Honeywell EA122A User manual

G. R. • 2-93 • © Honeywell Inc. 1993 • Form Number 62-3038

■Includes built-in brass shutoff valve for servicing

without system shutdown.

■Contains removable float/valve assembly for easy

servicing.

■Includes safety drain connection and vent cap with

leakage guard.

■Internal parts made of corrosion-resistant and

chemical-resistant materials for use with water

systems containing glycol, mineral oils, or petro-

leum-based oils.

■For use with water systems up to 230°F [110°C].

■Not suitable for steam systems.

■Uses 1/8 in. NPT male pipe thread.

■Maintains quiet and efficient operation.

CONTENTS

Specifications ................................................ 2

Ordering Information .................................... 2

Installation .................................................... 3

Operation ...................................................... 4

Service ........................................................... 4

Troubleshooting ............................................ 5

EA122A

Automatic Air Vent

The Honeywell Braukmann EA122A

Automatic Air Vent purges air from high

pressure mains and equipment in hot or cold

closed water systems.

MODEL: EA122A1002 Automatic Air Vent.

MATERIALS OF CONSTRUCTION:

Body: Engineered thermoplastic with brass base.

Float, Valve Lever and Cover: Engineered

thermoplastics.

Seal Disc and Rings: Synthetic rubbers.

Specifications

EA122A

SPECIFICATIONS • ORDERING INFORMATION

Ordering Information

When purchasing replacement and modernization products, specify the complete model number.

1. If you have additional questions, need further informa-

tion, or want to comment on our products or services, call:

1-800-345-6770, ext. 7188.

Or write:

Honeywell Customer Assistance Center

Honeywell Plaza, MN27-2164, P.O. Box 524

Minneapolis, Minnesota 55440-0524

2. To place an order, contact:

Honeywell Braukmann Customer Service

1985 Douglas Drive North

Minneapolis, Minnesota 55422-3992

(612) 542-7106 (Eastern US)

(612) 542-7103 (Western US)

3. Or fax your order to 1-800-356-0149.

AIR VENT:

Description Model Number

Automatic Air Vent with leakage EA122A1002

guard and Skega seal.

ACCESSORIES:

Description Part Number

Cover Assembly—includes cover, float P122B1002

assembly, and vent cap.

Safe Waste Connector. Connects top vent Q122A1001

to 1/4 in. O.D. tube.

Vent cap. Red. Includes leakage guard. 204992

OPERATING RATINGS:

Maximum Pressure: 90 psi.

Maximum Temperature: 230°F [110°C].

SAFETY RATINGS:

Maximum Pressure: 150 psi.

Maximum Temperature: 250°F [120°C].

CONNECTIONS: 1/8 in. NPT male pipe thread.

DIMENSIONS: Refer to Fig. 1.

CAPACITIES: Refer to Fig. 2.

Fig. 1—EA122A dimensions in in. [mm].

NOTE: Capacity indicated is for device with leakage guard

cap correctly installed and operational. Additional capac-

ity may be obtained by removing the leakage guard cap

and installing a connection between the vent discharge

and drain using Q122A1001 Safe Waste Connector.

1 [48]

[133]

[121]

8[16]

16[11]

M5491

1/8 INCH

MALE THREAD

9080706050

3020100

100

150

200

M5495

PRESSURE (PSI)

CUBIC FEET/HOUR

Fig. 2—EA122A flow capacities, with leakage

guard cap.

EA122A

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.

CAUTION

Do not use tools to adjust the EA122 or dam-

age to the vent may result. Use hands only to

adjust vent. A wrench may be used only on hex

during installation.

LOCATION

Install the EA122A on the positive side of the circulator

pump at the point where air will accumulate. This is usually

the high point of the supply or the return main in the system

as shown in Fig. 3.

Fig. 3—Install EA122A at high point in system.

INSTALLATION

1. Fit EA122A vent in piping at a location as specified

in the Location section.

2. Turn EA122A until vent fits tightly on piping. Use a

wrench to securely tighten hex.

3. If safety drain connection is desired, install a pipe

between vent discharge and drain using Q122A1001 Safe

Waste Connector.

4. Make sure that the red vent cap is securely tightened,

and that the valve is in the closed position by turning vent

body clockwise. See Fig. 4. Use hands only to avoid

damaging the vent.

5. With the valve in the closed position, flush the system

as required to remove dirt, debris and contaminants.

6. Fill the system with the appropriate solution.

7. Operate the EA122A by turning the air vent body

counterclockwise to the open position. Use hands only, see

Fig. 4.

8. Make sure the red vent cap is tightened all the way

to the stop position for proper leakage guard operation.

Use hands only to tighten.

Fig. 4—Turn vent body counterclockwise to

open or clockwise to close.

3 62-3038

Installation

M5492

SAFETY CONNECTION FOR PIPING

BETWEEN VALVE DISCHARGE AND DRAIN

EA122A AIR VENT

USE WRENCH TO

TIGHTEN HEX SECURELY.

INSTALL EA122A AT HIGH POINT IN SYSTEM.

M5494

CLOSED

OPENED

EA122A

OPERATION • SERVICE

Operation

Service

The EA122A operates as follows:

Opening the air vent (turning valve body counterclock-

wise) exposes the EA122A to the system. Water and air may

enter the vent chamber. The float will fall through any air in

the chamber. This opens the vent seat.

Theredventcapallowsairtopassthroughtheopenvent.

Astheairisreleasedthroughtheventcap,waterreplacesthe

air in the vent chamber and the float rises. This closes the

vent seat. When additional air enters the vent chamber, the

operation repeats.

If the vent seat remains open, water will rise through the

vent and cause the swelling disks inside the red cap to close

off the vent. Closing the air vent (turning valve body clock-

wise) isolates the EA122A from the system, allowing

service.

CAUTION

TheEA122Amay behotduetosystemtemperature

extremes. Use caution when adjusting vent to pre-

vent burning hands.

Dirt may collect in the seat area of the air vent float

assembly, causing the vent to malfunction. Clean the vent

periodically to prevent this problem.

NOTE: The EA122A may be serviced without depressuriz-

ing or draining the system.

To clean the seat area, proceed as follows:

1. Turn the vent body clockwise to the closed position,

isolating the vent from the system. See Fig. 4.

2. Remove the float assembly by unscrewing the outer

ring at the top of the body and lifting up the black cover

assembly. See Fig. 5.

3. Carefully clean any dirt or debris from the seat area.

9. Make sure the red vent cap is tightened all the way

to the stop position for proper leakage guard operation.

Use hands only to tighten.

Fig. 5—EA122A construction.

CAUTION

Do not bend spring on float assembly or damage to

the vent may result.

4. Carefully clean any dirt or debris from inside the

vent chamber.

5. Replace the float assembly, making sure that the O

ring is seated properly (see Fig. 5).

6. Replace black cover assembly on air vent body.

7. Using hands only, replace outer ring, turning until

handtight.

8. Operate the EA122A by turning the air vent body

counter- clockwise to the open position. Use hands only. See

Fig. 4.

M5493

CONSTRUCTED

FOR EASY, IN-LINE

SERVICE.

SHUTOFF IS

BUILT-IN.

NO DRAIN-DOWN

REQUIRED.

JUST TWIST AND YOU'RE READY

TO SERVICE! TWIST AGAIN AND

YOU'RE BACK ON LINE.

RED VENT CAP

WITH LEAKAGE GUARD

VENT LEVER

SPRING

BLACK COVER

ASSEMBLY

O-RING

SEAT AREA—

MAKE SURE

AREA IS FREE OF

DIRT AND DEBRIS.

FLOAT

Troubleshooting

EA122A

TROUBLESHOOTING

Problem Action

The EA122A is not venting air or 1. Check the red vent cap; make sure the vent passage is open (disks are

there is too much air in the system. not swelled).

2. Check that the valve is in the open position.

3. Make sure that the float is attached to the vent lever as shown in Fig. 5.

Water is leaking from the EA122A. 1. Make sure the red vent cap is tightened all the way to the stop position.

2. Adjustthevalvetotheclosedpositionby turning the vent body clockwise.

3. Clean the vent as described in the Service section.

4. If internal parts appear damaged or deteriorated, replace cover assembly

(part no. P122B1002).

5 62-3038

CAUTION

TheEA122Amay behotduetosystemtemperature

extremes. Use caution when adjusting vent to pre-

vent burning hands.

7 62-3038

Printed in U.S.A.

Honeywell Braukmann Helping You Control Your World

Honeywell Inc.

1985 Douglas Drive North

Golden Valley, Minnesota 55422

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