
Thermometer Baxi Roca NGO50 IMIT Ref. 182020512
Sphere thermometer with capillary, manufactured by IMIT according to the logo printed under the needle, with a scale of 0 to 120 °C. Reference 182020512 clearly printed on the dial. It visually displays the temperature of the boiler water. The replacement requires first confirming the fault of the part through technical diagnosis, even when the needle does not move, is stuck, or the dial is broken.
- Type of part
- Pressure gauges & aquastats
- Status
- Refurbished
- Catalogue reference
- 182020512
- Warranty
- 1 year
Saunier Duval boilers compatible with reference 182020512
Pressure gauge with reference 182020512. A proven compatibility: NGO50.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval NGO50 | Baxi Roca | 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 ref. 182020512 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 182020512. 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 that require diagnosis on the manometer 182020512
The manometer shows the pressure of the boiler circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The needle doesn't move and always shows the same temperature, whether it's cold or hot in the boiler.
Cause: The liquid in the capillary has been lost due to a leak, and the mechanism can no longer expand with heat.
Check if the capillary has any bends, crushing, or leakage stains before replacing the thermometer.
- 02
The thermometer shows a temperature that doesn't match how hot the water actually is.
Cause: The sensor bulb is not properly inserted into its sheath and does not make direct contact with the water.
Check that the bulb is fully inserted into the well and hasn't come loose due to the boiler's vibrations.
- 03
The dial is broken or the glass is cracked, and the scale cannot be read.
Cause: A blow or the passage of time cracks the glass or loosens the sphere from its mount
Before replacing it, check if the needle responds when the boiler is heated, even if the glass is damaged, to see if the mechanism still works.
- 04
The needle gets stuck at one end of the scale, either up or down.
Cause: With the capillary tube devoid of liquid, the needle falls by gravity to the lowest stop on the dial.
Carefully touch the pipe to confirm if the water is actually hot even if the needle doesn't show it.
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.
Data sheet for the Saunier Duval pressure gauge 182020512
- Catalogue reference
- 182020512
- Uniclima internal SKU
- MTAASTY300
- Brand
- Saunier Duval
- Type of part
- Pressure gauges & aquastats
- Units in stock
- 7 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.
- Temperature range
- 0-120 °C
- Manufacturer
- IMIT


