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VA7800 Series Electric Valve Actuators Product Bulletin 1

Refer to the QuickLIT website for the most up-to-date version of this document.

The VA7800 Series of Electric Valve Actuators control

VG7000 Series Bronze Globe Valves in Heating,

Ventilating, and Air Conditioning (HVAC) systems. The

VA7800 Series produce a minimum linear output force

of 180 lb (800 N) and are ordered field mounted or

factory coupled to 1/2 through 2 in. VG7000 Series

Bronze Globe Valves. All actuators are direct mount

and available in both Spring Return and Non-Spring

Return models.

Spring Return models ship from the factory set for

DC 0 to 10 V Proportional Control. With a change of

DIP switch settings, this model can be field configured

to On/Off or Floating Control. In addition to these

settings, optional auxiliary switches are also available.

Non-Spring Return models are available in AC 24 V

On/Off (Floating) Control, or DC 0 to 10 V Proportional

Control. Models are available with or without optional

auxiliary switches.

Figure 1: VA7800 Actuator on VG7000 Series

Bronze Globe Valve

Table 1: Features and Benefits

Features Benefits

Automatic Stroke Adjustment Provides easy, quick, and precise commissioning.

Manual Override as Standard Allows manual positioning of valve for easy commissioning and servicing.

IP54 Enclosure Protection Allows installation in a wide range of environments.

Unique Swing-Gate Yoke Offers fast and secure attachment to the valve.

Brushless Motor Ensures low energy consumption and long life.

Proportional Model Enables one model to be used for various control types.

Force-Controlled Motor Shut-Off Reduces energy consumption, wear of the actuator, and protects the valve from

excessive forces.

Stroke Position Indicator Gives visual indication of valve operation, provides automatic adjustment of

stroke indicators during first cycle of operation.

Status Light-Emitting Diode (LED) Gives visual indication of actuator status and assists with diagnostic.

Optional Integrated Auxiliary Switches Provides adjustable switch points with line voltage capability.

Integral Cable with Colored Conductors Simplifies installation and field wiring.

Integral Connector for 3/8 in. (10 mm)

Flexible Metal Conduit (FMC)

Simplifies installation and field wiring.

Underwriters Laboratories Inc.® (UL)

and CE Compliant

Provides internationally recognized regulatory agency approval.

VA7800 Series Electric Valve Actuators

Product Bulletin

VA7800 Series

Code No. LIT-12011474

Issued May 3, 2013

Supersedes January 30, 2009

Summary of content (10 pages)

PAGE 1
VA7800 Series Electric Valve Actuators Product Bulletin Code No. LIT-12011474 VA7800 Series Issued May 3, 2013 Supersedes January 30, 2009 Refer to the QuickLIT website for the most up-to-date version of this document. The VA7800 Series of Electric Valve Actuators control VG7000 Series Bronze Globe Valves in Heating, Ventilating, and Air Conditioning (HVAC) systems.
PAGE 2
Application Overview IMPORTANT: The VA7800 Series Electric Valve Actuators are intended to control saturated steam, hot water, and chilled water flow under normal equipment operating conditions. Where failure or malfunction of the VA7800 Series Valve Actuator could lead to personal injury or property damage to the controlled equipment or other property, additional precautions must be designed into the control system.
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For On/Off Control, apply power continuously to Terminal 1 (Common) and Terminal 2 (Power). From this action, the actuator assumes its fully extended stem position. To fully retract the stem, apply power through the controlling device to Terminal 3. When power is removed from Terminal 3, the actuator returns to its fully extended position. In the event of power loss, the actuator remains in its last position. To enable Floating Control, wire Terminal 1 to the common.
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All VA78x0-HGx-2 Series Actuators feature a multicolored LED that provides operational status and failure analysis information. See Table 4 for a detailed description of LED color indicators.
PAGE 5
Figure 3: VA78x0-HGx-2 Wiring Diagram Mounting • When mounting the actuator on a valve, the following precautions are recommended: Never cover the actuator with insulating material. • Allow sufficient clearance to remove the actuator. • Mount the valve in an upright angle or at an angle less than 90° from the vertical for fluid temperatures up to 212°F (100°C). • Orient the actuator so that the yoke supports are one above the other when mounting the valve horizontally.
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Ordering Information Contact the nearest Johnson Controls representative and specify the desired product code number from Table 5.
PAGE 7
Dimensions 4.56 (116) 9.6 (244) 8.35 (212) 5.9 (150) Minimum Figure 5: Dimensions, in.
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Technical Specifications Table 6: VA7810-AGx-2 and VA7810-ADx-2 Series On/Off (Floating) Electric Non-Spring Return Valve Actuators Model VA7810-AGx-2 Thrust Force 180 lb (800 N) minimum Power Supply AC 24 V (AC 19 to 30 V) at 50/60 Hz, Class 2 AC 230 V (AC 195 to 265 V) at 50/60 Hz Transformer Sizing 3 VA 8 VA Input Signal AC 24 V (AC 19 to 30 V) at 50/60 Hz AC 230 V (AC 195 to 265 V) at 50/60 Hz Feedback N/A N/A Auxiliary Switch Rating Two Single-Pole, Double-Throw (SPDT), AC 230 V, 3.
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Table 7: VA7810-HGx-2 Series Proportional Electric Non-Spring Return Valve Actuators Model VA7810-HGx-2 Thrust Force 180 lb (800 N) minimum Power Supply AC 24 V (AC 19 to 30 V) at 50/60 Hz, Class 2 Transformer Sizing 6 VA Input Signal Switch Selectable: Proportional: DC 0 to 10 V, DC 2 to 10 V, 0 to 20 mA or 4 to 20 mA Programmable Proportional: Start Point: 0 to 6 VDC (0 to 12 mA) End Point: 3 to 10 VDC (6 to 20 mA) with 3 VDC (6 mA) minimum span On/Off (Floating): AC 24 V at 50/60 Hz Switch Selec
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Table 8: VA7820-HGx-2 / VA7830-HGx-2 Series Proportional Electric Spring Return Valve Actuators Model VA7820-HGx-2 / VA7830-HGx-2 Thrust Force 180 lb (800 N) minimum Power Supply AC 24 V (AC 19 to 30 V) at 50/60 Hz, Class 2 Transformer Sizing 11 VA Input Signal Switch Selectable: Proportional: DC 0 to 10 V, DC 2 to 10 V, 0 to 20 mA or 4 to 20 mA Programmable Proportional: Start Point: 0 to 6 VDC (0 to 12 mA) End Point: 3 to 10 VDC (6 to 20 mA) with a 3 VDC (6 mA) minimum span On/Off (Floating): AC