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.
2
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
[phone] (Eastern US)
[phone] (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.
7
8
1 [48]
5
[133]
1
4
4
[121]
3
4
5
8[16]
7
16[11]
M5491
1/8 INCH
MALE THREAD
9080706050
40
3020100
0
50
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
!

4
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.

6

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