Draining The Heating System (If Required) - Viessmann VITORONDENS 200-T Service Instructions Manual

Further details regarding the individual steps
A
A Filling/draining

Draining the heating system (if required)

Drain at filling/draining connector A.
Commissioning, inspection, maintenance
Note
Let the heating circuit pump run whilst
filling in order to vent the indirect coils.
(cont.)
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