Carrier 31KAX Instruction manual

31KAX
Electronic Air Cleaners
Installation, Start-up, and Service Instruction
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. Use
quenching cloth for brazing operations. Have fire extinguisher
available. 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 .
When you see this symbol on unit or in instructions and manuals,
be alert to potential for personal injury.
Understand the signal word DANGER, WARNING, or 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.
INTRODUCTION
Model 31KAX Plate Electronic Air Cleaner (EAC) is available in
3 sizes 012 (300 to 1400 CFM), 016 (500 to 1800 CFM), and 020
(700 to 2000 CFM). (See Fig. 1.)
These plate-type air cleaners are designed for use with residential
and light commercial forced-air heating and/or cooling systems.
They may be installed in a vertical or horizontal section of a
typical return-air duct system. (See Fig. 2.)
These air cleaners are easily field-converted from right- to lefthand units. Cabinets are designed to support up to 400 pounds
when used in under-the-furnace applications.
CABINET
The cabinet includes an electrical junction box and a power safety
interlock, and houses the air cleaner components. These components are:
1. Mechanical pre-filters—Expanded aluminum mesh first-stage
filter that removes lint and large dust particles.
2. Cell assemblies—Cells consisting of combined ionizer wires
and collector plates.
Ionizer part of cell has tungsten wires that receive positive
charge and are mounted between grounded aluminum channels supported by glazed ceramic insulators.
A91465
Fig. 1—Model 31KAX
Collector part of cell consists of alternately charged collector
plates.
The EAC components are listed below and shown in Fig. 3.
1. A power door assembly.
2. Two pre-filters.
3. A cabinet containing 2 air-cleaning cell assemblies.
4. A parts bag including electrical bushing, plug buttons, wire
chase, and airflow label.
POWER DOOR ASSEMBLY
The power door assembly consists of:
1. Unit operation light, ON-OFF switch, and door attachment
knob—all installed on door cover.
2. Door base plate contains a solid-state power pack that converts
120vac to high voltage DC (a 240v Conversion Kit,
KEAVC0101240 is available). All wiring mounted internally.
A line-voltage disconnect (male plug) and high-voltage busbar are mounted on the base plate externally. Four screws
must be removed to expose the power pack and wiring.
The supply circuit to the power pack, which is wired across the
furnace blower motor, is controlled by an ON-OFF power switch.
With the power switch ON (assuming power door is in place and
blower motor is operating), 120vac ± 10 percent single-phase, 60
Hz power is applied to the power pack (240-V Conversion Kit
transformer converts 240v to 120vac). Output of the power pack
assembly is approximately 7300vdc.
These Installation Instructions consist of the following:
Step 1—Locating Unit
Step 2—Installation
Step 3—Electrical Connections
Step 4—Startup and Adjustments
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
PC 101
Catalog No. 533-135
Printed in U.S.A.
Form 31KAX-9SI
Pg 1
6-94
Replaces: 31KAX-8SI
Tab 7a 9a
7⁄8-IN. ELECTRICAL
ENTRANCE FOR DUCT
APPLICATION
8 1⁄ 2″
REAR MOUNTING FLANGE
OPERATION
LIGHT
KNOB
A
3″
2 1⁄16″
16 7⁄8″
21″
LOGO
1″
ON/OFF
SWITCH
C
B
ELECTRICAL ENTRANCE (5⁄8-IN. DIA)
FOR FURNACE APPLICATIONS
REMOVABLE
POWER DOOR
A91466
MODEL
31KAX012
31KAX016
31KAX020
A
24-3/4
27-1/4
31-1/2
B
21-3/4
24-1/4
28-1/2
C
19-1/2
22
26-1/4
Fig. 2—Dimensional Drawing
Table 1—Component Information
MODEL
Air Volume Range
Electrical Data
(Input to power door)
Electrical Data
(Output To Collector
Cell)
Approx Ship.Wt. 120v
31KAX012
300-1400
120v, single phase, 60
Hz
31KAX016
500-1800
120v, single phase, 60
Hz
31KAX020
700-2000
120v, single phase, 60
Hz
120v—1.0 milliamps @ 7300vdc
50
54
57
Note: Using the EAC on air duct systems designed for airflows lower than 300 CFM for 012-size units, 500 CFM for 016-size units, or 700 CFM for 020-size units, is
not recommended.
Table 2—Pressure Drop At Various Airflows
CFM
300
400
600
800
1000
1100
1200
1300
1400
31KAX012
Pressure Drop (In. wc)
0.005
0.010
0.020
0.030
0.050
0.060
0.065
0.075
0.085
CFM
500
600
800
1000
1200
1400
1600
1700
1800
31KAX016
Pressure Drop (In. wc)
0.010
0.025
0.020
0.028
0.035
0.045
0.065
0.070
0.080
See Service Guide, and Troubleshooting Flow Chart for supplementary information.
CFM
700
800
1000
1200
1400
1600
1800
1900
2000
31KAX020
Pressure Drop (In. wc)
0.010
0.013
0.018
0.023
0.030
0.038
0.045
0.048
0.050
1. Air cleaner is approved only for indoor installation. If outdoor
installation is used, unit must be housed in weather-proof
enclosure.
Step 1—Locating Unit
2. Air cleaner may be placed in horizontal position on its right or
left side or in vertical position on its bottom or back. It must
be installed on inlet air side of heating and/or cooling unit. Be
sure that airflow through air cleaner is in same direction
as airflow arrows on cells indicate.
Fig. 4 shows the air cleaner in the return-air duct of various furnace
installations, with or without air conditioning. Other methods of
installing the unit are permissible if the design criteria outlined in
this section is observed.
A. PLANNING AN INSTALLATION
When planning an installation, consider the following:
2
POWER DOOR
ASSEMBLY
PRE-FILTERS
CELL ASSEMBLY
A91467
Fig. 3—View of Major Components
minimum or minimum specified by air handling equipment.
Temperatures lower than 40°F can cause ionizer wire failure under
certain conditions.
Cabinets will support a maximum weight of 400 lbs. when
installed beneath a vertical furnace or air-handling unit. When
setting furnace on cabinet, do not drop it into place. Position
furnace correctly on cabinet to prevent a corner from slipping
down and damaging cabinet.
NOTE: The maximum operating temperature of the EAC is
125°F.
Step 2—Installation
3. Allow minimum of 16-in. clearance in front of unit for
cleaning and maintenance.
NOTE: See Fig. 4 for suggested installation positions.
Turn off all power to furnace before beginning any procedures.
Never use air cleaner to collect grease or other flammable
contaminants.
Proceed as follows to install EAC:
4. Air outlets and returns must not be blocked with furniture,
drapes, or other objects.
1. Remove and discard existing furnace mechanical filters. They
are not required when using an EAC. Thoroughly clean
blower compartment of furnace.
5. Air cleaner should be installed where all air circulated by
system will pass through it.
2. Move ON-OFF switch to OFF and remove power door by
rotating knob (approximately 10 turns counterclockwise) until
door is free. Grasp power door by knob and remove it from
cleaner cabinet by pulling it towards you. This motion
disengages power supply connector.
B. HUMIDIFIERS
An evaporative, supply-duct-mounted humidifier may be installed
without affecting the EAC. A bypass-type evaporative humidifier
should be installed so that the moist air does not contact the air
cleaner. When an atomizing-type humidifier is used, it should
always be installed in the supply-air system.
3. Slide out pre-filters and air cleaner cells.
4. For Model 016 EAC furnace side application, cut open return
knockout at the side of the furnace cabinet. For Models 012
and 020, cut opening as shown in Fig. 5—Opening Detail.
If an atomizing-type humidifier is installed upstream from the
air cleaner, the efficiency of the electronic cells will be
decreased by high humidity, salts, and minerals. Service
problems will result.
5. In order to prevent air leakage, use foam tape provided to
attach air cleaner to side of furnace or system blower.
NOTE: The unit is shipped for furnace right side application. For
left side application, rotate rear mounting flange 180° by removing
4 screws in the back of the air cleaner. Be sure all 4 screws are in
place after the rotation. Relocate the junction box on the furnace to
the right side, if required.
If the bypass-type humidifier is installed upstream from the EAC,
the following precautions should be taken.
1. Humidifier must be installed as far from EAC as possible.
2. A standard, disposable furnace filter must be installed between
humidifier and EAC to trap water droplets and mineral salts.
6. Hook back flange into the opening. Use air cleaner cabinet
front support flange adjacent to the unit as template and drill
2 holes on furnace casing. (See Fig. 6.)
3. Electronic cells of air cleaner must be washed frequently to
prevent mineral deposit buildup.
C. OUTDOOR AIR
7. Secure the unit by screwing 2 screws provided into drilled
holes. (See Fig. 6.)
When outdoor air is added to the return-air duct, sufficient heat
must be added to maintain the return-air temperature of 40°F
8. Prepare return-air duct for installation to unit. Return air must
use full cabinet opening. Duct should run straight into unit.
3
SUPPLY AIR
PLENUM
COOLING
COIL
AIRFLOW
COOLING
COIL
UPFLOW
FURNACE
3 TO 1
TRANSITION
DUCT WORK
ELECTRONIC
AIR CLEANER
ALTERNATE
AIR CLEANER
POSITION
RETURN AIR
PLATFORM
GAS SUPPLY
UPFLOW APPLICATION
A91468
UPFLOW
FURNACE
ELECTRONIC
AIR CLEANER
FURNACE SIDE APPLICATION
RETURN AIR
PLENUM
A91469
ELECTRONIC
AIR CLEANER
RETURN
AIR PLENUM
FAN-COIL
UNIT
HORIZONTAL
FURNACE
VENT
ELECTRONIC
AIR CLEANER
SUPPLY AIR
PLENUM
SERVICE
PLATFORM
DOWNFLOW APPLICATION
SUPPLY
AIR PLENUM
HORIZONTAL FURNACE APPLICATION
A86134
A91470
Fig. 4—Typical Applications
If flanged sheet metal ducts are metal-screwed to the unit
casing, do not use screws longer than 1/2 in.
Do not baffle any portion of the entering-air side of the air
cleaner.
9. Seal all joints on downstream side of air cleaner to prevent
infiltration of contaminated air.
Step 3—Electrical Connections
All wiring must comply with applicable local and national codes.
Determine best power wiring routing refer to Section A for
Internal Electrical Connections and Section B for External Electrical Connections.
Airflow across air cleaner must be uniform for best results.
Install turning vanes if air cleaner is installed close to an
elbow. Depending on size of furnace, it may or may not be
necessary to reduce ductwork on leaving-air side of air
cleaner. For any application, maintain a 3-to-1 duct reduction
ratio (3 in. of duct length for every 1-in. of reduction in size).
4
FURNACE
KNOCKOUTS
FURNACE
KNOCKOUTS
1⁄8
1⁄8
IN.
DIA HOLE
5⁄8″
18
17 1⁄4″
16 1⁄4″
FURNACE
KNOCKOUTS
IN.
DIA HOLE
5⁄8″
18
17 1⁄4″
16 1⁄4″
1⁄8
18
17 1⁄4″
1
16 ⁄4″ 15 5⁄8″
REAR OF
FURNACE
10 1⁄2″
REAR OF
FURNACE
3 1⁄4″
2 3⁄4″
2 7⁄16″
0
1 3⁄4″
1⁄8
IN.
DIA HOLE
0
4
1⁄4″
5
3⁄4″
012
5 1⁄16″
3 1⁄4″
2 3⁄4″
2 7⁄16″
0
1 3⁄4″
25″
28 1⁄2″
1⁄8
IN.
DIA HOLE
2
0
4
1⁄4″
5
3⁄4″
27
1⁄2″
28 1⁄2″
016
5 1⁄16″
IN.
DIA HOLE
5⁄8″
7⁄16″
3⁄4
IN.
DIA HOLE
1⁄8
IN.
DIA HOLE
2 3⁄4″
1 3⁄4″
REAR OF
FURNACE
0
0
27 1⁄2″
1 5⁄16″
13⁄16″
020
28 1⁄2″
A91471
Fig. 5—Opening Detail
PLUG
relay or sail switch. Use either air cleaner relay P/N
P283-1203 or sail switch P/N 69105D1. (See Fig. 12 or
13.)
FURNACE
OPENING
SCREWS
c. Furnaces with Printed-Circuit Boards—EAC is wired to
furnace terminals EAC 1 and EAC 2. See Fig. 14 for wiring
connections.
BUSHINGS
9. Connect ground wire to base unit ground.
NOTE: For non-corporate furnaces, wire unit using conduit and
strain relief the wires.
SCREWS
Be sure all internal wiring connections are tight before power
is returned to the unit.
SCREWS
FLANGE
B. EXTERNAL ELECTRICAL CONNECTIONS
A89117
Fig. 6—Electronic Air Cleaner Installation
1. Attach power supply conduit to hole in top of EAC. Do not
use extension cord to connect to electrical power source.
2. Cut EAC wires to 6 in. long. Strip the ends. Using fieldsupplied wire nuts connect power leads to black and white
pigtails extending from female receptacle. (See Fig. 10.)
Be sure all incoming power is off before beginning any
procedures.
NOTE: Do not connect aluminum conductor to electrical connections of the EAC. Use copper wire only.
A. INTERNAL ELECTRICAL CONNECTIONS
Proceed as follows to make internal electrical connections.
3. Connect power leads as follows:
1. With power door removed, remove junction box cover adjacent to female plug on casing upper channel. (See Fig. 10.)
a. Single-Speed Furnaces. EAC is wired in parallel with fan
motor. (See Fig. 11.)
2. Install protective bushing from inside the air cleaner into the
upper hole on the side channel adjacent to the furnace. Be sure
bushing projects into furnace opening protecting wires from
sharp edges on cabinet opening.
b. Multispeed Direct-Drive Furnaces. If the EAC is wired
to a multispeed direct-drive motor, it must be isolated by a
relay or sail switch. Use either air cleaner relay P/N
P283-1203 or sail switch P/N 69105D1. (See Fig. 12 or
13.)
3. Install protective bushing through top rail as shown in Fig. 10.
4. Plug unused hole on top of unit with plug provided in parts
bag.
5. Route power wires through bushing channel at top of cabinet,
down side channel, and through bushing in side channel and
into furnace opening. (See Fig. 10.)
6. Replace cover of junction box.
7. Install wire cover (provided in parts bag) under top flange and
secure to side channel with screw provided.
8. Connect power leads as follows:
a. Single Speed Furnaces—EAC is wired in parallel with fan
motor. (See Fig. 11.)
b. Multispeed Direct-Drive Motor—If the EAC is wired to
a multispeed direct-drive motor, it must be isolated by a
c. Fan Coils. EAC (120v) MUST be wired to fan coil circuit
board terminals EAC 1 and EAC 2, if applicable, ONLY as
shown in Fig. 15. Terminals EAC 1 and EAC 2 supply
240vac. Terminal EAC 1 is energized continuously; terminal EAC 2 is energized only with the fan motor.
4. Connect EAC ground wire (green) to appropriate supply
ground.
5. Replace cover of junction box.
Single-Speed Furnaces—Wire EAC in parallel with fan motor.
(See Fig. 11.)
Multispeed direct-drive furnaces—If the air cleaner is wired to
a multispeed direct-drive motor, it must be isolated by a relay or
sail switch. Use with either air cleaner relay P/N P283-1203 or sail
switch P/N 69105D1 (See Fig. 12 or 13).
5
FURNACE
BAFFLES
ELECTRONIC
AIR CLEANER
A91472
Fig. 7—Installing Baffles if Needed
IONIZER
WIRES
BUSHING HOLES
PREFILTERS
FURNACE
PROPER
CONTACT
SPRING
LOCATION
AIRFLOW
FURNACE
CONTROL
BOARD
TOP PLUG
GROUND
AIRFLOW
WIRE COVER FOR
CHANNEL
CHARGED
COLLECTOR
PLATES
A91473
INTERNAL
POWER WIRE
ROUTING
Fig. 8—Reversing Components for Opposite Airflow
BUSHING HOLES
WIRE CONN.
BLK
*ON 208/240 UNITS ONLY
A94155
FIELD WIRING
WHITE
Fig. 10—Wire Routing
GREEN
FIELD WIRED
POWER
GROUND
SUPPLY
*TRANSFORMER
ASSY. FOR
FIELD CONN.
WHITE
WHT WHT
LINE
VOLTAGE
BLK
BLK BLK
HIGH
VOLTAGE
BLU
BLU
POWER
INTERLOCK
LED
BLU
SWITCH
BLU
(DO NOT
FINAL ASSEMBLY
Kit No. KFAIR0101ACR is offered for use when 24vdc relays
may not be available. The kit contains a 24vdc relay which mounts
directly inside the EAC cabinet. User supplied 110vac is activated
be this relay to power the air cleaner when G or W are present.
This preferred connection allows low-voltage wiring to be run
between the fan coil and the air cleaner and eliminates the
problems of controlling a 110vac air cleaner from the 230v power
supplied by the fan coil. (See Fig. 16.)
UNIT
BYPASS)
The ICM2 blower motor used in the FK4B Fan Coil is controlled
by low-voltage signals. The familiar 230vac air cleaner
control/power signal, EAC 1 and EAC 2, is not available. These
signals are replaced by a 24vdc signal which is provided at circuit
board terminals AUX 1 and AUX 2. This 24vdc signal is present
when either G or W is present and is active in all heating and
cooling modes.
Y
OPERATION LIGHT
A89073
Fig. 9—Line-to-Line Wiring Diagram
Fan Coils—EAC (120v) MUST be wired to fan coil circuit board
terminals EAC 1 and EAC 2 if applicable, ONLY as shown in Fig.
15. Terminals EAC 1 and EAC 2 supply 240vac. Terminal EAC 1
is energized continuously. Terminal EAC 2 is energized only with
the fan motor.
In heat pump applications, the G signal is present in both cooling
and heating modes, permitting the EAC to be controlled from the
G signal only. For the application, a user supplied 24vac relay can
be driven by the G terminal, eliminating the need for the relay kit.
The selection and mounting of this AC relay is the responsibility
of the installer.
6
POWER SUPPLY (120V-60HZ-10)
BLK
WHT
FAN SWITCH
POWER SUPPLY (120V-60HZ-10)
BLK
FAN RELAY FAN SWITCH
GRD
FAN MOTOR
LO
C
HI
FAN MOTOR
WHT
OR
RED
GRN
GRD
BLK
TO "G" ON
THERMOSTAT
WHT OR YEL
GRN
ELECTRONIC
AIR CLEANER
AIR CLEANER
RELAY (FIELD
SUPPLIED)
TO "C" ON
THERMOSTAT
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
24-V FIELD WIRING
A91474
Fig. 11—Single-Speed Furnaces
BLK
YEL
OR
WHT
ELECTRONIC
AIR CLEANER
A91475
POWER SUPPLY (120V-60HZ-10)
BLK
Fig. 12—Multispeed Direct-Drive Furnaces with FieldSupplied Air Cleaner Relay
WHT
FAN SWITCH
FURNACE
EAC1 EAC2 TERMINAL
BOARD
GRD
FAN MOTOR
GRD
GRN
BLK GRN
BLK
WHT OR YEL
YEL OR WHT
ELECTRONIC
AIR CLEANER
ELECTRONIC
AIR CLEANER
SCREW TERMINAL
WIRENUT, FACTORY SUPPLIED
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
120-V FIELD WIRING
A91474
A91477
Fig. 13—Multispeed Direct-Drive Furnaces with FieldSupplied Sail Switch
EAC1
EAC2
Fig. 14—Furnaces with Printed-Circuit Board
OR
EAC1
EAC2
240:120-V
30 VA
TRANSFORMER
TO 240-V
ELECTRONIC AIR
CLEANER (WITH
240-V CONVERSION
KIT INSTALLED)
TO 120-V
ELECTRONIC
AIR CLEANER
SCREW TERMINAL
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
A91489
Fig. 15—Fan Coils with Printed-Circuit Control Board
7
2. Restore power to system.
110 VAC BRANCH CKT
3. Move ON-OFF switch on power door to ON position.
GND HOT NEUT
4. Set room thermostat to start blower.
WHT
GRN
AUX1 AUX2
BLK
FK4B
5. Check to see if operation light is glowing. This indicates
proper power to the cells.
EAC
PLUG
NOTE: Leave these Installation Instructions with the owner to
enable to the owner to perform routine maintenance and service.
Step 5—Routine Maintenance and Service
Your new EAC requires periodic maintenance for optimum
performance. You may perform this service or have your serviceman handle it for you.
24 VDC RELAY
Cleaning of the cell assembly and pre-filter is required 2 or 3 times
a year. Frequency will depend on size of home, number of
occupants, smoking habits, etc.
The odor of ozone may be noticeable during operation of an EAC.
A somewhat higher ozone generation rate during the first week or
2 of operation may be caused by sharp edges on some of the new
high-voltage parts. Normal use dulls these sharp edges in a short
time.
A93217
Fig. 16—KFAIR0101ACR Wiring Layout
The odor of ozone is detectable by an average person at levels as
low as 0.0030 to 0.010 parts per million (PPM). The concentration
of ozone produced in a home by an EAC ranges from 0.006 to
0.020 PPM. Average concentration of ozone in the air of major
cities range from 0.020 to 0.040 PPM and even higher. This is well
above the level produced by an EAC.
Be sure all field electrical connections are tight before power
is restored to the unit.
1. Slide pre-filters and air cleaner cells into cabinet.
NOTE: Units are shipped for air entering the right-hand side of
the air cleaner. Reverse the position of the pre-filter and the air
cleaner cells in the cabinet for air entering the left-hand side of the
air cleaner as indicated in Fig. 8. Be sure all airflow arrows are
pointing in the direction of the airflow through the air cleaner and
that the pre-filter is on the entering-air side.
Because normal maintenance (cleaning) is so simple, most homeowners will choose to personally perform the necessary operations.
Clean the unit where dust from air cleaner cells will not
soil carpets or floor.
2. Check contact spring location. Cell contact springs MUST be
relocated for left-hand units or applications. Remove screw
holding contact spring to cells and reinstall at opposite end.
(See Fig. 24.) Be sure all airflow arrows are pointing in the
direction of the airflow through the air cleaner and that the
pre-filters are on the entering-air side.
Before removing the electronic cells, be sure to de-energize
the system fan to avoid any possibility of circulating unfiltered air back into the system.
To gain access to the pre-filter and air cleaner cells, simply push
power switch to OFF position and remove the power door. Lay it
to the side. Pull out the first-stage pre-filters and vacuum from
entering-air side, or wash in detergent and water. Allow to dry
thoroughly. Reinstall. Do not spray pre-filters with any filter
coatings.
3. Deform pre-filter guide on side opposite pre-filters to that
pre-filters may not be reinstalled incorrectly.
4. Replace power door by first inserting bottom tab into place on
bottom edge of door opening. Push top of door and guide door
attachment knob screw into threads. Turn knob clockwise
until screw engages threads in casing. Turn knob clockwise
until door is secure. Ensure good electrical contact between
power door and unit components.
A. CLEANING THE CELL
For optimum performance the electronic cells must be washed
regularly to remove the dirt cleaned from the air. The required
frequency of cell washing varies from one environment to another,
depending on a large number of variables. In nearly all cases, the
correct period is between 1 and 6 months. Where building
infiltration and internal generation of dust is low, as in a smaller
home, washing every 5 or 6 months may be adequate. Where there
is considerable infiltration, cooking, dust, and tobacco smoke,
more frequent washing will be required. If a heavy buildup of dirt
is found on the collector plates or the cell is not clean after
washing, it should be cleaned more often. If there is only light dirt
on collector plates, the period between washing can probably be
lengthened. The electronic plate cells may be washed a number of
different ways, depending on home-owner preference.
5. Unit can be installed with airflow through cabinet in either
direction. Apply airflow decal provided to cabinet, observing
actual airflow direction. (See Fig. 24.)
Step 4—Startup and Adjustments
The electronic components of the unit convert the incoming vac to
vdc power supply. Unfiltered, contaminated air passes through an
aluminum mesh pre-filter which removes large air borne particles
and distributes the air uniformly across the ionizer-collector
assembly. The air passes through the ionizer and is charged with
7300vdc. The ionizer imparts a positive electrical charge to the
remaining contaminants. As the air continues through the collector
section, the charged contaminants are attracted to the alternately
charged collector plates. The charged contaminants are electrostatically held by the collector, purifying the airstream.
1. Automatic Dishwasher Washing—The easiest and most convenient way to remove the accumulated dirt from the platetype electronic cells is to wash them in an automatic dishwasher.
1. Ensure that entire EAC is clean, dry, and free of foreign
objects.
8
115-VAC
NEUTRAL
TERMINALS
115-VAC
LINE
VOLTAGE
CIRCUIT
BREAKER
115-VAC
TRANSFORMER
1
COM
PR-2
L2
CFR
LO
L1
HFR
PR-1
1
4
7
2
5
8
3
6
9
PL-1
3
HI
9-PIN
CONNECTOR
IDR
HEATING
SPEED TAP
TERMINAL
EAC-1
24-VAC COMMON
COOLING
SPEED TAP
TERMINAL
EAC-2
SEC-2
24-VAC POWER
SEC-1
MAX. 1.0 AMPS
115-VAC
W
Y
R
C
G
3-AMP
UNCUT: 120 SEC
FU FUSE
CUT: 180 SEC
24-VAC FUSE
3-AMP ONLY
GROUND
SCREW
REQUIRED
24-VAC
COMMON
CES0110074-00
R
Y
W
G
ELECTRONIC
AIR-CLEANER
TERMINALS
C
24-VAC
THERMOSTAT
TERMINALS
BLOWER
OFF-DELAY
BLOWER
OFF-TIME
ADJUSTMENT
ACCR
A91490
A91226
Fig. 17—EAC Connection to Electronic Condensing
Upflow Gas Furnace
Fig. 18—EAC Connection to Continuous Pilot Gas
Furnace
EAC-ELECTRONIC AIR CLEANER
TERMINALS (115-VAC
1 AMP MAX)
BLOWER OFF-DELAY
ADJUSTMENT SWITCH
24-VOLT
THERMOSTAT
G
TERMINALS
R
Y
W
Com
HUM-HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX)
HUM-HUMIDIFIER
TERMINAL
(24-VAC 0.5 AMP MAX)
LED OPERATION
& DIAGNOSTIC LIGHT
MAIN BLOWER
CONTROL WIRE
CONNECTOR
HARNESS
CONNECTOR
SEC-1
3-AMP FUSE
COOL
HEAT
24V TRASFORMER
SEC-2
24-VOLT
THERMOSTAT
TERMINALS
TRANSFORMER
24-VOLT
CONNECTIONS
SPARE 1
CONTINUOUS
FAN (CF) SETUP
SWITCHES
SPARE 2
EAC 1 (BLACK)
115-VAC (L2) NEUTRAL
CONNECTION
EAC 2 (WHITE)
HOT SURFACE
IGNITOR CONNECTOR
EAC-ELECTRONIC AIR
CLEANER TERMINALS
(115-VAC 1 AMP MAX)
3-AMP FUSE
STATUS AND
DIAGNOSTIC
LED LIGHTS
SETUP SWITCHES
(SW) AND
BLOWER OFF DELAY
SETUP SWITCHES
A94081
A94082
Fig. 19—EAC Connection to Multipoise Fixed
Capacity Furnace Control Board
Fig. 20—EAC Connection to Multipoise Variable
Speed Furnace Control Board
turning on system fan continuously for approximately 30 to
60 minutes before restoring power to air cleaner.
a. Place electronic cells on sides with ionizer section down
(airflow arrows pointing up) on lower rack of dishwasher.
e. With some dishwashers it may be necessary to re-run
complete cycle or rinse cycle after cells are removed if
homeowner notices dirt stains or residue inside dishwasher.
Use care to avoid damage to the collector plates when placing
the cells in the dishwasher.
NOTE: For some dishwashers with a center spray arm, it may be
necessary to remove the top basket to fit one or both cells inside.
2. Manual Washing—The electronic cells may be washed manually by soaking them in a solution of automatic dishwasher
detergent.
b. Use detergent in accordance with dishwasher manufacturer’s instructions.
a. Provide suitable container large enough to hold one or both
cells.
c. Allow dishwasher to run through its complete wash cycle.
You may also allow it to run through its complete dry
cycle, although this is not necessary.
b. Select automatic dishwasher detergent that dissolves
readily in hot water. Depending on local water conditions,
some brands may form a precipitation or scum. If a
noticeable scum floats to surface, try another brand. The
brand the homeowner finds gives the best results in his
dishwasher will probably give best results washing the
electronic cells.
The electronic cell will be very hot at the end of the
dishwasher’s cycle. Allow it to cool before handling. Hot
water may accumulate in the tubes supporting the collector
plates. Tip the cells to drain tubes.
d. Dry cells completely before turning on power to air
cleaner. This can be done by replacing cells in cabinet and
9
PARK
FU1
3
EAC-1
EAC-2
SEC-2
SEC-1
HI-GAS
-HEAT
3
ELECTRONIC
AIR CLEANER
TERMINALS
(115 VAC, 1 AMP MAX)
3-AMP
FUSE
LO-GAS
-HEAT
2
HI-COOL
1
L2
6
COM
9
5
L1
8
4
PR1
7
PR2
EAC - ELECTRONIC AIR CLEANER
(115-VAC 1 AMP MAX)
10 11
12
7
8
9
4
5
6
1
2
3
LED DIAGNOSTIC
LIGHT
HUMIDIFIER TERMINAL
(24 VAC, 0.5 AMP MAX)
3-AMP FUSE
EAC-2
EAC-1
3
1
TWIN
TEST
LED
MASTER SLAVE
1
HUM
JW9
G
HUM-1
W
FURNACE AND
BLOWER OFF
DELAY SETUP
SWITCHES
Y
R
C
G
COM
24 V
W/W1
Y/Y2
R
BLOWER OF DELAY SELF TEST
90 100 180 225
24-VOLT
THERMOSTAT
TERMINALS
SELF-TEST PINS
24-VOLT THERMOSTAT
TERMINALS
1 2 3 4
W2
OFF
ON
BLOWER OFF-DELAY
ADJUSTMENT CONTROL
A94083
A91060
Fig. 21—EAC Connection to 2-Stage "C" Furnace
Control Board
Fig. 22—Internal Furnace Electrical Connections for
EAC
JUNCTION
BOX
COVER
AIRFLOW
DECAL
EAC1
AIR FLOW
PROPER
SPRING
LOCATION
EAC2
A94084
Fig. 23—EAC Terminals on Control Center
Do not splash detergent solution in eyes, and avoid prolonged
contact with skin. Keep detergent and solution out of reach of
children.
c. Before placing cells in washing container, pour in detergent. Use approximately 3/4 cup per cell if container is
about size of cell. Add enough very hot water to cover
cell(s).
d. After detergent has completely dissolved, place electronic
cell(s) in container.
e. Soak cells for 15 to 20 minutes, slosh several times, and
remove.
f. Rinse cells with fine water spray.
g. Fill wash container with clean, hot water and soak cell(s)
for 5 to 15 minutes.
h. Remove cell(s) and let water drain. If water draining from
them feels slippery, detergent still remains. Repeat rinsing
until water from them no longer feels slippery. Inspect for
cleanliness.
i. When both cells have been washed and thoroughly rinsed,
check cells from broken wires and bent collector plates. If
none are found, replace electronic cells and pre-filter in
cabinet. Observe proper airflow arrows on cabinet and cells.
A89420
Fig. 24—Final Assembly Detail
j. Dry cells completely before turning on power to air cleaner.
This can be done by turning on system fan continuously for
approximately 30 minutes before turning on power to air
cleaner.
SERVICE GUIDE
Procedures in this section should be performed only be
qualified service personnel.
Electrical shock can cause injury or death.
1. During troubleshooting procedures, dangerous line-voltage
circuits are exposed. Use care to avoid hazard of electrical
shock or damage to equipment.
10
2. Check male and female plug and receptacle and associated
wire connection on power door and cabinet for damage and
proper wiring.
3. Visually inspect air cleaner cells, visually inspecting for:
a. Heavy dirt accumulation (Wash cells—see Cleaning The
Cell section.)
b. Bent collector plates (straighten if necessary).
c. Broken ionizer wires (replace if necessary).
Check to see that ionizer springs are seated properly in place.
Improper seating may cause arcing.
d. Ionizer springs broken or bent (replace if necessary).
Check to see that ionizer springs are seated properly in place.
Improper seating may cause arcing.
e. Insulators cracked or broken (replace if necessary).
Deterioration of metal around insulator indicates defective
insulator (Replace insulator).
f. Ionizer grid deformed (repair or replace as necessary).
A91478
Fig. 25—Checking 120-V Power Pack
2. Although not lethal, high-voltage output of power supply can
produce painful shock.
Check for short between high-voltage contact (found in center
of rectangular ceramic insulator) and frame of cell, with
ohmmeter. Resistance should be infinite (open circuit).
If the light does not glow when cells are removed:
4. Remove power door from unit and check for power to air
cleaner cabinet. This can be accomplished with a volt meter.
Being careful to avoid electrical shock, check output at the
receptacle with voltmeter. Reading should be approximately
120v (240 for 240-v conversions).
3. Be sure to properly ground air cleaner and its components
before testing.
4. Do not touch any portion of air cleaner when energized.
TOOLS AND EQUIPMENT
Servicing the EAC can be accomplished with only a few tools:
1. Screwdrivers: Long shank, plastic or rubber handles (2 required).
During normal operation, power to the cabinet should only be
activated while system blower is operating. To avoid building up
an undesirable concentration of ozone DO NOT operate EAC
when blower is off.
2. Needle nose pliers for stringing ionizing wires.
3. High-voltage jumper cord.
4. High-voltage tester: range to 12 KVDC (DC voltage probe
recommended).
5. Disconnect voltage and remove access panel on power door
and visually check to see that all wire connectors are firm and
that wires are not broken. Repair or replace with 18-gauge
wire minimum.
5. Grounding wire.
Step 1—Electrical Troubleshooting Guide
6. Inspect ceramic insulators for dirt or damage. Clean or
replace. Deterioration of metal around insulator indicates
defective insulator (Replace as necessary).
The following troubleshooting procedure is a simplified approach
to aid service person in repairing any malfunction in the EAC. By
following this troubleshooting procedure and operation light, the
malfunction can be isolated to certain areas in the EAC.
Inspect for visual damage.
NORMAL OPERATION
A possible shock hazard exists. Do not allow arcing for a
prolonged period of time. The power supply output can be
checked with a high-voltage voltmeter. The output should
read between 9000 and 11000 vdc. If the output is below 7500
vdc, replace the power supply.
For normal operation of an EAC, the system blower should be
running and the air cleaner switch should be ON. This will allow
the unit to be energized and cause the light on the power door to
glow. Occasional arcing by an EAC is normal (the light on the
power door will flicker). This can result when lint or large particles
of dirt are not stopped by the pre-filters. The dirtier the EAC
becomes, the more likely occasional arcing will occur. Continuous
arcing may indicate cleaning is necessary. The EAC should
operate only when the system blower is running.
7. Check switch and light circuit by applying electrical power to
plug on power door. This can be accomplished with jumpers
from cabinet receptacle. Attach grounding wire between
power door base and cabinet.
ISOLATING MALFUNCTIONS
Switch on the EAC and energize the blower system. If the light
does not glow, remove the cells and replace the door. If the light
glows with the cells removed, the problem is within the cell or
cabinet. Proceed to items 1 through 3. However, if the light does
not glow, proceed to items 4 through 10.
A possible shock hazard exists. Be careful not to short out the
power supply. The buss bar and contact plate carry live high
voltage current on — 7300vdc, 1 MA.
The LED light circuit output can be checked with a voltmeter. The
reading should be 4vac.
It may be necessary to perform items 1 through 3 after completing
items 4 through 10.
8. Check power supply.
1. Check spring on cell to see if it is bent, sprung, or deformed.
Check to see that it makes good contact with door. (Repair or
replace.)
a. Place screwdriver on ground plate (access panel). At the
same time move shank portion of screwdriver towards
high-voltage output of power supply. If arcing occurs when
11
BLOWER ON
ENERGIZE
UNIT
LIGHT ON
UNIT
OPERATING
PROPERLY
IF CELLS
IN PLACE
LIGHT OFF
REMOVE
CELLS
LIGHT IS ON
LIGHT OFF
CHECK CELLS
CONTACT
SPRING
CHECK LIGHT,
LIGHT
CIRCUIT
CHECK:
WIRING
INSULATORS
POWER
SUPPLY
A91482
Fig. 26—Electrical Troubleshooting Flow Chart
screwdriver comes within approximately 1/8 in. of power
supply, power supply is operating properly. If no arcing
occurs, power supply is defective. Replace power supply.
b. Use high voltage tester. Voltage output should be between
9000 and 11000vdc.
12
Electrical Troubleshooting Flow Chart
PROBLEM
Operation light off
Unit snaps or arcs continuously
Humming noise
Air cleaner does not clean dirt
Radio or TV interference
White dust on furnishings
POSSIBLE CAUSES
REMEDY
Shorted cells.
Defective light.
Defective power supply.
See Electrical Troubleshooting Guide section.
Blower not operating.
Energize blower.
Cells wet either due to high humidity or from washing.
Cells will dry.
Line voltage too high.
Adjust line voltage.
Cells need cleaning.
Clean cells.
Broken ionizer wire.
Replace wire.
Broken contact spring on cell.
Replace spring.
Broken insulator in cell.
Replace insulator.
Broken insulator in power door.
Replace insulator.
Foreign material lodged in ionizer or between plates.
Remove object.
Bent plates.
Straighten.
Improper wiring connections.
Correct
Loose ionizer wires.
Replace or repair.
Ionizer wires not centered.
Center wires between plates.
Excessively dirty ionizer or collector.
Clean.
Deformed contact spring on cell.
Adjust spring.
Lock of power to cells because of improper alignment of contact
spring cells to power door.
Adjust alignment or replace spring.
Defective interlock plug or receptacle.
Replace
Air volume too great.
Reduce air volume to design CFM.
Leaks in ductwork on clean air side of air cleaner.
Seal.
Dirty air not being delivered to air cleaner.
Check return-air grilles for obstruction by furniture, drapes, etc.
Remove.
Uneven air distribution across face of unit. Uneven air distribution across face of unit my be indicated by uneven loading pattern of dirt in collector section of air cleaning cells. The enteringair side of collector stage should be evenly covered with dirt. In
the case of the two cell units, each cell should have an even
loading pattern.
Install turning vanes of air baffles. CAUTION: Do not block off
any of the entering-air side opening to the unit.
Accumulation of foreign particles lodged in ionizer section
Remove.
Unit improperly grounded.
Provide good ground to power pack.
Ground line of supply line voltage not properly grounded.
Correct.
Loose ionizer wires.
Replace.
Loosely connected components or primary-voltage wiring.
Tighten.
Defective power pack.
Replace.
Dents in collector section or ionizer section.
Straighten.
Improper contact between power door and cells.
Adjust alignment of contact spring.
Weak-station/poor ground.
Add E.M.I./R.F.I. filter in power line.
Defective insulator.
Replace.
This dust can be described as "clean dirt" and is composed
mainly of lint, which because of its weight settles out of the living This problem requires no solution. It is visible evidence that the
space before it reaches the air returns. It is "white" because the air cleaner is cleaning up the staining and soiling dirt particles
submicron dirt particles, which normally would color it and renfrom the living space.
der it invisible, have been removed from the air space.
Initial break-in period may have a noticeable ozone odor.
Ozone odor
See Maintenance and Routine Service section.
Air volume too low.
Increase air volume to design CFM.
Uneven air distribution across face of unit.
Ensure full opening of return-air is used. Do not block off any
part of return surface area.
Air cleaner oversized for application.
Size air cleaner per design CFM rating.
Air cleaner not shutting off during blower off cycle.
Check wiring and ensure that the air cleaner does not operate
when blower is off.
13
Copyright 1994 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231
49004c
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
PC 101
Catalog No. 533-135
Printed in U.S.A.
Form 31KAX-9SI
Pg 14
6-94
Replaces: 31KAX-8SI
Tab 7a 9a