Samson 5 D Einbau- Und Bedienungsanleitung Seite 4

The Type 5 D Controller closes the air inlet flap as the temperature
rises.
The controller can be installed either vertically or horizontally.
When installed horizontally, the hexagon screw (S) must point
upwards. For control in this position, the red figures and the red
mark are used (Fig. 1).
When installed vertically, the hexagon screw (S) must point to the
back when seen from the front of the boiler. In this position, the
white figures and the white mark are used (Fig. 2).
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