Viessmann 7839819 Radial Fan
The Viessmann 7839819 Radial Fan is a critical combustion component designed for high-capacity Vitodens 200-W B2HA series gas-fired condensing boilers, specifically the 399 and 530 MBH models. Also designated as the NRG137 B2HA 399/530, this high-performance blower utilizes axial air intake and radial discharge to ensure precise air-fuel premixing, which is vital for maintaining the efficiency of the Lambda Pro combustion management system. For contractors performing a Viessmann blower motor replacement, this OEM part provides the exact static pressure required to overcome heat exchanger resistance, ensuring stable heating output and low-emission operation.
When troubleshooting boiler fan noise or airflow errors, installing this HVAC radial fan restores the system to factory specifications. This direct drive blower is engineered for continuous duty in residential and commercial applications, featuring a compact housing for streamlined installation in wall-mounted units. Always verify the 16-digit boiler serial number to confirm compatibility with the Vitodens 200-W fan motor assembly before proceeding with site repairs.
Key Benefits:- Optimized Combustion: Precisely regulates the air-gas mixture for maximum AFUE efficiency.
- Operational Stability: Engineered to provide consistent airflow under varying gas qualities.
- Quiet Performance: Advanced blade geometry reduces acoustic vibration during modulating cylinder burner operation.
- OEM Reliability: Built with high-grade materials to withstand the thermal demands of high-output 530 MBH systems.
- Will this fan fit the Vitodens 200-W B2HA 112/150 models? While both use NRG137 series fans, the 7839819 is specifically optimized for the higher-input B2HA 399 and 530 models; always check the boiler data plate for compatibility.
- What are the signs of a failing radial fan? Combustion instability, "Fan Fault" error codes on the color display, or excessive vibration during the modulation ramp-up phases.
- Is professional installation required? Yes, this component is part of the gas combustion path and must be installed by a licensed technician to ensure proper fuel-air calibration.
This item is not eligible for free shipping.
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.
Original: $1,318.97
-65%$1,318.97
$461.64Viessmann 7839819 Radial Fan
The Viessmann 7839819 Radial Fan is a critical combustion component designed for high-capacity Vitodens 200-W B2HA series gas-fired condensing boilers, specifically the 399 and 530 MBH models. Also designated as the NRG137 B2HA 399/530, this high-performance blower utilizes axial air intake and radial discharge to ensure precise air-fuel premixing, which is vital for maintaining the efficiency of the Lambda Pro combustion management system. For contractors performing a Viessmann blower motor replacement, this OEM part provides the exact static pressure required to overcome heat exchanger resistance, ensuring stable heating output and low-emission operation.
When troubleshooting boiler fan noise or airflow errors, installing this HVAC radial fan restores the system to factory specifications. This direct drive blower is engineered for continuous duty in residential and commercial applications, featuring a compact housing for streamlined installation in wall-mounted units. Always verify the 16-digit boiler serial number to confirm compatibility with the Vitodens 200-W fan motor assembly before proceeding with site repairs.
Key Benefits:- Optimized Combustion: Precisely regulates the air-gas mixture for maximum AFUE efficiency.
- Operational Stability: Engineered to provide consistent airflow under varying gas qualities.
- Quiet Performance: Advanced blade geometry reduces acoustic vibration during modulating cylinder burner operation.
- OEM Reliability: Built with high-grade materials to withstand the thermal demands of high-output 530 MBH systems.
- Will this fan fit the Vitodens 200-W B2HA 112/150 models? While both use NRG137 series fans, the 7839819 is specifically optimized for the higher-input B2HA 399 and 530 models; always check the boiler data plate for compatibility.
- What are the signs of a failing radial fan? Combustion instability, "Fan Fault" error codes on the color display, or excessive vibration during the modulation ramp-up phases.
- Is professional installation required? Yes, this component is part of the gas combustion path and must be installed by a licensed technician to ensure proper fuel-air calibration.
This item is not eligible for free shipping.
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.
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Description
The Viessmann 7839819 Radial Fan is a critical combustion component designed for high-capacity Vitodens 200-W B2HA series gas-fired condensing boilers, specifically the 399 and 530 MBH models. Also designated as the NRG137 B2HA 399/530, this high-performance blower utilizes axial air intake and radial discharge to ensure precise air-fuel premixing, which is vital for maintaining the efficiency of the Lambda Pro combustion management system. For contractors performing a Viessmann blower motor replacement, this OEM part provides the exact static pressure required to overcome heat exchanger resistance, ensuring stable heating output and low-emission operation.
When troubleshooting boiler fan noise or airflow errors, installing this HVAC radial fan restores the system to factory specifications. This direct drive blower is engineered for continuous duty in residential and commercial applications, featuring a compact housing for streamlined installation in wall-mounted units. Always verify the 16-digit boiler serial number to confirm compatibility with the Vitodens 200-W fan motor assembly before proceeding with site repairs.
Key Benefits:- Optimized Combustion: Precisely regulates the air-gas mixture for maximum AFUE efficiency.
- Operational Stability: Engineered to provide consistent airflow under varying gas qualities.
- Quiet Performance: Advanced blade geometry reduces acoustic vibration during modulating cylinder burner operation.
- OEM Reliability: Built with high-grade materials to withstand the thermal demands of high-output 530 MBH systems.
- Will this fan fit the Vitodens 200-W B2HA 112/150 models? While both use NRG137 series fans, the 7839819 is specifically optimized for the higher-input B2HA 399 and 530 models; always check the boiler data plate for compatibility.
- What are the signs of a failing radial fan? Combustion instability, "Fan Fault" error codes on the color display, or excessive vibration during the modulation ramp-up phases.
- Is professional installation required? Yes, this component is part of the gas combustion path and must be installed by a licensed technician to ensure proper fuel-air calibration.
This item is not eligible for free shipping.
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.
