The housing does not determine calibration
The colour of the label and the external resemblance are not enough to choose the Replacement part. Confirms the marking and version; it is not proposed to modify its setting.

Reconditioned air pressure switch Saunier Duval Thema Nox F25 B/1. Black cylindrical pressure switch with a metal ring, upper terminals and a threaded connection underneath. Compare the stated pressure setting, pressure ports and electrical contacts with those of the installed pressure switch.
Compare the full code, Ports and terminals. Two Pressure switches can share housing and have a different calibration.
The metal ring and the lower Connection. Compare the views from the same angle and the complete identification of the removed Part.
Choose a photo of your part to view it beside this unit. Compare the labels, connectors and mounting points from the same angle.
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Application listed in the catalogue: Saunier Duval Thema Nox F25 B/1. The variant and configuration must match the installed equipment; this does not establish compatibility with other models.
No models are documented for that search.
The application is listed in the catalogue and must be checked against the installed variant. Compatibility has not been confirmed against an exploded parts diagram.
The colour of the label and the external resemblance are not enough to choose the Replacement part. Confirms the marking and version; it is not proposed to modify its setting.
We repair boilers in Madrid and the surrounding areas. Installation is arranged separately from the purchase of the part.
Pressure switch cylindrical black with metal hoop, top terminals and Connection threaded bottom. Compare these details with the Part removed and their complete identification.
The metal ring and the lower Connection. Compare the views from the same angle and the complete identification of the removed Part.
This product page identifies the catalogued application Saunier Duval Thema Nox F25 B/1. It does not establish equivalence with other versions; service documentation linking Part to the specific model is required to extend compatibility.