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VA(M)S-27 Series
Table of Contents
VA(M)S-27 Series - Installation, Operation and Maintenance Manual
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 3
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation/Mounting Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PLEASE VISIT OUR WEBSITE -
- 27 lb-in (3 Nm) Electric Actuator
IOM Manual
FOR MORE INFORMATION ON THIS PRODUCT
AND OTHER BRAY PRODUCTS
www.braycommercialdivision.com
1
Bray Commercial Division
13788 West Road, Suite 200A
Houston, Texas 77041
BCDSales@Bray.com
Phone: 1-888-412-2729
www.braycommercialdivision.com
© 2022 Bray International, Inc.
11/25/24
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Table of Contents
Related Manuals for Bray VASU20-27
Summarization of Contents
Technical Specifications
Actuator Model Variations
Details on different actuator models like VAS24-27-(A), VAS24-27-T-(A), VAMS24-27-(A), and VASU20-27-(A).
Electrical and Operational Parameters
Covers operating voltage, power consumption, input signals, and control impedance for various models.
Performance and Environmental Ratings
Includes runtime, cycle life, enclosure type, ambient conditions, and noise ratings.
Certifications and Warranty Information
Details agency certifications like UL, CE, C-Tick and the product's warranty period.
Applications and Important Considerations
Product Application Overview
Describes the use of VA(M)S-27 series actuators in HVAC applications and their bidirectional nature.
Safety and Environmental Precautions
Highlights critical warnings regarding system design, corrosive environments, and plenum applications.
Installation Procedures
Mounting Actuator to Valve
Step-by-step guide for mounting the actuator to the ball valve, including spring return port configurations.
Mounting the -HT Thermal Barrier
Instructions for installing the optional -HT thermal barrier to protect the actuator from high fluid temperatures.
Electrical Conduit Connections
Guidance on using threaded electrician's fittings and flexible metal conduit for wiring connections.
Setup and Adjustments
Switch Trip Point Adjustment
Procedure for adjusting the auxiliary switch trip point for specific rotation ranges and connecting to a power source.
Product Dimensions
Dimensional Drawings and Measurements
Provides detailed diagrams with measurements in inches and millimeters for actuator dimensions.
Wiring Diagrams
Auxiliary Switch Wiring
Schematics for the auxiliary switch wiring on -A models, showing COM, NC, and NO terminals.
Model-Specific Wiring Configurations
Wiring diagrams for On/Off, Floating, and Modulating control for various VA(M)S-27 series models.
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