
Hermann Micraplus NOx 24 B 2 12 Domestic Hot Water Plate Heat Exchanger Ref. 0020059452
The ACS plate heat exchanger transfers heat from the primary circuit to the domestic hot water instantly, being an essential part of the Hermann Micraplus NOX 24 B 2 12 boiler with reference 0020059452. When it fails, the water comes out lukewarm or shows fluctuating temperatures, and it may also reduce the flow of domestic hot water. This component is compatible with models such as Micraplus 24/30, Micraplus NOX 25, and Micraplus 24 SE A/1, among others. It is recommended to replace it upon noticing these symptoms of malfunction.
VAT included
Consult via WhatsAppHermann boilers compatible with reference 0020059452
Plate heat exchanger with reference 0020059452. Five confirmed compatibilities: Micraplus 24/30 and Micraplus NOX 25.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Hermann Micraplus 24/30 | Hermann Micraplus | Contrasted |
| Hermann Micraplus NOx 25 | Hermann Micraplus | Contrasted |
| Hermann Micraplus 24 SE A/1 | Hermann Micraplus | Contrasted |
| Hermann Micraplus NOx 24-B-2 | Hermann Micraplus | Contrasted |
| Hermann VMW 240 | Vaillant VMW | Contrasted |
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 the reference 0020059452 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 0020059452. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the plate heat exchanger 0020059452 resolves.
The plate heat exchanger transfers heat to the domestic hot water. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
There is no domestic hot water, or it comes intermittently.
Cause: The water flow through the plates is obstructed by limescale, which prevents efficient heat exchange.
Measure the cold water inlet flow rate and check that the faucet closest to the boiler provides normal pressure before inspecting the heat exchanger.
- 02
The tap water comes out lukewarm, it never really gets hot.
Cause: The accumulated scale reduces the heat exchanger's ability to transfer heat, even if the burner is functioning correctly.
Check the set temperature for domestic hot water on the control and make sure the burner ignites properly in heating mode.
- 03
The water temperature jumps sharply when opening or closing another faucet.
Cause: A blocked heat exchanger can change its performance with small changes in flow rate, affecting the water mixture.
Open the tap slowly and observe if the temperature jump occurs consistently with the same flow rate.
- 04
Water or humidity appears in the area where the heat exchanger is installed.
Cause: The heat exchanger has lost tightness between plates or at the joint with the boiler body.
Dry the area, turn on the boiler, and locate the exact point of the leak before replacing the part.
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.
Plate heat exchanger sheet Hermann 0020059452
- Catalogue reference
- 0020059452
- Brand
- Hermann
- Type of part
- Plate heat exchanger
- Units in stock
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days












