Wilo pump INTNFSL12/5 HE-1 · 4522812 for Biasi Midas Eco, Minox Eco, and Myto Condens

Biasi boilers compatible

Circulating pump. Four confirmed compatibilities: Baxi Roca Midas Eco 24 E and Baxi Roca Minox Eco 24 E. There are another 6 models that we are still verifying.

Proven compatibility

Models pending verification

These models are associated with this reference, but we have not finished verifying them yet, so we do not consider them compatibleIf your boiler is one of them, send us a photo of the part you are going to replace and we will verify it before you purchase.

Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.

How to check if it is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

1. Look for the designation INTNFSL12/5 HE-1 and the number 4522812 next to "N°" on the pump label. Ours also has 4022.3080.61 and 13W51.
2. Check the data on the PCB: 230 V · 50 Hz, 77 W and 0.34 A.
3. Compare 4531269 and the suffix CLF 12 WIT with your pump: Wilo provides them for the NFSL12/5-HE-1 CLF 12 WIT and we are not sure if it is the same. The BI1352100 is another code.
4. Check if your boiler is Midas Eco 24 E, Minox Eco 24 E or 28 E, or Myto Condens 24. For another model, compare the codes with its parts list.
5. If they match, call us at 911 17 77 77 with the model of your boiler.

Symptoms that require diagnosis in the circulation pump

The circulation pump circulates the water in the heating circuit. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  Fault E04 on the Biasi Midas Eco 24E/28E

  Cause: The Manaut manual indicates it as "pump circulation fault or insufficient pressure in the system." It is a warning from the boiler, not proof that the pump is faulty: also check the pressure.

• 02

  The display of the Biasi Midas Eco 24 E shows E04.

  Cause: The boiler detects a lack of circulation from the pump or insufficient pressure in the system. It is a warning from the boiler: it does not prove that the pump is faulty.

  First, check the pressure of the circuit. If it is correct and the warning persists, have a technician check if the pump is circulating the water.

Fault codes Manaut / Biasi that require diagnosis

These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.

Technical sheet: bomba circuladora Manaut / Biasi

Uniclima internal SKU

BCEGISNOX24FF

Brand

Biasi

Type of part

Pumps

Units in stock

19 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

Part data and available documentation

Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.

Printed number next to No.

4522812

Voltage

230 V

Frequency

50 Hz

Absorbed power

77 W

Current

0.34 A

Material of the plastic/hydraulic subcomponent

PP-GF30

Alphanumeric code on the label

13W51

Additional printed code

4022.3080.61

Place of manufacture

Manufactured in the EU

Source of additional data

Declared information; auxiliary references and applications without equivalent from the accredited manufacturer.

Inventory — Plastic/Hydraulic Subcomponent

PP-GF30 material

Manufacturer information — What they sell with BI1462109

Only the pump motor ("motor sold separately")

Manufacturer data — INT · NFSL · 12

Integrated asynchronous motor · circulator with air bleeder · 3/4 inch thread · Wilo OEM Catalog 2017 (table NFSL12/6)

Pending applications to verify

Registered application: for your product 10763 ("Circulating Pump Boiler BIASI (INTNFSL12/5 HE-1)"): Rinnova Nox; M160.2025 SM; M95.28 CM/BD. Pending verification with the manufacturer's documentation for the reference and physical variant; this commercial statement does not certify compatibility or interchangeability.