Carrier EACA User manual

Electronic Air Cleaner
Sizes 00!4, 0020, & 2020
Manual for:
Installation o Operation o Maintenance
CAUTION: Read installation instructions and rules carefully for safe operation,
Exercise the usual precautions when working with high voltage,
Form # IM-EACA-01 Date t/03

Table of Contents
Safety Considerations & Introduction
Unit spedflcations
Facts you should know about your new Electronic Air Cleaner
1) Regular dusting & "white dust"
2) Ozone
3) Air flow sensor operation
4) High akitude applications
Replacing the ionizing wires
Common Q & A
Maintenance of your Electronic Air Cleaner
1) Removing the cells and prefllter
2) Washing the cells and prefllter(s)
3) Replacing the cells and prefiiter(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 10
Air flow sensor diagram
Reducing ozone in high altitude applications
Cleaning the ionizing-collector cells
Symptoms of excessive arcing or zapping
Unit dimensions
Technical specifications
Typical HVAC system configurations
Sheet metal transitions
Turning vanes from improving air flow
Proper installation of cell spacer
Proper mounting diagram
Wiring the unit to the input power source
Electrical schematic diagram
Testing the power supply output
Troubleshooting flowchart
Unit p a r t s diagram
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
18
18
19
21
22
26
28
29-30
31-32

NOTE: Read the entire instruction manual before startinc 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 Z_ .When you
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.

mNTRODUCTmON
Thiselectronicair cleaneris technicallyknownasa two-stageelectrostatic
precipitator. Theair cleaneris designedto removeairborneparticulates,
includingdust,dirt,smoke,pollen,virus,spores,bacteriaandmold,fromindoor
air.
Airmovementthroughtheunitisprovidedbythe heating,airconditioningor
ventilatingsystemblower.Asdirty air entersthe air cleaner,the air passes
throughametalmeshprefilter.Theprefilterpreventslint,pethairandotherlarge
particulatesfromenteringtheaircleaner.Htitsimportantthatthesefiltersbein
placeto preventexcessivedirtloadingoftheaircleanercollectorcells.These
filters extendthe time betweenmaintenanceof the air cleanercollector
cells.Thisallowsthe ionizing-collectorcellsto providecleanairfor a longer
periodbetweenwashings.
Theprefilteredairthenpassesthroughatwo-stageElectronicAirCleaner.Inthe
first stage,all airborneparticulate,evensubmicronsize,are electronically
charged(positive)astheypassthroughtheionizer.Theionizerfieldissetupby
a coronadischargeemanatingfromthefine,tightlystrungwiressuspended
betweentwoadjacentflatplates.Inthesecondstage,thechargedparticulate
passesthroughan intenseelectricalfield establishedbetweenalternately
chargedandgroundedparallelcollectorplates.Here,thepositivelycharged
particulateisattractedtothenegativelygroundplatesandremovedfromtheair
stream.
Foraunitdiagramandacompletelistingofallparts,pleaseseepage31-32.
POWER ]RAY ASSEMBLY
COVER ON-OFF SWITCH
fND_CATING
CELL
CON[ACT
POWER TRAY
ASSEMBLY
CABINET
COLLECIiNG CELL(S)

UNiT SPECiFiCATiONS
This air cleaner is easyto install, operate and maintain. Its basic components
arethe:
Cabinet
Mounts to existing ductwork; houses the ionizing-collecting cells and
prefilters.
IonizingoCoHector 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 ofthe power tray assembly.
Prefilters
Trap large particulates before it enters the ionizing-collector cells.
Power Tray Assembly
Contains the indicating light, solid state power supply, contact boards and
electrical controls including ON/OFF switch and safety interlock switch.
Awidng compartment is provided at the rear of the tray allowing the option to
permanently wire the unit directly to a furnace control.
Air Flow Sensor (AFS)
Installed on certain models, this part brings the unit on by sensing the
movement of air within the duct.
How to identify Which Air Cleaner Modem 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 KNOWABOUTYOUR 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 fact, 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.

Turn OFF power and install lockout tag before beginning any maintance procedure.
How the Air How Sensor Works (Available on specific modems)
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°R 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 g[_ disc, cleaning this coating from
the thermistor.
Figure 1

H_h Altitude Operation
Because the air is less dense at higher altitudes, there is a possibility of
nuisance arcing. The homeowner can quickly and easily correct this
condition.
1. Turn the unit OFF and turn offcircuit breaker.
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. Locate the jum per terminal (see figure 2).
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 itwith the two screws.
6. Replace the 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 _ON_ZJNG 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 reducethe need for further maintenance.
Use the 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 of the 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 bythe 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.

Common Questions and Answers
Q. Why isn't my air cleaner cleaning my air?
A. 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
carry heavier particulates to the air cleaner. Ifthe dirt doesn't 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.
Q. It still isn't cleaning my air the way Iwant it to. What can I do?
A. 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 isn't working!
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 aNows 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.

Q. What if Wno 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. Wfthe 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. Wfthe 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 cleaning 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.

MAINTENANCEOFYOURELECTRONICA_RCLEANER
WASHINGCELLSANDPREFILTERS
Regularwashingis 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 ceils 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

To wash cemmsand prefilter(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 celms 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
Rapid arcing or zapping
Excessive ozone smell
Excessive ozone smetl
Hissing or sizzling noise
Green LED light is not ON
Red LED light is not ON
POSSIBLE CAUSES
Broken or toose ionizing wire(s)
Dirty ionizing-collector ce_l
Damaged or bent collector p_ates
Dirty inst_lator caps on ionizing-
collector cell
Air cleaner is wired directly to a
120V power source
Loose high voltage connections
Radio or tetevision interference
Poor electrical contact
No power available
Loose widng at ON/OFF switch
Defective ON/OFF switch
ON/OFF switch not in ON position
Loose wiring within power pack
assembly
Broken or shorted electdca_
component
Excessive dirt build up on ionizing
wires
CORRECTIVE ACTION
Remove broken or loose wire and
replace with new wire
Clean as outlined on page 10-11
Straighten prates with needlenose
pliers or replace entire ionizing-
collector ceil.
Clean with warm soapy water and
rinse weE_
Qualified HdAC contractor must
instafi AFS or rewire air cleaner
To the HdAC system blower
Repair or replace the component
Uncommon occurance --
check for good common ground
for air c_eaner
Ensure that there is a good
connection between the top of
the ionizing-collector cell and the
bottom of the contact board
assembly
Contact HdAC contractor
Reset circuit breaker
Replace fuse
Check for secure connectior_
Replace ON/OFF switch
Turn the unit ON
Check for secure connections
Contact HVAC contractor
Contact HdAC contractor
Clean wires with alcohol and
allow to dry thoroughly before
turning the ur_it ON
Contact board assemblies are Replace contact board assembly
corroded or carbonized
Broken ionizing wire Remove broken wire and replace
with new wire
Dirty ionizing-collector cell Clean as outlined on page 10-11
Foreign object located between Remove object from ionizirlg-
collector plates collector ceil
Damaged or bent collector plates Straighten with a pair of needle-
nose pliers or replace cett
Insulators are corroded or
carbonized
Table 1
12
Replace insulators or ionizing-
co,rector cet_

UNiT D_MENS_ONS =All dimens{ons in inches (ram)
EACA
Inches MM Inches MM Inches MM Inches MM Inches MM Inches MM Inches MM
0020 24-!/4 6!6 !7-7/8 453 20-!5/16 531 22-1/2 572 24-7/8 632 7-!/8 18! 21-7/16 545
0014 20-!/4 5!4 !3-7/8 352 !6-!5/16 429 22-1/2 572 24-7/8 632 71/8 18! 21-7/16 545
2020 24-!/4 6!6 !7-7/8 453 20-!5/16 531 19 483 21-3/8 543 7-!/8 18! !8-5/8 473
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
sedous injury or death.
14

TECHNICAL SPECiFiCATiONS
(Specifications subiect to change without notice.)
MODEL NUMBER-EACA 0014 0020 2020
DIMENSIONS (IN) 20 1/4 x 7 1/8 x 24 7/8 24 1/4 x 7 1/8 x 24 7/8 24 1/4 x 7 1/8 x 2! 3/8
AIR FLOW SENSGR INSTALLED NQ NO YES
ELECTRICAL INPUT !20V, 60 Hz, 1 PH !20V, 60 Hz, 1 PH 240V, 60Hz, 1PH
MAXIMUM RATED AIR FLOW 1400 CFM 2000 CFM !400 CFM
(2380 m_/hr.) (3400 m3/hr.) (2380 mhr)
MAXIMUM PRESSURE DROP ,11 inch w.g. ,14 inch w.g. ,11 inch w.g.
@! 400 CFM @ 2000 CFM @ ! 400 CFM
CELL WEIGHT (2 CELLS IN EACH UNIT) !0 Ibs. each !2 Ibs. Each 9 Ibs. Each
(4,45 kg) (5,45 kg) (4,!0 kg)
UNIT WEIGHT 32 Ibs 361bs 36 Ibs.
(14,6 kg) (!6.4 kg) (! 6,4 kg)
MAXIMUM POWER CONSUMPTION 40 watts 48 w_[ts 40 watts
ELECTRICAL OUTPUT 2.5mADC 3.2 mADC 2.5 mADC
@ 6200 kVDC @ 6200 kVDC @ 6200 kVDC
CLASSIFICA-[IQN UL/CUL UL/CUL UWCUL
15

TYPICAL MOUNTING POS_T_ONS
Shaded illustrations are for positioning use only
BASEMENT FURNACE
(LOWBOY)
Mounted horizontally in return
plenum -iust above the furnace
COUNTERFLOW FURNACE
Mounted horizontally in return
duct -iust above the furnace
SPACE SAVER FURNACE
(HIGHBOY)
Side installation. Cleaner is
mounted vertically, where
return air enters side inlet of
furnace.
_AIR CLEANER
OFFSET INSTALLATION
Ifthere is less than 7qn. for mounting the air cleaner
between the duct and the furnace, move the return air drop.
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

PLANN1NG TH E 1NSTALLATION
Application
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, in this location, the blower motor and cooling coils will be kept clean.
DO NOT INSTALL THE AIR CLEANER
IN THE DISCHARGE AIR DUCT.
Before installingthe 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 prefikers and electronic cells to maintain
maximum efficiency and trouble-free operation.
Air Conditioning
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 humidifier can 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 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.
17

Atomizing 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 totrap water droplets and hard water deposits.
3. Clean the air cleaner more frequentlyto prevent a hard water buildup.
Sheet Metal _nstallation
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 fitthe 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.
NR OL_NE_)
Figure 4
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.
t-; .....
rlgu_e 5
18