IMIT thermohydrometer
If you notice incorrect pressure or temperature readings on your boiler, it may be time to replace the IMIT thermohydrometer. This part measures and controls the pressure or temperature of the circuit, ensuring proper operation. When it fails, the boiler may lock out due to a false lack of pressure or may not regulate the temperature correctly. This thermohydrometer is compatible with models from the Universal range NOT Linked to A Specific Boiler Manufacturer TID 83, among others. It is recommended to replace it when the readings are unreliable.
VAT included
Consult via WhatsAppBiasi boilers compatible with reference E3321
Pressure gauge with reference E3321. A proven compatibility: Universal NOT Linked to A Specific Boiler Manufacturer TID 83.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Biasi Universal NOT Linked to a Specific Boiler Manufacturer TID 83 | Thermohydrometer | 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. E3321 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 E3321. 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 manometer E3321 resolves.
The manometer shows the pressure of the boiler circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
Neither the temperature needle nor the pressure needle are moving; both are stuck.
Cause: When the mechanism of a dual-needle thermohygrometer gets stuck, it affects both scales at the same time.
Gently tap the glass with your finger and see if any needle reacts before deeming it unusable.
- 02
Only the red pressure needle is not responding, the temperature one does move.
Cause: Each needle has its own internal mechanism and one can fail without the other doing so.
Check the actual pressure with the circuit filling key to confirm that the fault is with the instrument and not the circuit.
- 03
The sphere is fogged up inside, and neither of the two scales can be read clearly.
Cause: Moisture enters the instrument when the sealing gasket of the glass ages.
Check if the fogging is only superficial, on the outside of the glass, before replacing the part.
- 04
The glass of the dial is broken or scratched, and the numbers are not visible.
Cause: A blow during installation or wear in the boiler room can damage the protective glass.
Assess whether the damage is only cosmetic to the glass or if the needle has also stopped moving before deciding to replace 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.
Biasi E3321 pressure gauge datasheet
- Catalogue reference
- E3321
- Brand
- Biasi
- Type of part
- Pressure gauges & aquastats
- Units in stock
- 4 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Screen-printed manufacturer
- IMIT
- Temperature scale
- 30-120
- Pressure gauge
- 0-4
- Type of instrument
- Combined thermohydrometer, temperature needle + red pressure needle, cream dial, black ring and body
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Biasi Universal Manual NOT Linked to A Specific Boiler Manufacturer TID 83 (PDF)Document © Biasi, provided as a technical reference.
Frequently asked questions about the E3321 pressure gauge
Who manufactures the IMIT thermohygrometer Ref. E3321?
Is this IMIT thermohydrometer suitable for any boiler?
When should this IMIT thermohydrometer be replaced?
