Wolf CGB-K-20 circulation pump Wilo RSL15/6.7 HE-3 C Ku Ref. 4512947

Wilo RSL15/6.7 HE-3 C Ku circulator pump, no. 4512947. It moves the water in the heating circuit and operates at 3 speeds (44, 65, and 87 W, 230 V). It is confirmed for the Wolf CGB-K-20. It is sold refurbished and tested, with a 1-year warranty.

Type of part: Pumps
Status: Refurbished
internal SKU: BOM056
Warranty: 1 year

VAT included Stock · 3 units

Compatibility

Wolf compatible boilers

Circulating pump. A proven compatibility: CGB-K-20.

Proven compatibility

Boiler model	Family	Verification
Wolf CGB-K-20	Wolf	Contrasted

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

Guide

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.

Look at the motor label. It should say Typ RSL15/6.7 HE-3 C Ku and No. 4512947.
Check the power and currents of the 3 speeds: 44 W (0.21 A), 65 W (0.30 A), and 87 W (0.40 A), with 230 V ~ 50 Hz and 2.6 µF.
If your pump indicates another type, for example, for RSL Ku/7-50 SC-12, or if it is modulating, this is not the one.
Check the label on your boiler for the model and year of manufacture. If it is a Wolf CGB-K-20 and your current pump has the label type RSL15/6.7 HE-3 C Ku, this pump is suitable. If your pump is modulating or of another type, this is not the one. If it is another Wolf, please consult us before purchasing.
Send us a photo of the pump label and the boiler control board from Contact, or call 911 17 77 77.

Diagnosis and fault codes

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
The radiators do not heat up even though the boiler turns on.
Cause: The pump is not circulating water or there are closed circuit valves.
Check that the circuit switches are open and test the 3 speeds.
02
Noise or vibration in the pump.
Cause: Air in the circuit or worn pump.
Bleed the air from the radiators and boiler. If the noise persists, the pump may be worn out.
03
The pump hums but does not rotate after a long stop.
Cause: Stuck rotor: the shaft may be blocked by scale or sludge.
Check if the shaft is blocked by scale or sludge.
04
Water leaks in the pump body.
Check the seals and connection nuts.
05
The boiler locks out due to lack of circulation.
Check the pressure of the circuit and that the pump is receiving voltage.

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 data

Technical sheet: Wolf circulator pump

Uniclima internal SKU: BOM056
Brand: Wolf
Type of part: Pumps
Units in stock: 3 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.

Reference: 4512947
Pump: Wilo RSL15/6.7 HE-3 C Ku
Brand on the label: Wolf
Wolf spare part code of the same type: 8602721 (replaces 2015112)
Speeds: 3
Speed I: 44 W · 0.21 A
Speed II: 65 W · 0.30 A
Speed III: 87 W · 0.40 A
Power supply: 230 V ~ · 50 Hz
Condenser: 2.6 µF
Protection: IP44 · class F
Water temperature: Up to 95 °C (TF95)
Nominal pressure: PN6 (6 bar)
Origin: Made in EU
Other marked on the label: 1191518 · 11W09
Number under the barcode: 201511210910839602
Electrical connector: 3 contacts

Before purchasing

Do not confuse with 2075309: Wilo Para RSL Ku/7-50 SC-12. It is another pump, with a different type on the label.
Do not confuse with 8611291 (2070421): Grundfos UPER 15-60 modulating pump for the CGB. It is another pump: 4512947 is a 3-speed pump.
Please consult us before purchasing if your boiler is: Wolf CGB-11, Wolf CGB-20, Wolf CGB-24, Wolf CGB-K-24, Wolf CGS-20/160, Wolf CGS-24/200, Wolf CGW-11/100, Wolf CGW-20/120, Wolf CGW-24/140.

Frequently Asked Questions

Frequently asked questions about the circulation pump

Where is the pump code?

On the motor label: type RSL15/6.7 HE-3 C Ku and No. 4512947. The same label shows 44/65/87 W, 2.6 µF and 230 V ~ 50 Hz.

What is the relationship between 4512947, 8602721, and 2015112?

The 4512947 is the Wilo number on the label. The 8602721 is the Wolf spare part code for the 3-speed Wilo RSL 15/6.7 HE-3 C Ku pump, of the same type as this one, and replaces the previous code 2015112. Always compare the type and power ratings on your pump's label with those of this one.

Is it compatible with other Wolf models such as the CGB-20, CGB-24, or CGS-24/200?

For the CGB-11, CGB-20, CGB-24, CGB-K-24, CGS-20/160, CGS-24/200, CGW-11/100, CGW-20/120, and CGW-24/140, please consult us before purchasing. Send us a photo of the boiler's control board, showing the model and year, and the label of your pump from the Contact section, or call 911 17 77 77.

What is the difference from other similar Wolf pumps?

The Wilo Para RSL Ku/7-50 SC-12 (2075309) is another pump, with a different type on the label. The 8611291 (Grundfos UPER 15-60) is modulating. This one operates at 3 speeds and its label says RSL15/6.7 HE-3 C Ku.

Is it sold tested and with a warranty?

Yes. The circulation pump is refurbished and tested, and it comes with a 1-year warranty. The installation must be carried out by a qualified technician.

Entrega calculada por destino Delivery time shown at checkout

1-year warranty reviewed and tested

14-day return uninstalled parts

Technical support we verify your model

Wolf CGB-K-20 circulation pump Wilo RSL15/6.7 HE-3 C Ku Ref. 4512947