T-4100-1 Johnson Controls Thermostat

Overview

The Johnson Controls M9220-HGA-3 is a high-performance, direct-mount, spring-return electric actuator engineered for precise, proportional control of dampers and valves in commercial HVAC and building automation systems. Operating on a 24 VAC/VDC power supply, it features an adjustable start and span capability to allow fine-tuning of the control range to exact system requirements, ensuring safe failsafe positioning upon power loss.

Features

• Proportional control with field-adjustable zero and span for custom signal conditioning.
• Direct-coupled mounting eliminates the need for linkages, crank arms, or brackets.
• Reversible mounting design allows the actuator to spring return in either direction.
• Electronic stall detection across the entire rotation range protects the motor and extends device life.
• Removable coupler easily adapts to shorter damper shafts.

Specifications

• Torque Output: 177 lb-in (20 N·m) for single units; supports tandem mounting for increased torque.
• Power Supply: 24 VAC at 50/60 Hz or 24 VDC.
• Power Consumption: 15.5 VA running / 7.7 VA holding (AC); 6.7 W running / 2.9 W holding (DC).
• Control Input Signal: Proportional 0-10 VDC, 2-10 VDC, or 4-20 mA (with a field-furnished 500 Ohm resistor).
• Rotation Range: 93° nominal, switch-selectable direct or reverse action.
• Enclosure Rating: NEMA 2 / IP54 aluminum body.
• Electrical Connection: 48-inch (1.2 m) halogen-free cable with wire leads.

Applications

• Control of return air, exhaust air, and outdoor air economizer dampers in air handling units.
• Precise positioning for zone dampers and constant volume ventilation systems.
• Compatible with DDC-controlled HVAC systems requiring proportional modulation.
• Suitable for handling commercial valve configurations in building automation systems.