AP-VMA1420-0 Johnson Controls VMA

Johnson Controls AP-VMA1420-0 VAV Modular Assembly (VMA) – VMA 1400 Series Datasheet The AP-VMA1420-0 Johnson Controls Variable Air Volume Modular Assembly (VMA) configurable digital controller, pressure sensor, and/or actuator housed in one pre-assembled unit. Product Overview The AP-VMA1420-0 is a complete Variable Air Volume Modular Assembly (VMA) controller from Johnson Controls’ VMA 1400 Series. It integrates a VAV controller, actuator, and pressure sensor in a preassembled unit. This particular model supports cooling with reheat or fan-powered configurations. It’s designed for precision control in VAV systems in HVAC, offering reliable modulation, addressable communication, and flexible installation options. Specifications Specification Details Brand / Model Johnson Controls AP-VMA1420-0 Series VMA 1400 Series VAV Modular Assembly Supported Applications Cooling with reheat or fan-powered VAV boxes Supply Voltage 20-30 VAC, 50/60 Hz Maximum Power Consumption 10 VA (excluding relay and valve loads) Optional Fuse Current Rating 2.0 A for VMA1420 models Actuator Torque Minimum 4 N·m (≈ 35 lb-in) Ambient Operating Temperature Range 0 to 50 °C (32 to 122 °F) Ambient Storage Temperature –40 to 70 °C (–40 to 158 °F) Mounting & Terminations 6.3 mm (¼-inch) spade lugs for most terminations; communications ports use screw terminals Communication Protocols Supports N2 Bus and Zone Bus; addressable via DIP switches Housing & Safety Ratings Plastic housing; UL/94-5VB plenum flammability rating; indoor environment suitable Weight & Dimensions Approximate weight ~ 2.7 lbs; dimensions around 12 × 8 × 8 inches Features & Benefits Built-in pressure sensor and integrated actuator simplify installation and calibration Supports both cooling with reheat and fan-powered box configurations Addressable communications via N2 or Zone Bus provide flexibility in building automation integration Compact, pre-wired modular assembly reduces installation time and potential wiring errors Designed for reliability across wide temperature & humidity ranges Applications VAV systems in commercial buildings where control over airflow and temperature is needed Reheat applications to maintain occupant comfort during variable load conditions Fan-powered terminal boxes in multi-zone HVAC systems Retrofit or replacement of existing VMA controllers Installation & Maintenance Notes Set communication address before or during mounting using DIP switches; consult control software for settings Mount controller so wiring is accessible; ensure proper alignment with damper shaft and use correct set-screw methods Provide clean supply voltage and avoid electrical noise on control wiring Periodic calibration, temperature verifications, and actuator feedback checks help ensure long-term performance Related Products VMA1410-0 (cooling-only variant of the VMA 1400 series) VMA1430-0 (controller only, without internal actuator) VMA1440-0 (used in building zoning systems) Accessories such as screw terminal kits (2- or 3-position plugs) Compatible room sensors and external actuator modules