Johnson Controls VA-9070 installation instructions Mounting, Wiring, Setup and Adjustments

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VA-9070 Series Electric Rotary Actuators for Two-Position and Modulating Service

Installation Instructions

Code No. LIT-977322

Issued May 29, 2007

Supersedes March 14, 2005

Mounting

When mounting the actuator in the standard position, orient the actuator with its handwheel in a vertical plane and parallel to the pipeline. When mounting the actuator on a vertical pipe, position the acutator with the conduit entries on the bottom to prevent condensation from entering the actuator by way of the conduit. In all cases, position the conduit to prevent drainage into the actuator.

Mount the actuator to the valve using the following procedure:

1.Manually operate the actuator until the output shaft of the actuator lines up with the valve stem. If possible, use an intermediate position (such as valve disc/stem and actuator half-open).

2.Place the proper sleeve adaptor (if required) onto the valve stem. Apply a small amount of grease to the sleeve adaptor to ease assembly.

3.Install the furnished mounting studs by threading them all the way into the actuator base. (Insert the short, threaded length into the actuator.)

4.Mount the actuator onto the valve stem. Be sure the mounting studs are properly aligned with the holes in the top plate of the valve or the mounting bracket. If necessary, manually override the actuator to align the mounting studs with the mounting holes.

5.Lower the actuator onto the valve, and secure it tightly in place with the furnished hex nuts and lock washers.

Wiring

Connect the actuator to field wiring:

The heaters use approximately 0.5 amperes at 110 volts.

Remove the metal conduit plug for the power connection. Each actuator has two conduit entries (one for power and one for control). The remaining square-head conduit plug is weatherproofed but may eventually degrade. If the square-head conduit plug degrades, replace it with a metal plug.

The motor full load current is noted on the nameplate of the actuator. The terminal strip accepts wire sizes ranging from 10 to 22 AWG (12 to 22 AWG for the servo). Do not use wire smaller than 18 AWG.

Terminate all field wiring at the actuator terminal strip in accordance with the wiring diagrams attached to the inside of the actuator cover.

Properly seal the conduit connections to maintain the weatherproofed integrity of the actuator enclosure.

Setup and Adjustments

You must set the electrical travel switches to trigger prior to reaching the mechanical travel stops. The travel switches are labeled for open and close. The cams are color-coded (green for open; red for closed).

Manual travel stops are designed to prevent manual overtravel, not to stall the electric motor. The travel stops have an adjustment range of approximately 10 degrees.

Closed Travel Switch and Travel Stop Adjustment

1.Loosen the mechanical stop for the closed position, and back it off so that it does not interfere with actuator travel. The closed stop is located on the right when viewed from the travel stop side of the actuator.

2.Remove the indicator rotor by pulling it up. This action exposes the machined groove on the end of the camshaft, which is the reference for the valve disc position.

3.Manually operate the actuator handwheel Clockwise (CW) until the valve reaches the desired closed position.

4.Rotate the red adjusting knob (by hand or with a flat-head screwdriver) until the cam lobe barely trips the switch from a CW direction.

Note: If the rotation of one cam moves the other cam, hold the other knobs or cams during adjustment.

VA-9070 Series Electric Rotary Actuators for Two-Position and Modulating

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Service Installation Instructions

 

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Contents Setup and Adjustments WiringClosed Travel Switch and Travel Stop Adjustment Issued May 29Repair Information Open Travel Switch and Travel Stop AdjustmentServo Commissioning

VA-9070 specifications

The Johnson Controls VA-9070 is a cutting-edge building automation system designed to enhance energy efficiency, comfort, and overall operational performance for both commercial and industrial facilities. As a key component of the company's comprehensive suite of building management solutions, the VA-9070 stands out due to its advanced features, reliable technologies, and impressive characteristics.

One of the primary features of the VA-9070 is its ability to deliver centralized control for various building systems, including HVAC, lighting, security, and energy management. This integration allows facility managers to monitor and control different subsystems from a unified platform, leading to streamlined operations and improved decision-making. The system's user-friendly interface simplifies the management process, enabling users to quickly access real-time data and make informed adjustments as needed.

The VA-9070 leverages advanced technologies, including Internet of Things (IoT) connectivity and cloud computing capabilities. This allows for remote access and control of building systems, providing flexibility that is essential for modern facility management. Users can track energy consumption patterns, detect anomalies, and identify opportunities for energy savings from anywhere, anytime, using mobile devices or web-based dashboards.

Another notable characteristic of the VA-9070 is its robust analytics engine, which interprets data collected from various building systems. This functionality helps users identify trends, optimize operational efficiency, and predict maintenance needs before issues arise. With predictive analytics, managers can create maintenance schedules that minimize downtime and extend the lifespan of critical equipment.

In addition to its focus on energy efficiency, the VA-9070 prioritizes user comfort and safety. The system can adjust heating, cooling, and lighting based on occupancy patterns and real-time environmental data. This ensures that spaces are not only energy-efficient but also conducive to occupant well-being.

Built to last, the VA-9070 is designed with durability in mind, featuring reliable hardware and software components that withstand the rigors of demanding environments. Its compatibility with a wide range of protocols and standards ensures seamless integration with existing systems, making it a versatile choice for facilities looking to upgrade their building automation capabilities.

In summary, the Johnson Controls VA-9070 is a powerful and flexible building automation system that combines centralized control, IoT connectivity, and intelligent analytics. Its focus on energy efficiency, occupant comfort, and operational reliability makes it an invaluable tool for facility managers aiming to optimize their building performance.