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Viessmann 7831369 Radial Fan Continuous Variable Inverter 120V NRG118

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Special Price $510.17 Regular Price $566.29
In stock
SKU
7831369
The Viessmann 7831369 Radial Fan Continuous Variable Inverter NRG118 is an electronically controlled fan assembly, a blower, which is used to control airflow in combustion and ventilation systems by continuously changing the fan speed according to the demand of the system. It operates a radial impeller with an in-built inverter motor of 120V to control the airflow with precision and save energy in relation to fixed-speed fans. It is fitted into the draft or vent path, and it is linked to the control module.
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HVAC Controls & Electrical, Inverters & Parts
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Product Questions (2)
Customer Questions
What maintenance is required for the Viessmann 7831369 Radial Fan?

Regularly clean the fan blades and housing to remove dust and debris. Check electrical connections for tightness and signs of wear. Lubricate bearings if specified by the manufacturer. Proper maintenance ensures smooth operation and prevents overheating.

What are common issues with the Viessmann 7831369 Radial Fan?

  • Inconsistent fan speed or output.
  • Excessive vibration or noise.
  • Electrical connection faults.
  • Overheating or inverter errors.

Installation Steps

Step 1: Turn off power supply and verify circuit is isolated.

Step 2: Mount radial fan securely in designated housing, aligning inlet and outlet airflow direction.

Step 3: Connect wiring to inverter terminals per schematic, ensuring correct polarity and grounding.

Step 4: Tighten all fasteners, check blade clearance, and ensure no obstruction before energizing.

Step 5: Restore power, test variable speed operation, confirm smooth rotation and airflow.