Product Overview

ManualsBrandsJohnson Controls ManualsDampersVA-8122 Proportional Valve Actuator (22 lb-in)

Controls Group 507 E. Michigan Street

P.O. Box 423, Milwaukee, WI 53202

Code No. LIT-1900048

The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson

Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

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seQ# = 108

VA-8122

Proportional Valve Actuator

va8122.tif

VA-8122-1 Valve Actuator

Description

The VA-8122 Proportional Valve Actuator is

an electric actuator that provides proportional

control of valves with up to a 5/16 in. stroke in

Heating, Ventilating, and Air Conditioning

(HVAC) applications. This compact, non-

spring return actuator has a 22 lb minimum

seating force in a compact, easy-to-install

package.

The VA-8122 can be ordered factory coupled

to the 1/2 in. or 3/4 in. VG7000 Series bronze

valves for hot or cold water service only. The

VA-8122 can be used for retrofits of VT Series

Terminal Unit Valves (with slotted stems) and

VB-5x39 Series Flare Valves. Refer to the

appropriate valve literature for more

information.

Features

• AUTOCAL pushbutton allows the actuator

to define the control input range

proportionally over the stroke

• simplified setup and adjust procedures

decrease installation costs

• selectable direction of action, Drive Down

or Drive Up, provides application flexibility

• wide range of control inputs meets the

needs of most applications

• power failure detection and low voltage

indication prevent data corruption of the

actuator's memory and warns of insufficient

supply voltage

• Light-Emitting Diode (LED) reduces

commissioning time and displays operating

status

Applications

The actuator uses a reversible synchronous

motor to accurately position the valve. The

motor can reliably generate 22 pounds of

force in either the Drive Down or Drive Up

direction. Once the valve closes, a shutoff

force builds up. When this force reaches 22

pounds, a lever within the actuator operates a

force sensor that stops the motor. The

constant load at the end of travel ensures tight

valve seat shutoff and compensates for seat

wear.

Field calibration of shutoff is not required. The

actuator maintains the shutoff force and its

last position even if power is removed.

Note: The valve stem can be positioned

manually by turning the manual

adjustment knob. Rotating the

knob counterclockwise moves the

valve stem up.

Repair Parts

Field repairs must not be made.

To Order

To order a proportional valve actuator, contact

the nearest Johnson Controls representative

and specify product code number

VA-8122-1

Refer to the

Accessories

chart for accessories

available.

Accessories

Code Number Description

VA-8020-100

Mounting kit for VT Series

valves

VA-8020-601 Replacement cover only

VA-8020-605

(a)

(a) One kit is included with the actuator. If ordered

separately, it must be ordered in multiples of

five.

Stem retainer and clip kit

M9000-105

Pluggable 3-position terminal

block

Specifications

VA-8122 Proportional Valve Actuator

Power Requirements 24 VAC at 50/60 Hz, 5.0 VA supply minimum, Class 2

Input Signal

Jumper Selectable: 0 (2) to 10 VDC, 0 (4) to 20 VDC,

6 (12) to 9 (18) VDC,0 (4) to 20 mA

Factory Setting: 0 to 10 VDC,

Drive Down (DD) action on signal increase

Input Impedance

Voltage Input: 0 to 10 VDC, 150,000 ohms and

0 to 20 VDC, 450,000 ohms

Current Input: 0 to 20 mA, 500 ohms

5/16 in. Stroke Time

50 Hz: Approximately 108 seconds nominal

60 Hz: Approximately 90 seconds nominal

Force Shutoff and Breakaway: 22 lb (98 N) minimum

Cycles 60,000 full cycles; 1,500,000 repositions

Enclosure NEMA 1, IP20

Audible Noise Rating 35 dBA maximum at 3.28 ft (1 m)

Ambient Operating Conditions

35 to 135°F (2 to 57°C); 85°F (30°C)

Maximum dew point at 90% RH, non-condensing

Ambient Storage Conditions

-40 to 150°F (-40 to 65°C); 85°F (30°C)

Maximum dew point at 90% RH, non-condensing

Valve Media Temperature

Water: 195°F (90°C) maximum

Steam: Actuator is not rated for this application.

Dimensions (H x W x D) 4.5 x 5.0 x 2.5 in. (114 x 127 x 64 mm)

Shipping Weight 1.6 lb (0.74 kg)

Agency Compliance

UL 873 Recognized, File E27734, Guide XAPX2

CSA C22.2 No. 139 Certified, File LR85083, Class 3221 02

CE Directive 89/336/EEC