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Radial fan NRG118 for Viessmann gas condensing boiler
Model: NRG118
Manufacturer: Viessmann
Purpose: For condensing boiler
Part type: Fan
Boiler power: 30/35 kW
Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Viessmann |
| Brand compatibility | Viessmann |
| Model | NRG118 |
| Compatible boilers | Viessmann 7837255 WB1C |
| Compatible models |
|
How to choose the right part
When selecting the NRG118 radial fan for your Viessmann gas condensing boiler, consider the following points:
- Ensure that the fan model (NRG118) matches your boiler model (e.g., WB1C).
- Check the power of your boiler (30/35 kW) and compare it with the fan specifications.
- Pay attention to compatibility with other Viessmann models if you have the option to use alternatives.
Possible causes of failure
Fans may fail for the following reasons:
- Clogged ventilation ducts, leading to overheating.
- Wear of bearings, which can cause noise or fan stoppage.
- Electrical faults or short circuits affecting motor operation.
To prevent failures, it is recommended to regularly clean the ventilation ducts and check the condition of the fan.
Fan replacement recommendations
- Disconnect the boiler from the power supply for safety.
- Remove the boiler cover to access the fan.
- Disconnect the electrical connections from the fan.
- Free the fan from its mounts and carefully remove it.
- Install the new NRG118 fan in place of the old one and secure it.
- Reconnect the electrical connections and close the boiler cover.
- Turn on the boiler and check the fan operation.
Difficulty assessment for replacement
Replacing the NRG118 radial fan is of medium difficulty. If you have basic tool skills and an understanding of boiler operation principles, you should be able to perform the replacement yourself. However, if you are unsure of your abilities, it is recommended to consult a professional.