De Dietrich Setting thermostat 95363364

The De Dietrich setting thermostat 95363364 is a mechanical thermostat with an adjustable range of 30-90°C. It operates by opening or closing a contact when the sensed temperature reaches the set point, typically used to regulate boiler water temperature or provide high-limit safety. This part is compatible with De Dietrich GT 330/430/530 S3 and GT300/400/GTE500 K boilers. The manufacturer code is 336.805.013, and the additional part number is 95363364.

When selecting a replacement setting thermostat of this kind, verify the adjustable temperature range, switching differential, probe form (immersion, clamp-on, or sleeve), capillary length, and electrical rating against the original part. Ensure the thermostat is correctly seated in its pocket or clamped firmly to the pipe for good thermal contact. Check that electrical connections match the original wiring, as incorrect polarity or loose terminals can cause erratic operation.

Common failure modes for mechanical thermostats include mechanical wear of the switching mechanism, loss of calibration causing a drifting set point, or capillary tube damage. When such a thermostat fails, the equipment may not regulate temperature correctly, potentially leading to overheating or underheating. Check the thermostat's set point accuracy and physical condition, and verify proper thermal contact with the sensed surface.