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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.

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.

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.

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 electro-
statically held by the collector, purifying the airstream.

1. Ensure that entire EAC is clean, dry, and free of foreign

objects.

2. Restore power to system.

3. Move ON-OFF switch on power door to ON position.

4. Set room thermostat to start blower.

5. Check to see if operation light is glowing. This indicates

proper power to the cells.

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 service-
man handle it for you.

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.

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.

Because normal maintenance (cleaning) is so simple, most home-
owners will choose to personally perform the necessary operations.

Clean the unit where dust from air cleaner cells will not
soil carpets or floor.

Before removing the electronic cells, be sure to de-energize
the system fan to avoid any possibility of circulating unfil-
tered 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.

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.

1. Automatic Dishwasher Washing—The easiest and most con-

venient way to remove the accumulated dirt from the plate-
type electronic cells is to wash them in an automatic dish-
washer.

Fig. 16—KFAIR0101ACR Wiring Layout

A93217

24 VDC RELAY

FK4B

110 VAC BRANCH CKT

AUX1 AUX2

GND HOT NEUT

GRN

BLK

WHT

EAC

PLUG

8

Summary of Contents for 31KAX

Page 1: ...y field converted from right to left hand 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 compo nents are 1 Mechanical pre filters Expanded aluminum mesh first stage filter that removes lint and large dust particles 2 C...

Page 2: ...2 26 1 4 A91466 8 1 2 7 8 IN ELECTRICAL ENTRANCE FOR DUCT APPLICATION REAR MOUNTING FLANGE A 3 16 7 8 2 1 16 C B 21 REMOVABLE POWER DOOR ELECTRICAL ENTRANCE 5 8 IN DIA FOR FURNACE APPLICATIONS LOGO OPERATION LIGHT KNOB ON OFF SWITCH 1 Table 1 Component Information MODEL 31KAX012 31KAX016 31KAX020 Air Volume Range 300 1400 500 1800 700 2000 Electrical Data Input to power door 120v single phase 60 H...

Page 3: ... or minimum specified by air handling equipment Temperatures lower than 40 F can cause ionizer wire failure under certain conditions NOTE The maximum operating temperature of the EAC is 125 F Step 2 Installation NOTE See Fig 4 for suggested installation positions Turn off all power to furnace before beginning any proce dures Proceed as follows to install EAC 1 Remove and discard existing furnace m...

Page 4: ...ion 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 Elec trical Connections Fig 4 Typical Applications A86134 DOWNFLOW APPLICATION RETURN AIR PLENUM FAN COIL UNIT SUPPLY AIR PLENUM ELECTRONIC AIR CLEANER A91468 SUPPL...

Page 5: ...onnect to electrical power source 2 Cut EAC wires to 6 in long Strip the ends Using field supplied wire nuts connect power leads to black and white pigtails extending from female receptacle See Fig 10 NOTE Do not connect aluminum conductor to electrical connec tions of the EAC Use copper wire only 3 Connect power leads as follows a Single Speed Furnaces EAC is wired in parallel with fan motor See ...

Page 6: ... 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 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 th...

Page 7: ...NER FURNACE TERMINAL BOARD SCREW TERMINAL WIRENUT FACTORY SUPPLIED 120 V FIELD WIRING GRD Fig 12 Multispeed Direct Drive Furnaces with Field Supplied Air Cleaner Relay A91475 WIRENUT FACTORY SUPPLIED 120 V FIELD WIRING 24 V FIELD WIRING ELECTRONIC AIR CLEANER BLK FAN RELAY FAN SWITCH FAN MOTOR WHT OR RED YEL OR WHT GRD GRN BLK AIR CLEANER RELAY FIELD SUPPLIED TO G ON THERMOSTAT TO C ON THERMOSTAT ...

Page 8: ...EAC requires periodic maintenance for optimum performance You may perform this service or have your service man handle it for you 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 fi...

Page 9: ... 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 Fig 19 EAC Connection to Multipoise Fixed Capacity Furnace Control Board A94081 HUM HUMIDIFIER TERMINAL 24 VAC 0 5 AMP MAX LED OPERATION DIAGNOSTIC LIGHT HARNESS CONNECTOR 24V TRASFORMER SEC 2 SPARE 1 SPARE 2 EAC 1 ...

Page 10: ...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 Fig 21 EAC Connec...

Page 11: ...f 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 ...

Page 12: ...ower supply b Use high voltage tester Voltage output should be between 9000 and 11000vdc Fig 26 Electrical Troubleshooting Flow Chart A91482 BLOWER ON ENERGIZE UNIT LIGHT ON CHECK CELLS CONTACT SPRING UNIT OPERATING PROPERLY IF CELLS IN PLACE LIGHT OFF REMOVE CELLS CHECK LIGHT LIGHT CIRCUIT CHECK WIRING INSULATORS POWER SUPPLY LIGHT IS ON LIGHT OFF 12 ...

Page 13: ...red 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 Radio or TV interference 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 prope...

Page 14: ...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 Tab 7a 9a PC 101 Catalog No 533 135 Printed in U S A Form 31KAX 9SI Pg 14 6 94 Replaces 31KAX 8SI ...

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