APPLICATION

The high efficiency Electronic Air Cleaner is mounted in the return air duct of a forced air heating, cooling, or ventilating system. It captures a significant amount of the airborne particles 0.5 micron and larger from air circulated through it.

F50F Duct Mounted

Electronic Air Cleaner

PRODUCT DATA

FEATURES

• Available in five sizes to fit most ducts; adapts to airflow from either side.

• Has one or two cells, depending on cabinet size.

• Capacity varies from 1000 cfm (1700 m3/hr) to

• 2000 cfm (3400 m3/hr), depending on size.

• Solid state power supply is self-regulating and maintains peak efficiency during a wide range of cell dirt loading conditions.

• Pressure drop is approximately equal to that of a regular fiberglass filter.

• Electronic cell(s) can be washed in most home dishwashers.

• Galvanized cabinet protects against rust.

• Neon light next to on-off switch tells if air cleaner is powered and if high voltage is present.

• Test button checks system operation.

• Troubleshooting guide mounted inside cell access door.

• Permanent wash reminder schedule included for mounting in convenient location.

• Prefilter screen(s) protects cell(s) from large dirt particles.

® U.S. Registered Trademark

Copyright © 2002 • All Rights Reserved

Contents

Application/Features..........................................................

1

Specifications/Ordering Information ..................................

2

Installation .........................................................................

7

Operation........................................................................... 10

Checkout ........................................................................... 10

Service .............................................................................. 10

Replacement Parts/Exploded View ................................... 15

Electrical Troubleshooting ................................................. 17

68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

SPECIFICATIONS

IMPORTANT

The specifications given in this publication do not include normal manufacturing tolerances. Therefore, this unit may not exactly match the listed specifications. This product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed.

Model:

Electronic Air Cleaner: Includes cabinet, access door, solid state power supply, one or two electronic cell(s) and one or two prefilter(s).

Electrical Ratings:

Voltage and Frequency: Models available for 120V, 60 Hz;

220/240V, 50 Hz; and 240V, 60 Hz. Specify when ordering.

Two cell 120V, 60 Hz models can be converted in the field to 240V, 60 Hz or 220/240V, 50 Hz with the 203365A Conversion Kit.

Power Consumption:

One cell models: 22W maximum.

Two cell models: 36W maximum.

Current Draw: See Table 1.

Ionizer Voltage: 8150 Vdc.

Collector Voltage: 4075 Vdc.

Table 1. Current Draw.

in.

16 x 25

20 x 25

Size mm

406 x 635

508 x 635

No.

Cells

2

2

Max Current (A)

120V 220/240V

0.4

0.4

0.2

0.2

Capacity, Efficiency, Pressure Drop:

See Fig. 1.

Temperature Ratings:

Operating Ambient: 40° to 125°F (4° to 52°C).

Temperature of Airflow Through Cells: 40° to 125°F (4° to

52°C).

Maximum Cell Washing Temperature: 220°F (140°C).

Storage and Shipping Ambient: Minus 40°F to plus 140°F

(minus 40°C to plus 60°C).

Mounting:

Mounts in the return air duct of a forced air heating, cooling, or ventilating system. Mount upstream from the atomizing humidifier. See the Planning the Installation section.

Weight:

See Table 2.

Item

Electronic Cell

(each)

Shipping

Weight

Installed

Weight

(Cells included)

Table 2. Shipping and Installed Weight.

16 x 25 in.

(406 x 635 mm)

Weight

20 x 25 in.

(508 x 635 mm) lb

6

kg

2.7

lb

7-1/2

kg

3.4

33

28

15.0

12.7

38

33

17.2

15.0

Dimensions:

See Fig. 2.

Approvals:

Underwriters Laboratories Inc. Listed: File No. E30954.

Canadian Standards Association Certified: File No.

LR95329-1.

Repair Parts:

See Replacement Parts/Exploded View section.

ORDERING INFORMATION

When purchasing replacement and modernization products from your Total Comfort System wholesaler or distributor, refer to the

Total Comfort System catalog or price sheets for complete ordering number or specify:

1. Order number.

2. Voltage and frequency.

3. Dimensions: 16 x 25 in. (406 x 635 mm), 20 x 25 in. ( 508 x 635).

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

Unitary Product Group Consumer Relations

5005 York Drive

Norman, OK 73069

Phone: (877) 874-7378

68-0271 2

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

AIR CLEANER EFFICIENCY AND PRESSURE DROP AT VARIOUS AIRFLOW RATES.

16 x 25 in.

[406 x 635 mm]

20 x 25 in.

[508 x 635 mm]

4

100

1

90

80

70

60

50

2

3

16 x 25 in.

[406 x 635 mm]

20 x 25 in.

[508 x 635 mm]

400

[680]

500

[850]

600

[1020]

700

[1190]

800

[1360]

900

[1530]

1000

[1700]

1100

[1870]

1200

[2040]

1300

[2210]

1400

[2380]

1500

[2550]

1600

[2720]

1700

[2890]

1800

[3060]

1900

[3230]

2000

[3400]

1 EFFICIENCY RATINGS BASED ON NATIONAL BUREAU OF

STANDARDS INITIAL DUST SPOT METHOD USING ATMOSPHERIC

DUST, AND AMERICAN SOCIETY OF HEATING, REFRIGERATING

AND AIR-CONDITIONING ENGINEERS STANDARDS 52.1-92.

2 MINIMUM RECOMMENDED cfm FOR 16 x 25 in. [406 x 635 mm].

3 MINIMUM RECOMMENDED cfm FOR 20 x 25 in. [508 x 635 mm] MODEL.

4 SELECT SIZE THAT MOST CLOSELY FITS DIMENSIONS OF

FURNACE/AIR HANDLER RETURN AIR OPENING

M20817

Fig. 1. Air cleaner efficiency and pressure drop at various airflow rates.

.25

[62.2]

.20

[49.7]

.15

[37.3]

10

[24.9]

.05

[12.4]

0

3 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

6

3

8 (162)

ELECTRONIC AIR CLEANER

DIM. E

(SEE TABLE)

DIM. A

(SEE TABLE)

DIM. B

(SEE TABLE)

6

3

4

(172)

7

8

(22)

5

8

(16)

DIM. C (SEE TABLE)

DIM. D (SEE TABLE)

7

8

(22)

IN.

F50F SIZE

MM

16 X 25

20 X 25

406 X 635

508 X 635

IN.

DIM. A

MM

14 7/16

18 7/16

367

468

IN.

DIM. B

MM

16 3/16

20 3/16

411

513

IN.

DIM. C

MM

23 1/4

23 1/4

591

591

IN.

DIM. D

MM

25 1/2

25 1/2

648

648

IN.

DIM. E

MM

2 3/4

2 3/4

70

70

M20814

Fig. 2. Electronic Air Cleaner installation dimensions in in. (mm).

PLANNING THE INSTALLATION

Application

The is used in a forced air heating, cooling, or ventilating system. It removes airborne particles from the air circulated through it. All models have an internal air flow switch to operate the when the system blower is on.

Review Installation Requirements

The air cleaner should be installed where all the air passing through the system circulates through it. The best location is in the return air duct next to the blower compartment so the air cleaner can help keep the blower motor and evaporator coils clean.

IMPORTANT

Do not mount in the discharge air duct.

For most efficient air cleaning, airflow must be spread evenly across the face of the air cleaner. If the duct is a different size than the air cleaner cabinet, gradual transitions are recommended. If the duct turns sharply just before the air cleaner, turning vanes are recommended.

Applications with Air Conditioning

The air cleaner should be installed upstream from the evaporator coil. The air cleaner will help keep the coil clean, reducing maintenance.

68-0271 4

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

Applications with a Humidifier

An evaporative humidifier can be mounted upstream from the air cleaner. An atomizing humidifier should be mounted downstream from the air cleaner, even though hard water salts will be blown into the living space and deposited as dust.

If an atomizing humidifier must be mounted upstream from the air cleaner:

1. Mount it as far as possible upstream from the air cleaner.

2. Install a standard disposable furnace filter between the humidifier and the air cleaner to trap water droplets and hard water salts.

3. Frequently clean the air cleaner to prevent a hard water salt buildup.

NOTE: The volume of water that passes through an atomizing humidifier can overload the air cleaner, resulting in hard water salts being deposited as dust in the living space.

Applications with an Activated Carbon Filter

An activated carbon (charcoal) filter can be used to remove odors or other gaseous contaminants (not particle-based) that are not removed by the air cleaner. Locate the carbon filter:

• Downstream from the air cleaner. This means that dust from the carbon filter will not be collected by the air cleaner and will be deposited in the living space.

• Outside the air cleaner cabinet. Some carbon filters are combustible and contact with high voltage could result in smoke or fire.

• Where carbon granules cannot fall into the electronic cell. If necessary, use a disposable furnace filter between the carbon filter and the electronic cell.

• With proper transitions, if the activated carbon filter requires a differently sized duct than the air cleaner. Allow 20 degrees expansion per side, per fitting.

NOTE: Total Comfort System does not offer carbon filters.

Refer to an activated carbon filter manufacturer for sizing and application.

Applications with Outdoor Air Intake

Return air temperature must be at least 40°F (4°C). Lower temperatures can cause ionizer wire failure. If outdoor air is used, warm it upstream from the air cleaner by:

• Making sure the outdoor intake is far enough upstream from the air cleaner so the return and outdoor air is thoroughly mixed. Stratified air can dump a stream of very cold air into one section of the air cleaner.

• Adding baffles upstream from the air cleaner to force thorough air mixing.

• Installing a Total Comfort System Home Ventilation System that transfers up to 80 percent of the heat from the exhaust air to the incoming outside air. This keeps the incoming air above 40°F (4°C) and reduces energy usage.

• Installing a preheater if large amounts of outdoor air are used. The preheater, which could be an electric strip heater or hot water coil, should be controlled by a thermostat. Hot water or steam coils should be protected by a freeze-up control.

Choose Location

Choose a location that is readily accessible for regular inspection and cleaning. Allow at least 13 in. (330 mm) in front of the access door for removing the prefilter and electronic cell. Allow enough room above the power supply so it can be serviced without removing pipes, ducts, or other heating system components.

The air cleaner must be installed where the temperature will not exceed 40° to 125°F (4° to 52°C).

Choose Mounting Position

WARNING

Heavy Equipment Hazard.

Can cause injury or equipment damage.

Do not mount air cleaner with access door facing down because latch may not hold, and cell and prefilter can fall unexpectedly.

NOTE: Nothing holds the cell and prefilter in place when the access door is opened.

The air cleaner can be mounted in any position except with the access door facing down. A list of air cleaner mounting positions for a variety of furnace installations follows.

NOTE: At least 13 in. (330 mm) clearance is required between the access door and any obstructions for cell and prefilter maintenance.

— Upflow Highboy furnace: Side installation; air cleaner is mounted vertically where return enters side inlet of furnace. See Fig. 3A.

— Upflow Highboy furnace: Installation beneath furnace (air cleaner cabinet can easily support weight of furnace and air conditioner coil). Air cleaner is mounted horizontally where return enters from below. See Fig. 3B.

— Upflow Highboy furnace: Closet installation. Air cleaner is mounted vertically on furnace between furnace and louvered return air opening in closet door. See Fig. 3C.

— Lowboy furnace: Air cleaner is mounted horizontally in return plenum just above furnace, opposite of supply plenum. See Fig. 3D.

— Downflow Counterflow furnace: Air cleaner is mounted horizontally in return duct or plenum just above furnace.

See Fig. 3E.

— High capacity system: Two or more air cleaners can be used together. See Fig. 3F.

— Electric furnace or heat pump: Single cell air cleaner is mounted with access door on top. See Fig. 3G.

— Horizontal furnace: Air cleaner is mounted vertically where return enters. See Fig. 3H.

5 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

A

B

C

D

E

G

F H

M11973

Fig. 3. Mounting positions with variety of furnace installations.

Determine Duct Design Requirements

The air cleaner is adaptable to all new or existing forced air heating, cooling and ventilating systems used in residential applications. Transitions, turning vanes, or offsets may be needed in some applications for effective operation.

Transitions

Transitions are needed when the duct is a different size than the air cleaner cabinet. Gradual transitions reduce air turbulence and increase efficiency. Limit expansion to no more than 20 degrees or about 4 in. per running foot (100 mm per 300 linear mm) on each side of a transition fitting.

See Fig. 4.

CHANGE DUCT SIZE GRADUALLY TO MINIMIZE TURBULENCE.

20 DEGREE EXPANSION PER SIDE PER

FITTING (4 in. PER LINEAR FOOT

[100 mm PER 300 LINEAR mm]).

RETURN

AIR DUCT

TRANSITION FITTING

ELECTRONIC AIR CLEANER CABINET M5626A

Fig. 4. Change duct size gradually to minimize turbulence.

Turning Vanes

If the air cleaner is installed close to an elbow or angle fitting, install turning vanes inside the angle to distribute airflow more evenly across the face of the cell. See Fig. 5.

68-0271 6

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

Offsets

If the duct connection to the furnace in a side installation allows less than 7 in. (178 mm) for mounting the air cleaner cabinet, add an offset to the elbow. See Fig. 5.

TYPICAL USE OF DUCT OFFSET TO ALLOW

SPACE FOR ELECTRONIC AIR CLEANER.

LESS

THAN

7 in.

[178 mm]

ELECTRONIC AIR

CLEAN

ER

OFFSET

1

AT LEAST

7 in.

[178 mm]

1 TURNING VANES HELP DISTRIBUTE AIRFLOW EVENLY.

M5627A

Fig. 5. Typical use of duct offset to allow space for electronic air cleaner.

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. After installation is complete, check out product operation as provided in these instructions.

WARNING

Electric Shock Hazard.

Can cause electrical shock or equipment damage.

Do not connect to power before installation is complete.

Unpack Electronic Air Cleaner

❑

Check that all components are included. The electronic air cleaner is shipped assembled. The unit consists of a galvanized steel cabinet, power supply with On-Off switch and neon light, one or two electronic cells and prefilters, access door with test button, and homeowner literature package.

Clean Blower Compartment

❑

Remove and discard the existing furnace filter.

7

❑

Thoroughly clean the blower compartment.

❑

If possible, power vacuum the ductwork to remove accumulated dust in an existing home, or construction dirt in a new home. The electronic air cleaner cannot remove dust that has settled in the blower compartment and distribution ducts.

❑

Check the edges of the furnace fan blades for dirt buildup and clean as necessary. The fan will not deliver the rated cfm if the blades are dirty.

Fasten Cabinet To Furnace

NOTE: This procedure shows a side installation on a typical highboy furnace. You may need to alter the procedure to fit your application.

❑

Remove and set aside the access door, electronic cell(s) and prefilter(s).

❑

Align the cabinet with the return air opening.

❑

Create opening in furnace to match air cleaner cabinet opening.

❑

Install a transition when the furnace and air cleaner openings are different sizes. See Fig. 4.

❑

Place blocks under the cabinet so the unit is firmly supported and level. The 5/8 in. (16 mm) mounting foot on the cabinet hinge plate provides the minimum clearance required for the access door hinge.

❑

Attach the cabinet securely to the furnace. The unit can be attached directly, as shown, or a starting collar can first be fitted in the furnace opening. Either drill holes and fasten with sheet metal screws or rivets, or use slip joints. See

Fig. 6.

Fig. 6. Fasten cabinet to furnace.

M20804

68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

Install Turning Vanes

❑

Mount turning vanes inside the elbow or angle fitting that is directly against the air cleaner cabinet.

Fasten Cabinet To Ductwork

❑

Install a transition when the opening in the air cleaner cabinet and the duct are different sizes. See Fig. 4.

❑

Fasten the other side of the cabinet to the elbow using sheet metal screws, rivets, or slip joints as appropriate. If drilling holes, use locking pliers to help hold the unit in place during drilling. See Fig. 7.

CELL KEY

PREFILTER GUIDES

M5639

DOWNSTREAM

AIRFLOW

CELL

KEY

CELL KEY

SCREW

ALTERNATE

HOLES FOR

KEY

TURNING

VANES

LOCKING

PLIERS

M20815

Fig. 7. Connect ductwork to air cleaner. (Note turning vanes. Locking pliers hold duct to air cleaner cabinet during installation.)

Position Cell Key

The electronic cell must always be installed so the ionizer section is on the upstream side. A factory-installed cell key on the bottom of the cabinet allows the cell to be inserted in only one direction. If the arrow molded into the plastic key points in the same direction as the airflow, the ionizer will always be on the upstream side.

If the position of the key must be reversed, proceed as follows:

1. Remove the electronic cell.

2. Remove the screw holding the cell key in place. See

Fig. 8.

Fig. 8. Position of cell key determines orientation of cell

(arrow on key must point downstream).

3. Turn the key around and place it over the opposite holes. The tab on the bottom fits into the larger hole, and the screw fits into the smaller hole. Make sure the arrow on the key points in the direction of the air flow

(downstream).

4. Tighten the screw into the new hole.

5. Insert the electronic cell. The ionizer section will now be on the air-entering (upstream) side of the cabinet.

Attach Cell Handle(s)

The cell handles are attached to the packing insert inside the access door. They must be installed on the end of the cell closest to the access door. To install:

1. Orient the cell as it will be when installed. The gray contact board must be up and the airflow arrow stamped into the cell must point downstream.

2. Hold the handle sideways and insert the solid tab on the back of the handle into the slot in the cell. Turn the handle 90 degrees clockwise to align the divided tab with the square hole. See Fig. 9.

INSTALL HANDLE ON END OF CELL

CLOSEST TO ACCESS DOOR

ROTATE 90

DEGREES

FOLD TAB

TO LOCK

HANDLE

IN PLACE

M6047A

Fig. 9. Install handle on end of cell closest to access door.

3. Insert the divided tab into the square hole.

4. Fold up the wedge and insert it into the divided tab to lock the handle in place. If necessary, press with a blunt instrument like the end of a pliers.

68-0271 8

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

Reassemble Air Cleaner

❑

Insert the electronic cell with the gray contact board toward the power supply and the airflow arrow pointing downstream. If the cell does not slide easily into the cabinet, check the orientation of the cell key.

❑

Insert the prefilter on the upstream side of the cabinet in the guide provided.

❑

Replace the access door. Insert the tab on the bottom of the door into the slot in the cabinet, then swing it closed and press into place. The door must be firmly in place or the air cleaner will not operate.

Complete Wiring

WARNING

Electric Shock Hazard.

Can cause personal injury.

Do not use an extension cord.

• Assure all wiring complies with local codes and ordinances.

• The line voltage power source must match the voltage and frequency printed on the label inside the access door.

• When the system fan comes on the Air Flow Switch (AFS) senses the negative pressure in the duct and turns the power supply on. If power to the air cleaner is controlled by another switch, the AFS can be disabled by cutting the jumper on the back of the AFS circuit board. See Fig. 10.

❑

Plug the electronic air cleaner directly into the correct voltage and frequency outlet. See Fig. 10 for internal schematic. The air cleaner will operate properly with any fan when wired with conduit or plugged in.

NOTE: To reduce the risk of electric shock, this product has a grounding type plug that has a third (grounding) pin. This plug will only fit into a grounding type power outlet. If the plug does not fit into the outlet, contact a qualified electrician to install the proper outlet. Do not change the plug in any way.

5

BLACK

BLACK

P3

P4

J4

BLACK COLLECTOR

RED IONIZER

RED

TEST

BUTTON

CONTACT

BOARD

BLACK

POWER

SUPPLY

2

1 INTERLOCK SWITCH.

2 SHORTING BAR.

3 AIRFLOW SWITCH DISABLE JUMPER.

4 NEON LIGHT.

J3

P2

P1

BLACK

BROWN

ORANGE

GRAY

VIOLET

BLACK

1

BLACK

W4 W2 W1 W3

3

AIRFLOW SWITCH BOARD

BLACK

M20830

Fig. 10. Internal schematic for electronic air cleaner with W8600F.

❑

Alternatively, the electronic air cleaner can be wired with conduit.

1. Open access door.

2. Remove and retain the (2) screws from the front of the power box and the (2) screws from the sides of the power box. See Fig. 11.

3. In the power box, remove and retain (2) wire nuts that connect the line cord leads to the power box wiring.

4. Remove the power cord green lead from the green grounding screw on the wiring compartment barrier.

5. Remove the power cord and the strain relief.

6. Install the plug (provided with the literature pack) in the hole left by the power cord.

9 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

7. Attach conduit through a power box side knockout.

8. Wire the air cleaner directly to line voltage using wire nuts. See Fig. 12. Secure ground connection to the green ground screw on the wiring compartment barrier.

9. Replace power supply cover and access door.

REMOVING COVER

FROM POWER BOX.

1

2

3

M20806

Fig. 11. Removing cover from power box.

ELECTRONIC

AIR CLEANER

WIRING

COMPARTMENT

BLACK

BROWN

2

L1 (HOT)

L2

1

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND

OVERLOAD PROTECTION AS REQUIRED.

2 THE AIR CLEANER CAN BE COMPLETELY ISOLATED FROM

THE ELECTRICAL CIRCUIT OF THE HVAC SYSTEM UNLESS

REQUIRED BY LOCAL CODE TO USE SAME CIRCUIT. ANY

CONVENIENT HOUSE CIRCUIT CAN POWER AIR CLEANER,

REGARDLESS OF ELECTRICAL RATING OF HVAC SYSTEM.

M5707

Fig. 12. Conduit connection for electronic air cleaner.

OPERATION

Large particles (lint, hair) are caught by the prefilter. As the dirty air passes through the intense high voltage electric field surrounding the ionizer wires, all particles are given an electrical charge. The air then moves through the collector part of the cell where alternate parallel plates are charged positively and negatively, creating a uniform electrostatic field.

The charged particles are attracted to and collect on the plates that have the opposite electrical charge. The air leaving the air cleaner has fewer particles. Each time the air circulates through the, more particles are removed.

CHECKOUT

Inspect the Installation

Make sure:

• Turning vanes and transitions, as needed, are properly installed.

• Sheet metal joints between air cleaner and furnace are sealed.

• All sheet metal connections are complete.

• Original furnace filter has been removed and the blower compartment cleaned.

• If atomizing humidifier is installed upstream from the air cleaner, a disposable furnace filter is installed between the humidifier and the air cleaner.

• Outside air, if used, is mixed with return air or heated, as necessary, before it can reach the air cleaner.

• Airflow arrows on the electronic cell point downstream.

• Prefilter is on the upstream side of the cell.

• Cell handle faces outward.

• Electronic cell and prefilter are clean and dry.

Check Air Cleaner Operation

With all components in place, turn on the air cleaner switch and energize the system blower. Check the following points of operation:

1. The neon light next to the on-off switch is on.

2. Turn off the system blower. The neon light should go off after a few seconds. The neon light shows that the air cleaner is energized and the high voltage power supply is working correctly.

3. Turn on the system blower. With the air cleaner energized, push the test button. A snapping sound indicates that the collector voltage is present on the cell.

4. With a multispeed blower, repeat steps 1 through 3 for each fan speed.

5. If operation is not as described, refer to the Troubleshooting section.

SERVICE

CAUTION

Sharp Edges.

Can cause personal injury.

Carefully handle the cell(s) or wear protective gloves to avoid cuts from the sharp metal edges.

Cleaning the Cell(s) and Prefilter(s)

To assure optimum performance from the air cleaner, the cell(s) and prefilter(s) must be cleaned regularly-every one to six months. Washing frequency will vary depending on the number of family members, pets, activities (such as cooking or woodworking) and smoking habits. Use the wash reminder

68-0271 10

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

schedule provided with the air cleaner to help establish and maintain a regular cleaning schedule. Mount the wash reminder schedule in a convenient location.

NOTE: To let the heating or air conditioning system operate normally while the cell(s) are being washed, simply turn off the air cleaner switch.

Vacuum the prefilter or brush, or soak it in a tub. Do not wash the prefilter in the dishwasher or car wash.

Automatic Dishwasher

4. Inspect the dishwasher. Rerun the wash and/or rinse cycle with the dishwasher empty if there is dirt or residue from washing the cell(s). If dirt or residue seems excessive, wash the cell(s) more often or try a different detergent.

Washing Cell(s) in a Container

CAUTION

Burn Hazard.

Can cause personal injury.

Allow cell(s) to cool completely in dishwasher at end of wash cycle or wear protective gloves to avoid burns.

Hot water can accumulate in the tubes supporting collector plates; tip cell(s) so tubes drain.

IMPORTANT

• Check the dishwasher owner's manual. Some manufacturers do not recommend washing electronic cell(s) in their dishwashers.

• If the dishwasher has upper and lower arms, position the cell(s) carefully to allow good water circulation.

• Be careful to avoid damaging the cell(s) when placing them in the dishwasher. Broken ionizer wires or bent collector plates are not included in the warranty.

• Very dirty cell(s), especially from tobacco or cooking smoke, can discolor the plastic parts and the lining of some dishwashers. This discoloration is not harmful. To minimize it, wash the cell(s) more frequently or try a different brand of detergent.

• Do not allow the dishwasher to run through the dry

cycle. This will bake on any contaminants not removed during the wash cycle and reduce air cleaner efficiency.

CAUTION

Hazardous Chemical.

Can cause personal injury.

Do not splash detergent solution in eyes. Wear rubber gloves to avoid prolonged detergent contact with skin.

Keep detergent and solution out of reach of children.

NOTE: Always wash the cell(s) first, then the prefilter(s), to keep heavy prefilter lint from getting caught in the cell(s).

1. Use a large enough container, such as a laundry tub or trash container, to hold one or both cell(s).

NOTE: Sharp corners on the cell(s) can scratch the surface of a bathtub.

2. Dissolve about 3/4 cup of automatic dishwasher detergent per cell in enough hot water to cover the cell(s). If the detergent does not dissolve readily, or forms a scum on the water, try another brand, or use softened water

3. After the detergent has completely dissolved, place the cell(s) in the container and let soak for 15 to 20 minutes.

Agitate up and down a few times, and remove. See Fig.

13.

1. Put the cell(s) on the lower rack of the dishwasher with the airflow arrow pointing up. It may be necessary to remove the upper rack. Do not block water flow to the upper arm.

HINT: Lay a few large water glasses between the spikes on the lower rack and rest the cell(s) on them so the spikes do not damage the aluminum collector blades.

2. Using regular dishwasher detergent, allow the dishwasher to run through the complete wash and rinse cycle. Do not use the dry cycle. To avoid burns, let the cell(s) cool completely before removing, or wear protective gloves when removing the cell(s). Remember that water may be trapped inside the cell(s). Tip the cell(s) so the tubes can drain.

3. Wipe the ionizer wires and contact board on the end of the cell using thumb and forefinger with a small, damp cloth.

WEAR GLOVES

TO PROTECT

HANDS FROM

DETERGENT

SOLUTION.

Fig. 13. Washing cell(s) in container.

M922A

11 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

4. Next, wash the prefilter(s) the same way. Empty and rinse the wash container.

5. Rinse the cell(s) and prefilter(s) with a hard spray of very hot water; rinse the tub clean, then fill the tub with clean hot water and soak for 5 to 15 minutes. Rinse until the water draining from the cell(s) and prefilter(s) no longer feels slippery.

6. Soak cell(s) and prefilter(s) in a final clear water rinse for ten minutes.

7. Wipe the ionizer wires and contact board on the end of the cell using your thumb and forefinger with a small, damp cloth.

Washing Cell(s) at the Car Wash

Use the hand sprayer at a coin-operated do-it-yourself car wash to clean the cell(s). Hold the nozzle at least two feet away from the unit to avoid damage (such as broken ionizer wires or bent collector plates) from the high pressure stream of water. See Fig. 14. Follow the same sequence of wash and rinse as recommended for cars. However, do not wax the cell(s). Be sure to rinse until the water draining from the cell(s) no longer feels slippery.

Replacing Ionizer Wires

Broken or bent ionizer wires can cause an electrical short to ground, often resulting in visible arcing or sparking. Do not use cell(s) until broken wires are removed. Cells can be used temporarily with one wire missing, but replace the wire as soon as possible.

Replacement wires are supplied cut to length with eyelets on both ends for easy installation. See Parts and Accessories

Not Illustrated section To install:

1. Hook the eyelet on one end of the wire over the spring connector on one end of the cell. See Fig. 15. Be careful to avoid damaging the spring connector or other parts of the cell.

2. Hold the opposite eyelet with a needle nose pliers and stretch the wire the length of the cell. Depress the opposite spring connector and hook the eyelet over it.

3. Check the cell for short circuits using an ohmmeter.

Check the resistance between the frame of the cell and both the ionizer and the collector contacts. In each case, the resistance should be infinite. See Fig. 16.

REPLACING AN IONIZER WIRE.

HIGH VELOCITY

DETERGENT SPRAY

STEAM

PRESS

DOWN

SPRING

CONNECTORS

M20831

Fig. 14. Washing cell(s) at car wash.

Reinstall the Cell(s) and Prefilter(s)

1. Inspect the cell(s) for broken ionizer wires and bent collector plates. Repair as necessary or take to a Honeywell Authorized Air Cleaner Repair Station.

2. Slide the prefilter(s) into the upstream prefilter guides.

3. Slide in the air cleaner cell(s) so the airflow arrow points downstream and the handle(s) faces outward.

4. Firmly close the access door.

5. Turn on the air cleaner. If the cell(s) and prefilter(s) are wet, the neon light may not come on and you may hear arcing. If the arcing is annoying, simply turn off the air cleaner for two to three hours or until the cell(s) is dry.

68-0271 12

EYELETS

1

IONIZER

WIRE

IONIZER

WIRE

NEEDLENOSE

PLIERS

1 TWO EYELETS HOLD IONIZER WIRE TO CELL.

M1540B

Fig. 15. Replacing an ionizer wire.

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

Modification to Reduce Ozone Odor

CAUTION

Electric Shock Hazard.

Can cause pesonal injury.

Always disconnect power and open access door before opening power supply cover.

COLLECTOR

TERMINAL

IONIZER

TERMINAL

COLLECTOR

TERMINAL

M6155

Fig. 16. Use ohmmeter to check electronic cells for short circuits.

The electronic air cleaner generates a small amount of ozone in normal operation. During the first week or two of operation, the amount may be higher because of sharp edges on some of the new high voltage metal parts. Normal use quickly dulls these edges.

The average person can detect the odor of ozone in concentrations as low as 0.003 to 0.010 parts per million

(ppm). The electronic air cleaner contributes 0.005 to 0.010 ppm of ozone to the indoor air. The U.S. Food and Drug

Administration and Health and Welfare Canada recommend that indoor ozone concentration should not exceed 0.050 ppm. As a comparison, the outdoor ozone level in major cities is sometimes as high 0.100 ppm.

However, if desired, the ozone generated by the air cleaner can be reduced in one of two ways:

1. Install an activated carbon filter downstream from the air cleaner. Make sure particles from the air filter cannot fall into the air cleaner.

WARNING

Electric Shock Hazard.

Can cause personal injury.

Only a trained service technician should perform the following procedure.

2. This will reduce ozone production about 20 to 25 percent and reduce efficiency about seven to ten percent, depending on actual airflow delivered by the furnace blower.

a. Unplug or disconnect power supply to the air cleaner.

b. Open the access door.

c. Remove the power box cover. See Fig.17.

d. Locate J5 shorting bar on the power supply. See

Fig. 18. Remove the shorting bar and reinstall on only one pin.

NOTE: The ozone will be reduced, but the shorting bar is available for reinstallation if needed.

e. Replace the power supply cover and access the door. Turn on the power.

f. Repeat the checkout procedure before leaving the job.

13 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

REMOVE POWER BOX FROM AIR CLEANER AND REMOVE THE COVER.

2

3

1

4

Fig. 17. Remove power box from air cleaner and remove cover.

P3

J5 SHUNT

IN OZONE

REDUCTION

POSITION

P4

J4

E5 E6

M20807

68-0271

J5 IN

NORMAL

POSITION

E4 E3

E2

J3

E1

P2

P1

M15099

Fig. 18. Move J5 shorting bar to reduce ozone production about 20 to 25 percent.

14

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

REPLACEMENT PARTS (TABLE 3)/EXPLODED VIEW (FIG.19)

5

6

7

3

4

1

2

15

16

17

18

11

12

13

14

19

20

8

9

10

No.

Table 3. Replacement Parts.

Power Box Assembly (includes no. 8-19),

120V, 60 Hz

240V, 60 Hz

Switch

Power Box Cover and Label

Nominal Return Air Opening

16 x 25 in. (405 x 635 mm)

203306AB (1)

137980A (1)

FC37A1130 (2)

137266 (2)

203371 (2)

136518 (1)

208417B (1)

N/A

203321 (1)

203318A (1)

208414B (1) Power Supply,

120V, 60 Hz

240V, 60 Hz

Description

Access Door includes no. 2

Test Button Assembly

Electronic Cell

Cell Handle

Prefilter

Cell Key

Interlock Bracket and Switch

Terminal Board Assembly Front

Terminal Board Assembly Rear

Barrier Plate

Strain Relief

Line Cord

Hole Plug

Neon Assembly

Airflow Switch

FC37A Bag Assembly for cell repair.

Contains 2 Connector Clips, 1 Terminal

Board and Instructions.

N/A

4074ETG (1)

203329B (1)

203329A (1)

203331 (1)

203852 (1)

4074ETD (1)

203847 (1)

4074EYS (1)

4074ETH (1)

4074EHG

(#) = Quantity required per unit.

N/A = Not available as merchandized part.

20 x 25 in. (508 x 635 mm)

203305AB (1)

137980A (1)

FC37A1064 (2)

137266 (2)

203372 (2)

136518 (1)

208417A (1)

N/A

203321 (1)

203318A (1)

20841A (1)

N/A

4074ETG (1)

203329B (1)

203329A (1)

203331 (1)

203852 (1)

4074ETD (1)

203847 (1)

4074EYS (1)

4074ETH (1)

4074EHG

15 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

9

19

12

18

8

7

11

16

14

15

17

10

13

20

68-0271

6

5

4

3

2

1

Fig. 19. Components of the Electronic Air Cleaner (2-cell model shown).

16

M20816

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

PARTS AND ACCESSORIES NOT ILLUSTRATED (TABLE 4)

Table 4. Parts and Accessories Not Illustrated.

Tools and Equipment

Troubleshooting the electronic air cleaner requires:

• Needle nose pliers for stringing ionizer wires and inserting edge connectors.

• Test meter.

Description

Air Cleaner Cabinet

Gasket Kit

Ionizer Wires

(Multiples of 5)

Nominal Return Air Opening

16 x 25 in.

(406 x 635 mm)

20 x 25 in.

(508 x 635 mm)

32002109-001

136434BA

32002109-001

136434AA

Mounting Screws

2-Stage EAC Cell with Collector Clip

136375 (6)

240V Conversion Kit 203365A

136375 (6)

FC37A1247 (2) FC37A1239 (2)

203365A

Neon Light (On Power Box)

The neon light is powered through the power supply and is on when the power supply output voltage is normal.

Test Button

When pushed, the test button shorts from collector voltage to ground. The resulting arcing sound indicates that high voltage is being supplied to the collector. The solid state power supply controls current flow to the collector.

Power Box

ELECTRICAL TROUBLESHOOTING

WARNING

Electric Shock Hazard.

Can cause personal injury or equipment damage.

The following procedures expose hazardous live parts.

Disconnect from power between checks and proceed carefully. These instructions are for use only by qualified personnel.

WARNING

Electric Shock Hazard.

Can cause personal injury.

Always turn off power and remove access door before removing power supply or its cover.

The solid state power supply within the power supply box can be replaced. When troubleshooting indicates a power supply problem, replace the entire power box or replace the power supply within the box. See Installation Instructions, form 69-

1136. See Fig. 17 for power box removal.

Troubleshooting Procedure

The electronic air cleaner Troubleshooting charts show how to quickly isolate a problem in the air cleaner. Although a meter is needed for some steps, the primary diagnostic tools are the neon light and the test button.

17 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

68-0271 18

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

19 68-0271

F50F DUCT MOUNTED ELECTRONIC AIR CLEANER

Automation and Control Solutions

Honeywell Honeywell Limited-Honeywell Limitée

1985 Douglas Drive North

Golden Valley, MN 55422

35 Dynamic Drive

Scarborough, Ontario

M1V 4Z9

68-0271 G.H. 10-02

Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.

www.honeywell.com/yourhome