Filling The System - Viessmann Divicon Installation Instructions Manual

Filling the system

1. For filling (with heating water), open
the check valve in the heating
return. To do so, move the slot of
the screw to a vertical position.
Note
Observe the marking on the adjust-
ing screw.
12
1.
2.
2. For operation, position the slot of
the screw in the horizontal position.