Honeywell MS8109F1210/B Fire & Smoke Damper Actuator – Reliable Safety Solution for HVAC Systems
Posted on: 07/07/2026
In projects with strict fire safety requirements, such as commercial centers, hospitals, factories, or high-rise office buildings, fire dampers and smoke dampers play a vital role in preventing fire and smoke from spreading through the ductwork during an incident. To ensure the precise operation of these dampers, M&E engineers require an actuator that meets the highest safety standards—and Honeywell's MS8109F1210/B fire and smoke damper actuator is the trusted choice for many contractors.
Product Overview: Honeywell MS8109F1210/B
The MS8109F1210/B is a high-performance, spring-return motorized damper actuator within Honeywell’s premier MS Series automation portfolio. Engineered specifically for dedicated Fire & Smoke Damper integration, this unit enforces positive interlock and rapid zero-energy positioning (fail-safe) under critical alarm conditions, ensuring code compliance across complex ventilation networks.
Technical Specifications (Electrical & Control Standards)
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Parameter / Specification
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Engineering Details
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Model Identifier
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MS8109F1210/B
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Manufacturer / Origin
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Honeywell Home and Building Control (USA Brand) / Made in Mexico
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Supply Voltage / Power Input
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24 Vac/dc ±10% (Non-isolated, half-wave rectified control circuit)
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Power Consumption
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75 mA maximum @ 24 Vdc (Holding status)
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Nominal Torque Output
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9 Nm (80 lb-in)
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Control Type & Action
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Two-position (ON/OFF control) with mechanical Spring-Return fail-safe
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Safety Certifications
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UL Listed (UL873, UL2043 plenum rating, Fire & Smoke application standards)
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Working Medium / Application
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Airflow systems (Duct-mounted mechanical fire/smoke barriers)
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Enclosure Protection Class
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IP54 / NEMA 2 (Polycarbonate housing with integrated cable gland options)
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Onsite Installation & Commissioning Protocols
The following deployment and testing workflows outline standard site practices for commissioning the MS8109F1210/B actuator. Field engineers must cross-examine the approved electrical schematics and manufacturer datasheets prior to field wiring integration.
1. Pre-Installation Mechanical Check: Confirm that the structural smoke/fire damper frame is rigidly anchored. Manually actuate the damper shaft to ensure a smooth, low-friction, 0-to-90-degree dynamic sweep before mounting the actuator core.
2. Co-Axial Mounting Alignment: Slide the MS8109F1210/B self-centering shaft coupling onto the damper shaft. Secure the actuator housing to the anti-rotation bracket. Ensure strict concentricity between the actuator drive hub and the damper shaft to prevent mechanical binding, excessive radial force, or premature gear wear.
3. Fastener Torque Enforcement: Tighten the locking nuts on the universal coupling clamp according to the manufacturer's specified torque rating to eliminate backlash and prevent shaft slippage under maximum aerodynamic load.
4. Electrical Wiring Integration: Terminate the 24V power supply leads and auxiliary status monitoring circuits in strict compliance with the approved wiring diagram. Verify terminal polarities before energizing.
5. Manual Override & Stroke Calibration: Utilize the manual override mechanism to test the full physical rotation limits. Verify that the end stops line up precisely with the full open and tightly-sealed closed positions of the damper blades.
6. Dynamic Fail-Safe Loop Testing: Perform functional testing of the Spring-Return safety function. Simulate emergency shutdown sequences by interrupting the primary 24V power loop or triggering a simulated fire alarm command signal. The mechanical internal spring must immediately drive the damper back to its designated fail-safe isolation position within code-mandated timing limits.
7. Commissioning Log & Maintenance Cycle: Record operating current values, mechanical stroke times, and auxiliary switch feedback telemetry. Incorporate the asset into the building's preventative maintenance plan (recommended preventative diagnostic cycles at 6 or 12-month intervals).
Typical System Architecture & Applications
The Honeywell MS8109F1210/B is systematically deployed across the following technical layouts:
- Fire and Smoke containment zones within heavy-duty commercial HVAC ductwork networks.
- Engineered smoke extraction, basement ventilation, and pressurization stairwell loops.
- Critical infrastructure projects including high-rise offices, medical cleanrooms, and GMP-certified pharma facilities.
- Automated interlock control via regional Direct Digital Control (DDC) panels or PLC-driven BMS environments.
Why Choose to Source Honeywell Solutions from DLK?
- 100% Factory-Original Honeywell Equipment, directly imported with complete, unvouched Certificate of Origin (CO) and Certificate of Quality (CQ) trace records.
- Professional application engineering support to verify torque calculations, dumper pairing parameters, and schematic validation.
- Instant access to localized submittal datasheets, wiring diagrams, and engineering catalogs.
- Structured commercial policies with responsive post-sales field technical backup.
- Rapid, project-coordinated freight delivery to job sites nationwide.
Contact DLK for Engineering Consultation & Tender Quotations
Are you provisioning genuine Honeywell MS8109F1210/B fire & smoke damper actuators backed by comprehensive project compliance documentation and optimized commercial terms?
Connect with DLK TRADING SERVICE COMPANY LIMITED today to review your project schematics and secure a formal commercial quotation.
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