Product Description
. . . . . Johnson Controls AP-VMA-1420-0 Metasys Variable Air Volume Modular Assembly - The Variable Air Volume Modular Assembly (VMA) 1400 Series is a configurable, integrated module that includes a Variable Air Volume (VAV) controller, differential pressure sensor, and, with the exception of the VMA1430, an actuator. Note: This document focuses on the VMA1410, 1420, and 1430 controllers. The VMA1400 Series also includes the VMA1440, which is used exclusively as part of the Metasys® Zoning Package. See the Metasys Zoning Package Product Bulletin (LIT-639050) and the Metasys Zoning Package Overview Technical Bulletin (LIT-639100) for information on this specialized product. The VMA engineering procedures vary from location to location. The information provided here is a general engineering guideline. Where available, use the Advanced Installation Management (AIM) tools for developing schedules and drawings. The VMA is a configurable, integrated module that includes a VAV controller and differential pressure sensor. The VMA1400 Series includes three models: VMA1410 (cooling only, includes actuator) VMA1420 (cooling with reheat, includes actuator) VMA1430 (controller and differential pressure sensor only for use with an external incremental or proportional actuator) Note: The VMA1400 Series also includes the VMA1440, which is used exclusively as part of the Metasys Zoning Package. See the Metasys Zoning Package Product Bulletin (LIT-639050) and the Metasys Zoning Package Overview Technical Bulletin (LIT-639100) for information on this specialized product.The models are designed for pressure independent, single duct (all VMA1400 Series models), and dual duct (VMA1420 and 1430 only) applications. The VMA1420 and 1430 models can be used with parallel or series fan-powered boxes. Note: The VMA1420 can be configured for the Metasys Zoning Package application, but the internal pressure sensor can only be used for monitoring purposes. Refer to the Metasys Zoning Package Commissioning Technical Bulletin (LIT-639250).. Johnson Controls. Johnson Controls. AP-VMA1420-0.