
iO HVAC Controls HD-MOTOR Damper Actuator
The iO HVAC Controls HD-MOTOR is a robust 24V 2-wire actuator designed for professional-grade reliability in residential and light commercial zoning systems. As a spring return normally closed motor, it provides a failsafe operation for fresh air dampers, ensuring the intake remains sealed when de-energized to prevent unconditioned air infiltration. This motor is engineered as a direct, high-performance replacement for the Honeywell M847D-ZONE, as well as the M847D1004 and M847D1012 models, offering a seamless fit for ARD series round dampers and Trol-A-Temp legacy systems. Featuring reinforced internal gearing and a simplified 2-wire 24VAC lead configuration, it eliminates the complexity of multi-wire setups during field retrofits. Whether you are servicing Zonefirst ZDS units or upgrading fresh air ventilation intake setups, the HD-MOTOR delivers the high-torque performance required to maintain precise airflow control and system static pressure balance.
Key Benefits- Direct M847D Replacement: Engineered for a drop-in fit for Honeywell M847D series and Retrozone RZ3-1M actuators, reducing truck-stock requirements.
- Spring Return Failsafe: Automatically drives the damper blade to the closed position during power loss, protecting the heat exchanger from cold drafts.
- Broad Compatibility: Fully compatible with iO HD Series Dampers, 2-wire 24V zone control panels, and standard 18-gauge thermostat wiring.
- Contractor-Grade Durability: Features heavy-duty gears and a high-impact plastic cover that is easily removable for rapid terminal access.
Does this motor work with Honeywell ZD rectangular dampers?
No, the HD-MOTOR is specifically designed for ARD round dampers and the iO HD/D series with a 1/2-inch shaft. For rectangular ZD dampers, a different synchronous motor or shaft adapter may be required.
Is this a Power-Open or Power-Closed actuator?
This model is a Power-Open / Spring Return Closed actuator. It requires constant 24V power to hold the damper open and will spring shut the moment power is cut.
Can I use this for fresh air intake ventilation?
Yes, it is the standard actuator for fresh air ventilation systems that require a normally closed position to meet ASHRAE 62.2 standards for controlled outdoor air introduction.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
iO HVAC Controls HD-MOTOR Damper Actuator
The iO HVAC Controls HD-MOTOR is a robust 24V 2-wire actuator designed for professional-grade reliability in residential and light commercial zoning systems. As a spring return normally closed motor, it provides a failsafe operation for fresh air dampers, ensuring the intake remains sealed when de-energized to prevent unconditioned air infiltration. This motor is engineered as a direct, high-performance replacement for the Honeywell M847D-ZONE, as well as the M847D1004 and M847D1012 models, offering a seamless fit for ARD series round dampers and Trol-A-Temp legacy systems. Featuring reinforced internal gearing and a simplified 2-wire 24VAC lead configuration, it eliminates the complexity of multi-wire setups during field retrofits. Whether you are servicing Zonefirst ZDS units or upgrading fresh air ventilation intake setups, the HD-MOTOR delivers the high-torque performance required to maintain precise airflow control and system static pressure balance.
Key Benefits- Direct M847D Replacement: Engineered for a drop-in fit for Honeywell M847D series and Retrozone RZ3-1M actuators, reducing truck-stock requirements.
- Spring Return Failsafe: Automatically drives the damper blade to the closed position during power loss, protecting the heat exchanger from cold drafts.
- Broad Compatibility: Fully compatible with iO HD Series Dampers, 2-wire 24V zone control panels, and standard 18-gauge thermostat wiring.
- Contractor-Grade Durability: Features heavy-duty gears and a high-impact plastic cover that is easily removable for rapid terminal access.
Does this motor work with Honeywell ZD rectangular dampers?
No, the HD-MOTOR is specifically designed for ARD round dampers and the iO HD/D series with a 1/2-inch shaft. For rectangular ZD dampers, a different synchronous motor or shaft adapter may be required.
Is this a Power-Open or Power-Closed actuator?
This model is a Power-Open / Spring Return Closed actuator. It requires constant 24V power to hold the damper open and will spring shut the moment power is cut.
Can I use this for fresh air intake ventilation?
Yes, it is the standard actuator for fresh air ventilation systems that require a normally closed position to meet ASHRAE 62.2 standards for controlled outdoor air introduction.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The iO HVAC Controls HD-MOTOR is a robust 24V 2-wire actuator designed for professional-grade reliability in residential and light commercial zoning systems. As a spring return normally closed motor, it provides a failsafe operation for fresh air dampers, ensuring the intake remains sealed when de-energized to prevent unconditioned air infiltration. This motor is engineered as a direct, high-performance replacement for the Honeywell M847D-ZONE, as well as the M847D1004 and M847D1012 models, offering a seamless fit for ARD series round dampers and Trol-A-Temp legacy systems. Featuring reinforced internal gearing and a simplified 2-wire 24VAC lead configuration, it eliminates the complexity of multi-wire setups during field retrofits. Whether you are servicing Zonefirst ZDS units or upgrading fresh air ventilation intake setups, the HD-MOTOR delivers the high-torque performance required to maintain precise airflow control and system static pressure balance.
Key Benefits- Direct M847D Replacement: Engineered for a drop-in fit for Honeywell M847D series and Retrozone RZ3-1M actuators, reducing truck-stock requirements.
- Spring Return Failsafe: Automatically drives the damper blade to the closed position during power loss, protecting the heat exchanger from cold drafts.
- Broad Compatibility: Fully compatible with iO HD Series Dampers, 2-wire 24V zone control panels, and standard 18-gauge thermostat wiring.
- Contractor-Grade Durability: Features heavy-duty gears and a high-impact plastic cover that is easily removable for rapid terminal access.
Does this motor work with Honeywell ZD rectangular dampers?
No, the HD-MOTOR is specifically designed for ARD round dampers and the iO HD/D series with a 1/2-inch shaft. For rectangular ZD dampers, a different synchronous motor or shaft adapter may be required.
Is this a Power-Open or Power-Closed actuator?
This model is a Power-Open / Spring Return Closed actuator. It requires constant 24V power to hold the damper open and will spring shut the moment power is cut.
Can I use this for fresh air intake ventilation?
Yes, it is the standard actuator for fresh air ventilation systems that require a normally closed position to meet ASHRAE 62.2 standards for controlled outdoor air introduction.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












