Description
The Honeywell ML6174A2002 is a non-spring return, direct coupled damper actuator engineered for reliable, precise damper control in commercial and light industrial HVAC systems. Designed for direct shaft mounting without the need for linkages, this actuator delivers consistent performance across a wide range of applications including air handling units, VAV systems, and economizer dampers.
Key Features
- Non-spring return design for reliable bi-directional damper positioning
- Direct coupled mounting — no linkage required for fast, easy installation
- On/Off, SPDT, and Floating control modes for flexible system integration
- 70 lb-in torque output for dependable damper actuation
- 90-second nominal drive time for smooth, controlled damper movement
- Feedback signal available with accessory for position monitoring and BAS integration
- Compatible with 3/8″ to 1/2″ square or round shafts
- Wide ambient operating range: 20°F to 125°F (−7°C to 52°C)
- Operating humidity range: 5% to 95% RH (non-condensing)
Electrical Specifications
- Supply voltage: 24 Vac
- Control type: On/Off, SPDT, Floating point
Mechanical Specifications
- Torque: 70 lb-in
- Drive time: 90 seconds nominal
- Shaft compatibility: 3/8″ to 1/2″ square or round
- Mounting: Direct coupled, non-spring return
Environmental Ratings
- Ambient temperature: 20°F to 125°F
- Relative humidity: 5% to 95% RH (non-condensing)
Applications
- Air handling units (AHUs)
- Variable air volume (VAV) systems
- Economizer and outdoor air dampers
- Commercial HVAC zoning and building automation systems
The ML6174A2002 is an ideal choice for HVAC contractors and building automation professionals seeking a robust, versatile actuator with broad shaft compatibility and multi-mode control flexibility. The optional feedback accessory makes it well-suited for integration with building management systems requiring real-time damper position data.
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