning
results. Be careful not to spray the ionizing wires directly with the
hose. The water pressure can cause the wire to snap and break. The
cell frame should be thoroughly rinsed along the edges to dislodge
any trapped lint or dirt. Carefully wipe a damp cloth or sandpaper (not
emery cloth) along the ionizing wires.
6. Stand cells and prefilters up to drain. Let dry two hours. You may
experience a slight discoloration of the aluminum collector cells after
washing. This is a normal chemical reaction and will not harm your
unit or affect its performance.
To replace cells in air cleaner
1. Replace prefilter and cells in cabinet. Check that arrow on cells points
in same direction as air flows through the duct. (If you have to force it
past the positioning screw on bottom, it is probably in the wrong
position.)
2. Replace access door (engage tabs on lower edge of door into slots in
cabinet). Carefully close door.
3. Turn air cleaner switch to ON.
11

COMMON TROUBLESHOOTING TECHNIQUES
SYMPTOM POSSIBLE CAUSES
Broken or loose ionizing wire(s)
Rapid arcingor zapping
Excessive ozone smell
Excessive ozone smell
Hissing or siZZling noise
Green LED light is not ON
Reci LED I_ght is nct ON
Dirty ionizing _oltector cell
Damaged or bent collector plates
Dirty insulator caps on ionizing-
collector cell
Air cleaner is wired directly to a
t20V power source
Loose high voftage connections
Radio or television interference
Poor electrical contact
NO power available
ILoose at ON/OFF switch
wiring
Defective ON/OFF switch
ON/OFF switch not in ON position
Loose wiring within power pack
asSembly
Broken or shorted electrical
component
Excessive dirt build up on ionizing
wires
CORRECTIVE ACTION
Remove broken or loose wire and
replace wtth new wire
Clean as outlined on page t0-! 1
Straighten plates with needienose
pliers or replace engre ionizing-
collector cell
Clean with warm soapy water and
rinse well
Qua[itie<3 HVAC contractor must
install AFS or rewire air cleaner
To the HVAC system blower
Repair or replace the component
Uncommon occurance --
check for good common ground
for air cleaner
Ensure that there is a good
connection between the top of
the ionizicg-coliector cell and the
bottom of the contact beard
assembly
Contact HVAC contractor
Reset circuit breaker
Replace fuse
Check for secure connection
Replace ON/OFF switch
Turn the unit ON
Check for secure connections
Contact HVAC contractor
Contact HVAC contractor
Clean wires withalcohol and
allow to d_/thoroughly before
turning the unitON
Contact board assemblies are Replace contact board assembly
corroded or cad3onized
Broken ionizing w_re
Dirty ionizing collector cell
Foreign object located between
collector plates
Damaged or bent collector plates
Insulators are corroded or
carbonized
Table 1
12
Remove broken '_itre and repiec_
with new wire
Clean as outlined on page 10-11
Remove object from ionizing-
Cofleotor cell
Straighten with apair of needle-
nose p_er,_ or replete ceil
Replace insulators or ionizing-
Cctlector cell

UNIT DIMENSIONS - All dimensions in inches (mm)
EACA
!_r
iiii¸ _ • ............_B: D ; E F =G
572
Inches MM Inches MM Inches MM Irtche_ MM Inches MM Inches MM Inches MM
_20 24-1/4 616 17-7/8 453 20-15116 531 I22-1/2 24-7/8 632 7-1/8 181 21-7/16 545
0014 20-1/4 514 13-7/8 352 16-15116 429 22-1/2 572 24-7/8 632 7 1/8 181 21-7/16 545
I
2020 24-1/4 616 17-7/8 453 20-15/16 531 19 I 483 21-3/8 543 7-1/8 181 18-5/6 473
I
Dimensions _'e the same f_- both models with and wtthc_ Air Row _ensors installed
13

Only a trained, experienced serviceman
,should install this electronic air cleaner.
A thorough checkout of the unit installation
should be completed before unit
operation. Electrical shock can cause
serious injury or death.
14

TECHNICAL SPECIFICATIONS
(Specifications subject to change without notice.)
MODEL NUMTER-EACA 0014 0020 2020
D/MIENSlONS (IN) 20 1/4 x7 1/8 X24 7/5 24 1/4 _ 7 1/8 x 24 7/8 24 I/4 x 7 1/8 x 21 3/8
UNIT COLOR American Sterling American Sterling American Sterling
AIR FLOW SENSOR INSTALLEO NO NO YES
ELECTRICAL iNPUT 120_ 60 HZ, 1PH 12e_ 60 Hz, IPH 240V, 60Hz, 1PH
MAXIMUM RATED AIR FLOW 1400 CFM 2000 CFM 1400 CFM
(2380 m3/hr.) (3400 m_lhr.) (2380 m3hr.)
MAX/MUM PRESSURE DROP ,I 1inch w.g. ._4 inch wg .I _ inch w.g.
@1400 CFM @2000 CFM @ 1400 CFM
CELLWEIGHT (2 CELLS IN EACH UNIT) 10 Ibs. each 12 Ibs Each 9 Ibs Each
(4,45 k9) (5.45 kg) (410 kg)
UNIT WEIGHT 32 Ibs 30_bs 36 Ibs
(14.6 kg) (16.4 kg) (16,4 kg)
MAXIMUM POWER CONSUMPTION 40 watts 48 watts 40 watts
ELECTRICAL OUTPUT 2.5mADC 3.2 mADC 2.5 rnADC
@5200 kVDC @0200 kVDC @ 6200 kVDC
CLASSIFICATION IUL/CUL UUOUL UUCUL
15

TYPICAL MOUNTING POSITIONS
Shaded illustrations are for positioning use only
AreaFLOW _/_
!sHi
rP_NS'TIO_S AIR C_A_E_
_ CLEA_R
\
BASEMENT FURNACE
(LOWBOY)
Mounted horizontally in return
plenum - just above the furnace l
COUNTERFLOW FURNACE SPACE SAVER FURNACE
Mounted horizontally in return (HIGHBOY)
duct - just above the furnace Side installation. Cleaner is
mounted vertically, where
return air enters side inlet of
furnace.
OFFSET INSTALLATION IJI } _
If there is less than 7-in. for mounting the air cleaner I __ /'] }/._
between the duct end the furnace, move the return air drop. /_ _,
/_ --_-...._
_ C_EANFR/ _
/,
SPACE SAVER (HIGHBOY)
Installation beneath furnace. Cleaner
mounts horizontally, where return air
enters from below. Raise furnace by
installing a suitable wood structure and
install air cleaner.
HORIZONTAL FURNACE
Mounted vertically in return duct as close to
the furnace as possible
16

PLANNING THE INSTALLATION
A_ation
The air cleaners are used in forced air heating cooling and ventilating systems. The
air cleaner should be installed in the system so that all the system air is circulated
through the air cleaner. The air cleaner will only remove the airborne contaminants
delivered to it. Maximum performance isobtained when the system blower is set for
continuous operation.
Installation Requirements
The best location for the air cleaner is in the return air duct next to the blower
compartment. Inthis location, the blower motor and cooling coils will be kept clean.
DO NOT INSTALL THE AIR CLEANER
IN THE DISCHARGE AIR DUCT.
Before installing the air cleaner, consider the application and type of HVAC system
present. Refer to the section entitled Typical Mounting Positions,
for the most common types. If a transition between the ductwork and air cleaner is
required, refer to section entitled Transitions. The unit must be readily accessible
for periodic inspection and cleaning of the prefilters and electronic cells to maintain
maximum efficiency and trouble-free operation.
Air Conditioninq
The air cleaner should be installed upstream of the cooling coil. This will keep the
coil clean and reduce air conditioning coil maintenance. Improved cooling
efficiency is the result and directly affects energy costs. A clean coil, will reduce
utility costs. If the air cleaner is downstream of the cooling coil, condensation will
form on the cooled collector plates when the air conditioner cycles. This will allow
water droplets to form on the collector plates and cause nuisance arcing. Arcing will
reduce air cleaner efficiency and reduce the life ofthe high voltage power supply.
Humidifiers
An evaporative humidifiercan be mounted upstream of the air cleaner. It is best to
install an atomizing humidifier downstream of the air cleaner because hard water
salt deposits and water droplets may damage the air cleaner. If an atomizing
humidifier must be mounted upstream of the air cleaner:
1. Mount itas far upstream as possible. (Recommended at least 6 feet.)
2. Install a standard disposable furnace filter between the humidifier and
the air cleaner to trap water droplets and hard water salts.
3.Clean the air cleaner more frequently to prevent a hard water salt
buildup.
Outdoor Air
When outdoor air isadded to the returnair duct, sufficient heat should be added to
maintain the return airtemperature at 40°F (4°C)minimum. Lower temperatures can
cause ionizer wire failure.
17

Atomizincj Humidifiers
If an atomizing humidifier is installed, it must be mounted downstream of
the air cleaner•
1. Mount the humidifier as far downstream as possible, it is recommended a
distance of at least 10 feet to reduce the possibility of excessive arcing
as water droplets pass through the Electronic Air Cleaner.
2. Install a standard disposable furnace filter between the humidifier and
the air cleaner to trap water droplets and hard water deposits.
3. Clean the air cleaner more frequently to prevent a hard water buildup•
Sheet Metal Installation
The Electronic Air Cleaner is adaptable to all new or existing residential
forced air furnace and cooling systems.
Transitions
If the air duct does not fit the air cleaner cabinet opening, gradual transitions
are recommended to reduce air turbulence through the air cleaner and
maximize efficiency. Not more than 20 °
(about 4" per running foot) of expansion
should be used on each side of the
transition fitting (Figure 4).
Outdoor Air
When outdoor air is added to the return air
duct, sufficient heat should be added to
maintain the return air temperature at 40°F
(4°C) minimum. Lower temperatures can
cause ionizer wire failure.
Fu._
_--4
Turnincj Vanes
If the air cleaner is installed adjacent to a
90 ° duct elbow, add turning vanes inside
the duct to improve air distribution across
the face of the air cleaner (Figure 5).
Failure to follow the recommendation can
reduce the efficiency of the Electronic Air
Cleaner.
Figure 4
/
Figure 5
18