Further Details Regarding The Individual Steps; Filling The Heating System On The Heating Water Side - Viessmann vitoladens 300-t Service Instructions Manual

Commissioning, inspection, maintenance

Further details regarding the individual steps

Filling the heating system on the heating water side

1. Close shut-off valve B in the return
line.
2. If using a top-mounted Divicon
(accessory):
Set the mixer lever to "OPEN" (red).
6
B
A
3. Fill the system via fill valve A on the
heating water return, until it is fully
vented.
4. Open shut-off valve B again.