66
Note
■
Move the control unit panel into the service position:
See page 84.
■
Open the programming unit:
See page 83.
Filling and venting the DHW cylinder on the DHW side
B
Fig. 59
1.
The lever on valve
B
must be in the "left" position.
2.
Open the on-site DHW supply and a DHW draw-off
point.
3.
Once air stops coming out of the DHW draw-off
point, the loading cylinder is completely filled.
Checking the expansion vessel and heating circuit pressure
Commissioning, inspection, maintenance
Filling and venting the secondary side
(cont.)
51
17 700 GB
