Thank you Myzhar.
According to this Zed2i Operating Temperature mismatch spec sheet vs webpage it should be +50°C. Did you update spec and get back the upper bound to +45°C?
Ok I will cover it in order to reduce direct irradiation.
If I would place an heatsink or even an active cooling is the backplate the best place to put it? I mean the backplate with the four M3 screws.